The wettest month in Guanacaste Region is October with 24.9cm of rain and the most days of rain with 20.1 days with some rain, a very wet time to visit the beach. As Costa Rica has over 20 micro-climates, temperatures and abundance of rain varies throughout the country. While the sunshine does come out, mostly in the mornings, this is the best time of the year to take a budget-friendly trip to Costa Rica. Exact veranillo days and duration vary from year to year, and may even continue into the start of August. For most of Costa Rica, including Tamarindo, December marks the official beginning of the “dry season,” also known as the “high season” (for tourism) or “summer” (verano) to Costa Ricans. Each place has a total for how many days of wet weather it usually gets this month and for the normal amount of precipitation. In San José, the wet season is humid and overcast, the dry season is partly cloudy, and it is warm year round. Remember: The climate in Costa Rica in december is good across the board. Costa Rica weather information including average monthly temperatures (°F) and rainfall (inches) for select locations. In fact, there is a chance you won't have any ran at all! For most of the country, December-April marks the “dry” season; but in the Caribbean and Arenal, the seasons are flipped. The driest month in Costa Rica is February with 1cm of rain and the least days of rain with 2.3 days with some rain, a very dry time to visit the beach. Most regions have a rainy season (May-November) and a dry season (December-April), and the rainfall almost everywhere follows a predictable schedule. Thunderstorms are still common but are not as vehement as in May and June. Boutique Travel Experts Providing Personalized Vacation Experiences Since 2002. San José Climate (Costa Rica) >>San José Weather by month // weather averages >>San José Climate graph // Weather by Month >>San José average temperature >>San José Weather; San José climate summary The San José lies on 1127m above sea level San José has a tropical climate. Aug. Sep. Oct. Nov. Dec. Please wait… Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec % 1 1 3 3 2 1 0 1 1 1 0 0 Chance of cloudy day: Costa Rica. Average Weather in San José Costa Rica. Could this be a complete disaster? Thunderstorms are still common but are not as intense as in May and June. Despite its proximity to the equatorial sun, average daily temperatures range between 71 and 81 degrees. Discounts can be found for rainy season months. In Tamarindo, December is a time of bright sun, few clouds, and fewer and fewer afternoon rain showers. A combination of hot summer temperatures and high coastal humidity, make for oppressive conditions at times. When to travel to Costa Rica? The wetter "green … The weather is generally good, and hotel prices low. Climate Overview. Rainfall. Green season - Good time for travel is from May to November, because of its gorgeous rich flora and fully green foliage. Apr. Due to varying elevations and environments, there are multiple microclimates around the country. It’s pretty windy, however, in Monteverde! The months of September into December tend to be wet and rainy throughout most of Costa Rica. Average relative humidity levels during a year are listed below for cities and towns in Costa Rica. Afternoons are rainy with typically clear mornings (perfect for morning tours). Based on weather reports collected during 1985–2015. Exceptions to the rule: Arenal welcomes its dry season in May. Similarly, months like September through November are generally the coldest months that the country sees, however this does vary region to region. The best months to visit Costa Rica are: December, January, February, March, April. September is the most wet month. Please wait… Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec % 0 0 0 2 9 24 19 25 28 13 3 1 Chance of windy day: Costa Rica. All Questions. You may catch an occasional shower or even an unseasonal (but spectacular) thunderstorm, especially in La Niña years, when Costa Rica experiences more rains than in alternate El Niño years. Geographical location. A long article with lots of diagrams explains the basics of how weather works in Costa Rica, a live map of today’s weather, current storms, and there are even instructions to make your own accurate weather forecast. Tamarindo has dry periods in January, February and March. When is the sea coldest in Quepos? There’s still quite a bit of rainfall across Costa Rica during this month with humidity between 70 to 90%. Costa Rica is located in Central America between