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

	daytime	13 h
	sunny / overcast hours	6.8 / 6.2
	average monthly precipitation	44 mm

Best time with the soft weather for the sightseeing and long walks in Sion are May, June, July, August, September.

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.

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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.