September weather forecastHennebont, France
September
Weather in September
September, the first month of the autumn in Hennebont, is also an enjoyable month, with an average temperature varying between 19.3°C (66.7°F) and 12.6°C (54.7°F).Temperature
A minimal variation is noted in Hennebont's average high-temperature at the onset of September, reaching an enjoyable 19.3°C (66.7°F) from August's 20.8°C (69.4°F). Hennebont's nighttime temperature in September falls to an average of 12.6°C (54.7°F).Humidity
The months with the lowest humidity are April, July and September, with an average relative humidity of 79%.Rainfall
In Hennebont, in September, it is raining for 10.8 days, with typically 28mm (1.1") of accumulated precipitation. In Hennebont, during the entire year, the rain falls for 176.4 days and collects up to 623mm (24.53") of precipitation.Snowfall
March, May through November are months without snowfall.Daylight
The average length of the day in September in Hennebont is 12h and 34min.On the first day of September in Hennebont, sunrise is at 07:32 and sunset at 20:53. On the last day of the month, sunrise is at 08:11 and sunset at 19:54 CEST.
Sunshine
The average sunshine in September in Hennebont is 7.8h.UV index
In Hennebont, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Act with care - The suggestion to avoid sunburn is emphasized. To guard against the harmful effects of the Sun, minimize exposure during midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Hennebont, France
- Average high temperature in September: 19.3°C
The warmest months (with the highest average high temperature) are July and August (20.8°C).
The months with the lowest average high temperature are January and February (9.3°C).
- Average low temperature in September: 12.6°C
The month with the highest average low temperature is July (14.3°C).
The coldest month (with the lowest average low temperature) is February (5.3°C).
Average pressure in September
Hennebont, France
- Average pressure in September: 1018.5mbar
The month with the highest atmospheric pressure is September (1018.5mbar).
The month with the lowest atmospheric pressure is November (1012.8mbar).
Average wind speed in September
Hennebont, France
- Average wind speed in September: 15.5km/h
The windiest months (with the highest average wind speed) are January, February and December (21.6km/h).
The calmest month (with the lowest average wind speed) is August (14.9km/h).
Average humidity in September
Hennebont, France
- Average humidity in September: 79%
The months with the highest relative humidity are January and December (84%).
The months with the lowest relative humidity are April, July and September (79%).
Average rainfall in September
Hennebont, France
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is November (87mm).
The driest month (with the least rainfall) is July (27mm).
Average rainfall days in September
Hennebont, France
- Average rainfall days in September: 10.8 days
The month with the highest number of rainy days is December (17.8 days).
The month with the least rainy days is September (10.8 days).
Average snowfall in September
Hennebont, France
- Average snowfall in September: 0mm
The month with the highest snowfall is February (4mm).
The months with the least snowfall are March, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Hennebont, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1 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
Hennebont, France
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 7h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Hennebont, France
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is September (16.5 days).
The month with the least sunshine days is November (8.5 days).
Average UV index in September
Hennebont, France
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Hennebont, France
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 35).
Average visibility in September
Hennebont, France
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September and November (10km).
The months with the lowest visibility are January, October and December (9km).
