September weather forecastGuern, France
September
Weather in September
September, the first month of the autumn in Guern, is still a comfortable month, with an average temperature ranging between max 19.7°C (67.5°F) and min 10.3°C (50.5°F).Temperature
September notes an average high-temperature of a refreshing 19.7°C (67.5°F), subtly differing from August's 21.3°C (70.3°F). Throughout September, Guern records an average temperature of 10.3°C (50.5°F) at night.Humidity
July and September, with an average relative humidity of 81%, are the least humid months.Rainfall
The month with the least rainfall is September, when the rain falls for 12.4 days and typically collects 23mm (0.91") of precipitation.Snowfall
In Guern, snow does not fall in May through October.Daylight
In September, the average length of the day in Guern is 12h and 34min.On the first day of the month, sunrise is at 07:31 and sunset at 20:53. On the last day of September, sunrise is at 08:10 and sunset at 19:53 CEST.
Sunshine
In September, the average sunshine in Guern is 7.2h.UV index
In September, the average daily maximum UV index in Guern is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 4 in September translates into this advice:
Prioritize safety - Recommendations to avert sunburn are shared. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Guern, France
- Average high temperature in September: 19.7°C
The warmest month (with the highest average high temperature) is July (21.4°C).
The month with the lowest average high temperature is January (8.4°C).
- Average low temperature in September: 10.3°C
The months with the highest average low temperature are July and August (12°C).
The coldest month (with the lowest average low temperature) is February (3°C).
Average pressure in September
Guern, France
- Average pressure in September: 1018.4mbar
The month with the highest atmospheric pressure is September (1018.4mbar).
The month with the lowest atmospheric pressure is November (1012.4mbar).
Average wind speed in September
Guern, France
- Average wind speed in September: 12km/h
The windiest month (with the highest average wind speed) is February (16.9km/h).
The calmest month (with the lowest average wind speed) is August (11.5km/h).
Average humidity in September
Guern, France
- Average humidity in September: 81%
The month with the highest relative humidity is December (89%).
The months with the lowest relative humidity are July and September (81%).
Average rainfall in September
Guern, France
- Average rainfall in September: 23mm
The wettest month (with the highest rainfall) is December (76mm).
The driest month (with the least rainfall) is September (23mm).
Average rainfall days in September
Guern, France
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is January (18.3 days).
The month with the least rainy days is September (12.4 days).
Average snowfall in September
Guern, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (17mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Guern, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Guern, France
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 7h and 12min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in September
Guern, France
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is September (13.8 days).
The month with the least sunshine days is November (7.1 days).
Average UV index in September
Guern, 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
Guern, France
- Average cloud cover in September: 45
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is September (Cloud cover 45).
Average visibility in September
Guern, France
- Average visibility in September: 8km
The months with the highest visibility are February, March and December (9km).
The months with the lowest visibility are January, April, May, June, July, August, September, October and November (8km).