the Pacific and Atlantic oceans. March and April, with an average high-temperature of 32°C (89.6°F), are the warmest months. In fact, short of snow, you can find almost any weather in Costa Rica. The second rainy period lasts from September to November, giving way to the transition into the dry season. Precipitation in Costa Rica decreased to 191.73 mm in December from 280.10 mm in November of 2015. First things first, there are two tropical seasons in Costa Rica: dry season and green season. In winter, there is much less rainfall than in summer. The driest and warmest months of the year are December through April. You may be looking at these maps and wondering how they can simultaneously show so much rainfall and so much sunshine and days without rain. The coldest month is May with an average maximum temperature of 31°C (87°F). Here is the average precipitation. While April is still considered the dry season, March marks the tail-end of the all-sun, all-the-time season. Usually, you get at least four hours of sun in the morning before the afternoon storms develop. Yes, that is a long rainy season. The country may be smaller than the state of West Virginia, but the weather in Costa Rica goes big. The coldest month is May with an average maximum temperature of 31°C (87°F). There are two main reasons. April is the hottest month in San Jose with an average temperature of 24.5°C (76°F) and the coldest is January at 21.5°C (71°F) with the most daily sunshine hours at 7 in June. La Fortuna experiences extreme seasonal variation in monthly rainfall. If you want to avoid the tourist fuss and get more economic rates for lodging, the early months of the rainy season are a great time to travel to Costa Rica. The best months to visit Costa Rica are: December, January, February, March, April. Trade winds blow in from the northwest primarily in January leaving March and April as the warmest months coinciding with the end of the dry season. Tourism during this time of year can still provide for a great experience, especially the more eco-touristy attractions. October weather is terrific in Costa Rica — despite what you might have heard! Best Places to See Wildlife in Costa Rica, no obligation custom trip plan & price quote, high and low temperatures each month of the year, basics of how weather works in Costa Rica, Traffic, Construction, Drive Times & Closures, Printable Maps of All Costa Rica & Details Maps of Popular Destinations. The Guanacaste region, along with the Pacific Coast and Central Valley, tends to experience wetter days. In fact, the two rainiest months throughout most of Costa Rica – September and October – are actually the two sunniest months on the Caribbean coast. The numbers here are based on weather data collected over many years. Costa Rica will reopen its borders on August 1 for low-risk countries. Of course, we don’t have snow. Central Pacific. Without much further a-do, here is the breakdown of Pros and Cons of coming to Costa Rica by month: Costa Rica > Alajuela > San José . Average Monthly Humidity(in %) 100; 75; 50; 25 0; Jan. Feb. Mar. Costa Rica Rainfall Map. The numbers here are based on weather data collected over many years. The contour maps of Costa Rica below show the average monthly Rainfall,  Hours of Sunshine per day, and Average Number of Sunny Days for each month of the year and every region of Costa Rica color coded by the legend at the bottom of each. Precipitation in Costa Rica decreased to 191.73 mm in December from 280.10 mm in November of 2015. Green season - Good time for travel is from May to November, because of its gorgeous rich flora and fully green foliage. These are areas such as San Jose, Alajuela, Cartago and Heredia. In Costa Rica, the weather is good everywhere in January, February, March and December The best months to go to San Jose are January, February, March, April and December On average, the warmest months in San Jose are January, February, March, April and May The rainiest months in this city are June, July, August, September and October What is the month with the lowest UV index in Quepos? The sun is bright, the skies blue, and the land parched. Costa Rica has a tropical climate with two seasons: dry season and rainy (or, “green,” as locals may call it) season. Thunderstorms, when they occur, are impressive. When you think of Costa Rica, you probably think of hot steamy weather and endless sunshine. Most regions have a rainy season (May-November) and a dry season (December-April), and the rainfall almost everywhere follows a predictable schedule. That’s only a little bit true in Costa Rica, where April is still mostly sunny. 