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 sea temperature 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
September
Weather in September
Temperature
September brings a marginal elevation to a still enjoyable 17.1°C (62.8°F) from August's 18.8°C (65.8°F) in West-Terschelling's average high-temperatures. Consistently, West-Terschelling reports average nighttime temperatures of 14.8°C (58.6°F) during September, a marginal step down from its daytime highs.Humidity
With an average relative humidity of 77%, September is the least humid month.Rainfall
In September, the rain falls for 18.6 days. Throughout September, 67mm (2.64") of precipitation is accumulated. Throughout the year, there are 212.4 rainfall days, and 647mm (25.47") of precipitation is accumulated.Snowfall
In West-Terschelling, snow does not fall in May through November.Sea temperature
August and September, with an average sea temperature of 17.7°C (63.9°F), are months with the warmest seawater.Note: The majority of individuals find swimming in 17.7°C (63.9°F) to be unenjoyable. The difficulty in controlling breathing rises as the temperature decreases from 21°C (69.8°F) to 15°C (59°F).
Daylight
In West-Terschelling, the average length of the day in September is 12h and 41min.On the first day of the month, sunrise is at 06:49 and sunset at 20:28. On the last day of September, sunrise is at 07:39 and sunset at 19:17 CEST.
Sunshine
In September, the average sunshine is 7.1h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The maximum UV index of 4 during September leads to these instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the least humid month?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What months are the sea warmest?
How cold is the water in September?
How many hours of daylight does West-Terschelling have in September?
When are sunrise and sunset in September?
How many hours of sunshine does West-Terschelling have in September?
What is the UV index reading in September?
Average temperature in September
West-Terschelling, Netherlands
- Average high temperature in September: 17.1°C
The warmest month (with the highest average high temperature) is August (18.8°C).
The month with the lowest average high temperature is February (5.3°C).
- Average low temperature in September: 14.8°C
The month with the highest average low temperature is August (16.2°C).
The coldest month (with the lowest average low temperature) is February (3.3°C).
Average pressure in September
West-Terschelling, Netherlands
- Average pressure in September: 1016mbar
The month with the highest atmospheric pressure is May (1016.4mbar).
The month with the lowest atmospheric pressure is November (1010.3mbar).
Average wind speed in September
West-Terschelling, Netherlands
- Average wind speed in September: 25.4km/h
The windiest month (with the highest average wind speed) is December (34.7km/h).
The calmest months (with the lowest average wind speed) are June and July (21.8km/h).
Average humidity in September
West-Terschelling, Netherlands
- Average humidity in September: 77%
The months with the highest relative humidity are January, February, March, June and December (82%).
The month with the lowest relative humidity is September (77%).
Average rainfall in September
West-Terschelling, Netherlands
- Average rainfall in September: 67mm
The wettest month (with the highest rainfall) is August (78mm).
The driest month (with the least rainfall) is April (21mm).
Average rainfall days in September
West-Terschelling, Netherlands
- Average rainfall days in September: 18.6 days
The month with the highest number of rainy days is August (20.9 days).
The month with the least rainy days is April (12.8 days).
Average snowfall in September
West-Terschelling, Netherlands
- Average snowfall in September: 0mm
The month with the highest snowfall is February (21mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).
Average snowfall days in September
West-Terschelling, Netherlands
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
West-Terschelling, Netherlands
- Average sea temperature in September: 17.7°C
The best months for swimming (with the highest average sea temperature) are August and September (17.7°C).
The coldest month (with the lowest average sea temperature) is March (5.8°C).
Average daylight in September /
Average sunshine in September
West-Terschelling, Netherlands
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in September: 7h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in September
West-Terschelling, Netherlands
- Average sunshine days in September: 8.6 days
The month with the most sunshine days is April (14.5 days).
The month with the least sunshine days is November (6 days).
Average UV index in September
West-Terschelling, Netherlands
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
West-Terschelling, Netherlands
- Average cloud cover in September: 47
The month with the most cloud cover is December (Cloud cover 66).
The month with the least cloud cover is April (Cloud cover 39).
Average visibility in September
West-Terschelling, Netherlands
- Average visibility in September: 10km
The months with the highest visibility are March, April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January, February and December (9km).
