Bad Mergentheim Weather in September
What's the weather like in Bad Mergentheim (Baden-Württemberg Region) in September 2025?
The climate in Bad Mergentheim during September can be summarized as mild and reasonably dry.
September is in the fall / autumn in Bad Mergentheim and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 19°C (66°F), whilst at night 9°C (47°F) is normal.
| Daytime temperature | 19.1°C 66.3°F |
|---|---|
| Nightly temperature | 8.6°C 47.4°F |
| Average temperature | 13.8°C 56.8°F |
| Daily sunshine | 6 hrs |
| Avg rainfall | 54 mm 2.1 ins |
| Rainy days | 12 days |
| Sea temperature | 19.6°C 67.3°F |
| Humidity | 76% |
| Windspeed | 7.2kph 5 mph |
On average September is the 6th driest month of the year in Bad Mergentheim with around 54mm 2.1 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.
On the flip side this corresponds to an average of 6 hours of sunshine per day.
September temperatures in Bad Mergentheim
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 Bad Mergentheim in September 2025.
Other monthly averages
Best places to visit in September
Bad Mergentheim weather stats
| Hottest month: | July | 22.6°C 72.7°F |
|---|---|---|
| Driest month: | March | 45mm 1.8ins |
| Sunniest month: | August | 7.4hrs |
| Coldest month: | January | 1.6°C 34.9°F |
| Wettest month: | June | 85mm 3.3ins |
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