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Phnom Penh, Cambodia Weather Averages

April is the hottest month in Phnom Penh with an average temperature of 31°C (87°F) and the coldest is January at 26°C (79°F) with the most daily sunshine hours at 8 in December. The wettest month is September with an average of 60mm of rain..

Average Temperature Phnom Penh

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 Phnom Penh

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 Phnom Penh

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

Average Daily Sunshine Hours Phnom Penh

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
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

Phnom Penh : Next 24-Hour Weather

Tomorrow - 18th August 2025

Sunrise 05:50

Sunrise

Sunset 18:18

Sunset
1:00
Clear
25°C (76°F)
2:00
Partly cloudy
25°C (76°F)
3:00
Partly cloudy
25°C (76°F)
4:00
Partly cloudy
25°C (75°F)
5:00
Partly cloudy
25°C (76°F)
6:00
Partly cloudy
25°C (76°F)
7:00
Partly cloudy
25°C (77°F)
8:00
Partly cloudy
28°C (81°F)
9:00
Cloudy
29°C (84°F)
10:00
Cloudy
31°C (87°F)
11:00
Cloudy
32°C (89°F)
12:00
Overcast
33°C (91°F)
13:00
Patchy rain possible
33°C (90°F)
14:00
Patchy rain possible
32°C (89°F)
15:00
Patchy rain possible
32°C (89°F)
16:00
Patchy rain possible
31°C (87°F)
17:00
Patchy rain possible
31°C (87°F)
18:00
Patchy rain possible
30°C (85°F)
19:00
Patchy rain possible
29°C (83°F)
20:00
Cloudy
28°C (82°F)
21:00
Cloudy
28°C (81°F)
22:00
Partly cloudy
27°C (80°F)
23:00
Partly cloudy
27°C (79°F)

Tomorrow - 19th August 2025

Sunrise 05:50

Sunrise

Sunset 18:18

Sunset
0:00
Partly cloudy
26°C (78°F)
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