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
The shift from August to September coincides with a small decrease in the average high-temperature, down to a refreshing 19.5°C (67.1°F) from a warm 23.3°C (73.9°F). Throughout September, the nighttime temperature averages to a cool 11.1°C (52°F).Humidity
In September, the average relative humidity is 78%.Rainfall
In Lummen, in September, during 12.9 rainfall days, 30mm (1.18") of precipitation is typically accumulated. In Lummen, Belgium, during the entire year, the rain falls for 173.1 days and collects up to 472mm (18.58") of precipitation.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 38min.On the first day of September, sunrise is at 06:53 and sunset at 20:24. On the last day of the month, sunrise is at 07:38 and sunset at 19:19 CEST.
Sunshine
The average sunshine in September in Lummen is 7.6h.UV index
The average daily maximum UV index in September in Lummen is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 4 during September translates into these guidelines:
Act with care - The need to guard against sun damage is communicated. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Frequently asked questions
What is the average September temperature in Lummen?
What is the average humidity in September in Lummen?
How much does it rain in Lummen in September?
When it does not snow in Lummen?
What is the average length of the day in September in Lummen?
When are sunrise and sunset in September in Lummen?
How long on average sun shines in September in Lummen?
What is the UV index intensity in September in Lummen?
Average temperature in September
Lummen, Belgium
- Average high temperature in September: 19.5°C
The warmest month (with the highest average high temperature) is July (23.4°C).
The month with the lowest average high temperature is January (5°C).
- Average low temperature in September: 11.1°C
The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is January (1.2°C).
Average pressure in September
Lummen, 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 (1012.6mbar).
Average wind speed in September
Lummen, Belgium
- Average wind speed in September: 11.5km/h
The windiest month (with the highest average wind speed) is December (17.6km/h).
The calmest month (with the lowest average wind speed) is August (11.2km/h).
Average humidity in September
Lummen, Belgium
- Average humidity in September: 78%
The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Lummen, Belgium
- Average rainfall in September: 30mm
The wettest month (with the highest rainfall) is August (53mm).
The driest month (with the least rainfall) is April (20mm).
Average rainfall days in September
Lummen, Belgium
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is August (18.6 days).
The month with the least rainy days is April (11.3 days).
Average snowfall in September
Lummen, Belgium
- Average snowfall in September: 0mm
The month with the highest snowfall is February (34mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Lummen, Belgium
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.7 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
Lummen, Belgium
- Average daylight in September: 12h and 4min
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 4min
The month with the most sunshine is July (Average sunshine: 9h and 6min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in September
Lummen, Belgium
- Average sunshine days in September: 14.7 days
The months with the most sunshine days are March and April (16.6 days).
The months with the least sunshine days are June and July (9.8 days).
Average UV index in September
Lummen, 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
Lummen, Belgium
- Average cloud cover in September: 43
The month with the most cloud cover is December (Cloud cover 63).
The months with the least cloud cover are April and August (Cloud cover 41).
Average visibility in September
Lummen, 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).
Lummen, Belgium
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