Weather in Konstanz for September 2026
So far, September 2026 in Konstanz is slightly warmer than the historical average by 1 °C.
Expect cooler weather in the next days in Konstanz with the forecast suggesting a temperature of 17.2 °C, lower than the historical average.
In general, the average temperature in Konstanz at the beginning of September is 22.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 11.9 °C by the end of September.
Konstanz experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 148.6 mm.
Is September a good time to visit Konstanz? check out the best time to travel to Konstanz page.
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Konstanz Weather September
Temperatures trend during September in Konstanz
September weather in Konstanz day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Cloudy | 22° /12° | 2 mm | 6 | |
| 2 Sept. | Cloudy | 22° /12° | 3.5 mm | 4 | |
| 3 Sept. |  Overcast | 23° /12° | 0 mm | 5 | |
| 4 Sept. | Overcast | 24° /14° | 5.4 mm | 5 | |
| 5 Sept. |  Moderate or heavy rain shower | 21° /12° | 10.2 mm | 4 | |
| 6 Sept. | Cloudy | 22° /10° | 1 mm | 5 | |
| 7 Sept. |  Sunny | 25° /12° | 0 mm | 5 | |
| 8 Sept. | Moderate or heavy rain shower | 24° /14° | 5.3 mm | 5 | |
| 9 Sept. | Moderate or heavy rain shower | 18° /12° | 11.6 mm | 3 | |
| 10 Sept. | Moderate rain at times | 17° /10° | 2.1 mm | 3 | |
| 11 Sept. | Moderate or heavy rain shower | 18° /8° | 4.6 mm | 4 | |
| 12 Sept. |  Heavy rain at times | 16° /8° | 3.7 mm | 4 | |
| 13 Sept. | Moderate or heavy rain shower | 18° /8° | 6.4 mm | 3 | |
| 14 Sept. |  Patchy rain possible | 22° /13° | 2.4 mm | 5.2 | |
| 15 Sept. | Sunny | 24° /14° | 0 mm | 5.3 | |
| 16 Sept. | Light rain shower | 21° /15° | 6.4 mm | 4.8 | |
| 17 Sept. | Overcast | 17° /11° | 0.4 mm | 4.8 | |
| 18 Sept. | Overcast | 18° /11° | 0.2 mm | 5 | |
| 19 Sept. |  Partly cloudy | 18° /10° | 0 mm | 5 | |
| 20 Sept. | Sunny | 21° /11° | 0 mm | 6 | |
| 21 Sept. | Sunny | 22° /13° | 0 mm | 6 | |
| 22 Sept. | Sunny | 22° /13° | 0 mm | 6 | |
| 23 Sept. | Sunny | 18° /9° | 0.1 mm | 4 | |
| 24 Sept. | Sunny | 10° /5° | 0.4 mm | 3 | |
| 25 Sept. | Sunny | 11° /4° | 0.3 mm | 4 | |
| 26 Sept. |  Mist | 10° /4° | 0 mm | 3 | |
| 27 Sept. | Mist | 7° /4° | 0.7 mm | 2 | |
| 28 Sept. | Moderate or heavy rain shower | 12° /7° | 11 mm | 3 | |
| 29 Sept. | Overcast | 16° /6° | 1 mm | 4 | |
| 30 Sept. | Patchy rain possible | 17° /7° | 0.9 mm | 4 | |
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Konstanz weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 24°/13° | 18°/10° | 14°/6° |
| Rainfall | 130 mm | 149 mm | 82 mm |
| Wind | 9.5 km/h | 11.6 km/h | 12.5 km/h |
| Humidity | 79% | 82% | 84% |
| Rainy days | 18 days | 24 days | 19 days |
| Dry days | 13 days | 6 days | 12 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?
How much rainfall should be expected in Konstanz during September?
What are the typical wind conditions in Konstanz during September?
September rainfall patterns in Konstanz
UV exposure in Konstanz during September
What to pack to Konstanz in September?
Mild & changeable · highs around 18 °C, frequent showers
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
👟 Footwear
🎒 Accessories
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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.