September weather forecastSaillon, Switzerland
September
Weather in September
September, the first month of the autumn in Saillon, is also a fresh month, with temperature in the range of an average high of 12.7°C (54.9°F) and an average low of 3.6°C (38.5°F).Temperature
September's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from August's enjoyable 17°C (62.6°F) to a fresh 12.7°C (54.9°F). Saillon reports an average nighttime low-temperature of 3.6°C (38.5°F) in September.Humidity
In September, the average relative humidity in Saillon is 81%.Rainfall
September is the month with the least rainfall in Saillon. Rain falls for 17.1 days and accumulates 45mm (1.77") of precipitation.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows in Saillon. Throughout September, in the average 0.1 snowfall days, it receives 1mm (0.04") of snow. Throughout the year, in Saillon, there are 35.6 snowfall days, and 419mm (16.5") of snow is accumulated.Daylight
The average length of the day in September is 12h and 32min.On the first day of September in Saillon, sunrise is at 06:52 and sunset at 20:09. On the last day of the month, sunrise is at 07:29 and sunset at 19:13 CEST.
Sunshine
The average sunshine in September in Saillon is 8.4h.UV index
The average daily maximum UV index in September in Saillon, Switzerland, is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average UV index of 3 in September transforms into this advice:
Act with care - The need to guard against sun damage is communicated. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Saillon, Switzerland
- Average high temperature in September: 12.7°C
The warmest month (with the highest average high temperature) is August (17°C).
The month with the lowest average high temperature is January (-2.2°C).
- Average low temperature in September: 3.6°C
The months with the highest average low temperature are July and August (6.4°C).
The coldest month (with the lowest average low temperature) is February (-10.8°C).
Average pressure in September
Saillon, Switzerland
- Average pressure in September: 1018.2mbar
The month with the highest atmospheric pressure is December (1021mbar).
The month with the lowest atmospheric pressure is April (1015.2mbar).
Average wind speed in September
Saillon, Switzerland
- Average wind speed in September: 6.5km/h
The windiest month (with the highest average wind speed) is December (8.3km/h).
The calmest month (with the lowest average wind speed) is August (6.2km/h).
Average humidity in September
Saillon, Switzerland
- Average humidity in September: 81%
The month with the highest relative humidity is March (90%).
The months with the lowest relative humidity are July, August and October (79%).
Average rainfall in September
Saillon, Switzerland
- Average rainfall in September: 45mm
The wettest month (with the highest rainfall) is May (110mm).
The driest month (with the least rainfall) is September (45mm).
Average rainfall days in September
Saillon, Switzerland
- Average rainfall days in September: 17.1 days
The month with the highest number of rainy days is May (23.3 days).
The month with the least rainy days is January (11.8 days).
Average snowfall in September
Saillon, Switzerland
- Average snowfall in September: 1mm
The month with the highest snowfall is January (110mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in September
Saillon, Switzerland
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Saillon, Switzerland
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 8h and 24min
The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in September
Saillon, Switzerland
- Average sunshine days in September: 9.4 days
The month with the most sunshine days is October (15.3 days).
The month with the least sunshine days is May (4.7 days).
Average UV index in September
Saillon, 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 March (UV index 1).
Average cloud cover in September
Saillon, Switzerland
- Average cloud cover in September: 40
The months with the most cloud cover are February and March (Cloud cover 51).
The month with the least cloud cover is October (Cloud cover 36).
Average visibility in September
Saillon, Switzerland
- Average visibility in September: 7km
The months with the highest visibility are June, July, August, October, November and December (8km).
The months with the lowest visibility are January, February, March, April, May and September (7km).
