September weather forecastWesterland, Netherlands
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Westerland, Netherlands, with an average temperature varying between 15.1°C (59.2°F) and 17.2°C (63°F).Temperature
September's onset sees an average high-temperature of a still enjoyable 17.2°C (63°F), exhibiting a slight fluctuation from the previous month. Westerland reports an average low temperature of 15.1°C (59.2°F) in September, a minor decrease from the day's highs.Humidity
With an average relative humidity of 77%, September is the least humid month.Rainfall
In Westerland, Netherlands, in September, it is raining for 16.9 days, with typically 41mm (1.61") of accumulated precipitation. Throughout the year, there are 186.7 rainfall days, and 391mm (15.39") of precipitation is accumulated.Snowfall
In Westerland, Netherlands, snow does not fall in April through October.Daylight
In Westerland, Netherlands, the average length of the day in September is 12h and 40min.On the first day of the month, sunrise is at 06:51 and sunset at 20:28. On the last day of September, in Westerland, sunrise is at 07:40 and sunset at 19:19 CEST.
Sunshine
In September, the average sunshine in Westerland is 6.8h.UV index
The average daily maximum UV index in September in Westerland is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: In September, an average UV index of 4 transforms into the following instructions:
Act with care - The need to guard against sun damage is communicated. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Westerland, Netherlands
- Average high temperature in September: 17.2°C
The warmest month (with the highest average high temperature) is August (18.9°C).
The month with the lowest average high temperature is February (5.7°C).
- Average low temperature in September: 15.1°C
The month with the highest average low temperature is August (16.4°C).
The coldest month (with the lowest average low temperature) is February (3.5°C).
Average pressure in September
Westerland, Netherlands
- Average pressure in September: 1016.2mbar
The month with the highest atmospheric pressure is May (1016.5mbar).
The month with the lowest atmospheric pressure is November (1010.5mbar).
Average wind speed in September
Westerland, Netherlands
- Average wind speed in September: 24.6km/h
The windiest month (with the highest average wind speed) is December (33.9km/h).
The calmest month (with the lowest average wind speed) is July (21.3km/h).
Average humidity in September
Westerland, Netherlands
- Average humidity in September: 77%
The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is September (77%).
Average rainfall in September
Westerland, Netherlands
- Average rainfall in September: 41mm
The wettest month (with the highest rainfall) is October (49mm).
The driest month (with the least rainfall) is April (13mm).
Average rainfall days in September
Westerland, Netherlands
- Average rainfall days in September: 16.9 days
The month with the highest number of rainy days is December (19.7 days).
The month with the least rainy days is April (10.8 days).
Average snowfall in September
Westerland, Netherlands
- Average snowfall in September: 0mm
The month with the highest snowfall is January (9mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Westerland, Netherlands
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Westerland, Netherlands
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 16h and 48min).
The month with the shortest days is December (Average daylight: 7h and 42min).
- Average sunshine in September: 6h and 48min
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 24min).
Average sunshine days in September
Westerland, Netherlands
- Average sunshine days in September: 9.2 days
The month with the most sunshine days is May (16.6 days).
The month with the least sunshine days is November (6.5 days).
Average UV index in September
Westerland, 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, November and December (UV index 2).
Average cloud cover in September
Westerland, Netherlands
- Average cloud cover in September: 47
The month with the most cloud cover is December (Cloud cover 67).
The months with the least cloud cover are April and August (Cloud cover 40).
Average visibility in September
Westerland, 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).
