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 September, the average high-temperature marginally drops from an agreeable 20.7°C (69.3°F) in August to an enjoyable 17.2°C (63°F). September's nights in Aywaille observe an average temperature of 8.7°C (47.7°F).Humidity
The average relative humidity in September is 84%.Rainfall
In Aywaille, in September, during 12.8 rainfall days, 41mm (1.61") of precipitation is typically accumulated. In Aywaille, during the entire year, the rain falls for 169.9 days and collects up to 593mm (23.35") of precipitation.Snowfall
In Aywaille, Belgium, snow does not fall in June through September.Daylight
In Aywaille, Belgium, the average length of the day in September is 12h and 37min.On the first day of September, sunrise is at 06:52 and sunset at 20:21. On the last day of the month, sunrise is at 07:36 and sunset at 19:17 CEST.
Sunshine
In Aywaille, the average sunshine in September is 7.2h.UV index
In Aywaille, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 3 in September translates into this advice:
Ensure safety - Recommendations to avert sunburn are presented. The solar radiation around mid-day is intense; avoid the Sun and stay safe. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Frequently asked questions
What are September temperatures in Aywaille?
What is the average humidity in September in Aywaille?
How much does it rain in Aywaille in September?
When it does not snow in Aywaille?
Does it snow in Aywaille in September?
What is the average length of the day in September in Aywaille?
What time are sunrise and sunset in September in Aywaille?
How long on average sun shines in September in Aywaille?
What is the UV index reading in September in Aywaille?
Average temperature in September
Aywaille, Belgium
- Average high temperature in September: 17.2°C
The warmest months (with the highest average high temperature) are July and August (20.7°C).
The month with the lowest average high temperature is January (2.8°C).
- Average low temperature in September: 8.7°C
The months with the highest average low temperature are July and August (11.5°C).
The coldest month (with the lowest average low temperature) is February (-1.5°C).
Average pressure in September
Aywaille, Belgium
- Average pressure in September: 1017.6mbar
The month with the highest atmospheric pressure is September (1017.6mbar).
The month with the lowest atmospheric pressure is November (1013.4mbar).
Average wind speed in September
Aywaille, Belgium
- Average wind speed in September: 10.6km/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 (10.3km/h).
Average humidity in September
Aywaille, Belgium
- Average humidity in September: 84%
The months with the highest relative humidity are January and December (91%).
The month with the lowest relative humidity is April (80%).
Average rainfall in September
Aywaille, Belgium
- Average rainfall in September: 41mm
The wettest month (with the highest rainfall) is December (68mm).
The driest month (with the least rainfall) is April (29mm).
Average rainfall days in September
Aywaille, Belgium
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is August (17.8 days).
The month with the least rainy days is February (8.9 days).
Average snowfall in September
Aywaille, Belgium
- Average snowfall in September: 0mm
The month with the highest snowfall is February (137mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Aywaille, Belgium
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Aywaille, 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 1min
The months with the most sunshine are July and August (Average sunshine: 8h and 30min).
The month with the least sunshine is December (Average sunshine: 2h and 48min).
Average sunshine days in September
Aywaille, Belgium
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is September (15.1 days).
The month with the least sunshine days is December (10.1 days).
Average UV index in September
Aywaille, Belgium
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Aywaille, Belgium
- Average cloud cover in September: 48
The month with the most cloud cover is December (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 46).
Average visibility in September
Aywaille, Belgium
- Average visibility in September: 8km
The month with the highest visibility is April (9km).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (8km).
Aywaille, Belgium
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