More from Arenal
August is the hottest month in Arenal with an average temperature of 19°C (66°F) and the coldest is January at 9°C (48°F) with the most daily sunshine hours at 6 in September. The wettest month is April with an average of 130mm of rain..
Average Temperature Arenal
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
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
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 Arenal
What is Average High Low Temperature?
The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily
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
The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily
Average Rainfall Arenal
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
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
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
Average Daily Sunshine Hours Arenal
What are Average Daily Sunshine Hours?
Total sunshine hours for the month, divided by the number of days in the month. Sunshine hours are taken with a sunshine recorder, either a Campbell-Stokes recorder or an Eppley Pyreheliometer
Total sunshine hours for the month, divided by the number of days in the month. Sunshine hours are taken with a sunshine recorder, either a Campbell-Stokes recorder or an Eppley Pyreheliometer
What are Average Daily Sunshine Hours?
Total sunshine hours for the month, divided by the number of days in the month. Sunshine hours are taken with a sunshine recorder, either a Campbell-Stokes recorder or an Eppley Pyreheliometer
Total sunshine hours for the month, divided by the number of days in the month. Sunshine hours are taken with a sunshine recorder, either a Campbell-Stokes recorder or an Eppley Pyreheliometer
More Annual Averages
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Arenal : Next 24-Hour Weather
Today - 30th September 2026
Sunrise 08:11
Sunset 19:58
20:00
19°C
(65°F)
21:00
18°C
(64°F)
22:00
18°C
(64°F)
23:00
18°C
(63°F)
Tomorrow - 1st October 2026
Sunrise 08:11
Sunset 19:58
0:00
18°C
(63°F)
1:00
18°C
(63°F)
2:00
18°C
(63°F)
3:00
17°C
(62°F)
4:00
17°C
(62°F)
5:00
17°C
(62°F)
6:00
17°C
(62°F)
7:00
17°C
(62°F)
8:00
17°C
(63°F)
9:00
18°C
(63°F)
10:00
18°C
(64°F)
11:00
18°C
(64°F)
12:00
18°C
(64°F)
13:00
19°C
(65°F)
14:00
19°C
(65°F)
15:00
19°C
(65°F)
16:00
20°C
(67°F)
17:00
20°C
(67°F)
18:00
20°C
(66°F)
19:00
19°C
(66°F)
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