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
September witnesses a gentle descent in average high-temperature, descending from August's pleasant 22.5°C (72.5°F) to a refreshing 18.8°C (65.8°F). The average nighttime temperature lowers to a frosty 9.8°C (49.6°F) throughout September.Humidity
In Flawinne, Belgium, the average relative humidity in September is 80%.Rainfall
In Flawinne, during September, the rain falls for 12.9 days and regularly aggregates up to 35mm (1.38") of precipitation. Throughout the year, in Flawinne, there are 179.6 rainfall days, and 508mm (20") of precipitation is accumulated.Snowfall
April through October are months without snowfall in Flawinne.Daylight
In Flawinne, the average length of the day in September is 12h and 37min.On the first day of September in Flawinne, sunrise is at 06:55 and sunset at 20:25. On the last day of the month, sunrise is at 07:40 and sunset at 19:20 CEST.
Sunshine
In Flawinne, the average sunshine in September is 7.4h.UV index
In September, the average daily maximum UV index in Flawinne is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Frequently asked questions
What are the temperatures in Flawinne in September?
What is the average humidity in September in Flawinne?
How many days does it rain in September in Flawinne?
When it does not snow in Flawinne?
How many hours of daylight does Flawinne have in September?
When is the sunrise / sunset in September in Flawinne?
How long on average sun shines in September in Flawinne?
What is the UV index intensity in September in Flawinne?
Average temperature in September
Flawinne, Belgium
- Average high temperature in September: 18.8°C
The warmest month (with the highest average high temperature) is August (22.5°C).
The month with the lowest average high temperature is January (4.3°C).
- Average low temperature in September: 9.8°C
The month with the highest average low temperature is August (12.8°C).
The coldest month (with the lowest average low temperature) is January (-0.1°C).
Average pressure in September
Flawinne, Belgium
- 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 (1013mbar).
Average wind speed in September
Flawinne, Belgium
- Average wind speed in September: 11.7km/h
The windiest month (with the highest average wind speed) is December (18.2km/h).
The calmest month (with the lowest average wind speed) is August (11.3km/h).
Average humidity in September
Flawinne, Belgium
- Average humidity in September: 80%
The months with the highest relative humidity are January and December (89%).
The month with the lowest relative humidity is August (77%).
Average rainfall in September
Flawinne, Belgium
- Average rainfall in September: 35mm
The wettest month (with the highest rainfall) is December (56mm).
The driest month (with the least rainfall) is April (28mm).
Average rainfall days in September
Flawinne, Belgium
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is February (12 days).
Average snowfall in September
Flawinne, Belgium
- Average snowfall in September: 0mm
The month with the highest snowfall is January (40mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Flawinne, Belgium
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.5 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
Flawinne, Belgium
- 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 6min).
- Average sunshine in September: 7h and 2min
The months with the most sunshine are July and August (Average sunshine: 8h and 54min).
The month with the least sunshine is December (Average sunshine: 3h and 18min).
Average sunshine days in September
Flawinne, Belgium
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is October (15.3 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in September
Flawinne, Belgium
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Flawinne, Belgium
- Average cloud cover in September: 44
The month with the most cloud cover is December (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 43).
Average visibility in September
Flawinne, Belgium
- Average visibility in September: 8km
The months with the highest visibility are February, March, April, May, June, July, August and October (9km).
The months with the lowest visibility are January, September, November and December (8km).
Flawinne, Belgium
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