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Alajuela Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Alajuela.
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Climate overview of Alajuela
Alajuela, Alajuela, Costa Rica, enjoys a steady climate throughout the year, with daytime temperatures typically around 26°C (79°F). April is the warmest month at 27°C (81°F), while November is the coolest at 25°C (77°F).
With around 2813 mm (111 in) of annual rainfall, Alajuela has a notably wet climate. However, this rainfall is not evenly distributed, the city has distinct dry (February to March) and wet (May to November) seasons. The wettest month is October. The most sunshine falls in March, with an average of 9.5 hours of daily sunshine.
Alajuela Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Alajuela - and find the best time to visit.
Monthly Temperature in Alajuela
The temperature in Alajuela remains steady throughout the year, providing a consistently comfortable climate. Average daytime temperatures reach a comfortable 27°C (81°F) in April. In November, the coolest month of the year, temperatures drop to a comfortable 25°C (77°F).
At night, temperatures range from around 18°C (64°F) in April to 16°C (61°F) in November.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Alajuela
Alajuela has a relatively rainy climate with high precipitation levels, averaging 2813 mm (111 in) of rainfall annually. Alajuela can be quite wet during October, receiving approximately 442 mm (17 in) of precipitation over 23 rainy days.
In contrast, during the driest month (March), you will experience much drier conditions, with 36 mm (1.4 in) of precipitation spread across 8 rainy days. For more details, please visit our Alajuela 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 Alajuela
Alajuela can be enjoyed more throughout the sunniest month of March under a blue sky, with approximately 9.5 hours of sunshine daily. In contrast, the city experiences much darker days in June, with only 4.8 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: San José, Costa Rica (17 KM, 11 Miles).
Daily hours of sunshine
Data from: San José, Costa Rica (17 KM, 11 Miles).
Humidity in Alajuela by Month
The relative humidity is high throughout the year in Alajuela.
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
Data from: San José, Costa Rica (17 KM, 11 Miles).
Best Time to Visit Alajuela
Conditions in Alajuela are generally most comfortable in January, February, March and April. They are typically least comfortable in May, June, July, August, September and October.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
excellent
Feb
excellent
Mar
excellent
Apr
excellent
May
very wet
Jun
very wet
Jul
very wet
Aug
very wet
Sep
very wet
Oct
very wet
Nov
mixed
Dec
very good
- Best overall: January, February, March and April
- Warmest weather: February, March, April and May
- Most sunshine: January and March
- Fewest rainy days: February and March
- Seasonal pattern: Distinct dry (February to March) and wet (May to November) seasons
Frequently asked questions about the climate in Alajuela
What is the best time to visit Alajuela?
January, February, March and April typically offer the most optimal weather in Alajuela. In contrast, May, June, July, August, September and October tend to have less optimal conditions. Alajuela has distinct dry (February to March) and wet (May to November) seasons.
What temperatures can I expect in Alajuela?
Daytime highs range from 25°C (77°F) in November to 27°C (81°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 Alajuela get?
Annual rainfall is around 2813 mm (111 in). October is the wettest month with 442 mm (17 in), while March is the driest with 36 mm (1.4 in).
How sunny is Alajuela?
Alajuela 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, Alajuela enjoys abundant sunshine.
Alajuela 3-Day Forecast
Alajuela on the map
Alajuela is highlighted - select any city to see its climate.
Popular in September
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Tamarindo
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