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
The arrival of September is marked by a minor reduction in average high-temperature, sliding from an agreeable 22.8°C (73°F) in August to a comfortable 19.2°C (66.6°F). Throughout September in Ottignies, a steady low-temperature average of 10.5°C (50.9°F) is noted.Humidity
In September, the average relative humidity is 79%.Rainfall
In Ottignies, during September, the rain falls for 13.5 days and regularly aggregates up to 27mm (1.06") of precipitation. In Ottignies, during the entire year, the rain falls for 186.5 days and collects up to 481mm (18.94") of precipitation.Snowfall
In Ottignies, snow does not fall in April through October.Daylight
The average length of the day in September in Ottignies, Belgium, is 12h and 37min.On the first day of the month, sunrise is at 06:56 and sunset at 20:26. On the last day of September, sunrise is at 07:41 and sunset at 19:21 CEST.
Sunshine
In September, the average sunshine in Ottignies is 7.8h.UV index
In September, the average daily maximum UV index in Ottignies, Belgium, is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In September, the UV index of 4 transforms into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Frequently asked questions
What is the temperature in September in Ottignies?
What is the average humidity in September in Ottignies?
How many days does it rain in September in Ottignies?
When it does not snow in Ottignies?
What is the average length of the day in September in Ottignies?
What time are sunrise and sunset in September in Ottignies?
How many hours of sunshine does Ottignies have in September?
What is the UV index intensity in September in Ottignies?
Average temperature in September
Ottignies, Belgium
- Average high temperature in September: 19.2°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
Ottignies, Belgium
- Average pressure in September: 1017.5mbar
The month with the highest atmospheric pressure is September (1017.5mbar).
The month with the lowest atmospheric pressure is November (1012.7mbar).
Average wind speed in September
Ottignies, Belgium
- Average wind speed in September: 11.9km/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
Ottignies, 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
Ottignies, Belgium
- Average rainfall in September: 27mm
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
Ottignies, Belgium
- Average rainfall days in September: 13.5 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
Ottignies, 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
Ottignies, 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
Ottignies, 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 5min
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 48min).
Average sunshine days in September
Ottignies, Belgium
- Average sunshine days in September: 13.5 days
The months with the most sunshine days are September and October (13.5 days).
The month with the least sunshine days is August (9.8 days).
Average UV index in September
Ottignies, 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
Ottignies, 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
Ottignies, 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).
Ottignies, Belgium
Weather forecast for your location
2. Allow the app to use your location
