Moss Weather in September
What's the weather like in Moss (Østfold) in September 2025?
The climate in Moss during September can be summarized as mild and a little damp.
September is in the fall / autumn in Moss and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a cool 15°C (59°F), whilst at night 8°C (46°F) is normal.
| Daytime temperature | 15.1°C 59.1°F |
|---|---|
| Nightly temperature | 7.5°C 45.5°F |
| Average temperature | 11.3°C 52.3°F |
| Daily sunshine | 5 hrs |
| Avg rainfall | 90 mm 3.6 ins |
| Rainy days | 16 days |
| Sea temperature | 15.2°C 59.3°F |
| Humidity | 77% |
| Windspeed | 17.2kph 11 mph |
On average September is the 2nd wettest month of the year in Moss with around 90mm 3.6 inches of rain making it a a little damp 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 5 hours of sunshine per day.
September temperatures in Moss
September rainfall
September hourly sunshine
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 Moss in September 2025.
Other monthly averages
Best places to visit in September
Moss weather stats
| Hottest month: | July | 20.5°C 68.9°F |
|---|---|---|
| Driest month: | February | 39mm 1.5ins |
| Sunniest month: | June | 9.7hrs |
| Coldest month: | February | -0.7°C 30.7°F |
| Wettest month: | October | 96mm 3.8ins |
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