Temperature. The months of September into December tend to be wet and rainy throughout most of Costa Rica. Guanacaste is the Warmest and Driest of Costa Rica’s Seven Provinces . While it most certainly rains in this region in September, the rains are not as hard or consistent as they are further south along the Pacific coast. September 2020 is likely to be a La Nada ENSO (El Niño Southern Oscillation – Neutral year. During June and July, rain showers pause briefly, and Costa Rica's forests burst with green foliage. While planning your trip, keep in mind that the weather varies by region. Guanacaste is the warmest and driest of Costa Rica’s seven provinces. Hi, Weather at the Marriott Guanacaste in September should be sunny mornings and some thunderstorms in afternoon. Costa Rica weather in September 2021. The last time Costa Rica was in a La Nada was 2017 and the rainy season was one of the wettest on record. 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. Get the latest coronavirus (COVID-19) updates for Costa Rica with current travel advice, statistics and online resources.. Below are average maximum temperatures at popular destinations in Costa Rica in September. To maintain relevance to current weather trends the displayed information has been calculated using data collected over the past two decades. The climate profile is taken from closest available data source to Guanacaste. Most of time it is nice for swimming..just dont go too deep into the water. As Costa Rica has over 20 micro-climates, temperatures and abundance of rain varies throughout the country. But in Guanacaste October has the most rain (most days, throughout the day) and September usually gets more rainy as you get later in the month. Select a destination to see more weather parameters. The Northwest Pacific region and Guanacaste are in Costa Rica's tropical dry forest. The Guanacaste region, along with the Pacific Coast and Central Valley, tends to experience wetter days. September truly is an exceptional time to visit Costa Rica's beautiful Costa Caribe! 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). The hotel has several in house activities, hikes, zip-line, cooking classes, etc… I’m worried that because it’s local and all included, it may not be as “adventurous” as we hope. With a population of about 400,000 people, it covers the whole northwestern section of the country, bordering the Pacific Ocean and … Roughness depends on the wind etc. Traveling to Costa Rica in March, for the first time with our four kids (ages 14-19), staying in south Guanacaste. Costa Rica is generally a great place to visit during the rainy season. Ein sehr chicas guanacaste costa rica weather in september Strand gegenüber der Insel Bolaños, die man mit dem Boot oder Kajak besuchen kann. The rainiest months in Costa Rica are September – November. Climate change is most noticeable as extreme weather gets even more extreme and Costa Rica is no exception. (nice weather) Beach is beautiful there.