September weather forecastHalluin, France
September
Weather in September
September, the first month of the autumn in Halluin, is still a comfortable month, with an average temperature fluctuating between 11.6°C (52.9°F) and 19.8°C (67.6°F).Temperature
With the onset of September, Halluin's climate undergoes a slight change as the average high-temperature moves from a moderately hot 23.2°C (73.8°F) in August to an enjoyable 19.8°C (67.6°F). September brings with it a nighttime average temperature of 11.6°C (52.9°F).Humidity
In Halluin, the average relative humidity in September is 77%.Rainfall
September is the month with the least rainfall in Halluin. Rain falls for 14.3 days and accumulates 28mm (1.1") of precipitation.Snowfall
April through October are months without snowfall in Halluin, France.Daylight
In Halluin, the average length of the day in September is 12h and 37min.On the first day of the month, sunrise is at 07:02 and sunset at 20:32. On the last day of September, sunrise is at 07:47 and sunset at 19:27 CEST.
Sunshine
In September, the average sunshine in Halluin is 7.3h.UV index
In September, the average daily maximum UV index in Halluin is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Halluin, France
- Average high temperature in September: 19.8°C
The warmest month (with the highest average high temperature) is July (23.3°C).
The month with the lowest average high temperature is January (5.8°C).
- Average low temperature in September: 11.6°C
The month with the highest average low temperature is August (14.2°C).
The coldest month (with the lowest average low temperature) is January (1.5°C).
Average pressure in September
Halluin, France
- Average pressure in September: 1017.5mbar
The month with the highest atmospheric pressure is September (1017.5mbar).
The month with the lowest atmospheric pressure is November (1012.1mbar).
Average wind speed in September
Halluin, France
- Average wind speed in September: 12.4km/h
The windiest month (with the highest average wind speed) is December (17.6km/h).
The calmest month (with the lowest average wind speed) is August (12.2km/h).
Average humidity in September
Halluin, France
- Average humidity in September: 77%
The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is August (73%).
Average rainfall in September
Halluin, France
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is December (61mm).
The driest month (with the least rainfall) is September (28mm).
Average rainfall days in September
Halluin, France
- Average rainfall days in September: 14.3 days
The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is September (14.3 days).
Average snowfall in September
Halluin, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (37mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Halluin, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.7 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
Halluin, France
- Average daylight in September: 12h and 36min
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 18min
The month with the most sunshine is June (Average sunshine: 10h and 0min).
The months with the least sunshine are January and December (Average sunshine: 4h and 0min).
Average sunshine days in September
Halluin, France
- Average sunshine days in September: 12.2 days
The month with the most sunshine days is March (12.8 days).
The month with the least sunshine days is August (8.3 days).
Average UV index in September
Halluin, 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
Halluin, France
- Average cloud cover in September: 42
The months with the most cloud cover are January and December (Cloud cover 60).
The month with the least cloud cover is April (Cloud cover 40).
Average visibility in September
Halluin, France
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
