Measurements:
°C
°F
Alajuela
66°F
SW 3 mph
Feels like: 66°F
Precip: 49%
World Resorts Costa Rica Alajuela Weather August Weather in Alajuela

Alajuela Weather: August

Average Day Temperature: 81.2°F
Average Night Temperature: 64.5°F
Sea Water Temperature: 88.1°F
Number of Sunny Days: 2 days
Sunshine Hours: 12.3 - 12.6 hours
Number of Rainy Days: 22 days
Precipitation Totals: 16.7 in

Air Temperature in August, °F

Select Year: 2026 2025 2024

The highest day temperature in August 2026 was 90°F. The lowest night temperature was 63°F. The average values for day and night temperatures during August were 83.3°F и 66.7°F respectivly.

Alajuela Water Sea Temperature in August, °F

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Alajuela was 90.8°F. The maximum and minimum values were 90.0°F and 92.0°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 16.7 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 3.1 mph.

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 5.5 hours.

Best Time to Visit Alajuela
The most sunny months:
February 16 days
March 16 days
January 15 days
The most warm months:
March 87.3 °F
April 86.3 °F
February 85.5 °F
Warmest sea temperature:
April 89.1 °F
May 88.9 °F
March 88.6 °F
The most cold months:
October 78.7 °F
November 78.8 °F
September 80.0 °F
The most rainy months:
September 25 days
October 25 days
June 24 days
The most windy months:
February 6 mph
January 6 mph
March 6 mph

Alajuela on the Weather Map

24 Hours Weather Forecast
Alajuela
Local time: 03:47
07 sep, monday
0600 66°F
SW
3 mph
0900 80°F
NE
4 mph
1200 78°F
E
4 mph
1500 74°F
NE
2 mph
1800 70°F
SE
1 mph
2100 68°F
SW
4 mph
08 sep, tuesday
0000 68°F
SW
4 mph
0300 66°F
SW
5 mph