Ostional Weather & Climate: Best Time to Visit
Ostional, Guanacaste, Costa Rica, has a stable climate with little temperature variation across the year. Average daytime temperatures hover around 30°C (86°F), peaking in March at 32°C (90°F) and dipping in January to 29°C (84°F).
Rainfall is high, totalling around 2516 mm (99 in) per year. October is the wettest month and February the driest. The city also experiences distinct dry (December to March) and wet (May to November) seasons.
Monthly Temperature in Ostional
With minimal seasonal shifts, Ostional experiences a constant climate year-round. Average maximum daytime temperatures range from a very warm 32°C (90°F) in March, the warmest time of the year, to a comfortable 29°C (84°F) during cooler months like January.
At night, you can expect temperatures ranging from 26°C (79°F) in March to around 24°C (75°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Ostional
Ostional has a notably wet climate with abundant precipitation, recording 2516 mm (99 in) of rainfall per year. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, October it receives heavy rainfall, averaging 448 mm (18 in) of precipitation, recorded across 21 rainy days. In contrast, the driest month February brings less rainfall, with 8.3 mm (0.3 in) over 6 rainy days. For more details, please visit our Ostional Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Ostional 3-Day Forecast
Check the conditions for any month of the year.
Best Time to Visit Ostional
With its warm weather, Ostional experiences temperatures from 29°C (84°F) to 32°C (90°F) throughout the year. January, February, March, April and December offers the driest weather, which makes it a good time to visit.It's smart to plan your activities during the cooler morning hours or take advantage of the refreshing evenings.
Note that May, June, July, August, September, October and November make up the rainy season, with heavier precipitation expected. Seeking the perfect travel destination for this year? We've created a tool that suggests locations matching your desired weather. Let our weather planner guide your travel decisions.
