September weather forecastChâtelet, Belgium
September
Weather in September
September, the first month of the autumn in Châtelet, is still a comfortable month, with temperature in the range of an average high of 18.8°C (65.8°F) and an average low of 10.2°C (50.4°F).Temperature
September's arrival subtly correlates with a reduction in the average high-temperature, down from a pleasant 22.4°C (72.3°F) in August to an enjoyable 18.8°C (65.8°F). Nighttime temperature in Châtelet, Belgium, experiences an average drop to a cool 10.2°C (50.4°F) in September.Humidity
In Châtelet, the average relative humidity in September is 80%.Rainfall
The month with the least rainfall is September, when the rain falls for 13.3 days and typically collects 28mm (1.1") of precipitation.Snowfall
April through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 37min.On the first day of the month, sunrise is at 06:57 and sunset at 20:26. On the last day of September, sunrise is at 07:41 and sunset at 19:22 CEST.
Sunshine
In September, the average sunshine is 7.4h.UV index
In Châtelet, Belgium, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Châtelet, Belgium
- Average high temperature in September: 18.8°C
The warmest month (with the highest average high temperature) is August (22.4°C).
The month with the lowest average high temperature is January (4.6°C).
- Average low temperature in September: 10.2°C
The month with the highest average low temperature is August (13.3°C).
The coldest month (with the lowest average low temperature) is January (0.6°C).
Average pressure in September
Châtelet, 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 (1012.8mbar).
Average wind speed in September
Châtelet, Belgium
- Average wind speed in September: 12km/h
The windiest month (with the highest average wind speed) is December (18.7km/h).
The calmest month (with the lowest average wind speed) is August (11.6km/h).
Average humidity in September
Châtelet, Belgium
- Average humidity in September: 80%
The month with the highest relative humidity is December (89%).
The month with the lowest relative humidity is August (76%).
Average rainfall in September
Châtelet, Belgium
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is December (60mm).
The driest month (with the least rainfall) is September (28mm).
Average rainfall days in September
Châtelet, Belgium
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is August (17.8 days).
The month with the least rainy days is February (12.1 days).
Average snowfall in September
Châtelet, 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 and September (0mm).
Average snowfall days in September
Châtelet, Belgium
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.3 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
Châtelet, 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 month with the most sunshine is July (Average sunshine: 8h and 48min).
The months with the least sunshine are January and December (Average sunshine: 3h and 30min).
Average sunshine days in September
Châtelet, Belgium
- Average sunshine days in September: 14.2 days
The months with the most sunshine days are March and September (14.2 days).
The month with the least sunshine days is August (10.4 days).
Average UV index in September
Châtelet, 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
Châtelet, Belgium
- Average cloud cover in September: 45
The months with the most cloud cover are January and December (Cloud cover 65).
The months with the least cloud cover are April and August (Cloud cover 44).
Average visibility in September
Châtelet, 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).
