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Alajuela, Costa Rica Weather Averages

April is the hottest month in Alajuela with an average temperature of 25°C (76°F) and the coldest is January at 22°C (71°F). The wettest month is September with an average of 240mm of rain..

Average Temperature Alajuela

What is Average Temperature?
The average high temperature and the average low temperature for that month, on a daily basis, divided by 2 equals the average temperature for that month
What is Average Temperature?
The average high temperature and the average low temperature for that month, on a daily basis, divided by 2 equals the average temperature for that month

Average High Low Temperature Alajuela

What is Average High Low Temperature?
The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily
What is Average High Low Temperature?
The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily

Average Rainfall Alajuela

What is Average Rainfall?
The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years
What is Average Rainfall?
The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years

Alajuela : Next 24-Hour Weather

Today - 13th September 2026

Sunrise 05:26

Sunrise

Sunset 17:38

Sunset
3:00
Partly cloudy
19°C (66°F)
4:00
Mist
19°C (66°F)
5:00
Mist
19°C (66°F)
6:00
Cloudy
20°C (67°F)
7:00
Overcast
22°C (71°F)
8:00
Cloudy
24°C (74°F)
9:00
Patchy rain possible
26°C (77°F)
10:00
Patchy rain possible
27°C (80°F)
11:00
Light rain shower
27°C (79°F)
12:00
Light rain shower
26°C (79°F)
13:00
Light rain shower
26°C (78°F)
14:00
Light rain shower
25°C (75°F)
15:00
Light rain shower
22°C (71°F)
16:00
Light rain shower
21°C (69°F)
17:00
Light rain shower
20°C (68°F)
18:00
Light rain shower
20°C (67°F)
19:00
Patchy rain possible
20°C (67°F)
20:00
Patchy rain possible
19°C (66°F)
21:00
Overcast
20°C (67°F)
22:00
Patchy rain possible
20°C (66°F)
23:00
Patchy rain possible
19°C (66°F)

Tomorrow - 14th September 2026

Sunrise 05:26

Sunrise

Sunset 17:38

Sunset
0:00
Light rain shower
19°C (66°F)
1:00
Light rain shower
19°C (65°F)
2:00
Light rain shower
19°C (65°F)
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