Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
As September arrives, Blonay's weather displays a minor decrease in high-temperatures, transitioning from August's comfortable 19.8°C (67.6°F) to a still enjoyable 16°C (60.8°F). An average low-temperature of 6°C (42.8°F) is observed during September nights in Blonay.Humidity
In September, the average relative humidity is 80%.Rainfall
September is the month with the least rainfall. Rain falls for 16.9 days and accumulates 54mm (2.13") of precipitation.Snowfall
January through May, September through December are months with snowfall in Blonay. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 1mm (0.04") of snow. In Blonay, Switzerland, during the entire year, snow falls for 31.1 days and aggregates up to 561mm (22.09") of snow.Daylight
In September, the average length of the day in Blonay is 12h and 33min.On the first day of September, sunrise is at 06:53 and sunset at 20:11. On the last day of the month, sunrise is at 07:30 and sunset at 19:14 CEST.
Sunshine
In September, the average sunshine is 8.9h.UV index
In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: In September, the average maximum UV index of 3 translates into the following recommendations:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Blonay in September?
What is the average humidity in September in Blonay?
What is the driest month in Blonay?
How many days does it rain in September in Blonay?
When does it start to snow in Blonay?
What is the average length of the day in September in Blonay?
What time are sunrise and sunset in September in Blonay?
How long on average sun shines in September in Blonay?
What is the UV index intensity in September in Blonay?
Average temperature in September
Blonay, Switzerland
- Average high temperature in September: 16°C
The warmest months (with the highest average high temperature) are July and August (19.8°C).
The month with the lowest average high temperature is January (0.6°C).
- Average low temperature in September: 6°C
The month with the highest average low temperature is July (9.3°C).
The coldest month (with the lowest average low temperature) is February (-7.1°C).
Average pressure in September
Blonay, Switzerland
- Average pressure in September: 1018.4mbar
The month with the highest atmospheric pressure is December (1021.1mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in September
Blonay, Switzerland
- Average wind speed in September: 6.9km/h
The windiest month (with the highest average wind speed) is December (9.2km/h).
The calmest month (with the lowest average wind speed) is August (6.5km/h).
Average humidity in September
Blonay, Switzerland
- Average humidity in September: 80%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is August (77%).
Average rainfall in September
Blonay, Switzerland
- Average rainfall in September: 54mm
The wettest month (with the highest rainfall) is May (144mm).
The driest month (with the least rainfall) is September (54mm).
Average rainfall days in September
Blonay, Switzerland
- Average rainfall days in September: 16.9 days
The month with the highest number of rainy days is May (23.5 days).
The month with the least rainy days is October (13.3 days).
Average snowfall in September
Blonay, Switzerland
- Average snowfall in September: 1mm
The month with the highest snowfall is January (148mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in September
Blonay, Switzerland
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (8.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Blonay, Switzerland
- Average daylight in September: 12h and 3min
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 42min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days in September
Blonay, Switzerland
- Average sunshine days in September: 9.6 days
The month with the most sunshine days is October (15 days).
The month with the least sunshine days is May (4.3 days).
Average UV index in September
Blonay, Switzerland
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Blonay, Switzerland
- Average cloud cover in September: 33
The months with the most cloud cover are January, February, March, May and December (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Blonay, Switzerland
- Average visibility in September: 8km
The months with the highest visibility are October and November (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September and December (8km).
