Warm
Average highs sit around 31°C, giving warm days by monthly-average standards.
September verdict
Koh Rong, Cambodia in September
Weather score48Mixed
Mixed for holiday weather
Average highs sit around 31°C, giving warm days by monthly-average standards. Sunshine averages 5.1h per day, enough for a balanced month. Rainfall averages 455mm, so showers are a real planning factor.
September weather
Monthly averages
Temp
31°C
Rain
455mm
Sun
5.1h
Sea
29°C
Weather score
48
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 455mm, so showers are a real planning factor.
Some sun
Sunshine averages 5.1h per day, enough for a balanced month.
Warm sea
Sea temperatures average 29°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare Koh Rong, Cambodia with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September31°C average high
September is cooler than the yearly average, which can make sightseeing feel gentler than in hotter months.
Warmest monthsMarch to May
This stretch sets the upper range for average daytime heat.
Rain
September455mm average rain
September is wetter than Koh Rong's yearly average, so flexible plans matter more.
Driest monthsJanuary to April and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September5.1 hours average sun
September is one of Koh Rong'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.
Sea temperature
September29°C average sea
September is below Koh Rong's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaApril to July
Sea temperatures are usually near 30°C in this stretch, so swimming comfort is at its strongest.
Weather score
September48 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 March and December
These months have the strongest weather score in the monthly averages.
