Cologne
September
Weather in Cologne for September 2025
Your guide to Cologne weather in September - trends and predictions
In general, the average temperature in Cologne at the beginning of September is 26.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.7 °C by the end of September.
Cologne sees moderate rainfall in September, averaging 10 rainy days.
Is September a good time to visit Cologne? check out the best time to travel to Cologne page.
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20
Dry days
10
Rainy days
0
Snow days
24°/15°
Temperatures
9 km/h
Avg max wind
70 %
Avg humidity
Cologne in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  27° | 2  28° | 3  28° | 4  27° | 5 22° | 6 25° | 7 27° |
| 8 25° | 9 26° | 10 26° | 11 26° | 12 22° | 13  21° | 14  21° |
| 15  22° | 16 22° | 17 18° | 18 22° | 19 23° | 20 22° | 21 22° |
| 22 20° | 23  19° | 24 20° | 25 20° | 26 19° | 27 23° | 28 21° |
| 29 21° | 30 21° |
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Temperatures trend during September in Cologne
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. | Patchy rain possible | 27° /15° | 1.1 mm | 6 | |
| 2 Sept. | Partly cloudy | 28° /16° | 1.2 mm | 7 | |
| 3 Sept. | Sunny | 28° /15° | 1.2 mm | 7 | |
| 4 Sept. | Overcast | 27° /17° | 8.2 mm | 6 | |
| 5 Sept. | Overcast | 22° /16° | 19.8 mm | 5 | |
| 6 Sept. | Sunny | 25° /14° | 0.9 mm | 6 | |
| 7 Sept. | Sunny | 27° /15° | 0 mm | 7 | |
| 8 Sept. | Sunny | 25° /16° | 3.7 mm | 6 | |
| 9 Sept. | Sunny | 26° /16° | 2.2 mm | 6 | |
| 10 Sept. | Sunny | 26° /15° | 0.2 mm | 7 | |
| 11 Sept. | Sunny | 26° /16° | 4 mm | 6 | |
| 12 Sept. | Partly cloudy | 22° /13° | 14.9 mm | 6 | |
| 13 Sept. | Thundery outbreaks possible | 21° /11° | 3.6 mm | 5 | |
| 14 Sept. | Moderate or heavy rain shower | 21° /12° | 7.2 mm | 5 | |
| 15 Sept. | Cloudy | 22° /12° | 0 mm | 6 | |
| 16 Sept. | Patchy rain possible | 22° /12° | 0.2 mm | 5 | |
| 17 Sept. | Partly cloudy | 18° /12° | 6.2 mm | 5 | |
| 18 Sept. | Light rain shower | 22° /13° | 4.9 mm | 6 | |
| 19 Sept. | Moderate rain at times | 23° /13° | 5.2 mm | 5 | |
| 20 Sept. | Light rain shower | 22° /13° | 4.2 mm | 5 | |
| 21 Sept. | Light rain shower | 22° /14° | 5.7 mm | 5 | |
| 22 Sept. | Light rain shower | 20° /12° | 11.3 mm | 5 | |
| 23 Sept. | Patchy light rain with thunder | 19° /12° | 11.4 mm | 4 | |
| 24 Sept. | Sunny | 20° /11° | 5.4 mm | 5 | |
| 25 Sept. | Sunny | 20° /11° | 1.3 mm | 5 | |
| 26 Sept. | Sunny | 19° /12° | 5.2 mm | 5 | |
| 27 Sept. | Sunny | 23° /15° | 6.8 mm | 6 | |
| 28 Sept. | Sunny | 21° /12° | 10.2 mm | 5 | |
| 29 Sept. | Sunny | 21° /11° | 0.1 mm | 6 | |
| 30 Sept. | Sunny | 21° /13° | 0.1 mm | 6 | |
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Important Notice
Our weather forecast for Cologne 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 Cologne forecast closer to your planned date for the most up-to-date weather information.
Cologne in September - FAQ
What are the expected maximum and minimum temperatures in Cologne 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 Cologne during September?
Moderate rainfall is anticipated in Cologne during September, with a total of 94 mm spread over approximately 10 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Cologne during September?
The average wind speed in Cologne during September is 9 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Cologne in September?
As you prepare for your trip to Cologne 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 Cologne, 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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