Saint Gallen
August
Weather in Saint Gallen for August 2025
Your guide to Saint Gallen weather in August - trends and predictions
In general, the average temperature in Saint Gallen at the beginning of August is 20.9 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 19.4 °C by the end of August.
Saint Gallen experiences an exceptionally high level of rainfall in August, with more than 20 rainy days on average.
Is August a good time to visit Saint Gallen? check out the best time to travel to Saint Gallen page.
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9
Dry days
22
Rainy days
0
Snow days
22°/13°
Temperatures
11 km/h
Avg max wind
76 %
Avg humidity
Saint Gallen in August average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  21° | 2 25° | 3  21° | ||||
| 4 19° | 5 21° | 6 19° | 7 20° | 8  20° | 9 22° | 10  24° |
| 11 26° | 12 28° | 13 26° | 14 26° | 15 25° | 16  24° | 17 24° |
| 18 22° | 19 22° | 20 25° | 21 24° | 22 25° | 23 27° | 24 29° |
| 25  22° | 26 18° | 27  18° | 28 18° | 29 18° | 30 21° | 31 21° |
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Temperatures trend during August in Saint Gallen
See the weather trend as well as the moving average line
August weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. | Moderate or heavy rain shower | 21° /14° | 19.2 mm | 5 | |
| 2 Aug. | Moderate or heavy rain shower | 25° /13° | 12.5 mm | 6 | |
| 3 Aug. | Patchy rain possible | 21° /14° | 4.7 mm | 5 | |
| 4 Aug. | Moderate or heavy rain shower | 19° /12° | 12.1 mm | 5 | |
| 5 Aug. | Moderate rain at times | 21° /12° | 5.9 mm | 5 | |
| 6 Aug. | Moderate or heavy rain shower | 19° /12° | 14.7 mm | 5 | |
| 7 Aug. | Moderate or heavy rain shower | 20° /11° | 6.8 mm | 5 | |
| 8 Aug. | Sunny | 20° /11° | 1.5 mm | 5 | |
| 9 Aug. | Patchy rain possible | 22° /13° | 0.7 mm | 5 | |
| 10 Aug. | Partly cloudy | 24° /13° | 0 mm | 7 | |
| 11 Aug. | Sunny | 26° /14° | 0.4 mm | 7 | |
| 12 Aug. | Moderate rain at times | 28° /15° | 3.1 mm | 6 | |
| 13 Aug. | Sunny | 26° /15° | 0.7 mm | 7 | |
| 14 Aug. | Moderate rain at times | 26° /16° | 3.5 mm | 6 | |
| 15 Aug. | Moderate rain at times | 25° /16° | 1.6 mm | 6 | |
| 16 Aug. | Cloudy | 24° /16° | 6.8 mm | 6 | |
| 17 Aug. | Patchy rain possible | 24° /15° | 9.4 mm | 6 | |
| 18 Aug. | Partly cloudy | 22° /14° | 8.6 mm | 6 | |
| 19 Aug. | Sunny | 22° /15° | 2.1 mm | 6 | |
| 20 Aug. | Sunny | 25° /14° | 0 mm | 6 | |
| 21 Aug. | Sunny | 24° /15° | 1.7 mm | 6 | |
| 22 Aug. | Sunny | 25° /14° | 0.1 mm | 7 | |
| 23 Aug. | Patchy rain possible | 27° /15° | 0.2 mm | 7 | |
| 24 Aug. | Sunny | 29° /16° | 0.4 mm | 7 | |
| 25 Aug. | Patchy light rain with thunder | 22° /14° | 10.2 mm | 5 | |
| 26 Aug. | Patchy light rain with thunder | 18° /13° | 35.6 mm | 5 | |
| 27 Aug. | Heavy rain | 18° /11° | 56.5 mm | 4 | |
| 28 Aug. | Heavy rain | 18° /11° | 62.4 mm | 4 | |
| 29 Aug. | Light rain shower | 18° /12° | 19 mm | 5 | |
| 30 Aug. | Patchy rain possible | 21° /11° | 1 mm | 5 | |
| 31 Aug. | Light rain shower | 21° /12° | 2.7 mm | 5 | |
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Important Notice
Our weather forecast for Saint Gallen in August 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 August - FAQ
What are the expected maximum and minimum temperatures in Saint Gallen during August?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Saint Gallen during August?
Significant rainfall exceeding 481.3 mm is expected in Saint Gallen during August, occurring over more than 22 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Saint Gallen during August?
The average wind speed in Saint Gallen during August is 11 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Saint Gallen in August?
As you prepare for your trip to Saint Gallen in August, 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 August, 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
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- 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
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