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High: 31° · Low: 25° · Feels like 32°
Phnom Penh, Cambodia's capital at the confluence of the Mekong and Tonlé Sap rivers, has a tropical monsoon climate that stays hot and humid almost all year. The year splits into two clear seasons: a wet season from May to October with intense afternoon downpours and high humidity, and a dry season from November to April. March and April are the hottest, with temperatures often reaching 35–38°C before the monsoon rains bring relief.
The wet season runs from May to October under the southwest monsoon, typically bringing heavy showers in the afternoon and evening, after which skies often clear again.
March and April are the hottest, with daytime highs reaching 35–38°C and high humidity, the peak of the sweltering dry season.
No, Phnom Penh is hot year-round. The coolest period is December to January, when nights can dip to around 22°C, but days remain warm.
November to February is ideal: it's the dry season, with sunny skies, lower humidity and more comfortable temperatures than the March–April peak.
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