September weather forecastDe Lier, Netherlands
September
Weather in September
September, the first month of the autumn in De Lier, is still a refreshing month, with an average temperature fluctuating between 17.9°C (64.2°F) and 14.5°C (58.1°F).Temperature
The onset of September marks an average high-temperature of a comfortable 17.9°C (64.2°F), hardly differing from August's 20.2°C (68.4°F). Maintaining close parity with daytime warmth, the average nocturnal temperature during September stays at a still refreshing 14.5°C (58.1°F).Humidity
April, August and September, with an average relative humidity of 76%, are the least humid months in De Lier, Netherlands.Rainfall
In De Lier, in September, during 15.5 rainfall days, 37mm (1.46") of precipitation is typically accumulated. Throughout the year, there are 172 rainfall days, and 384mm (15.12") of precipitation is accumulated.Snowfall
In De Lier, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 39min.On the first day of the month, sunrise is at 06:55 and sunset at 20:29. On the last day of September, sunrise is at 07:43 and sunset at 19:22 CEST.
Sunshine
In September, the average sunshine is 7.1h.UV index
In De Lier, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: In September, the maximum UV index of 4 suggests this advice:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
De Lier, Netherlands
- Average high temperature in September: 17.9°C
The warmest month (with the highest average high temperature) is August (20.2°C).
The month with the lowest average high temperature is February (5.8°C).
- Average low temperature in September: 14.5°C
The month with the highest average low temperature is August (16.7°C).
The coldest month (with the lowest average low temperature) is February (3.5°C).
Average pressure in September
De Lier, Netherlands
- Average pressure in September: 1016.9mbar
The month with the highest atmospheric pressure is September (1016.9mbar).
The month with the lowest atmospheric pressure is November (1011.3mbar).
Average wind speed in September
De Lier, Netherlands
- Average wind speed in September: 20.3km/h
The windiest month (with the highest average wind speed) is December (28.2km/h).
The calmest month (with the lowest average wind speed) is July (18.1km/h).
Average humidity in September
De Lier, Netherlands
- Average humidity in September: 76%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are April, August and September (76%).
Average rainfall in September
De Lier, Netherlands
- Average rainfall in September: 37mm
The wettest month (with the highest rainfall) is August (55mm).
The driest month (with the least rainfall) is April (12mm).
Average rainfall days in September
De Lier, Netherlands
- Average rainfall days in September: 15.5 days
The month with the highest number of rainy days is August (17.8 days).
The month with the least rainy days is April (9.5 days).
Average snowfall in September
De Lier, Netherlands
- Average snowfall in September: 0mm
The month with the highest snowfall is February (16mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
De Lier, Netherlands
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.9 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
De Lier, Netherlands
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in September: 7h and 6min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in September
De Lier, Netherlands
- Average sunshine days in September: 11.1 days
The month with the most sunshine days is April (18.4 days).
The month with the least sunshine days is December (8.4 days).
Average UV index in September
De Lier, Netherlands
- 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 and December (UV index 2).
Average cloud cover in September
De Lier, Netherlands
- Average cloud cover in September: 44
The month with the most cloud cover is December (Cloud cover 66).
The months with the least cloud cover are April and August (Cloud cover 39).
Average visibility in September
De Lier, Netherlands
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
