September weather forecastSaint-Blaise, Switzerland
September
Weather in September
September, the first month of the autumn in Saint-Blaise, is also an enjoyable month, with an average temperature fluctuating between 18.1°C (64.6°F) and 8.1°C (46.6°F).Temperature
With the commencement of September, Saint-Blaise records a moderate temperature decline, with the average high easing from August's agreeable 22.3°C (72.1°F) to an enjoyable 18.1°C (64.6°F). An average minimum temperature of 8.1°C (46.6°F) marks the month of September in Saint-Blaise.Humidity
In Saint-Blaise, the average relative humidity in September is 83%.Rainfall
In Saint-Blaise, Switzerland, in September, it is raining for 14.9 days, with typically 37mm (1.46") of accumulated precipitation. Throughout the year, in Saint-Blaise, there are 179.2 rainfall days, and 566mm (22.28") of precipitation is accumulated.Snowfall
In Saint-Blaise, 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 06:52 and sunset at 20:11. On the last day of September, sunrise is at 07:30 and sunset at 19:13 CEST.
Sunshine
The average sunshine in September in Saint-Blaise is 7.8h.UV index
In September, the average daily maximum UV index in Saint-Blaise is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: The UV index of 3 during September leads to these advisories:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Saint-Blaise, Switzerland
- Average high temperature in September: 18.1°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 (2.7°C).
- Average low temperature in September: 8.1°C
The month with the highest average low temperature is July (11.7°C).
The coldest month (with the lowest average low temperature) is February (-3.3°C).
Average pressure in September
Saint-Blaise, 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
Saint-Blaise, Switzerland
- Average wind speed in September: 8.3km/h
The windiest month (with the highest average wind speed) is February (12km/h).
The calmest month (with the lowest average wind speed) is August (7.1km/h).
Average humidity in September
Saint-Blaise, Switzerland
- Average humidity in September: 83%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is April (79%).
Average rainfall in September
Saint-Blaise, Switzerland
- Average rainfall in September: 37mm
The wettest months (with the highest rainfall) are June and August (75mm).
The driest month (with the least rainfall) is January (27mm).
Average rainfall days in September
Saint-Blaise, Switzerland
- Average rainfall days in September: 14.9 days
The month with the highest number of rainy days is July (20.2 days).
The month with the least rainy days is February (8.8 days).
Average snowfall in September
Saint-Blaise, Switzerland
- Average snowfall in September: 0mm
The month with the highest snowfall is February (65mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Saint-Blaise, Switzerland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Saint-Blaise, 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: 7h and 48min
The month with the most sunshine is July (Average sunshine: 9h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).
Average sunshine days in September
Saint-Blaise, Switzerland
- Average sunshine days in September: 12.6 days
The month with the most sunshine days is October (15.3 days).
The month with the least sunshine days is May (8.4 days).
Average UV index in September
Saint-Blaise, Switzerland
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Saint-Blaise, Switzerland
- Average cloud cover in September: 44
The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in September
Saint-Blaise, Switzerland
- Average visibility in September: 8km
The month with the highest visibility is March (9km).
The months with the lowest visibility are January, February, April, May, June, July, August, September, October, November and December (8km).
