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Germany weather

Weather in Konstanz for September 2025

Your guide to Konstanz weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Konstanz is slightly cooler than the historical average by -0.9 °C.

  • Expect cooler weather in the next days in Konstanz with the forecast suggesting a temperature of 16 °C, lower than the historical average.

  • In general, the average temperature in Konstanz at the beginning of September is 22.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 12 °C by the end of September.

    • Rain 🌧️

  • Konstanz in September brings notable rainfall, with an average of 16 rainy days and a total precipitation of 172.9 mm.

    • More

  • Is September a good time to visit Konstanz? check out the best time to travel to Konstanz 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
18°/10°
Temperatures
Average wind speed
12 km/h
Avg max wind
Average humidity
83 %
Avg humidity

Konstanz Weather September

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

Temperatures trend during September in Konstanz

See the weather trend as well as the moving average line

September weather in Konstanz day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Cloudy
Cloudy
 22° /13° 3 mm 5
2 Sept. Cloudy
Cloudy
 22° /12° 5.3 mm 5
3 Sept. Overcast
Overcast
 23° /12° 0 mm 6
4 Sept. Overcast
Overcast
 23° /14° 8.1 mm 5
5 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 20° /11° 9.8 mm 5
6 Sept. Cloudy
Cloudy
 21° /9° 1.5 mm 5
7 Sept. Sunny
Sunny
 24° /11° 0 mm 6
8 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 22° /13° 7.2 mm 5
9 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 17° /12° 11.5 mm 4
10 Sept. Moderate rain at times
Moderate rain at times
 17° /11° 3.1 mm 4
11 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 17° /8° 6.9 mm 4
12 Sept. Heavy rain at times
Heavy rain at times
 13° /8° 5.5 mm 3
13 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 16° /6° 8.2 mm 4
14 Sept. Patchy rain possible
Patchy rain possible
 14° /9° 10.2 mm 3
15 Sept. Partly cloudy
Partly cloudy
 19° /8° 1 mm 5
16 Sept. Patchy rain possible
Patchy rain possible
 17° /9° 0.3 mm 0.9
17 Sept. Partly cloudy
Partly cloudy
 16° /7° 0 mm 0.7
18 Sept. Sunny
Sunny
 24° /8° 0 mm 1.3
19 Sept. Sunny
Sunny
 26° /11° 0 mm 1.3
20 Sept. Sunny
Sunny
 27° /14° 0 mm 1.4
21 Sept. Moderate rain
Moderate rain
 21° /13° 16 mm 4
22 Sept. Patchy rain possible
Patchy rain possible
 14° /12° 1.9 mm 3
23 Sept. Moderate rain
Moderate rain
 12° /9° 5.3 mm 3
24 Sept. Moderate rain
Moderate rain
 9° /7° 6.3 mm 2
25 Sept. Moderate rain
Moderate rain
 10° /6° 5.6 mm 2
26 Sept. Patchy rain possible
Patchy rain possible
 12° /6° 0.3 mm 2
27 Sept. Patchy rain possible
Patchy rain possible
 12° /3° 1.2 mm 2
28 Sept. Overcast
Overcast
 13° /1° 0 mm 2
29 Sept. Patchy rain possible
Patchy rain possible
 11° /6° 2.8 mm 2
30 Sept. Patchy rain possible
Patchy rain possible
 17° /7° 0.6 mm 4
Next
Important Notice
Our weather forecast for Konstanz 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 Konstanz forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Konstanz weather in September vs August vs October

Compare September weather in Konstanz 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°/15°18°/10°15°/8°
Rainfall103 mm173 mm92 mm
Wind9.3 km/h12.3 km/h10.2 km/h
Humidity81%83%86%
Rainy days10 days16 days13 days
Dry days21 days14 days18 days

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

Konstanz in September - FAQ

What are the expected maximum and minimum temperatures in Konstanz during September?
Enjoy moderate daytime temperatures of up to 18° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Konstanz during September?
Significant rainfall exceeding 172.9 mm is expected in Konstanz during September, occurring over more than 16 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Konstanz during September?
The average wind speed in Konstanz during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Konstanz in September?

As you prepare for your trip to Konstanz 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 Konstanz, 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
    • 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 Konstanz

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

UV exposure in Konstanz 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 Konstanz?

Get accurate weather forecasts for Konstanz, located at latitude 47.66 and longitude 9.176. Stay updated with localized weather information tailored for Konstanz.

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