18 °C to 31 °C. July and August are popular travel times … Annual Humidity for Costa Rica The most humid month in Costa Rica is June with a dew point (an indicator of humidity) of 24° which is very uncomfortable and fairly oppressive unless you are on a beach. A lot of rain (rainy season) falls in the month of: May, June, July, August, September and October. Loading weather data. The wet season months of May through November are characterized by less sun and more rain. Call Us 1-888-268-9753 Get the latest coronavirus (COVID-19) updates for Costa Rica with current travel advice, statistics and online resources.. Below are the temperatures expected today at popular destinations in Costa Rica.Select a destination to compare … April is the hottest month in San Jose with an average temperature of 24.5°C (76°F) and the coldest is January at 21.5°C (71°F) with the most daily sunshine hours at 7 in June. Exceptions to the rule: Arenal is still in high dry season, although as one of the rainier areas of Costa Rica, you may still get caught in the occasional shower. Costa Rica weather. Anyone taking a western Caribbean cruise will find that late winter to early spring is a good time for Costa Rica weather. If this is all WAY more than you were looking for then the general weather tendencies for every month of the year are summarized on the Best Time To Visit Costa Rica page along with a calendar of sea turtle nesting, whale migrations, quetzal nesting, surf size, tides charts, holidays, fiestas and music festivals for every month of the year. The sun frequently shines in the dry season, while it does not shine very often in … 0.24 – 16.06 in (1 – 23 Days of Rain) Average Annual Temperature is between 23.6 °C (San José) and 25.2 °C (Puerto Limón) Show temperatures in degree . Each region of Costa Rica is a bit different in terms of average temperatures and rainfall due to elevation and proximity to the ocean, but most follow the same general pattern. Ask question in category. San José Climate (Costa Rica) >>San José Weather by month // weather averages >>San José Climate graph // Weather by Month >>San José average temperature >>San José Weather; San José climate summary The San José lies on 1127m above sea level San José has a tropical climate. Exceptions to the rule: Arenal, where March is still rainy season. Annual Humidity for Costa Rica The most humid month in Costa Rica is June with a dew point (an indicator of humidity) of 24° which is very uncomfortable and fairly oppressive unless you are on a beach. Costa Rica Climate – An Overview. By mid-month, the rains have all but disappeared, while the landscapes are a blaze of green and colorful blooms, making December arguably the most beautiful month of the year. The weather is basically perfect throughout most of the country, including the Tamarindo area: sun all day, every day and not a cloud in the sky. April tends to be one of the hottest months in Costa Rica on the Pacific coast. Yellow is 6 inches or less. Tropical sunshine, Pacific trade wind breezes and cool misty mountains are just a part of Costa Rica's temperate tropical climate. Note that, with Costa Rica well into its third month of no rain, the landscapes begin to dry out and vibrant colors fade. Depending on your location and luck, you could see anything from no rain during a weeklong stay (more likely in drier Guanacaste and Tamarindo), to everyday rains. July tends to be the driest of the wet months and is considered a miniature dry season. It’s green season in Costa Rica, but a brief pocket of sunshine breaks up the rain in July in what locals call veranillo, or little summer. First, most of the rain falls in fairly heavy storms so while there may be a downpour for a couple of hours there will also be 8 or 10 hours of sunshine that day as well. Most humid month in Costa Rica is September. The amount of rainfall in Costa Rica does fluctuate fairly drastically. The driest month in Guanacaste Region is January with 0.3cm of rain and March has the fewest days of rain with 0.1 days with some rain, an extremely dry time to visit the beach. Take a look at the two maps below, which show Costa Rica rainfall in … The warmest month is March with an average maximum temperature of 35°C (95°F). Each region of Costa Rica is a bit different in terms of average temperatures and rainfall due to elevation and proximity to the ocean, but most follow the same general pattern. Nestled into Central America, Costa Rica's north of the equator with a climate marked by two seasons: the dry season (Dec.