September weather forecastWalterswil, Switzerland
September weather for Walterswil, Switzerland: The month with the least rainfall in Walterswil, Switzerland, is September, when the rain falls for 12.8 days and typically collects 37mm (1.46") of precipitation. September, the first month of the autumn in Walterswil, is still a comfortable month, with an average temperature ranging between max 18.3°C (64.9°F) and min 7.5°C (45.5°F).
September
Weather in September
September, the first month of the autumn in Walterswil, is still a comfortable month, with an average temperature ranging between max 18.3°C (64.9°F) and min 7.5°C (45.5°F).Temperature
In Walterswil, the average high-temperature in September slightly decreases from a pleasant 22.3°C (72.1°F) in August to a refreshing 18.3°C (64.9°F). Walterswil's temperature lowers to a mean of 7.5°C (45.5°F) during the nights in September.Humidity
In Walterswil, the average relative humidity in September is 81%.Rainfall
September is the month with the least rainfall in Walterswil. Rain falls for 12.8 days and accumulates 37mm (1.46") of precipitation.Snowfall
In Walterswil, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 34min.On the first day of the month, sunrise is at 06:47 and sunset at 20:08. On the last day of September, in Walterswil, sunrise is at 07:26 and sunset at 19:09 CEST.
Sunshine
The average sunshine in September is 8.8h.UV index
The average daily maximum UV index in September in Walterswil, Switzerland, is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 4 during September leads to these advisories:
Act with care - Obligation to protect against skin and eye damage is highlighted. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Walterswil, Switzerland
- Average high temperature in September: 18.3°C
The warmest month (with the highest average high temperature) is July (22.5°C).
The month with the lowest average high temperature is January (2.3°C).
- Average low temperature in September: 7.5°C
The month with the highest average low temperature is July (11.4°C).
The coldest month (with the lowest average low temperature) is February (-4.3°C).
Average pressure in September
Walterswil, Switzerland
- Average pressure in September: 1018.6mbar
The month with the highest atmospheric pressure is December (1021mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in September
Walterswil, Switzerland
- Average wind speed in September: 6.5km/h
The windiest month (with the highest average wind speed) is March (8.6km/h).
The calmest month (with the lowest average wind speed) is August (6.1km/h).
Average humidity in September
Walterswil, Switzerland
- Average humidity in September: 81%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is July (77%).
Average rainfall in September
Walterswil, Switzerland
- Average rainfall in September: 37mm
The wettest month (with the highest rainfall) is June (99mm).
The driest month (with the least rainfall) is September (37mm).
Average rainfall days in September
Walterswil, Switzerland
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is May (20.1 days).
The month with the least rainy days is February (8.4 days).
Average snowfall in September
Walterswil, Switzerland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (269mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Walterswil, Switzerland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Walterswil, Switzerland
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 8h and 48min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in September
Walterswil, Switzerland
- Average sunshine days in September: 14.2 days
The month with the most sunshine days is October (17.4 days).
The month with the least sunshine days is June (8.3 days).
Average UV index in September
Walterswil, Switzerland
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in September
Walterswil, Switzerland
- Average cloud cover in September: 35
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Walterswil, Switzerland
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (8km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (8km).
