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Alajuela weather in September

Weather in Alajuela: September

Average day temperature: 77.2°F
Average night temperature: 63.7°F
Sea water temperature: 83.7°F
Number of sunny days: 2 days
Day length: 12.0 - 12.3 hours
Number of rainy days: 26 days
Precipitation totals: 23.0 in.

Air temperature in September, °F

Show year:
2024
2023
2022

The highest day temperature during September of 2024 was 78°F. At the same time the lowest night temperature was 59°F. Day and night temperature averages during September were 74.1°F and 62.5°F.

Sea water temperature in Alajuela in September, °F

Show year:
2024
2023
2022

The average sea water temperature in September of 2024 was 84.0°F. The highest and lowest sea temperatures during the month were 84.7°F and 82.9°F.

Sunny, partly cloudy and cloudy days

Mostly all days in September are partly cloudy but sunny or cloudy days are also possible.

Precipitation total in September, in.

Precipitation total value in Alajuela in September is 21.3 in. It makes september one of the most rainy months of the year.

Wind speed in September, mph

The average wind speed value in September is 2.4 mph It makes September lest windy month of the year.

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 September is: 4.2.

Best time for vacation in Alajuela

Sunniest months:
February 18 days
January 17 days
March 17 days
Warmest months:
March 83.6 °F
April 83.0 °F
February 82.4 °F
Warmest sea temp:
April 85.1 °F
May 84.9 °F
March 84.6 °F
Coldest months:
October 76.0 °F
November 76.4 °F
September 77.2 °F
Rainiest months:
September 26 days
October 26 days
June 25 days
Windiest months:
February 6.8 mph
January 6.4 mph
March 5.9 mph

Alajuela on a weather map

Alajuela
+75°F
E 1 mph
Feels like: +77°F
Precip.: 100%
Places in Costa Rica:
Name
°F
+75°F
+81°F
+68°F
+81°F
+81°F
+81°F
+81°F
+81°F
+73°F
+79°F
+81°F
+73°F
24 Hours Forecast
Alajuela
Local time: 09:37
November 21, thursday
1200
75°F
SE
1 mph
1500
73°F
SE
1 mph
1800
63°F
SW
3 mph
2100
61°F
SW
3 mph
November 22, friday
0000
59°F
SW
3 mph
0300
57°F
SW
4 mph
0600
59°F
SW
4 mph
0900
72°F
S
3 mph
Units of measurement: °C / °F