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Cologne Bonn Airport
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Weather in Cologne Bonn Airport for September 2026

Your guide to Cologne Bonn Airport weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in Cologne Bonn Airport has been nearly identical to the historical average, with a temperature of 21.4 °C (showing only a slight deviation of 0 °C).

  • In general, the average temperature in Cologne Bonn Airport at the beginning of September is 23.3 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 23.7 °C by the end of September.

    • Rain 🌧️

  • The climate of Cologne Bonn Airport in September is notably wet, with an average of 15 rainy days, and a total of 58.1 mm of precipitation.

    • More

  • Is September a good time to visit Cologne Bonn Airport? check out the best time to travel to Cologne Bonn Airport 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
14 km/h
Avg max wind
Average humidity
68 %
Avg humidity

Cologne Bonn Airport Weather September

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

Temperatures trend during September in Cologne Bonn Airport

See the weather trend as well as the moving average line

September weather in Cologne Bonn Airport day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Patchy rain possible
Patchy rain possible
 22° /12° 0.9 mm 3
2 Sept. Overcast
Overcast
 22° /13° 0 mm 1
3 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 20° /15° 7.1 mm 1
4 Sept. Patchy rain possible
Patchy rain possible
 25° /16° 6.1 mm 1
5 Sept. Patchy rain possible
Patchy rain possible
 21° /13° 1 mm 4
6 Sept. Overcast
Overcast
 23° /10° 0 mm 3
7 Sept. Heavy rain at times
Heavy rain at times
 30° /15° 1.8 mm 1
8 Sept. Moderate rain at times
Moderate rain at times
 27° /17° 1.1 mm 2
9 Sept. Patchy rain possible
Patchy rain possible
 18° /12° 1.5 mm 1
10 Sept. Patchy rain possible
Patchy rain possible
 19° /9° 0.4 mm 4
11 Sept. Overcast
Overcast
 19° /11° 0 mm 1
12 Sept. Patchy rain possible
Patchy rain possible
 22° /12° 0.1 mm 2
13 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 17° /15° 18.1 mm 1
14 Sept. Overcast
Overcast
 21° /14° 0.1 mm 1
15 Sept. Overcast
Overcast
 27° /16° 0 mm 3
16 Sept. Heavy rain at times
Heavy rain at times
 19° /12° 10 mm 1
17 Sept. Overcast
Overcast
 20° /10° 0.3 mm 2
18 Sept. Patchy rain possible
Patchy rain possible
 18° /11° 1.1 mm 2
19 Sept. Overcast
Overcast
 23° /13° 0 mm 1
20 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 16° /12° 5.6 mm 1
21 Sept. Overcast
Overcast
 18° /9° 0 mm 1
22 Sept. Overcast
Overcast
 18° /10° 0 mm 3
23 Sept. Overcast
Overcast
 21° /9° 0 mm 2
24 Sept. Patchy rain possible
Patchy rain possible
 17° /11° 0.9 mm 1
25 Sept. Overcast
Overcast
 21° /8° 0 mm 2
26 Sept. Overcast
Overcast
 23° /11° 0 mm 1
27 Sept. Overcast
Overcast
 27° /13° 0 mm 1
28 Sept. Overcast
Overcast
 24° /14° 0 mm 1
29 Sept. Overcast
Overcast
 26° /16° 0 mm 0
30 Sept. Partly cloudy
Partly cloudy
 28° /17° 0 mm 3.2
Next
Important Notice
Our weather forecast for Cologne Bonn Airport 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 Bonn Airport forecast closer to your planned date for the most up-to-date weather information.
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Cologne Bonn Airport weather in September vs August vs October

Compare September weather in Cologne Bonn Airport 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
WeatherPatchy rain possible
Patchy rain possible
Overcast
Overcast
Patchy rain possible
Patchy rain possible
Temperatures26°/14°21°/12°14°/8°
Rainfall69 mm58 mm75 mm
Wind15.3 km/h13.9 km/h16.1 km/h
Humidity58%68%79%
Rainy days15 days15 days17 days
Dry days16 days15 days14 days

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

Cologne Bonn Airport in September - FAQ

What are the expected maximum and minimum temperatures in Cologne Bonn Airport 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 Bonn Airport during September?
Moderate rainfall is anticipated in Cologne Bonn Airport during September, with a total of 58.1 mm spread over approximately 15 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Cologne Bonn Airport during September?
The average wind speed in Cologne Bonn Airport during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Cologne Bonn Airport

Explore the daily rainfall trends and prepare for Cologne Bonn Airports September weather 💧
Typically, Cologne Bonn Airport has 15 rainy days in September with a total of 58.1 mm of rainfall.

UV exposure in Cologne Bonn Airport during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

What to pack to Cologne Bonn Airport in September?

🌦️ Mild & changeable · highs around 21 °C, frequent showers

As you prepare for your trip to Cologne Bonn Airport 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 Bonn Airport, during September, is comfortable and enjoyable, regardless of the weather conditions.

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🧥 Clothing

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🎒 Accessories

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Location coordinates Where is Cologne Bonn Airport?

Get accurate weather forecasts for Cologne Bonn Airport, located at latitude 50.879 and longitude 7.123. Stay updated with localized weather information tailored for Cologne Bonn Airport.

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