The climate in Sihanoukville during September can be summarized as hot, humid and very wet.
September is in the fall / autumn in Sihanoukville and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a steamy 31°C (87°F), whilst at night 24°C (75°F) is normal.
|Daytime temperature||30.7°C 87.3°F|
|Nightly temperature||23.7°C 74.7°F|
|Average temperature||27.2°C 81°F|
|Daily sunshine||5.5 hrs|
|Avg rainfall||364 mm 14.3 ins|
|Rainy days||21 days|
|Sea temperature||29°C 84.2°F|
|Windspeed||6.8kph 4 mph|
On average September is the 4th wettest month of the year in Sihanoukville with around 364mm 14.3 inches of rain making it a very wet time to visit. This rainfall is typically spread over 21 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.5 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Sihanoukville in September 2021.
|Hottest month:||April||32.9°C 91.2°F|
|Driest month:||January||39mm 1.5ins|
|Coldest month:||January||30.2°C 86.4°F|
|Wettest month:||August||516mm 20.3ins|