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 transition into September marks the average high-temperature at a still refreshing 17.9°C (64.2°F), differing minimally from August's 19.5°C (67.1°F). La Chapelle-sur-Dun registers a subtle dip to an average of 13.9°C (57°F) during the nights of September.Humidity
With an average relative humidity of 79%, September is the least humid month in La Chapelle-sur-Dun.Rainfall
In La Chapelle-sur-Dun, France, during September, the rain falls for 13.3 days and regularly aggregates up to 27mm (1.06") of precipitation. Throughout the year, there are 177.4 rainfall days, and 428mm (16.85") of precipitation is accumulated.Snowfall
In La Chapelle-sur-Dun, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 37min.On the first day of the month, sunrise is at 07:12 and sunset at 20:40. On the last day of September, in La Chapelle-sur-Dun, France, sunrise is at 07:55 and sunset at 19:36 CEST.
Sunshine
In La Chapelle-sur-Dun, the average sunshine in September is 7.4h.UV index
In September, the average daily maximum UV index in La Chapelle-sur-Dun is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average UV index of 4 in September transforms into this advice:
Make use of precautions - Suggestions to resist sunburn are communicated. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in La Chapelle-sur-Dun in September?
What is the least humid month in La Chapelle-sur-Dun?
What is the average humidity in September in La Chapelle-sur-Dun?
How much does it rain in La Chapelle-sur-Dun in September?
When it does not snow in La Chapelle-sur-Dun?
How many hours of daylight does La Chapelle-sur-Dun have in September?
When is the sunrise / sunset in September in La Chapelle-sur-Dun?
How long on average sun shines in September in La Chapelle-sur-Dun?
How high is the UV index in September in La Chapelle-sur-Dun?
Average temperature in September
La Chapelle-sur-Dun, France
- Average high temperature in September: 17.9°C
The warmest month (with the highest average high temperature) is August (19.5°C).
The months with the lowest average high temperature are January and February (7.3°C).
- Average low temperature in September: 13.9°C
The month with the highest average low temperature is August (15.4°C).
The coldest month (with the lowest average low temperature) is February (4.2°C).
Average pressure in September
La Chapelle-sur-Dun, France
- Average pressure in September: 1017.8mbar
The month with the highest atmospheric pressure is September (1017.8mbar).
The month with the lowest atmospheric pressure is November (1012.1mbar).
Average wind speed in September
La Chapelle-sur-Dun, France
- Average wind speed in September: 19.2km/h
The windiest month (with the highest average wind speed) is December (27.5km/h).
The calmest month (with the lowest average wind speed) is July (17.3km/h).
Average humidity in September
La Chapelle-sur-Dun, France
- Average humidity in September: 79%
The month with the highest relative humidity is June (84%).
The month with the lowest relative humidity is September (79%).
Average rainfall in September
La Chapelle-sur-Dun, France
- Average rainfall in September: 27mm
The wettest month (with the highest rainfall) is December (51mm).
The driest month (with the least rainfall) is April (23mm).
Average rainfall days in September
La Chapelle-sur-Dun, France
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is October (16.7 days).
The month with the least rainy days is April (12.4 days).
Average snowfall in September
La Chapelle-sur-Dun, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (11mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
La Chapelle-sur-Dun, France
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (1.9 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
La Chapelle-sur-Dun, France
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 12min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The months with the least sunshine are January and November (Average sunshine: 4h and 0min).
Average sunshine days in September
La Chapelle-sur-Dun, France
- Average sunshine days in September: 13.6 days
The month with the most sunshine days is April (14.6 days).
The month with the least sunshine days is November (10.4 days).
Average UV index in September
La Chapelle-sur-Dun, France
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
La Chapelle-sur-Dun, France
- Average cloud cover in September: 40
The months with the most cloud cover are November and December (Cloud cover 60).
The months with the least cloud cover are April, July and August (Cloud cover 39).
Average visibility in September
La Chapelle-sur-Dun, France
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
