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
Weather in September
Temperature
Clairmarais, France, marks the onset of September with an average high-temperature of a comfortable 18.7°C (65.7°F), subtly divergent from August's 21°C (69.8°F). During September, Clairmarais consistently records a temperature low averaging a still refreshing 13.6°C (56.5°F).Humidity
The average relative humidity in September is 76%.Rainfall
In September, the rain falls for 14.1 days. Throughout September, 33mm (1.3") of precipitation is accumulated. In Clairmarais, during the entire year, the rain falls for 185 days and collects up to 507mm (19.96") of precipitation.Snowfall
In Clairmarais, 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 07:05 and sunset at 20:35. On the last day of September, sunrise is at 07:50 and sunset at 19:30 CEST.
Sunshine
In September, the average sunshine is 7.4h.UV index
In September, the average daily maximum UV index in Clairmarais is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: A maximum daily UV index of 4 during September morphs into the following directions:
Ensure safety - Imperative it is to shield skin and eyes from damage. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Frequently asked questions
What are September temperatures in Clairmarais?
What is the average humidity in September in Clairmarais?
How many days does it rain in September in Clairmarais?
When it does not snow in Clairmarais?
What is the average length of the day in September in Clairmarais?
When are sunrise and sunset in September in Clairmarais?
How many hours of sunshine does Clairmarais have in September?
What is the UV index intensity in September in Clairmarais?
Average temperature in September
Clairmarais, France
- Average high temperature in September: 18.7°C
The warmest month (with the highest average high temperature) is August (21°C).
The month with the lowest average high temperature is January (6.8°C).
- Average low temperature in September: 13.6°C
The month with the highest average low temperature is August (15.4°C).
The coldest month (with the lowest average low temperature) is January (3.6°C).
Average pressure in September
Clairmarais, France
- Average pressure in September: 1017.4mbar
The month with the highest atmospheric pressure is September (1017.4mbar).
The month with the lowest atmospheric pressure is November (1011.6mbar).
Average wind speed in September
Clairmarais, France
- Average wind speed in September: 17.7km/h
The windiest month (with the highest average wind speed) is December (24km/h).
The calmest month (with the lowest average wind speed) is July (16.6km/h).
Average humidity in September
Clairmarais, France
- Average humidity in September: 76%
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is August (75%).
Average rainfall in September
Clairmarais, France
- Average rainfall in September: 33mm
The wettest month (with the highest rainfall) is December (59mm).
The driest month (with the least rainfall) is April (22mm).
Average rainfall days in September
Clairmarais, France
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is November (18.3 days).
The month with the least rainy days is April (11.6 days).
Average snowfall in September
Clairmarais, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (28mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Clairmarais, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.9 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
Clairmarais, France
- Average daylight in September: 12h and 4min
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 0min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Clairmarais, France
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is April (16.5 days).
The month with the least sunshine days is November (9.1 days).
Average UV index in September
Clairmarais, 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
Clairmarais, France
- Average cloud cover in September: 41
The month with the most cloud cover is December (Cloud cover 60).
The month with the least cloud cover is April (Cloud cover 38).
Average visibility in September
Clairmarais, France
- Average visibility in September: 10km
The months with the highest visibility are March, April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, November and December (9km).
Clairmarais, France
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