September weather forecastFlorennes, Belgium
September
Weather in September
September, the first month of the autumn in Florennes, is still a comfortable month, with an average temperature fluctuating between 18.7°C (65.7°F) and 9.8°C (49.6°F).Temperature
The commencement of September includes a gentle temperature shift, with the average high-temperature dropping a bit from a pleasant 21.8°C (71.2°F) in August to an enjoyable 18.7°C (65.7°F). Florennes, in September, experiences an average temperature of 9.8°C (49.6°F) at night.Humidity
In Florennes, the average relative humidity in September is 81%.Rainfall
In September, the rain falls for 13.8 days. Throughout September, 40mm (1.57") of precipitation is accumulated. In Florennes, during the entire year, the rain falls for 188.7 days and collects up to 575mm (22.64") of precipitation.Snowfall
May through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 37min.On the first day of September, sunrise is at 06:57 and sunset at 20:25. On the last day of the month, sunrise is at 07:41 and sunset at 19:21 CEST.
Sunshine
In September, the average sunshine is 7.5h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum UV index of 4 in September translates into the following recommendations:
Exercise prevention - Precautions against solar damage are endorsed. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Florennes, Belgium
- Average high temperature in September: 18.7°C
The warmest month (with the highest average high temperature) is July (21.9°C).
The month with the lowest average high temperature is January (3.9°C).
- Average low temperature in September: 9.8°C
The month with the highest average low temperature is August (12.4°C).
The coldest month (with the lowest average low temperature) is January (-0.2°C).
Average pressure in September
Florennes, 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 (1013.1mbar).
Average wind speed in September
Florennes, Belgium
- Average wind speed in September: 11.1km/h
The windiest month (with the highest average wind speed) is December (17.4km/h).
The calmest month (with the lowest average wind speed) is August (10.6km/h).
Average humidity in September
Florennes, Belgium
- Average humidity in September: 81%
The month with the highest relative humidity is December (91%).
The months with the lowest relative humidity are April and August (79%).
Average rainfall in September
Florennes, Belgium
- Average rainfall in September: 40mm
The wettest month (with the highest rainfall) is December (71mm).
The driest month (with the least rainfall) is April (31mm).
Average rainfall days in September
Florennes, Belgium
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is July (18.9 days).
The month with the least rainy days is February (12.4 days).
Average snowfall in September
Florennes, Belgium
- Average snowfall in September: 0mm
The month with the highest snowfall is January (68mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Florennes, Belgium
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Florennes, Belgium
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in September: 7h and 30min
The month with the most sunshine is July (Average sunshine: 8h and 54min).
The months with the least sunshine are January and December (Average sunshine: 3h and 24min).
Average sunshine days in September
Florennes, Belgium
- Average sunshine days in September: 12.8 days
The months with the most sunshine days are April and October (13.4 days).
The month with the least sunshine days is December (9.4 days).
Average UV index in September
Florennes, 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, March, November and December (UV index 2).
Average cloud cover in September
Florennes, Belgium
- Average cloud cover in September: 44
The month with the most cloud cover is December (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 43).
Average visibility in September
Florennes, Belgium
- Average visibility in September: 8km
The months with the highest visibility are March, April and August (9km).
The months with the lowest visibility are January, February, May, June, July, September, October, November and December (8km).
