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 advent of September denotes an average high-temperature of a refreshing 18.9°C (66°F), subtly different from August's 20.7°C (69.3°F). Throughout September, the temperature in Le Bois-Hellain tends to fall to a consistent average low of 12.9°C (55.2°F).Humidity
The months with the lowest humidity in Le Bois-Hellain are August and September, with an average relative humidity of 79%.Rainfall
In Le Bois-Hellain, France, in September, it is raining for 13.9 days, with typically 36mm (1.42") of accumulated precipitation. Throughout the year, there are 188.8 rainfall days, and 580mm (22.83") of precipitation is accumulated.Snowfall
In Le Bois-Hellain, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 36min.On the first day of the month, sunrise is at 07:15 and sunset at 20:41. On the last day of September, sunrise is at 07:57 and sunset at 19:39 CEST.
Sunshine
In Le Bois-Hellain, the average sunshine in September is 7.5h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In September, a regular UV index of 4 translates into these guidelines:
Ensure safety - Imperative it is to shield skin and eyes from damage. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Le Bois-Hellain?
What is the least humid month in Le Bois-Hellain?
What is the average humidity in September in Le Bois-Hellain?
How many days does it rain in September in Le Bois-Hellain?
When it does not snow in Le Bois-Hellain?
How many hours of daylight does Le Bois-Hellain have in September?
What time are sunrise and sunset in September in Le Bois-Hellain?
How long on average sun shines in September in Le Bois-Hellain?
What is the UV index reading in September in Le Bois-Hellain?
Average temperature in September
Le Bois-Hellain, France
- Average high temperature in September: 18.9°C
The warmest month (with the highest average high temperature) is August (20.7°C).
The month with the lowest average high temperature is January (7.4°C).
- Average low temperature in September: 12.9°C
The month with the highest average low temperature is August (14.7°C).
The coldest months (with the lowest average low temperature) are January and February (3.8°C).
Average pressure in September
Le Bois-Hellain, France
- Average pressure in September: 1018mbar
The month with the highest atmospheric pressure is September (1018mbar).
The month with the lowest atmospheric pressure is November (1012.3mbar).
Average wind speed in September
Le Bois-Hellain, France
- Average wind speed in September: 16.6km/h
The windiest month (with the highest average wind speed) is December (24.1km/h).
The calmest month (with the lowest average wind speed) is August (15km/h).
Average humidity in September
Le Bois-Hellain, France
- Average humidity in September: 79%
The months with the highest relative humidity are January and November (84%).
The months with the lowest relative humidity are August and September (79%).
Average rainfall in September
Le Bois-Hellain, France
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is December (76mm).
The driest month (with the least rainfall) is April (29mm).
Average rainfall days in September
Le Bois-Hellain, France
- Average rainfall days in September: 13.9 days
The month with the highest number of rainy days is January (18.8 days).
The month with the least rainy days is April (13.1 days).
Average snowfall in September
Le Bois-Hellain, 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
Le Bois-Hellain, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.3 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
Le Bois-Hellain, France
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in September: 7h and 3min
The months with the most sunshine are June and July (Average sunshine: 10h and 6min).
The months with the least sunshine are January, November and December (Average sunshine: 4h and 6min).
Average sunshine days in September
Le Bois-Hellain, France
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is July (13.7 days).
The month with the least sunshine days is December (8.4 days).
Average UV index in September
Le Bois-Hellain, 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 and November (UV index 2).
Average cloud cover in September
Le Bois-Hellain, France
- Average cloud cover in September: 40
The months with the most cloud cover are January, November and December (Cloud cover 59).
The months with the least cloud cover are April and July (Cloud cover 39).
Average visibility in September
Le Bois-Hellain, France
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January and December (9km).
