Warm
Average highs sit around 31°C, giving warm days by monthly-average standards.
September verdict
Phnom Penh, Cambodia in September
Weather score41Mixed
Mixed for holiday weather
Average highs sit around 31°C, giving warm days by monthly-average standards. Sunshine averages 4.9h per day, so this is not one of the brighter months. Rainfall averages 245mm, so showers are a real planning factor.
September weather
Monthly averages
Temp
31°C
Rain
245mm
Sun
4.9h
Weather score
41
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 245mm, so showers are a real planning factor.
Limited sun
Sunshine averages 4.9h per day, so this is not one of the brighter months.
Map
Weather map
Compare Phnom Penh, Cambodia with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September31°C average high
September is on the cooler side of Phnom Penh's year, useful if you prefer less intense daytime heat.
Warmest monthsMarch to May
This stretch sets the upper range for average daytime heat.
Rain
September245mm average rain
September is one of Phnom Penh's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to April and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September4.9 hours average sun
September is one of Phnom Penh's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsJanuary to April and December
This stretch has the strongest sunshine in the monthly averages.
Weather score
September41 weather score
September is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJanuary to February and December
These months have the strongest weather score in the monthly averages.
