Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
With the arrival of September, Mullem experiences a modest decline in average high-temperatures, transitioning from a moderately hot 23.2°C (73.8°F) in August to an enjoyable 19.9°C (67.8°F). Throughout the September nights, Mullem encounters a low-temperature of 11.5°C (52.7°F).Humidity
In Mullem, the average relative humidity in September is 77%.Rainfall
In Mullem, Belgium, in September, it is raining for 13.7 days, with typically 34mm (1.34") of accumulated precipitation. In Mullem, Belgium, during the entire year, the rain falls for 183.1 days and collects up to 499mm (19.65") of precipitation.Snowfall
In Mullem, snow does not fall in April through October.Daylight
In Mullem, the average length of the day in September is 12h and 38min.On the first day of the month, sunrise is at 07:00 and sunset at 20:30. On the last day of September, in Mullem, Belgium, sunrise is at 07:45 and sunset at 19:25 CEST.
Sunshine
The average sunshine in September in Mullem is 7.2h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Exercise prevention - Warding off sunburn is urged. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Frequently asked questions
What is the temperature in September in Mullem?
What is the average humidity in September in Mullem?
How much does it rain in Mullem in September?
When it does not snow in Mullem?
What is the average length of the day in September in Mullem?
When is the sunrise / sunset in September in Mullem?
How many hours of sunshine does Mullem have in September?
What is the UV index reading in September in Mullem?
Average temperature in September
Mullem, Belgium
- Average high temperature in September: 19.9°C
The warmest months (with the highest average high temperature) are July and August (23.2°C).
The month with the lowest average high temperature is January (5.6°C).
- Average low temperature in September: 11.5°C
The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is January (1.3°C).
Average pressure in September
Mullem, Belgium
- Average pressure in September: 1017.3mbar
The month with the highest atmospheric pressure is September (1017.3mbar).
The month with the lowest atmospheric pressure is November (1012.1mbar).
Average wind speed in September
Mullem, Belgium
- Average wind speed in September: 12km/h
The windiest month (with the highest average wind speed) is December (16.9km/h).
The calmest month (with the lowest average wind speed) is August (11.6km/h).
Average humidity in September
Mullem, Belgium
- Average humidity in September: 77%
The month with the highest relative humidity is December (88%).
The months with the lowest relative humidity are April, July and August (74%).
Average rainfall in September
Mullem, Belgium
- Average rainfall in September: 34mm
The wettest month (with the highest rainfall) is December (55mm).
The driest month (with the least rainfall) is April (25mm).
Average rainfall days in September
Mullem, Belgium
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is August (17.7 days).
The month with the least rainy days is February (12.6 days).
Average snowfall in September
Mullem, Belgium
- Average snowfall in September: 0mm
The month with the highest snowfall is January (39mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Mullem, Belgium
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.8 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
Mullem, Belgium
- Average daylight in September: 12h and 4min
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 0min).
- Average sunshine in September: 7h and 1min
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 30min).
Average sunshine days in September
Mullem, Belgium
- Average sunshine days in September: 13.6 days
The month with the most sunshine days is April (14 days).
The month with the least sunshine days is November (10.5 days).
Average UV index in September
Mullem, 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
Mullem, Belgium
- Average cloud cover in September: 45
The months with the most cloud cover are January and December (Cloud cover 63).
The month with the least cloud cover is April (Cloud cover 42).
Average visibility in September
Mullem, Belgium
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January, November and December (8km).
Mullem, Belgium
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