Trondheim Weather in September
What's the weather like in Trondheim (Sør-Trøndelag) in September 2024?
The climate in Trondheim during September can be summarized as cool and wet.
September is in the fall / autumn in Trondheim and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a cool 12°C (54°F), whilst at night 6°C (43°F) is normal.
| Daytime temperature | 12.2°C 54°F |
|---|---|
| Nightly temperature | 6°C 42.8°F |
| Average temperature | 9.1°C 48.4°F |
| Daily sunshine | 3.9 hrs |
| Avg rainfall | 133 mm 5.2 ins |
| Rainy days | 24 days |
| Sea temperature | 12.4°C 54.3°F |
| Humidity | 82% |
| Windspeed | 15.5kph 10 mph |
On average September is the wettest month of the year in Trondheim with around 133mm 5.2 inches of rain making it a wet time to visit. This rainfall is typically spread over 24 days, although this may vary considerably.
On the flip side this corresponds to an average of 3.9 hours of sunshine per day.
September temperatures in Trondheim
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 Trondheim in September 2024.
Other monthly averages
Best places to visit in September
Trondheim weather stats
| Hottest month: | July | 16.1°C 61°F |
|---|---|---|
| Driest month: | May | 53mm 2.1ins |
| Sunniest month: | May | 3.6hrs |
| Coldest month: | January | -0.5°C 31.1°F |
| Wettest month: | September | 133mm 5.2ins |
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