The climate in Falmouth during September can be summarized as hot, humid and wet.
September is in the fall / autumn in Falmouth and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a steamy 31°C (87°F), whilst at night 25°C (76°F) is normal.
|Daytime temperature||30.7°C 87.2°F|
|Nightly temperature||24.6°C 76.2°F|
|Average temperature||27.6°C 81.7°F|
|Daily sunshine||7.9 hrs|
|Avg rainfall||140 mm 5.5 ins|
|Rainy days||16 days|
|Sea temperature||28.8°C 83.9°F|
|Windspeed||18.4kph 11 mph|
On average September is the wettest month of the year in Falmouth with around 140mm 5.5 inches of rain making it a wet time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.9 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 Falmouth in September 2021.
|Hottest month:||July||30.8°C 87.4°F|
|Driest month:||February||37mm 1.5ins|
|Coldest month:||January||28°C 82.4°F|
|Wettest month:||September||140mm 5.5ins|