-April) and the wet season (May-Nov.). The Pacific slope rainy season in Costa Rica is from May to mid-December with a dramatic peak in precipitation September into November. Eastward from the central mountains, a lowland plain runs down to the Caribbean Sea. Exceptions to the rule: Arenal and the Caribbean coast, where January is rainy season. February continues the dry season trend of all-day sun and cloudless skies, with temperatures from 75ºF to 90ºF. This perception is certainly true in many parts of the country. Jun. The wettest month is September with an average of 240mm of rain.. Average Temperature: San Jose Characterized by warm, sunny days free of rain and tempered by cool trade winds, Costa Rica's dry season begins in December and continues through April. Several days of rainfall have caused flooding in parts of northern Costa Rica, particularly in the province of Guanacaste. Costa Rica > Guanacaste > Liberia. In San José, the wet season is humid and overcast, the dry season is partly cloudy, and it is warm year round. The rainy season runs from May to November, and the wettest months are September and October, with around 300 millimeters (12 inches) per month. We’re in the northern hemisphere but there’s no winter here; in fact, Costa Ricans typically refer to northern winter (December-March) as “summer” since this is the sunniest time of year, not to mention local schools’ “summer” break. So, how does Costa Rica define “occasional”? Adventure Activity Safety; Is Air Travel Safe in Costa Rica? This region is characterized by heat and humidity and by the existence of a rainy season and dry season. The warmest month is March with an average maximum temperature of 35°C (95°F). You never really know because it is different every year, but especially later in the month, you might deal with the occasional afternoon thunderstorm. In Costa Rica, there is tremendous rainfall variation from month to month. The contour maps of Costa Rica below show the average monthly Rainfall, Hours of Sunshine per day, and Average Number of Sunny Days for each month of the year and every region of Costa Rica color coded by the legend at the bottom of each. We are planning to get married at Dreams Las Mareas in early September. What airport should I fly to/from? In Jaco, during April, the rain falls for 8 days and regularly aggregates up to 93mm (3.7") of precipitation. Loading weather data. La Fortuna experiences extreme seasonal variation in monthly rainfall. Rainfall is heavy in this Central American country, which results in lush rain forests that make it popular for eco tourism. Costa Rica is home to dozens of microclimates, which offer pockets of sunshine even during the rainiest months. Temperatures vary depending on your exact location, but typically fall into the 75ºF to 90ºF range. Costa Rica weather. When you’re planning a Costa Rica vacation, it’s a good idea to understand the rain… Average Weather in San José Costa Rica. The rainy period of the year lasts for 8.8 months, from April 2 to December 27, with a sliding 31-day rainfall of at least 0.5 inches. The Guanacaste region, along with the Pacific Coast and Central Valley, tends to experience wetter days. All-day rains are not common but not unheard of, either; typically, you’ll have sunny mornings and all-afternoon rains. Guanacaste and Tamarindo have slightly better (= drier) weather. © Copyright – Stay in Tamarindo | The coolest temperatures are found from November through January, mostly due to the mild … Each place has a total for how many days of wet weather it usually gets a year and for the normal amount of precipitation. A lot of rain (rainy season) falls in the month of: May, June, July, August, September and October. Get the latest coronavirus (COVID-19) updates for Costa Rica with current travel advice, statistics and online resources.. Below are the temperatures expected today at popular destinations in Costa Rica.Select a destination to compare … Average monthly rainfall in Costa Rica (mm and inches) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec; mm: 155: 136: 129: 119: 142: 95: 61: 69: 121: 191: 183: 198: inches: 6.1: 5.4: 5.1: 4.7: 5.6: 3.7: 2.4: 2.7: 4.8: 7.5: 7.2: 7.8: Rainy days: 12: 11: 9: 7: 7: 7: 5: 6: 7: 10: 9: 11 Monteverde usually wrings an extra month out of its dry season, so you may get lucky there, as well. It will be an opportunity to discover the various festivities with the complicity of a climate throughout December in Costa Rica that is characterized