Sion Weather in August
What's the weather like in Sion (Valais) in August 2024?
The climate in Sion during August can be summarized as mild and wet.
August is in the summer in Sion and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around 18°C (64°F), whilst at night 9°C (49°F) is normal.
| Daytime temperature | 17.7°C 63.8°F |
|---|---|
| Nightly temperature | 9.2°C 48.5°F |
| Average temperature | 13.4°C 56.1°F |
| Daily sunshine | 7.1 hrs |
| Avg rainfall | 128 mm 5.1 ins |
| Rainy days | 16 days |
| Sea temperature | 23.1°C 73.5°F |
| Humidity | 75% |
| Windspeed | 8.6kph 5 mph |
On average August is the wettest month of the year in Sion with around 128mm 5.1 inches of rain making it a wet time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.1 hours of sunshine per day.
August temperatures in Sion
August rainfall
August hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Sion in August 2024.
Other monthly averages
Best places to visit in August
Sion weather stats
| Hottest month: | July | 18.4°C 65.1°F |
|---|---|---|
| Driest month: | March | 78mm 3.1ins |
| Sunniest month: | July | 7.9hrs |
| Coldest month: | January | -0.5°C 31.1°F |
| Wettest month: | August | 128mm 5ins |
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