Mettmann Weather in September
What's the weather like in Mettmann (North Rhine-Westphalia) in September 2025?
The climate in Mettmann during September can be summarized as mild and reasonably dry.
September is in the fall / autumn in Mettmann and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 19°C (66°F), whilst at night 11°C (52°F) is normal.
| Daytime temperature | 19°C 66.1°F |
|---|---|
| Nightly temperature | 10.9°C 51.5°F |
| Average temperature | 14.9°C 58.8°F |
| Daily sunshine | 5 hrs |
| Avg rainfall | 70 mm 2.8 ins |
| Rainy days | 15 days |
| Sea temperature | 17.8°C 64.1°F |
| Humidity | 79% |
| Windspeed | 11.2kph 7 mph |
On average September is the 6th driest month of the year in Mettmann with around 70mm 2.8 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 15 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 Mettmann
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 Mettmann in September 2025.
Other monthly averages
Best places to visit in September
Mettmann weather stats
| Hottest month: | July | 22°C 71.6°F |
|---|---|---|
| Driest month: | February | 53mm 2.1ins |
| Sunniest month: | August | 6.5hrs |
| Coldest month: | January | 4°C 39.2°F |
| Wettest month: | June | 90mm 3.5ins |
© Google