North Rhine-Westphalia (Köln)
September
Weather in North Rhine-Westphalia for September 2025
Your guide to North Rhine-Westphalia weather in September - trends and predictions
In general, the average temperature in North Rhine-Westphalia at the beginning of September is 26.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.1 °C by the end of September.
North Rhine-Westphalia sees moderate rainfall in September, averaging 10 rainy days.
Is September a good time to visit North Rhine-Westphalia? check out the best time to travel to North Rhine-Westphalia page.
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20
Dry days
10
Rainy days
0
Snow days
24°/14°
Temperatures
14 km/h
Avg max wind
64 %
Avg humidity
North Rhine-Westphalia in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  25° | 2 28° | 3  26° | 4  23° | 5  29° | 6 27° | 7 29° |
| 8 26° | 9 25° | 10 25° | 11 23° | 12  21° | 13 17° | 14 19° |
| 15 22° | 16 22° | 17 25° | 18 24° | 19 23° | 20 24° | 21 24° |
| 22  22° | 23 18° | 24 19° | 25  19° | 26 21° | 27 20° | 28 18° |
| 29 20° | 30 17° |
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Temperatures trend during September in North Rhine-Westphalia
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. | Light rain shower | 25° /14° | 20.5 mm | 6 | |
| 2 Sept. | Patchy rain possible | 28° /16° | 4.8 mm | 7 | |
| 3 Sept. | Overcast | 26° /16° | 0.7 mm | 6 | |
| 4 Sept. | Partly cloudy | 23° /14° | 7.4 mm | 6 | |
| 5 Sept. | Sunny | 29° /16° | 0.5 mm | 7 | |
| 6 Sept. | Sunny | 27° /16° | 0.5 mm | 7 | |
| 7 Sept. | Sunny | 29° /15° | 0 mm | 8 | |
| 8 Sept. | Sunny | 26° /16° | 0.8 mm | 7 | |
| 9 Sept. | Sunny | 25° /16° | 4.9 mm | 7 | |
| 10 Sept. | Sunny | 25° /15° | 0.4 mm | 6 | |
| 11 Sept. | Sunny | 23° /14° | 4.6 mm | 6 | |
| 12 Sept. | Thundery outbreaks possible | 21° /12° | 1.7 mm | 5 | |
| 13 Sept. | Overcast | 17° /9° | 1.7 mm | 4 | |
| 14 Sept. | Overcast | 19° /10° | 0 mm | 5 | |
| 15 Sept. | Partly cloudy | 22° /10° | 0 mm | 6 | |
| 16 Sept. | Partly cloudy | 22° /14° | 2.7 mm | 6 | |
| 17 Sept. | Light rain shower | 25° /14° | 2.3 mm | 6 | |
| 18 Sept. | Overcast | 24° /15° | 1.1 mm | 6 | |
| 19 Sept. | Partly cloudy | 23° /14° | 0.1 mm | 6 | |
| 20 Sept. | Partly cloudy | 24° /14° | 0 mm | 6 | |
| 21 Sept. | Light rain shower | 24° /13° | 5.8 mm | 6 | |
| 22 Sept. | Moderate or heavy rain with thunder | 22° /12° | 1.1 mm | 6 | |
| 23 Sept. | Light rain shower | 18° /12° | 2 mm | 5 | |
| 24 Sept. | Partly cloudy | 19° /11° | 1.8 mm | 5 | |
| 25 Sept. | Cloudy | 19° /11° | 6.2 mm | 5 | |
| 26 Sept. | Sunny | 21° /12° | 4.6 mm | 5 | |
| 27 Sept. | Overcast | 20° /11° | 1.5 mm | 5 | |
| 28 Sept. | Cloudy | 18° /11° | 1.7 mm | 4 | |
| 29 Sept. | Light rain shower | 20° /11° | 1.7 mm | 5 | |
| 30 Sept. | Partly cloudy | 17° /9° | 1.7 mm | 5 | |
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Important Notice
Our weather forecast for North Rhine-Westphalia 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 North Rhine-Westphalia forecast closer to your planned date for the most up-to-date weather information.
North Rhine-Westphalia in September - FAQ
What are the expected maximum and minimum temperatures in North Rhine-Westphalia during September?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in North Rhine-Westphalia during September?
Moderate rainfall is anticipated in North Rhine-Westphalia during September, with a total of 75.2 mm spread over approximately 10 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in North Rhine-Westphalia during September?
The average wind speed in North Rhine-Westphalia during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to North Rhine-Westphalia in September?
As you prepare for your trip to North Rhine-Westphalia 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 North Rhine-Westphalia, 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 North Rhine-Westphalia
Explore the daily rainfall trends and prepare for North Rhine-Westphalias September weather 💧
UV exposure in North Rhine-Westphalia during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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