Phnom Penh Weather in September
31.6°C high · 24.7°C low · 225 mm rain · 7.4h sun
Sep is a warm month in Phnom Penh — not peak season, but a good time to avoid crowds.
September at a glance
| Metric | Value |
|---|---|
| Average high | 31.6°C |
| Average low | 24.7°C |
| Rainfall | 225 mm |
| Sunshine | 7.4 hours/day |
| Daylight | 12.1 hours |
What to pack in September
Pack light, breathable clothes, plus a raincoat and umbrella for Phnom Penh in September.
Phnom Penh weather by month
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Frequently asked questions
What is the weather in Phnom Penh in September?
Highs of 31.6°C and lows of 24.7°C, with about 225 mm of rain and 7.4 hours of sunshine per day.
Is September a good time to visit Phnom Penh?
Sep is a warm month in Phnom Penh — not peak season, but a good time to avoid crowds.
What to do in Phnom Penh · Best time to visit Phnom Penh
Climate data: Open-Meteo Historical (ERA5), 1991–2020. CC BY 4.0.