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 experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 146.2 mm.
Is September a good time to visit Cologne? check out the best time to travel to Cologne page.
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Temperatures
Rain 🌧️
More
6
Dry days
24
Rainy days
0
Snow days
23°/14°
Temperatures
9 km/h
Avg max wind
71 %
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?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Cologne during September?
Significant rainfall exceeding 146.2 mm is expected in Cologne during September, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.
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
- Warm Clothing: Sweaters, hoodies, long 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
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
September rainfall patterns in Cologne
Explore the daily rainfall trends and prepare for Colognes September weather 💧
UV exposure in Cologne during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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