September weather forecastDelettes, France
September
Weather in September
September, the first month of the autumn in Delettes, is still a comfortable month, with temperature in the range of an average high of 18.1°C (64.6°F) and an average low of 13.2°C (55.8°F).Temperature
The introduction of September sees an average high-temperature of a still refreshing 18.1°C (64.6°F), hardly deviating from August. September nights in Delettes register a minor temperature decline, steadying at a still refreshing 13.2°C (55.8°F).Humidity
August and September, with an average relative humidity of 79%, are the least humid months in Delettes, France.Rainfall
In September, the rain falls for 14.5 days. Throughout September, 46mm (1.81") of precipitation is accumulated. Throughout the year, there are 191.1 rainfall days, and 621mm (24.45") of precipitation is accumulated.Snowfall
In Delettes, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 37min.On the first day of the month, sunrise is at 07:06 and sunset at 20:35. On the last day of September, sunrise is at 07:50 and sunset at 19:31 CEST.
Sunshine
In Delettes, the average sunshine in September is 7.1h.UV index
The average daily maximum UV index in September in Delettes is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: In September, the UV index of 4 transforms into the following advice:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Delettes, France
- Average high temperature in September: 18.1°C
The warmest month (with the highest average high temperature) is August (19.8°C).
The month with the lowest average high temperature is January (6.8°C).
- Average low temperature in September: 13.2°C
The month with the highest average low temperature is August (15.2°C).
The coldest months (with the lowest average low temperature) are January and February (3.7°C).
Average pressure in September
Delettes, France
- Average pressure in September: 1017.6mbar
The month with the highest atmospheric pressure is September (1017.6mbar).
The month with the lowest atmospheric pressure is November (1011.8mbar).
Average wind speed in September
Delettes, France
- Average wind speed in September: 18.2km/h
The windiest month (with the highest average wind speed) is December (25.6km/h).
The calmest months (with the lowest average wind speed) are July and August (17.2km/h).
Average humidity in September
Delettes, France
- Average humidity in September: 79%
The months with the highest relative humidity are January, November and December (84%).
The months with the lowest relative humidity are August and September (79%).
Average rainfall in September
Delettes, France
- Average rainfall in September: 46mm
The wettest month (with the highest rainfall) is December (83mm).
The driest month (with the least rainfall) is April (29mm).
Average rainfall days in September
Delettes, France
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is November (18.5 days).
The month with the least rainy days is April (13.3 days).
Average snowfall in September
Delettes, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (17mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Delettes, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.6 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Delettes, France
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in September: 7h and 6min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is November (Average sunshine: 3h and 48min).
Average sunshine days in September
Delettes, France
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is April (14.3 days).
The month with the least sunshine days is November (8.5 days).
Average UV index in September
Delettes, France
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 5).
The months with the lowest UV index are January, February and November (UV index 2).
Average cloud cover in September
Delettes, France
- Average cloud cover in September: 43
The month with the most cloud cover is November (Cloud cover 62).
The months with the least cloud cover are April and August (Cloud cover 40).
Average visibility in September
Delettes, France
- Average visibility in September: 10km
The months with the highest visibility are March, April, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, May, November and December (9km).
