Weather in Phnom Penh, Cambodia in September
In an average September, Phnom Penh sees a daily high around 30°C and a low around 24°C, based on 1981–2026 of local climate records.
| Average high | 30°C |
|---|---|
| Typical high range | 29°C to 32°C |
| Average low | 24°C |
| Typical low range | 23°C to 25°C |
| Average daily precipitation | 8 mm |
September records
The most extreme September on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total September accumulation.
High
Highest
39°C
2016-09-03
Lowest
26°C
2012-09-30
Low
Highest
27°C
2016-09-02
Lowest
22°C
1982-09-11
Feels-like
Highest
56°C
2016-09-03
Lowest
26°C
2012-09-30
Humidity
Highest
24.7 g/m³
2023-09-09
Lowest
19.6 g/m³
2016-09-01
Wind
Highest
31 km/h
2016-09-13
Lowest
4 km/h
1985-09-24
Precip
Wettest
330 mm
1998
Driest
117 mm
1985
See Phnom Penh's live weather grade →
Visiting Phnom Penh in September? See how its comfort stacks up against where you live.
Compare Phnom Penh with your city →