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
September
Weather in September
Temperature
In the transition to September, Herdersem observes a minor drop in the average high-temperature, shifting from a warm 23.2°C (73.8°F) in August to an enjoyable 19.8°C (67.6°F). An average low-temperature of 11.2°C (52.2°F) marks the nights in Herdersem throughout September.Humidity
The average relative humidity in September in Herdersem is 78%.Rainfall
In Herdersem, in September, during 9.8 rainfall days, 21mm (0.83") of precipitation is typically accumulated. In Herdersem, during the entire year, the rain falls for 169.4 days and collects up to 421mm (16.57") of precipitation.Snowfall
In Herdersem, snow does not fall in April through October.Daylight
In September, the average length of the day in Herdersem is 12h and 38min.On the first day of the month, sunrise is at 06:58 and sunset at 20:29. On the last day of September, in Herdersem, Belgium, sunrise is at 07:43 and sunset at 19:23 CEST.
Sunshine
In September, the average sunshine in Herdersem, Belgium, is 7.2h.UV index
In Herdersem, 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 the average person.Note: A maximum UV index of 4 in September translates into the following recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Herdersem?
What is the average humidity in September in Herdersem?
How much does it rain in Herdersem in September?
When it does not snow in Herdersem?
What is the average length of the day in September in Herdersem?
When is the sunrise / sunset in September in Herdersem?
How many hours of sunshine does Herdersem have in September?
What is the UV index reading in September in Herdersem?
Average temperature in September
Herdersem, Belgium
- Average high temperature in September: 19.8°C
The warmest month (with the highest average high temperature) is July (23.3°C).
The month with the lowest average high temperature is January (5.5°C).
- Average low temperature in September: 11.2°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (1.3°C).
Average pressure in September
Herdersem, 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 (1012.2mbar).
Average wind speed in September
Herdersem, Belgium
- Average wind speed in September: 12.1km/h
The windiest month (with the highest average wind speed) is December (17.3km/h).
The calmest month (with the lowest average wind speed) is August (11.7km/h).
Average humidity in September
Herdersem, Belgium
- Average humidity in September: 78%
The month with the highest relative humidity is December (88%).
The months with the lowest relative humidity are April, July and August (75%).
Average rainfall in September
Herdersem, Belgium
- Average rainfall in September: 21mm
The wettest month (with the highest rainfall) is December (59mm).
The driest month (with the least rainfall) is April (18mm).
Average rainfall days in September
Herdersem, Belgium
- Average rainfall days in September: 9.8 days
The month with the highest number of rainy days is December (17.9 days).
The month with the least rainy days is September (9.8 days).
Average snowfall in September
Herdersem, Belgium
- Average snowfall in September: 0mm
The month with the highest snowfall is January (36mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Herdersem, Belgium
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.4 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
Herdersem, 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 6min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in September
Herdersem, Belgium
- Average sunshine days in September: 18.7 days
The month with the most sunshine days is September (18.7 days).
The month with the least sunshine days is February (8.8 days).
Average UV index in September
Herdersem, 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
Herdersem, Belgium
- Average cloud cover in September: 45
The month with the most cloud cover is December (Cloud cover 64).
The month with the least cloud cover is April (Cloud cover 43).
Average visibility in September
Herdersem, 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).
