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Weather in Koblenz for September 2025

Your guide to Koblenz weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Koblenz is cooler than usual, with temperatures averaging 20.4 °C, this is -2.8 °C below the typical seasonal average.

  • Expect cooler weather in the next days in Koblenz with the forecast suggesting a temperature of 21.8 °C, lower than the historical average.

  • In general, the average temperature in Koblenz at the beginning of September is 24.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.9 °C by the end of September.

    • Rain 🌧️

  • Koblenz in September brings notable rainfall, with an average of 16 rainy days and a total precipitation of 67.9 mm.

    • More

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

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

Average dry days
14
Dry days
Average rainy days
16
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/10°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
74 %
Avg humidity

Koblenz Weather September

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

Temperatures trend during September in Koblenz

See the weather trend as well as the moving average line

September weather in Koblenz day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Moderate rain
Moderate rain
 23° /11° 2.9 mm 5
2 Sept. Fog
Fog
 26° /11° 2.4 mm 6
3 Sept. Mist
Mist
 25° /13° 1.3 mm 5
4 Sept. Partly cloudy
Partly cloudy
 22° /12° 4 mm 5
5 Sept. Sunny
Sunny
 26° /12° 0.7 mm 6
6 Sept. Sunny
Sunny
 24° /10° 0.1 mm 6
7 Sept. Sunny
Sunny
 28° /10° 0 mm 6
8 Sept. Sunny
Sunny
 24° /11° 1.2 mm 6
9 Sept. Light rain shower
Light rain shower
 22° /12° 16.6 mm 6
10 Sept. Sunny
Sunny
 23° /10° 0.8 mm 5
11 Sept. Sunny
Sunny
 22° /9° 2.6 mm 5
12 Sept. Light rain shower
Light rain shower
 20° /9° 13.1 mm 4
13 Sept. Mist
Mist
 17° /7° 2.9 mm 4
14 Sept. Patchy rain possible
Patchy rain possible
 18° /8° 1.5 mm 4
15 Sept. Moderate rain
Moderate rain
 21° /15° 6.4 mm 0.8
16 Sept. Patchy rain possible
Patchy rain possible
 17° /11° 1.7 mm 0.7
17 Sept. Partly cloudy
Partly cloudy
 17° /8° 0.1 mm 0.8
18 Sept. Sunny
Sunny
 25° /12° 0 mm 1.2
19 Sept. Sunny
Sunny
 28° /12° 0 mm 1.2
20 Sept. Sunny
Sunny
 29° /15° 0 mm 6
21 Sept. Patchy rain possible
Patchy rain possible
 22° /15° 1.4 mm 4
22 Sept. Patchy rain possible
Patchy rain possible
 22° /15° 0.9 mm 4
23 Sept. Patchy rain possible
Patchy rain possible
 21° /12° 1.9 mm 4
24 Sept. Sunny
Sunny
 21° /11° 0 mm 4
25 Sept. Partly cloudy
Partly cloudy
 22° /10° 0 mm 5
26 Sept. Patchy rain possible
Patchy rain possible
 20° /12° 0.7 mm 4
27 Sept. Patchy rain possible
Patchy rain possible
 21° /14° 0.1 mm 4
28 Sept. Patchy rain possible
Patchy rain possible
 19° /13° 0.3 mm 4
29 Sept. Patchy rain possible
Patchy rain possible
 19° /8° 0.3 mm 4
30 Sept. Mist
Mist
 17° /6° 0.5 mm 4
Next
Important Notice
Our weather forecast for Koblenz 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 Koblenz forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Koblenz weather in September vs August vs October

Compare September weather in Koblenz 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
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Temperatures25°/13°22°/10°16°/7°
Rainfall116 mm68 mm93 mm
Wind12 km/h13.2 km/h13.7 km/h
Humidity75%74%81%
Rainy days20 days16 days20 days
Dry days11 days14 days11 days

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

Koblenz in September - FAQ

What are the expected maximum and minimum temperatures in Koblenz during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Koblenz during September?
Moderate rainfall is anticipated in Koblenz during September, with a total of 67.9 mm spread over approximately 16 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Koblenz during September?
The average wind speed in Koblenz during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Koblenz in September?

As you prepare for your trip to Koblenz 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 Koblenz, 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 Koblenz

Explore the daily rainfall trends and prepare for Koblenzs September weather 💧

UV exposure in Koblenz during September

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

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Location coordinates Where is Koblenz?

Get accurate weather forecasts for Koblenz, located at latitude 50.354 and longitude 7.579. Stay updated with localized weather information tailored for Koblenz.

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