September weather forecastVasön, Switzerland
September
Weather in September
September, the first month of the autumn in Vasön, is still a mild month, with an average temperature ranging between min 3.7°C (38.7°F) and max 14.6°C (58.3°F).Temperature
September is marked by a subtle drop in average high-temperatures, transitioning from a comfortable 19°C (66.2°F) in August to a mild 14.6°C (58.3°F). The average nighttime temperature in Vasön lowers to a wintry 3.7°C (38.7°F) throughout September.Humidity
In September, the average relative humidity is 81%.Rainfall
In September, the rain falls for 17.5 days. Throughout September, 62mm (2.44") of precipitation is accumulated. In Vasön, Switzerland, during the entire year, the rain falls for 211.5 days and collects up to 1072mm (42.2") of precipitation.Snowfall
June through September are months without snowfall in Vasön, Switzerland.Daylight
In Vasön, the average length of the day in September is 12h and 34min.On the first day of the month, sunrise is at 06:42 and sunset at 20:01. On the last day of September, sunrise is at 07:20 and sunset at 19:03 CEST.
Sunshine
In Vasön, the average sunshine in September is 9h.UV index
In Vasön, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In September, a daily UV index of 3 turns into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. The solar radiation around mid-day is intense; avoid the Sun and stay safe. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Vasön, Switzerland
- Average high temperature in September: 14.6°C
The warmest month (with the highest average high temperature) is August (19°C).
The month with the lowest average high temperature is January (-1.3°C).
- Average low temperature in September: 3.7°C
The month with the highest average low temperature is August (7.3°C).
The coldest month (with the lowest average low temperature) is February (-10°C).
Average pressure in September
Vasön, Switzerland
- Average pressure in September: 1018.3mbar
The month with the highest atmospheric pressure is December (1020.8mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).
Average wind speed in September
Vasön, Switzerland
- Average wind speed in September: 6.6km/h
The windiest month (with the highest average wind speed) is November (8.2km/h).
The calmest month (with the lowest average wind speed) is August (6.5km/h).
Average humidity in September
Vasön, Switzerland
- Average humidity in September: 81%
The month with the highest relative humidity is March (90%).
The month with the lowest relative humidity is July (78%).
Average rainfall in September
Vasön, Switzerland
- Average rainfall in September: 62mm
The wettest month (with the highest rainfall) is August (133mm).
The driest month (with the least rainfall) is February (61mm).
Average rainfall days in September
Vasön, Switzerland
- Average rainfall days in September: 17.5 days
The month with the highest number of rainy days is May (24.3 days).
The month with the least rainy days is January (12.3 days).
Average snowfall in September
Vasön, Switzerland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (320mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Vasön, Switzerland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Vasön, Switzerland
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).
Average sunshine days in September
Vasön, Switzerland
- Average sunshine days in September: 9.1 days
The month with the most sunshine days is October (14.6 days).
The month with the least sunshine days is May (3.8 days).
Average UV index in September
Vasön, Switzerland
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are January and November (UV index 1).
Average cloud cover in September
Vasön, Switzerland
- Average cloud cover in September: 39
The month with the most cloud cover is March (Cloud cover 48).
The months with the least cloud cover are August and October (Cloud cover 37).
Average visibility in September
Vasön, Switzerland
- Average visibility in September: 7km
The months with the highest visibility are May, June, July, August, October and November (8km).
The month with the lowest visibility is January (6km).
