September weather forecastWengen, Switzerland
September weather forecast for Wengen, Switzerland: The first month of the autumn, September, is still a cool month in Wengen, Switzerland, with an average temperature ranging between max 11.6°C (52.9°F) and min 2.5°C (36.5°F). In Wengen, in September, it is raining for 15.5 days, with typically 41mm (1.61") of accumulated precipitation.
September
Weather in September
The first month of the autumn, September, is still a cool month in Wengen, Switzerland, with an average temperature ranging between max 11.6°C (52.9°F) and min 2.5°C (36.5°F).Temperature
September's onset corresponds with a subtle shift in the average high-temperature, slightly moving from a comfortable 16°C (60.8°F) in August to a cool 11.6°C (52.9°F). Wengen experiences an average low-temperature of 2.5°C (36.5°F) in the month of September.Humidity
In Wengen, the average relative humidity in September is 85%.Rainfall
In September, the rain falls for 15.5 days. Throughout September, 41mm (1.61") of precipitation is accumulated. Throughout the year, there are 154.5 rainfall days, and 696mm (27.4") of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 1 snowfall days, it receives 6mm (0.24") of snow. Throughout the year, there are 95.2 snowfall days, and 1508mm (59.37") of snow is accumulated.Daylight
In September, the average length of the day is 12h and 33min.On the first day of September, sunrise is at 06:48 and sunset at 20:07. On the last day of the month, sunrise is at 07:26 and sunset at 19:10 CEST.
Sunshine
The average sunshine in September is 7.5h.UV index
The average daily maximum UV index in September is 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The average daily UV index of 2 in September transforms into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Wengen, Switzerland
- Average high temperature in September: 11.6°C
The warmest month (with the highest average high temperature) is August (16°C).
The month with the lowest average high temperature is January (-2.7°C).
- Average low temperature in September: 2.5°C
The months with the highest average low temperature are July and August (5.8°C).
The coldest month (with the lowest average low temperature) is February (-12.1°C).
Average pressure in September
Wengen, Switzerland
- Average pressure in September: 1018.4mbar
The month with the highest atmospheric pressure is December (1021mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in September
Wengen, Switzerland
- Average wind speed in September: 6.3km/h
The windiest month (with the highest average wind speed) is December (8.7km/h).
The calmest month (with the lowest average wind speed) is August (5.9km/h).
Average humidity in September
Wengen, Switzerland
- Average humidity in September: 85%
The month with the highest relative humidity is March (92%).
The months with the lowest relative humidity are July and August (83%).
Average rainfall in September
Wengen, Switzerland
- Average rainfall in September: 41mm
The wettest month (with the highest rainfall) is June (92mm).
The driest month (with the least rainfall) is February (33mm).
Average rainfall days in September
Wengen, Switzerland
- Average rainfall days in September: 15.5 days
The month with the highest number of rainy days is July (22.8 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in September
Wengen, Switzerland
- Average snowfall in September: 6mm
The months with the highest snowfall are January, November and December (239mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Wengen, Switzerland
- Average snowfall days in September: 1 days
The month with the highest number of snowfall days is January (17.4 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Wengen, Switzerland
- Average daylight in September: 12h and 30min
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: 7h and 30min
The months with the most sunshine are July and August (Average sunshine: 9h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in September
Wengen, Switzerland
- Average sunshine days in September: 11.3 days
The month with the most sunshine days is October (15.6 days).
The month with the least sunshine days is July (5.1 days).
Average UV index in September
Wengen, Switzerland
- Average UV index in September: 2
The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are January, March and November (UV index 1).
Average cloud cover in September
Wengen, Switzerland
- Average cloud cover in September: 50
The month with the most cloud cover is February (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 46).
Average visibility in September
Wengen, Switzerland
- Average visibility in September: 7km
The months with the highest visibility are June, July, August, September, October, November and December (7km).
The months with the lowest visibility are January, February, March, April and May (6km).
