Average Temperature in Phnom Penh by Month

Phnom Penh has a tropical monsoon climate, classified as Am in the Köppen system. The warmest month is March with an average high of 35°C, while the coldest month is January with lows dropping to 22°C. The annual temperature range of 13°C indicates a relatively stable climate year-round.

The driest month is February with only 2 rain days and 8mm of precipitation. For travellers, February through to the following month typically offers the best balance of warm temperatures and dry conditions. Average humidity ranges from 82% to 82% throughout the year.