Measurements:
°C
°F
Alajuela
70°F
SW 5 mph
Feels like: 70°F
Precip: 63%
World Resorts Costa Rica Alajuela Weather August Weather in Alajuela

Alajuela Weather: August

Average Day Temperature: 81.0°F
Average Night Temperature: 64.3°F
Sea Water Temperature: 87.9°F
Number of Sunny Days: 3 days
Sunshine Hours: 12.3 - 12.6 hours
Number of Rainy Days: 23 days
Precipitation Totals: 17.6 in

Air Temperature in August, °F

Select Year: 2025 2024 2023

The highest day temperature in August 2025 was 86°F. The lowest night temperature was 58°F. The average values for day and night temperatures during August were 79.4°F и 63.0°F respectivly.

Alajuela Water Sea Temperature in August, °F

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Alajuela was 88.2°F. The maximum and minimum values were 87.8°F and 88.8°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in August are cloudy but you can also expect sunny or gloomy days.

Precipitation Totals in August, in

Precipitation total in August for Alajuela is 17.6 in. It makes august one of the most rainy months of the year.

Wind Speed in August, mph

The average wind speed in August is 3.0 mph. It makes August one of the most windless months of the year for Alajuela.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Alajuela in August is 5.7 hours.

Best Time to Visit Alajuela
The most sunny months:
February 16 days
March 16 days
January 15 days
The most warm months:
March 87.4 °F
April 86.5 °F
February 85.5 °F
Warmest sea temperature:
April 89.1 °F
May 88.8 °F
March 88.5 °F
The most cold months:
October 78.7 °F
November 78.8 °F
September 80.0 °F
The most rainy months:
October 25 days
June 25 days
September 25 days
The most windy months:
February 6 mph
January 6 mph
March 6 mph

Alajuela on the Weather Map

Costa Rica Resorts:
NAME
Alajuela +70
Cahuita +78
Cartago +62
Heredia +66
Jaco +86
Limon +78
Playa Flamingo +90
Playas del Coco +90
Puerto Limon +78
Quepos +78
Samara +88
San Jose +66
Santa Teresa +86
Tamarindo +90
Tortuguero +78
24 Hours Weather Forecast
Alajuela
Local time: 17:35
10 mar, tuesday
1800 70°F
SW
5 mph
2100 62°F
SW
6 mph
11 mar, wednesday
0000 60°F
SW
5 mph
0300 60°F
SW
5 mph
0600 58°F
SW
5 mph
0900 84°F
SW
2 mph
1200 90°F
S
2 mph
1500 76°F
SW
4 mph