Sion Weather September
To help you choose the best time to travel, you can find climate data below on the weather in Sion in September.
|average daily high||+21.7°C|
|average daily low||+9.9°C|
|sunny / overcast hours||6.8 / 6.2|
|average monthly precipitation||44 mm|
Temperature in Sion
In September the average daily maximum in Sion is +21.7°C, and the minimum +9.9°C.
The hottest September day on record is +34°C, and the coldest -1°C.
Best beach resorts in September:
There are 13 hours of daylight in Sion in September. Out of these, on average 6.8 are sunny, which means there is quite a lot of sun.
The amount of precipitation in Sion in September is usually 44 mm, a negligible amount.