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Alajuela weather in August

Weather in Alajuela: August

Average day temperature: 78.1°F
Average night temperature: 63.0°F
Sea water temperature: 84.3°F
Number of sunny days: 2 days
Day length: 12.3 - 12.6 hours
Number of rainy days: 22 days
Precipitation totals: 16.7 in.

Air temperature in August, °F

Show year:
2026
2025
2024

The highest day temperature during August of 2026 was 86°F. At the same time the lowest night temperature was 61°F. Daily and nightly averages during August were 79.9°F and 65.1°F.

Sea water temperature in Alajuela in August, °F

Show year:
2026
2025
2024

The average sea water temperature in August of 2026 was 86.7°F. The highest and lowest sea temperatures during the month were 87.8°F and 86.0°F.

Sunny, partly cloudy and cloudy days

Mostly all days in August are cloudy but sunny and partly cloudy days are also possible.

Precipitation total in August, in.

Precipitation total value in Alajuela in August is 15.5 in.

Wind speed in August, mph

The average wind speed value in August is 2.7 mph

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in August is: 4.3.

Best time for vacation in Alajuela

Sunniest months:
February 16 days
March 16 days
January 15 days
Warmest months:
March 83.6 °F
April 82.7 °F
February 81.9 °F
Warmest sea temp:
April 85.2 °F
May 85.0 °F
March 84.7 °F
Coldest months:
October 75.8 °F
November 76.0 °F
September 77.0 °F
Rainiest months:
September 25 days
October 25 days
June 24 days
Windiest months:
February 6.6 mph
January 6.3 mph
March 5.7 mph

Alajuela on a weather map

Alajuela
+66°F
SW 4 mph
Feels like: +66°F
Precip.: 38%
Places in Costa Rica:
Name
°F
+66°F
+81°F
+79°F
+79°F
+79°F
+73°F
+63°F
+82°F
+77°F
+75°F
+77°F
+63°F
24 Hours Forecast
Alajuela
Local time: 01:35
September 05, saturday
0300
66°F
SW
4 mph
0600
66°F
SW
4 mph
0900
77°F
SW
1 mph
1200
79°F
NE
1 mph
1500
77°F
NE
2 mph
1800
68°F
SW
1 mph
2100
64°F
SW
4 mph
September 06, sunday
0000
64°F
SW
4 mph
Units of measurement: °C / °F