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
Entering September, the average high-temperature is recorded at a still enjoyable 17.7°C (63.9°F), exhibiting a minimal shift from August's 19.9°C (67.8°F). Night temperatures during September experience a slight downturn, averaging a mild 14.5°C (58.1°F).Humidity
In Aerdenhout, the average relative humidity in September is 77%.Rainfall
In Aerdenhout, in September, during 15.2 rainfall days, 36mm (1.42") of precipitation is typically accumulated. Throughout the year, in Aerdenhout, there are 169.2 rainfall days, and 339mm (13.35") of precipitation is accumulated.Snowfall
April through November are months without snowfall.Daylight
In Aerdenhout, the average length of the day in September is 12h and 40min.On the first day of the month, sunrise is at 06:53 and sunset at 20:29. On the last day of September, sunrise is at 07:41 and sunset at 19:20 CEST.
Sunshine
The average sunshine in September in Aerdenhout is 7h.UV index
In September, the average daily maximum UV index in Aerdenhout is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Frequently asked questions
What is the temperature in September in Aerdenhout?
What is the average humidity in September in Aerdenhout?
How much does it rain in Aerdenhout in September?
When it does not snow in Aerdenhout?
What is the average length of the day in September in Aerdenhout?
What time are sunrise and sunset in September in Aerdenhout?
How long on average sun shines in September in Aerdenhout?
What is the UV index reading in September in Aerdenhout?
Average temperature in September
Aerdenhout, Netherlands
- Average high temperature in September: 17.7°C
The warmest month (with the highest average high temperature) is August (19.9°C).
The months with the lowest average high temperature are January and February (5.8°C).
- Average low temperature in September: 14.5°C
The month with the highest average low temperature is August (16.6°C).
The coldest month (with the lowest average low temperature) is February (3.3°C).
Average pressure in September
Aerdenhout, Netherlands
- Average pressure in September: 1016.6mbar
The month with the highest atmospheric pressure is September (1016.6mbar).
The month with the lowest atmospheric pressure is November (1010.9mbar).
Average wind speed in September
Aerdenhout, Netherlands
- Average wind speed in September: 20.3km/h
The windiest month (with the highest average wind speed) is December (28.4km/h).
The calmest month (with the lowest average wind speed) is July (18km/h).
Average humidity in September
Aerdenhout, Netherlands
- Average humidity in September: 77%
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is August (76%).
Average rainfall in September
Aerdenhout, Netherlands
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is August (48mm).
The driest month (with the least rainfall) is April (11mm).
Average rainfall days in September
Aerdenhout, Netherlands
- Average rainfall days in September: 15.2 days
The month with the highest number of rainy days is August (17.2 days).
The month with the least rainy days is April (10.6 days).
Average snowfall in September
Aerdenhout, Netherlands
- Average snowfall in September: 0mm
The month with the highest snowfall is February (9mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Aerdenhout, Netherlands
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.7 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
Aerdenhout, 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 0min
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 24min).
Average sunshine days in September
Aerdenhout, Netherlands
- Average sunshine days in September: 11.4 days
The month with the most sunshine days is April (17.7 days).
The month with the least sunshine days is December (9.1 days).
Average UV index in September
Aerdenhout, 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
Aerdenhout, Netherlands
- Average cloud cover in September: 46
The month with the most cloud cover is December (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in September
Aerdenhout, Netherlands
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and November (10km).
The month with the lowest visibility is December (9km).
Aerdenhout, Netherlands
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