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
In the transition to September, Grammene observes a minor drop in the average high-temperature, shifting from a moderately hot 23.2°C (73.8°F) in August to a refreshing 19.9°C (67.8°F). During September, the average low-temperature in Grammene is a fresh 11.5°C (52.7°F).Humidity
The average relative humidity in September is 77%.Rainfall
In Grammene, Belgium, in September, during 13.7 rainfall days, 34mm (1.34") of precipitation is typically accumulated. In Grammene, during the entire year, the rain falls for 183.1 days and collects up to 499mm (19.65") 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 the month, sunrise is at 07:00 and sunset at 20:31. On the last day of September, in Grammene, Belgium, sunrise is at 07:45 and sunset at 19:26 CEST.
Sunshine
In September, the average sunshine in Grammene is 7.2h.UV index
In Grammene, Belgium, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: An average maximum UV index of 4 in September leads to these recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Frequently asked questions
What are the temperatures in Grammene in September?
What is the average humidity in September in Grammene?
How much does it rain in Grammene in September?
When it does not snow in Grammene?
How many hours of daylight does Grammene have in September?
What time are sunrise and sunset in September in Grammene?
How long on average sun shines in September in Grammene?
What is the UV index reading in September in Grammene?
Average temperature in September
Grammene, 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
Grammene, 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
Grammene, 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
Grammene, 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
Grammene, 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
Grammene, 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
Grammene, 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
Grammene, 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
Grammene, 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 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
Grammene, 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
Grammene, 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
Grammene, 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
Grammene, 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).
Grammene, Belgium
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