September weather forecastAalter, Belgium
September
Weather in September
September, the first month of the autumn in Aalter, is also an enjoyable month, with an average temperature fluctuating between 11.7°C (53.1°F) and 19.6°C (67.3°F).Temperature
September ushers in a minor alteration in Aalter's climate, with the average high-temperature moving from August's moderately hot 23°C (73.4°F) to a refreshing 19.6°C (67.3°F). Throughout the month of September, Aalter witnesses an average low-temperature of 11.7°C (53.1°F).Humidity
The average relative humidity in September is 78%.Rainfall
The month with the least rainfall in Aalter, Belgium, is September, when the rain falls for 10.1 days and typically collects 13mm (0.51") of precipitation.Snowfall
In Aalter, Belgium, snow does not fall in April through November.Daylight
The average length of the day in September is 12h and 38min.On the first day of September in Aalter, sunrise is at 07:00 and sunset at 20:31. On the last day of the month, sunrise is at 07:45 and sunset at 19:26 CEST.
Sunshine
In Aalter, the average sunshine in September is 7.2h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Take precautions - Protection against skin and eye damage is obliged. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Aalter, Belgium
- Average high temperature in September: 19.6°C
The warmest month (with the highest average high temperature) is July (23.1°C).
The month with the lowest average high temperature is January (5.8°C).
- Average low temperature in September: 11.7°C
The month with the highest average low temperature is August (14.2°C).
The coldest months (with the lowest average low temperature) are January and February (1.7°C).
Average pressure in September
Aalter, 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 (1012mbar).
Average wind speed in September
Aalter, Belgium
- Average wind speed in September: 12.2km/h
The windiest month (with the highest average wind speed) is December (17.2km/h).
The calmest month (with the lowest average wind speed) is August (12km/h).
Average humidity in September
Aalter, Belgium
- Average humidity in September: 78%
The month with the highest relative humidity is December (87%).
The months with the lowest relative humidity are April, July and August (74%).
Average rainfall in September
Aalter, Belgium
- Average rainfall in September: 13mm
The wettest month (with the highest rainfall) is June (34mm).
The driest month (with the least rainfall) is September (13mm).
Average rainfall days in September
Aalter, Belgium
- Average rainfall days in September: 10.1 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is September (10.1 days).
Average snowfall in September
Aalter, Belgium
- Average snowfall in September: 0mm
The month with the highest snowfall is January (14mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Aalter, Belgium
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Aalter, 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 12min
The month with the most sunshine is June (Average sunshine: 9h and 30min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in September
Aalter, Belgium
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is October (17.3 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in September
Aalter, 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
Aalter, Belgium
- Average cloud cover in September: 44
The months with the most cloud cover are January and December (Cloud cover 63).
The months with the least cloud cover are April and August (Cloud cover 42).
Average visibility in September
Aalter, Belgium
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
