September weather forecastAs, Belgium
September
Weather in September
September, the first month of the autumn in As, is still a refreshing month, with an average temperature ranging between min 11°C (51.8°F) and max 19°C (66.2°F).Temperature
The advent of September brings a slight shift in average high-temperature, moving from a moderately hot 23.2°C (73.8°F) in August to a refreshing 19°C (66.2°F). As observes an average low-temperature of 11°C (51.8°F) during September.Humidity
In September, the average relative humidity is 79%.Rainfall
In As, during September, the rain falls for 13.1 days and regularly aggregates up to 29mm (1.14") of precipitation. In As, Belgium, during the entire year, the rain falls for 191.3 days and collects up to 534mm (21.02") of precipitation.Snowfall
In As, Belgium, snow does not fall in April through October.Daylight
The average length of the day in September in As is 12h and 38min.On the first day of the month, sunrise is at 06:52 and sunset at 20:23. On the last day of September, sunrise is at 07:37 and sunset at 19:17 CEST.
Sunshine
The average sunshine in September is 7.7h.UV index
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: During September, 4 as the daily maximum UV index converts into the following advice:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
As, Belgium
- Average high temperature in September: 19°C
The warmest month (with the highest average high temperature) is July (23.3°C).
The month with the lowest average high temperature is January (4.9°C).
- Average low temperature in September: 11°C
The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is January (0.9°C).
Average pressure in September
As, 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 (1012.8mbar).
Average wind speed in September
As, Belgium
- Average wind speed in September: 11.1km/h
The windiest month (with the highest average wind speed) is December (17.3km/h).
The calmest month (with the lowest average wind speed) is August (10.8km/h).
Average humidity in September
As, Belgium
- Average humidity in September: 79%
The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
As, Belgium
- Average rainfall in September: 29mm
The wettest month (with the highest rainfall) is December (59mm).
The driest month (with the least rainfall) is April (24mm).
Average rainfall days in September
As, Belgium
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is September (13.1 days).
Average snowfall in September
As, Belgium
- Average snowfall in September: 0mm
The month with the highest snowfall is January (44mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
As, Belgium
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.7 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
As, 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 42min
The months with the most sunshine are July and August (Average sunshine: 9h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in September
As, Belgium
- Average sunshine days in September: 13.3 days
The month with the most sunshine days is October (13.8 days).
The month with the least sunshine days is June (8.9 days).
Average UV index in September
As, 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
As, Belgium
- Average cloud cover in September: 43
The month with the most cloud cover is December (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 41).
Average visibility in September
As, Belgium
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and November (9km).
The month with the lowest visibility is December (8km).