by beautiful sunny days thanks to the regression of temperatures and rain. May is a transitional month throughout much of Costa Rica, ushering in the rainy season with occasional thunderstorms and rain showers. Usually, you get at least four hours of sun in the morning before the afternoon storms develop. May through November is the green season. In Costa Rica, the weather is good everywhere in January, February, March and December The best months to go to San Jose are January, February, March, April and December On average, the warmest months in San Jose are January, February, March, April and May The rainiest months in this city are June, July, August, September and October Rainy months are May, June, July, August, September and October. Annual Weather Averages in Alajuela. Costa Rica will reopen its borders on August 1 for low-risk countries. Costa Rica Weather In November. November is a transitional month for all weather in Costa Rica: most of the country witnesses a transition away from everyday rain showers, while the Caribbean and Arenal begin seeing more rain and less sun. While the sunshine does come out, mostly in the mornings, this is the best time of the year to take a budget-friendly trip to Costa Rica. As Costa Rica has over 20 micro-climates, temperatures and abundance of rain varies throughout the country. October Rainfall in Costa Rica. Although this time is considered the rainy season, it does not mean that you will have non-stop rain. Weather in Costa Rica. The wet season months of May through November are characterized by less sun and more rain. Annual Rainfall Averages for Costa Rica. This page explains why some regions in Costa Rica are sunny when others are rainy. The tropical climate produces rainfall in all months, and as a result, the eastern half of the country is also fairly cloudy. The driest month in Costa Rica is February with 1cm of rain and the least days of rain with 2.3 days with some rain, a very dry time to visit the beach. Precipitation in Costa Rica averaged 249.76 mm from 1901 until 2015, reaching an all time high of 733.36 mm in July of 1905 and a record low of 13.06 mm in March of 1926. Costa rica Ask a question. And yes, our seasons are often simplified down to “dry season” and “rainy season,” but Costa Rican weather is a lot more interesting than that. This puts it deep inside the tropics – about half way between the equator and the Tropic of Cancer. Costa Rica's east coast has beautiful white sandy beaches but also miles of mangroves. To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Yes, October is the rainiest month of the year on the Pacific coast. April means hot weather and the possible start of the rainy season. Rainfall in Costa Rica. As for Costa Rica’s Mountains: avoid them in October! Rainfall in the Costa Rican capital of San José in 2016. Rainy season in Costa Rica, or green season as it is often called, runs from later April until December. See Also Costa Rica in September Costa Rica in November. Constant rain and chilly temperatures are no way to spend a vacation. There are a number of other weather map resources on Costa Rica Guide including a series of maps like this for high and low temperatures each month of the year for each region, an action packed little map that pops up a chart of rainfall for each month when you mouseover any region and another that does the same for temperatures. All-day rains are possible but typically, you’ll have sunny mornings and all-afternoon rains. Remember the rhyme, April showers bring May flowers? The rainy period of the year lasts for 8.8 months, from April 2 to December 27, with a sliding 31-day rainfall of at least 0.5 inches. To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Jul. Website Design by InterCoastal Net Designs, https://www.stayintamarindo.com/wp-content/uploads/2016/06/stay_in_tamarindo_logo.png, Weather in Costa Rica: A Month-by-Month Guide, Condominio El Tesoro, 600 mts. Central Pacific. The National Meteorological Institute recently announced that additional severe weather is in store for Costa Rica in coming months, caused by the ongoing effects of El Niño, which has yet to reach its peak in the country. June is the first peak month of rain, while the Pacific veranillo comes in during July and August with the intensification of the trade winds. The sun frequently shines in the dry season, while it does not shine very often in … When planning your Costa Rica vacation, the weather in Costa Rica is a big part of the equation- the country lies wholly within the tropics, yet boasts about