Wahlkreis St. Gallen (Sankt Gallen)
September
Weather in Wahlkreis St. Gallen for September 2026
Your guide to Wahlkreis St. Gallen weather in September - trends and predictions
So far, September 2026 in Wahlkreis St. Gallen is slightly warmer than the historical average by 1.4 °C.
Expect cooler weather in the next days in Wahlkreis St. Gallen with the forecast suggesting a temperature of 18.5 °C, lower than the historical average.
In general, the average temperature in Wahlkreis St. Gallen at the beginning of September is 22.1 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 19.4 °C by the end of September.
The climate of Wahlkreis St. Gallen in September is notably wet, with an average of 15 rainy days, and a total of 130 mm of precipitation.
Temperatures
Rain 🌧️
15
Dry days
15
Rainy days
0
Snow days
18°/10°
Temperatures
10 km/h
Avg max wind
80 %
Avg humidity
Wahlkreis St. Gallen Weather September
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Temperatures trend during September in Wahlkreis St. Gallen
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September weather in Wahlkreis St. Gallen day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Moderate rain at times | 21° /12° | 3.1 mm | 5 | |
| 2 Sept. |  Sunny | 22° /12° | 3.7 mm | 5 | |
| 3 Sept. | Sunny | 22° /12° | 2 mm | 5 | |
| 4 Sept. |  Partly cloudy | 24° /13° | 3.4 mm | 6 | |
| 5 Sept. |  Patchy rain possible | 21° /12° | 7.7 mm | 4 | |
| 6 Sept. | Sunny | 21° /10° | 0 mm | 5 | |
| 7 Sept. | Sunny | 24° /12° | 0.1 mm | 5 | |
| 8 Sept. | Sunny | 24° /14° | 4.5 mm | 6 | |
| 9 Sept. | Light rain shower | 19° /12° | 10.3 mm | 4 | |
| 10 Sept. | Patchy rain possible | 18° /11° | 1.9 mm | 3 | |
| 11 Sept. | Sunny | 19° /10° | 3.5 mm | 5 | |
| 12 Sept. |  Thundery outbreaks possible | 16° /10° | 3.1 mm | 4 | |
| 13 Sept. | Light rain shower | 16° /10° | 6.4 mm | 3 | |
| 14 Sept. | Light rain shower | 16° /10° | 8.8 mm | 3 | |
| 15 Sept. | Partly cloudy | 19° /9° | 0.9 mm | 5 | |
| 16 Sept. | Patchy rain possible | 17° /9° | 2.6 mm | 4 | |
| 17 Sept. |  Overcast | 17° /9° | 1.7 mm | 4 | |
| 18 Sept. | Sunny | 19° /9° | 6.8 mm | 5 | |
| 19 Sept. | Sunny | 20° /10° | 0 mm | 5 | |
| 20 Sept. | Overcast | 23° /13° | 0 mm | 5 | |
| 21 Sept. | Overcast | 19° /11° | 0 mm | 4.8 | |
| 22 Sept. | Sunny | 18° /7° | 0 mm | 5 | |
| 23 Sept. | Sunny | 17° /7° | 0 mm | 5 | |
| 24 Sept. | Sunny | 19° /10° | 0 mm | 5 | |
| 25 Sept. | Sunny | 18° /9° | 5.5 mm | 5 | |
| 26 Sept. | Sunny | 19° /7° | 0 mm | 5 | |
| 27 Sept. | Sunny | 17° /7° | 0 mm | 5 | |
| 28 Sept. | Sunny | 20° /8° | 0 mm | 4 | |
| 29 Sept. | Overcast | 23° /16° | 0 mm | 5 | |
| 30 Sept. | Light rain shower | 20° /7° | 35.4 mm | 3 | |
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Important Notice
Our weather forecast for Wahlkreis St. Gallen 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 Wahlkreis St. Gallen forecast closer to your planned date for the most up-to-date weather information.
Change Month
Wahlkreis St. Gallen in September - FAQ
What are the expected maximum and minimum temperatures in Wahlkreis St. Gallen 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 Wahlkreis St. Gallen during September?
Significant rainfall exceeding 130 mm is expected in Wahlkreis St. Gallen during September, occurring over more than 15 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Wahlkreis St. Gallen during September?
The average wind speed in Wahlkreis St. Gallen during September is 10 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Wahlkreis St. Gallen
Explore the daily rainfall trends and prepare for Wahlkreis St. Gallens September weather 💧
Typically, Wahlkreis St. Gallen has 15 rainy days in September with a total of 130 mm of rainfall.
UV exposure in Wahlkreis St. Gallen during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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