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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Australia Watch Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Phnom Penh has a tropical wet-and-dry climate, meaning you can expect reliably hot conditions year-round with a distinct rainy season from May to October. The live forecast above gives the immediate picture, but the key planning factor is whether you are visiting in the wet or dry half of the year.
What is the best time to visit Phnom Penh?
The dry season from November to April offers the most comfortable conditions for exploring the city. Temperatures remain high, typically 28–35°C, but humidity is lower and rainfall is minimal. The wet season (May–October) brings heavy but often short afternoon downpours, which can affect sightseeing plans. For a balance of fewer crowds and lower accommodation rates, the shoulder months of November and April are worth considering.
How does the weather in Phnom Penh compare to Siem Reap?
Both cities share the same tropical monsoon pattern, so the weather Siem Reap experiences is very similar to Phnom Penh’s. The main difference is that Siem Reap is slightly further north and can feel a degree or two cooler in the evenings. If you are planning a trip that includes both destinations, the same seasonal advice applies: pack for heat and, if travelling between May and October, a reliable umbrella.
What is the weather in Phnom Penh tomorrow likely to be?
For a precise answer, check the live forecast above. Generally, expect a hot day with a high near 34°C. If it is the wet season, a brief afternoon storm is probable; in the dry season, clear skies are the norm.
Where can I find a reliable weather Phnom Penh radar?
Cambodia’s national meteorological service does not operate a public weather radar for Phnom Penh. For the most accurate short-term outlook, use the live forecast above or refer to satellite-based services that show cloud movement over the region.
Is there a useful 14-day forecast for Phnom Penh?
A phnom penh weather 14 days outlook can indicate general trends, but accuracy drops significantly beyond 7 days in tropical climates. The live forecast above provides the most reliable short-term view; for longer-range planning, focus on the seasonal pattern rather than daily predictions.
For more Australian-focused weather information, visit our Australia weather hub or check conditions in Sydney and Melbourne.