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
September
Weather in September
Temperature
As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from a pleasant 21.3°C (70.3°F) to a comfortable 18.2°C (64.8°F). September nights in Ter Aar witness a mild cool down to an average low of 13.2°C (55.8°F).Humidity
In September, the average relative humidity is 78%.Rainfall
In Ter Aar, in September, during 14.5 rainfall days, 39mm (1.54") of precipitation is typically accumulated. Throughout the year, there are 193.3 rainfall days, and 526mm (20.71") of precipitation is accumulated.Snowfall
April through October are months without snowfall in Ter Aar.Daylight
The average length of the day in September in Ter Aar is 12h and 39min.On the first day of September, sunrise is at 06:53 and sunset at 20:28. On the last day of the month, sunrise is at 07:41 and sunset at 19:20 CEST.
Sunshine
The average sunshine in September is 7.2h.UV index
In Ter Aar, Netherlands, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 4 in September translates into this advice:
Take precautions - Protection against sun damage is advised. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Ter Aar?
What is the average humidity in September in Ter Aar?
How many days does it rain in September in Ter Aar?
When it does not snow in Ter Aar?
What is the average length of the day in September in Ter Aar?
When is the sunrise / sunset in September in Ter Aar?
How long on average sun shines in September in Ter Aar?
What is the UV index intensity in September in Ter Aar?
Average temperature in September
Ter Aar, Netherlands
- Average high temperature in September: 18.2°C
The warmest month (with the highest average high temperature) is August (21.3°C).
The month with the lowest average high temperature is January (5.6°C).
- Average low temperature in September: 13.2°C
The month with the highest average low temperature is August (15.3°C).
The coldest months (with the lowest average low temperature) are January and February (2.6°C).
Average pressure in September
Ter Aar, Netherlands
- Average pressure in September: 1016.7mbar
The month with the highest atmospheric pressure is September (1016.7mbar).
The month with the lowest atmospheric pressure is November (1011.2mbar).
Average wind speed in September
Ter Aar, Netherlands
- Average wind speed in September: 15.3km/h
The windiest month (with the highest average wind speed) is December (22.2km/h).
The calmest month (with the lowest average wind speed) is July (14.4km/h).
Average humidity in September
Ter Aar, Netherlands
- Average humidity in September: 78%
The months with the highest relative humidity are January and December (84%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Ter Aar, Netherlands
- Average rainfall in September: 39mm
The wettest month (with the highest rainfall) is December (65mm).
The driest month (with the least rainfall) is April (22mm).
Average rainfall days in September
Ter Aar, Netherlands
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is December (20.5 days).
The month with the least rainy days is October (13 days).
Average snowfall in September
Ter Aar, Netherlands
- Average snowfall in September: 0mm
The month with the highest snowfall is February (28mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Ter Aar, Netherlands
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.6 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
Ter Aar, Netherlands
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 42min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in September: 7h and 1min
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
Ter Aar, Netherlands
- Average sunshine days in September: 13.1 days
The month with the most sunshine days is October (15.5 days).
The month with the least sunshine days is December (6.1 days).
Average UV index in September
Ter Aar, 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
Ter Aar, Netherlands
- 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 38).
Average visibility in September
Ter Aar, Netherlands
- 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).
