Saint Gallen
May
Weather in Saint Gallen for May 2025
Your guide to Saint Gallen weather in May - trends and predictions
In general, the average temperature in Saint Gallen at the beginning of May is 15.1 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 18 °C by the end of May.
Expect significant rainfall in Saint Gallen during May, with an average of 18 rainy days.
Is May a good time to visit Saint Gallen? check out the best time to travel to Saint Gallen page.
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13
Dry days
18
Rainy days
0
Snow days
18°/7°
Temperatures
13 km/h
Avg max wind
83 %
Avg humidity
Saint Gallen in May average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  15° | 2  13° | 3  14° | 4  16° | |||
| 5  17° | 6 17° | 7 14° | 8 12° | 9 16° | 10 15° | 11 14° |
| 12 16° | 13 15° | 14 17° | 15 16° | 16 13° | 17 12° | 18 15° |
| 19 17° | 20 18° | 21  16° | 22 18° | 23 14° | 24 14° | 25 17° |
| 26 19° | 27 19° | 28 19° | 29 19° | 30 17° | 31 16° |
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Temperatures trend during May in Saint Gallen
See the weather trend as well as the moving average line
May weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May | Moderate or heavy rain shower | 15° /7° | 3.9 mm | 4 | |
| 2 May | Heavy rain at times | 13° /6° | 7 mm | 3 | |
| 3 May | Cloudy | 14° /5° | 1.8 mm | 4 | |
| 4 May | Partly cloudy | 16° /6° | 0.8 mm | 4 | |
| 5 May | Patchy rain possible | 17° /8° | 3.6 mm | 4 | |
| 6 May | Patchy rain possible | 17° /8° | 6.2 mm | 4 | |
| 7 May | Patchy rain possible | 14° /8° | 4.5 mm | 4 | |
| 8 May | Moderate or heavy rain shower | 12° /9° | 17.4 mm | 3 | |
| 9 May | Patchy rain possible | 16° /7° | 7.8 mm | 4 | |
| 10 May | Moderate or heavy rain shower | 15° /6° | 14.3 mm | 4 | |
| 11 May | Moderate or heavy rain shower | 14° /6° | 5.8 mm | 4 | |
| 12 May | Patchy rain possible | 16° /7° | 1.2 mm | 4 | |
| 13 May | Moderate rain at times | 15° /8° | 3.1 mm | 4 | |
| 14 May | Moderate rain at times | 17° /6° | 4.8 mm | 4 | |
| 15 May | Heavy rain at times | 16° /8° | 8.6 mm | 4 | |
| 16 May | Moderate or heavy rain shower | 13° /7° | 20 mm | 4 | |
| 17 May | Patchy rain possible | 12° /5° | 13.2 mm | 3 | |
| 18 May | Partly cloudy | 15° /5° | 7.5 mm | 4 | |
| 19 May | Patchy rain possible | 17° /6° | 2 mm | 4 | |
| 20 May | Patchy rain possible | 18° /8° | 2.6 mm | 5 | |
| 21 May | Overcast | 16° /8° | 4.1 mm | 4 | |
| 22 May | Moderate rain at times | 18° /9° | 5 mm | 4 | |
| 23 May | Moderate or heavy rain shower | 14° /9° | 6.3 mm | 4 | |
| 24 May | Patchy rain possible | 14° /7° | 5.8 mm | 4 | |
| 25 May | Cloudy | 17° /7° | 3.1 mm | 4 | |
| 26 May | Cloudy | 19° /10° | 0.7 mm | 4 | |
| 27 May | Cloudy | 19° /9° | 8.2 mm | 5 | |
| 28 May | Partly cloudy | 19° /8° | 3.6 mm | 5 | |
| 29 May | Overcast | 19° /8° | 1.9 mm | 5 | |
| 30 May | Patchy rain possible | 17° /9° | 17.4 mm | 4 | |
| 31 May | Cloudy | 16° /8° | 14.8 mm | 4 | |
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Important Notice
Our weather forecast for Saint 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 Saint Gallen forecast closer to your planned date for the most up-to-date weather information.
Saint Gallen in May - FAQ
What are the expected maximum and minimum temperatures in Saint Gallen during May?
Enjoy moderate daytime temperatures of up to 18° and cooler nights around 7°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Saint Gallen during May?
Significant rainfall exceeding 319 mm is expected in Saint Gallen during May, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Saint Gallen during May?
The average wind speed in Saint Gallen during May is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Saint Gallen in May?
As you prepare for your trip to Saint Gallen in May, 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 Saint Gallen, during May, 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
May rainfall patterns in Saint Gallen
Explore the daily rainfall trends and prepare for Saint Gallens May weather 💧
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