September weather forecastLiernu, Belgium
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Liernu, Belgium, with temperature in the range of an average low of 9.8°C (49.6°F) and an average high of 18.8°C (65.8°F).Temperature
Liernu's weather in September involves a mild decrease in the average high-temperature, moving down slightly from August's pleasant 22.5°C (72.5°F) to a comfortable 18.8°C (65.8°F). In September, Liernu records an average nighttime temperature of 9.8°C (49.6°F).Humidity
In Liernu, the average relative humidity in September is 80%.Rainfall
In Liernu, during September, the rain falls for 12.9 days and regularly aggregates up to 35mm (1.38") of precipitation. Throughout the year, in Liernu, there are 179.6 rainfall days, and 508mm (20") of precipitation is accumulated.Snowfall
In Liernu, Belgium, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 37min.On the first day of September in Liernu, Belgium, sunrise is at 06:55 and sunset at 20:25. On the last day of the month, sunrise is at 07:40 and sunset at 19:20 CEST.
Sunshine
In Liernu, the average sunshine in September is 7.4h.UV index
In Liernu, 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 rays for the ordinary person.Note: A maximum daily UV index of 4 during September morphs into the following directions:
Guard yourself - Precautionary measures against sun damage are advocated. Avoiding the Sun during its peak radiation time around midday is a healthy practice. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Liernu, Belgium
- Average high temperature in September: 18.8°C
The warmest month (with the highest average high temperature) is August (22.5°C).
The month with the lowest average high temperature is January (4.3°C).
- Average low temperature in September: 9.8°C
The month with the highest average low temperature is August (12.8°C).
The coldest month (with the lowest average low temperature) is January (-0.1°C).
Average pressure in September
Liernu, 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 (1013mbar).
Average wind speed in September
Liernu, Belgium
- Average wind speed in September: 11.7km/h
The windiest month (with the highest average wind speed) is December (18.2km/h).
The calmest month (with the lowest average wind speed) is August (11.3km/h).
Average humidity in September
Liernu, Belgium
- Average humidity in September: 80%
The months with the highest relative humidity are January and December (89%).
The month with the lowest relative humidity is August (77%).
Average rainfall in September
Liernu, Belgium
- Average rainfall in September: 35mm
The wettest month (with the highest rainfall) is December (56mm).
The driest month (with the least rainfall) is April (28mm).
Average rainfall days in September
Liernu, Belgium
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is February (12 days).
Average snowfall in September
Liernu, Belgium
- Average snowfall in September: 0mm
The month with the highest snowfall is January (40mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Liernu, Belgium
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.5 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
Liernu, Belgium
- Average daylight in September: 12h and 36min
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 24min
The months with the most sunshine are July and August (Average sunshine: 8h and 54min).
The month with the least sunshine is December (Average sunshine: 3h and 18min).
Average sunshine days in September
Liernu, Belgium
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is October (15.3 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in September
Liernu, Belgium
- Average UV index in September: 4
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
Liernu, Belgium
- Average cloud cover in September: 44
The month with the most cloud cover is December (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 43).
Average visibility in September
Liernu, Belgium
- Average visibility in September: 8km
The months with the highest visibility are February, March, April, May, June, July, August and October (9km).
The months with the lowest visibility are January, September, November and December (8km).
