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Weather in Cologne for September 2025

Your guide to Cologne weather in September - trends and predictions

    Temperatures

  • The forecast for the first days of September 2025 in Cologne predicts a temperature of 26.6 °C , which is warmer than usual.

  • In general, the average temperature in Cologne at the beginning of September is 23.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.3 °C by the end of September.

    • Rain 🌧️

  • The climate of Cologne in September is notably wet, with an average of 15 rainy days, and a total of 97.6 mm of precipitation.

    • More

  • Is September a good time to visit Cologne? check out the best time to travel to Cologne page.

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
15
Dry days
Average rainy days
15
Rainy days
Average snowy days
0
Snow days
Average temperatures
21°/12°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
72 %
Avg humidity

Cologne Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Sunny
26°
2
Patchy rain possible
31°
3
Patchy rain possible
21°
4
Patchy rain possible
18°
5
Patchy rain possible
24°
6
Moderate or heavy rain shower
24°
7
Moderate rain at times
23°
8
Moderate or heavy rain shower
21°
9
Patchy rain possible
22°
10
Overcast
22°
11
Patchy rain possible
19°
12
Moderate or heavy rain shower
16°
13
Patchy rain possible
17°
14
Partly cloudy
20°
15
Sunny
20°
16
Partly cloudy
22°
17
Patchy rain possible
19°
18
Partly cloudy
23°
19
Partly cloudy
26°
20
Patchy rain possible
23°
21
Moderate or heavy rain shower
23°
22
Moderate or heavy rain shower
21°
23
Patchy rain possible
20°
24
Heavy rain at times
22°
25
Cloudy
26°
26
Moderate or heavy rain shower
20°
27
Moderate rain at times
15°
28
Moderate rain at times
17°
29
Patchy rain possible
22°
30
Overcast
20°

Temperatures trend during September in Cologne

See the weather trend as well as the moving average line

September weather in Cologne day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 26° /14° 0 mm 5
2 Sept. Patchy rain possible
Patchy rain possible
 31° /16° 1.5 mm 5
3 Sept. Patchy rain possible
Patchy rain possible
 21° /16° 3 mm 4
4 Sept. Patchy rain possible
Patchy rain possible
 18° /13° 0.3 mm 4
5 Sept. Patchy rain possible
Patchy rain possible
 24° /16° 0 mm 4
6 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 24° /13° 3.5 mm 5
7 Sept. Moderate rain at times
Moderate rain at times
 23° /15° 1.5 mm 5
8 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 21° /13° 4.3 mm 5
9 Sept. Patchy rain possible
Patchy rain possible
 22° /13° 1.5 mm 5
10 Sept. Overcast
Overcast
 22° /13° 0 mm 5
11 Sept. Patchy rain possible
Patchy rain possible
 19° /11° 5.4 mm 4
12 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 16° /10° 6.2 mm 4
13 Sept. Patchy rain possible
Patchy rain possible
 17° /8° 0.1 mm 4
14 Sept. Partly cloudy
Partly cloudy
 20° /9° 0 mm 6
15 Sept. Sunny
Sunny
 20° /7° 0 mm 6
16 Sept. Partly cloudy
Partly cloudy
 22° /8° 0 mm 6
17 Sept. Patchy rain possible
Patchy rain possible
 19° /10° 0.2 mm 4
18 Sept. Partly cloudy
Partly cloudy
 23° /11° 0 mm 6
19 Sept. Partly cloudy
Partly cloudy
 26° /12° 0 mm 7
20 Sept. Patchy rain possible
Patchy rain possible
 23° /14° 0.1 mm 5
21 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 23° /14° 3.8 mm 5
22 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 21° /14° 12.8 mm 5
23 Sept. Patchy rain possible
Patchy rain possible
 20° /13° 0.5 mm 5
24 Sept. Heavy rain at times
Heavy rain at times
 22° /12° 2 mm 5
25 Sept. Cloudy
Cloudy
 26° /12° 0 mm 6
26 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 20° /14° 11.1 mm 5
27 Sept. Moderate rain at times
Moderate rain at times
 15° /12° 7.8 mm 4
28 Sept. Moderate rain at times
Moderate rain at times
 17° /9° 1.3 mm 4
29 Sept. Patchy rain possible
Patchy rain possible
 22° /8° 0.3 mm 5
30 Sept. Overcast
Overcast
 20° /12° 0 mm 5
Next
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.
Change Month
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Cologne weather in September vs August vs October

Compare September weather in Cologne with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
AugustSeptemberOctober
WeatherSunny
Sunny
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Temperatures29°/17°21°/12°20°/12°
Rainfall45 mm98 mm117 mm
Wind15.3 km/h17.5 km/h17.8 km/h
Humidity60%72%77%
Rainy days7 days15 days17 days
Dry days24 days15 days14 days

Planning a trip to Cologne? Discover the best time to visit

Cologne in September - FAQ

What are the expected maximum and minimum temperatures in Cologne during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Cologne during September?
Moderate rainfall is anticipated in Cologne during September, with a total of 97.6 mm spread over approximately 15 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 18 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 ☀️

Quick links

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Location coordinates Where is Cologne?

Get accurate weather forecasts for Cologne, located at latitude 43.722 and longitude 0.977. Stay updated with localized weather information tailored for Cologne.

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