Dortmund
September
Weather in Dortmund for September 2025
Your guide to Dortmund weather in September - trends and predictions
In general, the average temperature in Dortmund at the beginning of September is 27 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.6 °C by the end of September.
Dortmund sees moderate rainfall in September, averaging 8 rainy days.
Is September a good time to visit Dortmund? check out the best time to travel to Dortmund page.
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22
Dry days
8
Rainy days
0
Snow days
24°/15°
Temperatures
12 km/h
Avg max wind
62 %
Avg humidity
Dortmund in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  24° | 2  27° | 3  26° | 4  23° | 5  30° | 6 29° | 7 30° |
| 8 27° | 9 26° | 10 24° | 11 24° | 12  20° | 13 17° | 14 18° |
| 15  22° | 16 22° | 17 23° | 18 24° | 19 22° | 20 24° | 21  24° |
| 22 22° | 23 18° | 24 18° | 25  18° | 26 20° | 27 20° | 28 18° |
| 29 19° | 30 17° |
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Temperatures trend during September in Dortmund
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Heavy rain | 24° /14° | 33 mm | 6 | |
| 2 Sept. | Light rain shower | 27° /17° | 3.8 mm | 6 | |
| 3 Sept. | Mist | 26° /16° | 1.4 mm | 6 | |
| 4 Sept. | Overcast | 23° /15° | 13 mm | 6 | |
| 5 Sept. | Sunny | 30° /16° | 1.2 mm | 7 | |
| 6 Sept. | Sunny | 29° /17° | 0.1 mm | 7 | |
| 7 Sept. | Sunny | 30° /17° | 0 mm | 8 | |
| 8 Sept. | Sunny | 27° /17° | 0.4 mm | 7 | |
| 9 Sept. | Sunny | 26° /17° | 1.9 mm | 7 | |
| 10 Sept. | Sunny | 24° /16° | 1.3 mm | 6 | |
| 11 Sept. | Sunny | 24° /15° | 4.6 mm | 6 | |
| 12 Sept. | Thundery outbreaks possible | 20° /13° | 0.4 mm | 5 | |
| 13 Sept. | Overcast | 17° /10° | 1.3 mm | 4 | |
| 14 Sept. | Overcast | 18° /10° | 0.1 mm | 5 | |
| 15 Sept. | Partly cloudy | 22° /11° | 0 mm | 5 | |
| 16 Sept. | Partly cloudy | 22° /15° | 1.1 mm | 6 | |
| 17 Sept. | Light rain shower | 23° /14° | 1.8 mm | 6 | |
| 18 Sept. | Overcast | 24° /15° | 0.6 mm | 6 | |
| 19 Sept. | Patchy rain possible | 22° /14° | 0 mm | 5 | |
| 20 Sept. | Partly cloudy | 24° /14° | 0 mm | 6 | |
| 21 Sept. | Moderate rain | 24° /14° | 5.6 mm | 6 | |
| 22 Sept. | Moderate rain | 22° /13° | 1.9 mm | 6 | |
| 23 Sept. | Patchy rain possible | 18° /12° | 1 mm | 4 | |
| 24 Sept. | Partly cloudy | 18° /11° | 1.7 mm | 5 | |
| 25 Sept. | Cloudy | 18° /12° | 9.2 mm | 5 | |
| 26 Sept. | Sunny | 20° /12° | 4.5 mm | 5 | |
| 27 Sept. | Overcast | 20° /12° | 2.7 mm | 5 | |
| 28 Sept. | Partly cloudy | 18° /12° | 1 mm | 5 | |
| 29 Sept. | Light rain shower | 19° /11° | 1.6 mm | 5 | |
| 30 Sept. | Partly cloudy | 17° /9° | 3.1 mm | 5 | |
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Important Notice
Our weather forecast for Dortmund in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Dortmund forecast closer to your planned date for the most up-to-date weather information.
Dortmund in September - FAQ
What are the expected maximum and minimum temperatures in Dortmund during September?
During September, expect a variety of temperatures with highs around 24° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in Dortmund during September?
Moderate rainfall is anticipated in Dortmund during September, with a total of 92.5 mm spread over approximately 8 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Dortmund during September?
The average wind speed in Dortmund during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Dortmund in September?
As you prepare for your trip to Dortmund in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Dortmund, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Layered Clothing: Light sweaters, long-sleeve shirts, light jackets, and comfortable pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
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