September weather forecastFlénu, Belgium
September
Weather in September
The first month of the autumn, September, is also an enjoyable month in Flénu, Belgium, with an average temperature fluctuating between 19.4°C (66.9°F) and 10.4°C (50.7°F).Temperature
The start of September signals a gentle decrease in the average high-temperature, transitioning from a pleasant 22.7°C (72.9°F) in August to a comfortable 19.4°C (66.9°F). The temperature lowers to an average of 10.4°C (50.7°F) during September nights.Humidity
The average relative humidity in September in Flénu, Belgium, is 80%.Rainfall
September is the month with the least rainfall. Rain falls for 12.9 days and accumulates 26mm (1.02") of precipitation.Snowfall
In Flénu, Belgium, snow does not fall in April through September.Daylight
In September, the average length of the day in Flénu, Belgium, is 12h and 37min.On the first day of the month, sunrise is at 06:59 and sunset at 20:28. On the last day of September, in Flénu, sunrise is at 07:43 and sunset at 19:24 CEST.
Sunshine
In September, the average sunshine is 7.4h.UV index
In Flénu, the average daily maximum UV index in September 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 average individuals.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Undertake protective steps - Recommendations to avoid sunburn are issued. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Flénu, Belgium
- Average high temperature in September: 19.4°C
The warmest months (with the highest average high temperature) are July and August (22.7°C).
The month with the lowest average high temperature is January (5°C).
- Average low temperature in September: 10.4°C
The months with the highest average low temperature are July and August (12.9°C).
The coldest month (with the lowest average low temperature) is January (0.7°C).
Average pressure in September
Flénu, Belgium
- Average pressure in September: 1017.6mbar
The month with the highest atmospheric pressure is September (1017.6mbar).
The month with the lowest atmospheric pressure is November (1012.6mbar).
Average wind speed in September
Flénu, Belgium
- Average wind speed in September: 12.3km/h
The windiest month (with the highest average wind speed) is December (18.8km/h).
The calmest month (with the lowest average wind speed) is August (11.9km/h).
Average humidity in September
Flénu, Belgium
- Average humidity in September: 80%
The month with the highest relative humidity is December (89%).
The months with the lowest relative humidity are July and August (77%).
Average rainfall in September
Flénu, Belgium
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is December (60mm).
The driest month (with the least rainfall) is September (26mm).
Average rainfall days in September
Flénu, Belgium
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is March (12.8 days).
Average snowfall in September
Flénu, Belgium
- Average snowfall in September: 0mm
The month with the highest snowfall is January (31mm).
The months with the least snowfall are April, May, June, July, August and September (0mm).
Average snowfall days in September
Flénu, Belgium
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Flénu, Belgium
- 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 6min).
- Average sunshine in September: 7h and 24min
The months with the most sunshine are July and August (Average sunshine: 8h and 48min).
The months with the least sunshine are January and December (Average sunshine: 3h and 42min).
Average sunshine days in September
Flénu, Belgium
- Average sunshine days in September: 14.6 days
The month with the most sunshine days is October (15.7 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in September
Flénu, Belgium
- 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
Flénu, Belgium
- Average cloud cover in September: 44
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are April and August (Cloud cover 43).
Average visibility in September
Flénu, Belgium
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (9km).
The month with the lowest visibility is September (8km).
