September weather forecastHerpelmont, France
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Herpelmont, France, with an average temperature fluctuating between 18.8°C (65.8°F) and 9.4°C (48.9°F).Temperature
With the beginning of September, the average high-temperature shows a small decrease, transitioning from an agreeable 22.9°C (73.2°F) in August to a comfortable 18.8°C (65.8°F). Throughout the month of September, Herpelmont expects an average low of 9.4°C (48.9°F).Humidity
In September, the average relative humidity is 82%.Rainfall
The months with the least rainfall are April and September Rain falls for 12.1 days and accumulates 36mm (1.42") of rain.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Herpelmont is 12h and 35min.On the first day of September in Herpelmont, sunrise is at 06:51 and sunset at 20:14. On the last day of the month, sunrise is at 07:31 and sunset at 19:14 CEST.
Sunshine
In Herpelmont, the average sunshine in September is 8.3h.UV index
In Herpelmont, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 3 transforms into these recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Herpelmont, France
- Average high temperature in September: 18.8°C
The warmest month (with the highest average high temperature) is August (22.9°C).
The month with the lowest average high temperature is January (3.4°C).
- Average low temperature in September: 9.4°C
The months with the highest average low temperature are July and August (12.8°C).
The coldest month (with the lowest average low temperature) is January (-1.3°C).
Average pressure in September
Herpelmont, France
- Average pressure in September: 1018.4mbar
The month with the highest atmospheric pressure is December (1020mbar).
The month with the lowest atmospheric pressure is November (1015.1mbar).
Average wind speed in September
Herpelmont, France
- Average wind speed in September: 9.1km/h
The windiest month (with the highest average wind speed) is February (14km/h).
The calmest month (with the lowest average wind speed) is August (8.4km/h).
Average humidity in September
Herpelmont, France
- Average humidity in September: 82%
The months with the highest relative humidity are January and December (89%).
The months with the lowest relative humidity are April and August (79%).
Average rainfall in September
Herpelmont, France
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is December (84mm).
The driest months (with the least rainfall) are April and September (36mm).
Average rainfall days in September
Herpelmont, France
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is February (11.3 days).
Average snowfall in September
Herpelmont, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (92mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Herpelmont, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Herpelmont, France
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 8h and 18min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The months with the least sunshine are January and December (Average sunshine: 3h and 48min).
Average sunshine days in September
Herpelmont, France
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is October (15.8 days).
The month with the least sunshine days is June (9.2 days).
Average UV index in September
Herpelmont, France
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Herpelmont, France
- Average cloud cover in September: 38
The month with the most cloud cover is December (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Herpelmont, France
- Average visibility in September: 8km
The months with the highest visibility are February, March, April, July and August (9km).
The months with the lowest visibility are January, May, June, September, October, November and December (8km).
