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
With the onset of September, La Roche-en-Ardenne's average high-temperature slightly adjusts, moderately receding from August's agreeable 20.6°C (69.1°F) to a comfortable 17°C (62.6°F). In the month of September, the average low-temperature usually rests at a frosty 8.2°C (46.8°F).Humidity
In La Roche-en-Ardenne, the average relative humidity in September is 85%.Rainfall
In September, in La Roche-en-Ardenne, the rain falls for 13.2 days. Throughout September, 40mm (1.57") of precipitation is accumulated. Throughout the year, in La Roche-en-Ardenne, there are 173 rainfall days, and 654mm (25.75") of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in La Roche-en-Ardenne, Belgium, is 12h and 37min.On the first day of September in La Roche-en-Ardenne, sunrise is at 06:53 and sunset at 20:21. On the last day of the month, sunrise is at 07:37 and sunset at 19:17 CEST.
Sunshine
In La Roche-en-Ardenne, Belgium, the average sunshine in September is 7.1h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: An average maximum UV index of 3 in September leads to these recommendations:
Undertake precautions - Guarding against sun damage is counselled. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Frequently asked questions
What are the temperatures in La Roche-en-Ardenne in September?
What is the average humidity in September in La Roche-en-Ardenne?
How many days does it rain in September in La Roche-en-Ardenne?
When it does not snow in La Roche-en-Ardenne?
Does it snow in La Roche-en-Ardenne in September?
How many hours of daylight does La Roche-en-Ardenne have in September?
When is the sunrise / sunset in September in La Roche-en-Ardenne?
How many hours of sunshine does La Roche-en-Ardenne have in September?
What is the UV index intensity in September in La Roche-en-Ardenne?
Average temperature in September
La Roche-en-Ardenne, Belgium
- Average high temperature in September: 17°C
The warmest month (with the highest average high temperature) is July (20.7°C).
The month with the lowest average high temperature is January (2.7°C).
- Average low temperature in September: 8.2°C
The month with the highest average low temperature is July (11.3°C).
The coldest month (with the lowest average low temperature) is January (-1.6°C).
Average pressure in September
La Roche-en-Ardenne, Belgium
- Average pressure in September: 1017.7mbar
The month with the highest atmospheric pressure is September (1017.7mbar).
The month with the lowest atmospheric pressure is November (1013.5mbar).
Average wind speed in September
La Roche-en-Ardenne, Belgium
- Average wind speed in September: 10.8km/h
The windiest month (with the highest average wind speed) is February (16.8km/h).
The calmest month (with the lowest average wind speed) is August (10.3km/h).
Average humidity in September
La Roche-en-Ardenne, Belgium
- Average humidity in September: 85%
The month with the highest relative humidity is December (93%).
The month with the lowest relative humidity is April (80%).
Average rainfall in September
La Roche-en-Ardenne, Belgium
- Average rainfall in September: 40mm
The wettest month (with the highest rainfall) is December (87mm).
The driest month (with the least rainfall) is April (35mm).
Average rainfall days in September
La Roche-en-Ardenne, Belgium
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is August (17.7 days).
The month with the least rainy days is February (8.9 days).
Average snowfall in September
La Roche-en-Ardenne, Belgium
- Average snowfall in September: 0mm
The month with the highest snowfall is January (146mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
La Roche-en-Ardenne, Belgium
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
La Roche-en-Ardenne, Belgium
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in September: 7h and 1min
The month with the most sunshine is July (Average sunshine: 8h and 30min).
The month with the least sunshine is December (Average sunshine: 2h and 30min).
Average sunshine days in September
La Roche-en-Ardenne, Belgium
- Average sunshine days in September: 14.1 days
The month with the most sunshine days is September (14.1 days).
The month with the least sunshine days is December (8.3 days).
Average UV index in September
La Roche-en-Ardenne, Belgium
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in September
La Roche-en-Ardenne, Belgium
- Average cloud cover in September: 49
The month with the most cloud cover is December (Cloud cover 76).
The month with the least cloud cover is August (Cloud cover 47).
Average visibility in September
La Roche-en-Ardenne, Belgium
- Average visibility in September: 7km
The months with the highest visibility are February, March, April, May, June, July and August (8km).
The months with the lowest visibility are January, September, October, November and December (7km).
La Roche-en-Ardenne, Belgium
Weather forecast for your location
2. Allow the app to use your location
