September weather forecastSassenage, France
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Sassenage, France, with an average temperature ranging between max 17.5°C (63.5°F) and min 7.6°C (45.7°F).Temperature
September is characterized by a mild reduction in the average high-temperature, from a pleasant 21.6°C (70.9°F) in August to an enjoyable 17.5°C (63.5°F). During September, the temperature in Sassenage is averaged to a low of 7.6°C (45.7°F) at night.Humidity
In September, the average relative humidity in Sassenage is 81%.Rainfall
September is the month with the least rainfall in Sassenage. Rain falls for 13.2 days and accumulates 46mm (1.81") of precipitation.Snowfall
In Sassenage, snow does not fall in June through September.Daylight
In Sassenage, the average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 06:59 and sunset at 20:14. On the last day of September, in Sassenage, sunrise is at 07:34 and sunset at 19:19 CEST.
Sunshine
The average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September in Sassenage is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 4 during September translates into the following guidance:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sassenage, France
- Average high temperature in September: 17.5°C
The warmest month (with the highest average high temperature) is July (21.7°C).
The month with the lowest average high temperature is January (2.4°C).
- Average low temperature in September: 7.6°C
The month with the highest average low temperature is July (10.9°C).
The coldest month (with the lowest average low temperature) is February (-4.3°C).
Average pressure in September
Sassenage, France
- Average pressure in September: 1017.9mbar
The month with the highest atmospheric pressure is December (1020.7mbar).
The month with the lowest atmospheric pressure is April (1015mbar).
Average wind speed in September
Sassenage, France
- Average wind speed in September: 7.1km/h
The windiest month (with the highest average wind speed) is February (9.3km/h).
The calmest month (with the lowest average wind speed) is September (7.1km/h).
Average humidity in September
Sassenage, France
- Average humidity in September: 81%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (75%).
Average rainfall in September
Sassenage, France
- Average rainfall in September: 46mm
The wettest month (with the highest rainfall) is December (126mm).
The driest month (with the least rainfall) is September (46mm).
Average rainfall days in September
Sassenage, France
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is May (21.4 days).
The month with the least rainy days is October (11.9 days).
Average snowfall in September
Sassenage, France
- Average snowfall in September: 0mm
The month with the highest snowfall is February (149mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Sassenage, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sassenage, France
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 24min
The months with the most sunshine are July and August (Average sunshine: 10h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 18min).
Average sunshine days in September
Sassenage, France
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is October (17.2 days).
The month with the least sunshine days is May (7.1 days).
Average UV index in September
Sassenage, France
- 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, November and December (UV index 2).
Average cloud cover in September
Sassenage, France
- Average cloud cover in September: 35
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Sassenage, France
- Average visibility in September: 8km
The month with the highest visibility is August (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, September, October, November and December (8km).
