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
The arrival of September is marked by a minor reduction in average high-temperature, sliding from an enjoyable 17°C (62.6°F) in August to a fresh 12.7°C (54.9°F). The mean low-temperature during September nights in Saint-Pierre-de-Clages, Switzerland, is an icy 3.6°C (38.5°F).Humidity
In Saint-Pierre-de-Clages, the average relative humidity in September is 81%.Rainfall
September is the month with the least rainfall. Rain falls for 17.1 days and accumulates 45mm (1.77") of precipitation.Snowfall
Months with snowfall are January through May, September through December. 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 Saint-Pierre-de-Clages, during the entire year, snow falls for 35.6 days and aggregates up to 419mm (16.5") of snow.Daylight
In Saint-Pierre-de-Clages, the average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 06:52 and sunset at 20:09. On the last day of September, in Saint-Pierre-de-Clages, sunrise is at 07:28 and sunset at 19:12 CEST.
Sunshine
In September, the average sunshine is 8.4h.UV index
In Saint-Pierre-de-Clages, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index, 3 during September, leads to the following recommendations:
Act with care - The need to guard against sun damage is communicated. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Saint-Pierre-de-Clages in September?
What is the average humidity in September in Saint-Pierre-de-Clages?
What is the driest month in Saint-Pierre-de-Clages?
How much does it rain in Saint-Pierre-de-Clages in September?
When does it start snowing in Saint-Pierre-de-Clages?
How many hours of daylight does Saint-Pierre-de-Clages have in September?
What time are sunrise and sunset in September in Saint-Pierre-de-Clages?
How long on average sun shines in September in Saint-Pierre-de-Clages?
What is the UV index reading in September in Saint-Pierre-de-Clages?
Average temperature in September
Saint-Pierre-de-Clages, 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
Saint-Pierre-de-Clages, 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
Saint-Pierre-de-Clages, 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
Saint-Pierre-de-Clages, 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
Saint-Pierre-de-Clages, 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
Saint-Pierre-de-Clages, 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
Saint-Pierre-de-Clages, 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
Saint-Pierre-de-Clages, 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
Saint-Pierre-de-Clages, Switzerland
- Average daylight in September: 12h and 3min
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 2min
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
Saint-Pierre-de-Clages, 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
Saint-Pierre-de-Clages, 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
Saint-Pierre-de-Clages, 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
Saint-Pierre-de-Clages, 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).
