September weather forecastBollebeek, Belgium
September
Weather in September
September, the first month of the autumn in Bollebeek, is also an enjoyable month, with temperature in the range of an average high of 19.6°C (67.3°F) and an average low of 11.3°C (52.3°F).Temperature
As September arrives, Bollebeek's weather displays a minor decrease in high-temperatures, transitioning from August's moderately hot 23.1°C (73.6°F) to an enjoyable 19.6°C (67.3°F). Bollebeek experiences an average nighttime temperature of 11.3°C (52.3°F) in the month of September.Humidity
In September, the average relative humidity is 78%.Rainfall
In Bollebeek, in September, it is raining for 13.9 days, with typically 36mm (1.42") of accumulated precipitation. In Bollebeek, during the entire year, the rain falls for 199.3 days and collects up to 541mm (21.3") of precipitation.Snowfall
In Bollebeek, Belgium, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 38min.On the first day of September, sunrise is at 06:57 and sunset at 20:28. On the last day of the month, sunrise is at 07:42 and sunset at 19:22 CEST.
Sunshine
In Bollebeek, the average sunshine in September is 7.6h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 4 suggests this advice:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bollebeek, Belgium
- Average high temperature in September: 19.6°C
The warmest months (with the highest average high temperature) are July and August (23.1°C).
The month with the lowest average high temperature is January (5.1°C).
- Average low temperature in September: 11.3°C
The month with the highest average low temperature is August (13.9°C).
The coldest month (with the lowest average low temperature) is January (1.1°C).
Average pressure in September
Bollebeek, Belgium
- Average pressure in September: 1017.4mbar
The month with the highest atmospheric pressure is September (1017.4mbar).
The month with the lowest atmospheric pressure is November (1012.5mbar).
Average wind speed in September
Bollebeek, Belgium
- Average wind speed in September: 12.1km/h
The windiest month (with the highest average wind speed) is December (18km/h).
The calmest month (with the lowest average wind speed) is August (11.7km/h).
Average humidity in September
Bollebeek, Belgium
- Average humidity in September: 78%
The month with the highest relative humidity is December (88%).
The months with the lowest relative humidity are April, July and August (75%).
Average rainfall in September
Bollebeek, Belgium
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is December (60mm).
The driest month (with the least rainfall) is April (27mm).
Average rainfall days in September
Bollebeek, Belgium
- Average rainfall days in September: 13.9 days
The months with the highest number of rainy days are May and July (18.8 days).
The month with the least rainy days is February (13.7 days).
Average snowfall in September
Bollebeek, Belgium
- Average snowfall in September: 0mm
The month with the highest snowfall is February (47mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Bollebeek, Belgium
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.2 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
Bollebeek, Belgium
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in September: 7h and 36min
The month with the most sunshine is July (Average sunshine: 9h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in September
Bollebeek, Belgium
- Average sunshine days in September: 12 days
The month with the most sunshine days is March (12.5 days).
The month with the least sunshine days is June (8.3 days).
Average UV index in September
Bollebeek, 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
Bollebeek, Belgium
- Average cloud cover in September: 43
The months with the most cloud cover are January and December (Cloud cover 62).
The months with the least cloud cover are April and August (Cloud cover 42).
Average visibility in September
Bollebeek, Belgium
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (9km).
The month with the lowest visibility is January (8km).
