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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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Average dry days
20
Dry days
Average rainy days
10
Rainy days
Average snowy days
0
Snow days
Average temperatures
24°/15°
Temperatures
Average wind speed
9 km/h
Avg max wind
Average humidity
70 %
Avg humidity

Cologne in September average weather

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Temperatures trend during September in Cologne

See the weather trend as well as the moving average line
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September weather day by day

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Date Weather Temperatures Rain UV More
1 Sept. Patchy rain possible
Patchy rain possible
27° /15° 1.1 mm 6
2 Sept. Partly cloudy
Partly cloudy
28° /16° 1.2 mm 7
3 Sept. Sunny
Sunny
28° /15° 1.2 mm 7
4 Sept. Overcast
Overcast
27° /17° 8.2 mm 6
5 Sept. Overcast
Overcast
22° /16° 19.8 mm 5
6 Sept. Sunny
Sunny
25° /14° 0.9 mm 6
7 Sept. Sunny
Sunny
27° /15° 0 mm 7
8 Sept. Sunny
Sunny
25° /16° 3.7 mm 6
9 Sept. Sunny
Sunny
26° /16° 2.2 mm 6
10 Sept. Sunny
Sunny
26° /15° 0.2 mm 7
11 Sept. Sunny
Sunny
26° /16° 4 mm 6
12 Sept. Partly cloudy
Partly cloudy
22° /13° 14.9 mm 6
13 Sept. Thundery outbreaks possible
Thundery outbreaks possible
21° /11° 3.6 mm 5
14 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
21° /12° 7.2 mm 5
15 Sept. Cloudy
Cloudy
22° /12° 0 mm 6
16 Sept. Patchy rain possible
Patchy rain possible
22° /12° 0.2 mm 5
17 Sept. Partly cloudy
Partly cloudy
18° /12° 6.2 mm 5
18 Sept. Light rain shower
Light rain shower
22° /13° 4.9 mm 6
19 Sept. Moderate rain at times
Moderate rain at times
23° /13° 5.2 mm 5
20 Sept. Light rain shower
Light rain shower
22° /13° 4.2 mm 5
21 Sept. Light rain shower
Light rain shower
22° /14° 5.7 mm 5
22 Sept. Light rain shower
Light rain shower
20° /12° 11.3 mm 5
23 Sept. Patchy light rain with thunder
Patchy light rain with thunder
19° /12° 11.4 mm 4
24 Sept. Sunny
Sunny
20° /11° 5.4 mm 5
25 Sept. Sunny
Sunny
20° /11° 1.3 mm 5
26 Sept. Sunny
Sunny
19° /12° 5.2 mm 5
27 Sept. Sunny
Sunny
23° /15° 6.8 mm 6
28 Sept. Sunny
Sunny
21° /12° 10.2 mm 5
29 Sept. Sunny
Sunny
21° /11° 0.1 mm 6
30 Sept. Sunny
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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Location coordinates Where is Cologne?

Get accurate weather forecasts for Cologne, located at latitude 45.579 and longitude 9.942. Stay updated with localized weather information tailored for Cologne.

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