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
Watervliet records an average high-temperature of a comfortable 19°C (66.2°F) as September arrives, nearly mirroring the previous month's climate. Watervliet's temperature in September lowers to a consistent average of 12.8°C (55°F) during the nights.Humidity
In Watervliet, the average relative humidity in September is 77%.Rainfall
In September, the rain falls for 8.8 days. Throughout September, 12mm (0.47") of precipitation is accumulated. In Watervliet, during the entire year, the rain falls for 131.1 days and collects up to 188mm (7.4") of precipitation.Snowfall
In Watervliet, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 38min.On the first day of the month, sunrise is at 06:59 and sunset at 20:31. On the last day of September, sunrise is at 07:45 and sunset at 19:25 CEST.
Sunshine
In Watervliet, the average sunshine in September is 7.4h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 4 during September translates into the following recommendations:
Put precautions into practice - Protective measures against sun-induced damage are advised. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Frequently asked questions
What is the average September temperature in Watervliet?
What is the average humidity in September in Watervliet?
How many days does it rain in September in Watervliet?
When it does not snow in Watervliet?
How many hours of daylight does Watervliet have in September?
When is the sunrise / sunset in September in Watervliet?
How many hours of sunshine does Watervliet have in September?
What is the UV index reading in September in Watervliet?
Average temperature in September
Watervliet, Belgium
- Average high temperature in September: 19°C
The warmest month (with the highest average high temperature) is August (21.9°C).
The month with the lowest average high temperature is January (5.8°C).
- Average low temperature in September: 12.8°C
The month with the highest average low temperature is August (15.1°C).
The coldest month (with the lowest average low temperature) is February (2.4°C).
Average pressure in September
Watervliet, Belgium
- Average pressure in September: 1017.2mbar
The month with the highest atmospheric pressure is September (1017.2mbar).
The month with the lowest atmospheric pressure is November (1011.8mbar).
Average wind speed in September
Watervliet, Belgium
- Average wind speed in September: 14.7km/h
The windiest month (with the highest average wind speed) is December (20.2km/h).
The calmest month (with the lowest average wind speed) is July (13.8km/h).
Average humidity in September
Watervliet, Belgium
- Average humidity in September: 77%
The months with the highest relative humidity are January and December (85%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Watervliet, Belgium
- Average rainfall in September: 12mm
The wettest months (with the highest rainfall) are July and December (20mm).
The driest month (with the least rainfall) is April (10mm).
Average rainfall days in September
Watervliet, Belgium
- Average rainfall days in September: 8.8 days
The months with the highest number of rainy days are July and December (12.4 days).
The month with the least rainy days is September (8.8 days).
Average snowfall in September
Watervliet, Belgium
- Average snowfall in September: 0mm
The month with the highest snowfall is January (12mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Watervliet, Belgium
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.6 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
Watervliet, Belgium
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in September
Watervliet, Belgium
- Average sunshine days in September: 17.4 days
The month with the most sunshine days is April (17.8 days).
The month with the least sunshine days is June (14.2 days).
Average UV index in September
Watervliet, 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
Watervliet, Belgium
- Average cloud cover in September: 41
The month with the most cloud cover is December (Cloud cover 63).
The months with the least cloud cover are April and August (Cloud cover 38).
Average visibility in September
Watervliet, Belgium
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, November and December (9km).
Watervliet, Belgium
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