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
Sart-lez-Walhain's progression into September involves a minor drop in the average high-temperature, slightly receding from a pleasant 22.8°C (73°F) in August to a comfortable 19.3°C (66.7°F). Throughout September, the average low-temperature records at a fresh 10.5°C (50.9°F).Humidity
In Sart-lez-Walhain, Belgium, the average relative humidity in September is 79%.Rainfall
In Sart-lez-Walhain, during September, the rain falls for 14 days and regularly aggregates up to 34mm (1.34") of precipitation. Throughout the year, in Sart-lez-Walhain, there are 187 rainfall days, and 488mm (19.21") of precipitation is accumulated.Snowfall
In Sart-lez-Walhain, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 37min.On the first day of September in Sart-lez-Walhain, sunrise is at 06:56 and sunset at 20:25. On the last day of the month, sunrise is at 07:40 and sunset at 19:21 CEST.
Sunshine
In Sart-lez-Walhain, Belgium, the average sunshine in September is 7.6h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 4 during September translates into the following recommendations:
Take necessary precautions - Defending against sun damage is advocated. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Sart-lez-Walhain?
What is the average humidity in September in Sart-lez-Walhain?
How many days does it rain in September in Sart-lez-Walhain?
When it does not snow in Sart-lez-Walhain?
What is the average length of the day in September in Sart-lez-Walhain?
What time are sunrise and sunset in September in Sart-lez-Walhain?
How long on average sun shines in September in Sart-lez-Walhain?
How high is the UV index in September in Sart-lez-Walhain?
Average temperature in September
Sart-lez-Walhain, Belgium
- Average high temperature in September: 19.3°C
The warmest month (with the highest average high temperature) is July (22.9°C).
The month with the lowest average high temperature is January (4.8°C).
- Average low temperature in September: 10.5°C
The month with the highest average low temperature is August (13.7°C).
The coldest months (with the lowest average low temperature) are January and February (0.8°C).
Average pressure in September
Sart-lez-Walhain, 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 (1012.7mbar).
Average wind speed in September
Sart-lez-Walhain, Belgium
- Average wind speed in September: 12km/h
The windiest month (with the highest average wind speed) is December (18.3km/h).
The calmest month (with the lowest average wind speed) is August (11.6km/h).
Average humidity in September
Sart-lez-Walhain, Belgium
- Average humidity in September: 79%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is August (75%).
Average rainfall in September
Sart-lez-Walhain, Belgium
- Average rainfall in September: 34mm
The wettest month (with the highest rainfall) is August (53mm).
The driest month (with the least rainfall) is April (26mm).
Average rainfall days in September
Sart-lez-Walhain, Belgium
- Average rainfall days in September: 14 days
The month with the highest number of rainy days is August (18.6 days).
The month with the least rainy days is February (12.8 days).
Average snowfall in September
Sart-lez-Walhain, Belgium
- Average snowfall in September: 0mm
The month with the highest snowfall is February (42mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Sart-lez-Walhain, Belgium
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sart-lez-Walhain, 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 6min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in September
Sart-lez-Walhain, Belgium
- Average sunshine days in September: 13.3 days
The month with the most sunshine days is October (13.5 days).
The month with the least sunshine days is August (9.8 days).
Average UV index in September
Sart-lez-Walhain, 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
Sart-lez-Walhain, Belgium
- Average cloud cover in September: 42
The month with the most cloud cover is December (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 41).
Average visibility in September
Sart-lez-Walhain, 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).
Sart-lez-Walhain, Belgium
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