The climate in Isdalsstø during September can be summarized as mild and very wet.
September is in the fall / autumn in Isdalsstø and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a cool 13°C (56°F), whilst at night 8°C (46°F) is normal.
|Daytime temperature||13.4°C 56.1°F|
|Nightly temperature||8°C 46.4°F|
|Average temperature||10.7°C 51.3°F|
|Daily sunshine||3.5 hrs|
|Avg rainfall||366 mm 14.4 ins|
|Rainy days||27 days|
|Sea temperature||13.7°C 56.7°F|
|Windspeed||14.8kph 9 mph|
On average September is the wettest month of the year in Isdalsstø with around 366mm 14.4 inches of rain making it a very wet time to visit. This rainfall is typically spread over 27 days, although this may vary considerably.
On the flip side this corresponds to an average of 3.5 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 Isdalsstø in September 2023.
|Hottest month:||July||16.5°C 61.7°F|
|Driest month:||May||126mm 5ins|
|Coldest month:||February||2.6°C 36.7°F|
|Wettest month:||September||366mm 14.4ins|