Birrí Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Birrí.
Climate overview of Birrí
With consistently stable weather, Birrí, Alajuela, Costa Rica, sees little seasonal temperature change. Daytime highs average 25°C (77°F), ranging from 26°C (79°F) in April to 24°C (75°F) in January.
Rainfall is high, totalling around 2944 mm (116 in) per year. October is the wettest month and March the driest. The city also experiences a distinct rainy season from May to November. The sunniest month is March, with 9.5 hours of sunshine per day on average.
Birrí Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Birrí — and find the best time to visit.
Monthly Temperature in Birrí
The climate in Birrí remains fairly constant, offering comfortable temperatures throughout the year. Average maximum daytime temperatures range from a comfortable 26°C (79°F) in April, the warmest time of the year, to a comfortable 24°C (75°F) during cooler months like January.
At night, you can expect temperatures ranging from 18°C (64°F) in April to around 16°C (61°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Birrí
Birrí is known for its substantial rainfall, with annual precipitation reaching 2944 mm (116 in). Significant seasonal changes in precipitation occur throughout the year. In the wettest month, October it receives heavy rainfall, averaging 416 mm (16 in) of precipitation, recorded across 24 rainy days. In contrast, the driest month March brings less rainfall, with 61 mm (2.4 in) over 9 rainy days. For more details, please visit our Birrí Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Birrí
Seasonal changes in sunshine hours are quite dramatic in Birrí. While March receives considerable daily sunshine with up to 9.5 hours, June marks the darkest time of the year, where sunshine is scarce with only 4.8 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Birrí by Month
The relative humidity is high throughout the year in Birrí.
The city experiences its highest humidity in October, reaching 87%. In March, the humidity drops to its lowest level at 66%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Birrí
The weather does bring rainfall during this period, between 61 mm (2.4 in) and 101 mm (4 in).
Plan accordingly for May, June, July, August, September, October, November and December, when conditions bring the heaviest precipitation. 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.
Frequently asked questions about the climate in Birrí
What is the best time to visit Birrí?
February, March and April typically offer the most optimal weather in Birrí. In contrast, May, June, July, August, September, October and November tend to have less optimal conditions. Birrí has a distinct rainy season from May to November.
What temperatures can I expect in Birrí?
Daytime highs range from 24°C (75°F) in January to 26°C (79°F) in April. Nighttime lows range from 16°C (61°F) to 18°C (64°F). Temperatures stay relatively stable year-round.
How much rain does Birrí get?
Annual rainfall is around 2944 mm (116 in). October is the wettest month with 416 mm (16 in), while March is the driest with 61 mm (2.4 in).
How sunny is Birrí?
Birrí receives around 2,446 hours of sunshine per year. March is the sunniest month with 284 hours, while June is the cloudiest with just 145 hours. Overall, Birrí enjoys abundant sunshine.
Birrí 3-Day Forecast
Birrí 3-Day Forecast
Birrí on the map
Birrí is highlighted — select any city to see its climate.
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Tamarindo
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