The weather in Phnom Penh in August is very hot. The average temperatures are between 25°C and 33°C, drinking water regularly is advisable.
There’s going to be many days of rain during the month of August in Phnom Penh.
Phnom Penh should expect an average of 15 to 22 days of rain, so be sure to bring along a waterproof jacket to stay dry this month!
Our weather forecast can give you a great sense of what weather to expect in Phnom Penh in August 2025.
If you’re planning to visit Phnom Penh in the near future, we highly recommend that you review the 14 day weather forecast for Phnom Penh before you arrive.
Temperatures
33° / 25°
Rainy Days
16
Snowy Days
0
Dry Days
15
Rainfall
244
mm
Sun Hours
11.0
Hrs
