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
With the commencement of September, Coulaines records a moderate temperature decline, with the average high easing from August's warm 24.2°C (75.6°F) to an agreeable 21.1°C (70°F). Coulaines witnesses a consistent average low-temperature of 11.2°C (52.2°F) throughout September.Humidity
The average relative humidity in September is 75%.Rainfall
September is the month with the least rainfall in Coulaines. Rain falls for 8.5 days and accumulates 16mm (0.63") of precipitation.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day in Coulaines is 12h and 34min.On the first day of September in Coulaines, sunrise is at 07:17 and sunset at 20:40. On the last day of the month, sunrise is at 07:57 and sunset at 19:40 CEST.
Sunshine
The average sunshine in September is 7.7h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Frequently asked questions
What are September temperatures in Coulaines?
What is the average humidity in September in Coulaines?
What is the driest month in Coulaines?
How many days does it rain in September in Coulaines?
When it does not snow in Coulaines?
What is the average length of the day in September in Coulaines?
When are sunrise and sunset in September in Coulaines?
How long on average sun shines in September in Coulaines?
What is the UV index reading in September in Coulaines?
Average temperature in September
Coulaines, France
- Average high temperature in September: 21.1°C
The warmest month (with the highest average high temperature) is August (24.2°C).
The month with the lowest average high temperature is January (7.1°C).
- Average low temperature in September: 11.2°C
The month with the highest average low temperature is August (13.7°C).
The coldest month (with the lowest average low temperature) is February (1.8°C).
Average pressure in September
Coulaines, France
- Average pressure in September: 1018.2mbar
The month with the highest atmospheric pressure is December (1018.9mbar).
The month with the lowest atmospheric pressure is November (1013.5mbar).
Average wind speed in September
Coulaines, France
- Average wind speed in September: 11.5km/h
The windiest month (with the highest average wind speed) is February (17km/h).
The calmest month (with the lowest average wind speed) is August (10.9km/h).
Average humidity in September
Coulaines, France
- Average humidity in September: 75%
The months with the highest relative humidity are January and December (88%).
The month with the lowest relative humidity is August (74%).
Average rainfall in September
Coulaines, France
- Average rainfall in September: 16mm
The wettest month (with the highest rainfall) is May (40mm).
The driest month (with the least rainfall) is September (16mm).
Average rainfall days in September
Coulaines, France
- Average rainfall days in September: 8.5 days
The month with the highest number of rainy days is May (16.1 days).
The month with the least rainy days is September (8.5 days).
Average snowfall in September
Coulaines, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (6mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Coulaines, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.3 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
Coulaines, France
- Average daylight in September: 12h and 4min
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 4min
The month with the most sunshine is July (Average sunshine: 9h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Coulaines, France
- Average sunshine days in September: 19.6 days
The month with the most sunshine days is September (19.6 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in September
Coulaines, 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
Coulaines, France
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 38).
Average visibility in September
Coulaines, France
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (9km).
The month with the lowest visibility is May (8km).
Coulaines, France
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