a dozen climatic zones and is notably diverse in local microclimates. Rainy months are May, June, July, August, September and October. Sure, we’re a tropical nation. Here is the average precipitation. September and October are the rainiest months (averaging 26 inches per month) of the year, and the most humid. Loading weather data. Exceptions to the rule: Arenal, where February is rainy season. Maximum rain recorded in Costa Rica is 1852.57 mm in August. Weather in Costa Rica hack: If you’re traveling during the rainy season, choose the Tamarindo area, one of the sunniest spots in the country. Rainy season continues with daily showers, usually in the afternoon. These are areas such as San Jose, Alajuela, Cartago and Heredia. Please wait… Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec % 0 0 0 2 9 24 19 25 28 13 3 1 Chance of windy day: Costa Rica. Exceptions to the rule: The Caribbean coast hits its driest season in September, and Arenal continues to bask in the sun. The second reason is that much of the rain (65-80% depending on the micro-climate) falls overnight. Rain is especially heavy in July and December -- averaging more than 16 inches each month. Table of Contents. There’s nearly no rainfall in the dry season between January and April. Oeste de Automercado, 4 After-Christmas & New Year’s Traditions in Costa Rica, Destination Overview: Playa Langosta Travel Guide. There’s plenty of diversity to the weather in Costa Rica, too. The dry season is rather intense in the province, with no rainfall for several months. From cold, misty mountains to hot, humid rainforest. September is the second-rainiest month of the year in most of Costa Rica, especially during La Niña years. The wettest month is September with an average of 240mm of rain.. Average Temperature: San Jose December is one of the best times to visit Central America. Rainfall & temperature chart by region; Should I rent a car? The driest and warmest months of the year are December through April. Spring in Costa Rica Costa Rica weather in April. Costa Rica > Alajuela > San José . In Monteverde, this is one of the windiest (and also chilliest) months of the year. However, consecutive daily rains would be uncommon (but not impossible) in April. May. This map is misleading, however, because it shows annual averages. December through April is the dry season. Thanks to its diverse geography, the Costa Rica climate is quite varied. Hands down, October is the rainiest month of the year. Average relative humidity levels during a year are listed below for cities and towns in Costa Rica. Guanacaste and Tamarindo have slightly better (= drier) weather, but don’t bank on full days of sun. Loading weather data. Guanacaste and Tamarindo have slightly better (= drier) weather. The Caribbean coast follows a different pattern with more consistent rainfall year round but noticeable decreases centered on October and March. With an average sea temperature of 27.7°C (81.9°F), November is the month with the coldest seawater. Michael's A-Z Guide on traveling with kids; Arenal volcano safe visitation guidelines; General Info about Costa Rica; Health Information. Exceptions to the rule: Arenal and the Caribbean coast, where December is rainy season. Chance of rain: Costa Rica. Loading weather data. But on the gorgeous Caribbean coast — home to some of the best beaches in Costa Rica — October is one of the driest, sunniest months of … Weather in: September. Other months typically have rain at some point of the day which has the benefit of vibrant, lively green throughout the natural views. July tends to be the driest of the wet months and is considered a miniature dry season. We’re close to the equator, which means we get 12+ hours of sunshine all year long: the sun rises and sets at the same time every day (around 5:45 a.m. and 5:45-6:30 p.m., year-round). (Alberto Font/The Tico Times) Global temperatures boosted by climate change will still be higher than usual despite the cooling effect of a “moderate to strong” La Niña weather phenomenon, the UN said Thursday. The rainiest months in Costa Rica are September – November. Exceptions to the rule: None. All-day rains are not common but not unheard of, either; typically, you’ll have sunny mornings and all-afternoon rains. The months of September into December tend to be wet and rainy throughout most of Costa Rica. This month should be avoided if you … Furthermore, we analyzed all climate data and provide a recommendation about which months are best to visit Costa Rica for your holiday. Answer 1 of 3: I have been