Sankt Gallen
May
Weather in Sankt Gallen for May 2026
Your guide to Sankt Gallen weather in May - trends and predictions
In general, the average temperature in Sankt Gallen at the beginning of May is 15 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 18.1 °C by the end of May.
Sankt Gallen experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 207 mm.
Temperatures
Rain 🌧️
2
Dry days
29
Rainy days
0
Snow days
16°/8°
Temperatures
12 km/h
Avg max wind
82 %
Avg humidity
Sankt Gallen Weather May
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Temperatures trend during May in Sankt Gallen
See the weather trend as well as the moving average line
May weather in Sankt Gallen day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May |  Moderate or heavy rain shower | 16° /7° | 2.7 mm | 4 | |
| 2 May |  Heavy rain at times | 16° /7° | 4.6 mm | 4 | |
| 3 May |  Cloudy | 16° /7° | 4 mm | 4 | |
| 4 May |  Partly cloudy | 16° /6° | 10.4 mm | 4 | |
| 5 May |  Patchy rain possible | 14° /7° | 7.5 mm | 3 | |
| 6 May | Light rain shower | 14° /7° | 5 mm | 3 | |
| 7 May | Patchy rain possible | 13° /6° | 3.9 mm | 3 | |
| 8 May | Moderate or heavy rain shower | 11° /7° | 12 mm | 3 | |
| 9 May | Patchy rain possible | 15° /5° | 5.2 mm | 4 | |
| 10 May | Moderate or heavy rain shower | 15° /5° | 9.6 mm | 4 | |
| 11 May | Moderate or heavy rain shower | 16° /6° | 3.9 mm | 4 | |
| 12 May | Patchy rain possible | 16° /7° | 1 mm | 4 | |
| 13 May | Moderate rain at times | 15° /7° | 2.1 mm | 4 | |
| 14 May | Patchy rain possible | 17° /6° | 3.2 mm | 4 | |
| 15 May | Light rain shower | 16° /7° | 6.4 mm | 4 | |
| 16 May | Moderate or heavy rain shower | 13° /5° | 13.3 mm | 4 | |
| 17 May | Patchy rain possible | 13° /5° | 8.8 mm | 3 | |
| 18 May | Partly cloudy | 16° /5° | 5.1 mm | 4 | |
| 19 May | Patchy rain possible | 18° /6° | 1.3 mm | 4 | |
| 20 May |  Patchy light rain with thunder | 19° /8° | 3.8 mm | 4 | |
| 21 May | Light rain shower | 16° /8° | 9.1 mm | 4 | |
| 22 May | Light rain shower | 15° /8° | 6.5 mm | 4 | |
| 23 May | Moderate or heavy rain shower | 14° /8° | 4.6 mm | 3 | |
| 24 May | Patchy rain possible | 14° /6° | 3.9 mm | 3 | |
| 25 May | Cloudy | 17° /7° | 4.6 mm | 4 | |
| 26 May | Light rain shower | 18° /9° | 5.7 mm | 4 | |
| 27 May | Cloudy | 18° /9° | 5.6 mm | 4 | |
| 28 May | Partly cloudy | 19° /9° | 6.5 mm | 5 | |
| 29 May |  Overcast | 19° /8° | 2.3 mm | 4 | |
| 30 May | Patchy rain possible | 18° /9° | 11.6 mm | 4 | |
| 31 May | Cloudy | 18° /9° | 10 mm | 4 | |
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Important Notice
Our weather forecast for Sankt Gallen in May 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 Sankt Gallen forecast closer to your planned date for the most up-to-date weather information.
Change Month
Sankt Gallen in May - FAQ
What are the expected maximum and minimum temperatures in Sankt Gallen during May?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Sankt Gallen during May?
Significant rainfall exceeding 207 mm is expected in Sankt Gallen during May, occurring over more than 29 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Sankt Gallen during May?
The average wind speed in Sankt Gallen during May is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Sankt Gallen
Explore the daily rainfall trends and prepare for Sankt Gallens May weather 💧
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