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Alajuela weather in August

Weather in Alajuela: August

Average day temperature: 77.9°F
Average night temperature: 62.9°F
Sea water temperature: 84.1°F
Number of sunny days: 3 days
Day length: 12.3 - 12.6 hours
Number of rainy days: 23 days
Precipitation totals: 17.6 in.

Air temperature in August, °F

Show year:
2025
2024
2023

The highest day temperature during August of 2025 was 82°F. At the same time the lowest night temperature was 57°F. Daily and nightly averages during August were 76.4°F and 61.7°F.

Sea water temperature in Alajuela in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 84.4°F. The highest and lowest sea temperatures during the month were 84.9°F and 84.0°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 18.0 in.

Wind speed in August, mph

The average wind speed value in August is 2.8 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: 4.6.

Best time for vacation in Alajuela

Sunniest months:
February 17 days
January 16 days
March 16 days
Warmest months:
March 83.6 °F
April 82.8 °F
February 82.3 °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:
October 25 days
June 25 days
September 25 days
Windiest months:
February 6.7 mph
January 6.3 mph
March 5.8 mph

Alajuela on a weather map

Alajuela
+57°F
SW 4 mph
Feels like: +57°F
Precip.: 0%
Places in Costa Rica:
Name
°F
+57°F
+77°F
+73°F
+72°F
+73°F
+73°F
+75°F
+54°F
+79°F
+75°F
+73°F
+57°F
24 Hours Forecast
Alajuela
Local time: 00:54
December 05, friday
0300
54°F
SW
5 mph
0600
54°F
SW
4 mph
0900
73°F
S
2 mph
1200
82°F
E
2 mph
1500
75°F
E
2 mph
1800
59°F
SW
2 mph
2100
55°F
SW
4 mph
December 06, saturday
0000
57°F
SW
4 mph
Units of measurement: °C / °F