reading up on the Green Season in Costa Rica. The rainfall map above shows which regions in Costa Rica receive the most rain. In the Central Valley, during the day it is around low to mid 70s F (21-23 C) and at night, it cools off to around 65 F (17-18 C). September is the second-rainiest month of the year in most of Costa Rica, especially during La Niña years. Loading weather data. The rainfall map below shows which Costa Rica regions experience the most rain. From May to November, the rainfall is quite heavy, with the most rain coming in September and October. Precipitation in Costa Rica averaged 249.76 mm from 1901 until 2015, reaching an all time high of 733.36 mm in July of 1905 and a record low of 13.06 mm in March of 1926. The rainiest months in Costa Rica are September – November. This page includes a chart with historical data for Costa Rica Average Precipitation. Tamarindo has dry periods in January, February and March. Exceptions to the rule: The Caribbean coast and Arenal both enjoy a continued run of dry and sunny weather. April, like March, is another tropical spring month in Jaco, Costa Rica, with average temperature varying between 32°C (89.6°F) and 24°C (75.2°F). Relative humidity measures the actual amount of moisture in the air as a percentage of the maximum amount of moisture the air can hold. Climate data and weather averages in Alajuela. In the month of November, the average highs are between 22.8°C (73°F) to 31.7°C (89.1°F). Rainy season continues with daily showers, usually in the afternoon. According to Casa Presidencial, local emergency committees in Guanacaste have activated nine shelters across three Guanacaste cantons — seven in Santa Cruz, one in Carrillo and one in La Cruz — with a total capacity for 400 displaced people. Please wait… Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec % 1 1 3 3 2 1 0 1 1 1 0 0 Chance of cloudy day: Costa Rica. The rainy season runs from May to November, and the wettest months are September and October, with around 300 millimeters (12 inches) per month. (Alberto Font/The Tico Times) Global temperatures boosted by climate change will still be higher than usual despite the cooling effect of a “moderate to strong” La Niña weather phenomenon, the UN said Thursday. The dry season is also the high season as many snow birds make … Months with no rains or lowest rains in Costa Rica is May. Rainfall in the Costa Rican capital of San José in 2016. These months have little to no rain in most of the country. Read more. In the Central Valley, during the day it is around low to mid 70s F (21-23 C) and at night, it cools off to around 65 F (17-18 C). Least humid month in Costa Rica is March. Exceptions to the rule: April is the last month of Arenal’s rainy season; it also marks the beginning of the second Caribbean rainy season. September and October are the rainiest months (averaging 26 inches per month) of the year, and the most humid. May Rainfall Averages for Costa Rica. Liberia Climate (Costa Rica) >>Liberia Weather by month // weather averages >>Liberia Climate graph // Weather by Month >>Liberia average temperature >>Liberia Weather; Liberia climate summary The Liberia lies on 151m above sea level Liberia has a tropical climate. By June, Costa Rica is well into the rainy season: daily rain is common, if not guaranteed, though showers often last just an hour or two. The tables below give May averages for rainfall at cities and other locations in Costa Rica. Chance of rain: Costa Rica. Here’s a breakdown of what to expect from the weather in Costa Rica, month by month: The second official month of the dry season, January is as close as Mother Nature comes to a guarantee of all-sun, no-rain. Relative humidity measures the actual amount of moisture in the air as a percentage of the maximum amount of moisture the air can hold. The month with the most rainfall in Quepos is October when the rain falls for 21 days and typically aggregates up to 601mm (23.7") of precipitation. The tables below give yearly averages for rainfall at cities and other locations in Costa Rica. Exceptions to the rule: Arenal is now in high dry season, although as one of the rainier areas of Costa Rica, you may still get caught in the occasional shower. Sticking to generalities, Guanacaste province (home to Tamarindo) is the driest in the country; this means we have drier rainy seasons, making Tamarindo a great choice for the best weather during May-November travel. This page includes a chart with historical data for Costa Rica Average Precipitation. Rainfall. 26 °C to 29 °C.