September weather forecastSletten, Denmark
September
Weather in September
September, the first month of the autumn in Sletten, is still a refreshing month, with an average temperature fluctuating between 17°C (62.6°F) and 12.5°C (54.5°F).Temperature
The start of September comes with a small reduction in the average high-temperature, subtly receding from an agreeable 20.3°C (68.5°F) in August to an enjoyable 17°C (62.6°F). September nights in Sletten, Denmark, register a minor temperature decline, steadying at a cool 12.5°C (54.5°F).Humidity
The average relative humidity in September in Sletten is 78%.Rainfall
In September, in Sletten, the rain falls for 14.4 days. Throughout September, 34mm (1.34") of precipitation is accumulated. Throughout the year, there are 167.1 rainfall days, and 386mm (15.2") of precipitation is accumulated.Snowfall
June through October are months without snowfall.Daylight
The average length of the day in September in Sletten is 12h and 44min.On the first day of the month, sunrise is at 06:15 and sunset at 20:04. On the last day of September, sunrise is at 07:11 and sunset at 18:47 CEST.
Sunshine
The average sunshine in September in Sletten is 7.4h.UV index
In Sletten, Denmark, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index of 4 during September translates into these guidelines:
Adopt protective measures - Suggestions to resist sunburn are offered. To avoid the Sun's strongest rays, limit exposure around the mid-day period. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sletten, Denmark
- Average high temperature in September: 17°C
The warmest month (with the highest average high temperature) is July (20.7°C).
The month with the lowest average high temperature is January (2.4°C).
- Average low temperature in September: 12.5°C
The month with the highest average low temperature is August (15°C).
The coldest month (with the lowest average low temperature) is February (-0.4°C).
Average pressure in September
Sletten, Denmark
- Average pressure in September: 1015.1mbar
The month with the highest atmospheric pressure is April (1015.5mbar).
The month with the lowest atmospheric pressure is December (1010.7mbar).
Average wind speed in September
Sletten, Denmark
- Average wind speed in September: 16.7km/h
The windiest month (with the highest average wind speed) is December (20.1km/h).
The calmest month (with the lowest average wind speed) is July (14.5km/h).
Average humidity in September
Sletten, Denmark
- Average humidity in September: 78%
The months with the highest relative humidity are January and December (87%).
The months with the lowest relative humidity are April and May (73%).
Average rainfall in September
Sletten, Denmark
- Average rainfall in September: 34mm
The wettest month (with the highest rainfall) is August (52mm).
The driest month (with the least rainfall) is April (16mm).
Average rainfall days in September
Sletten, Denmark
- Average rainfall days in September: 14.4 days
The month with the highest number of rainy days is August (18.3 days).
The month with the least rainy days is February (8.7 days).
Average snowfall in September
Sletten, Denmark
- Average snowfall in September: 0mm
The month with the highest snowfall is February (49mm).
The months with the least snowfall are June, July, August, September and October (0mm).
Average snowfall days in September
Sletten, Denmark
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (8.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sletten, Denmark
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 17h and 30min).
The month with the shortest days is December (Average daylight: 7h and 6min).
- Average sunshine in September: 7h and 24min
The month with the most sunshine is June (Average sunshine: 9h and 18min).
The month with the least sunshine is December (Average sunshine: 2h and 54min).
Average sunshine days in September
Sletten, Denmark
- Average sunshine days in September: 12.2 days
The month with the most sunshine days is April (14.9 days).
The month with the least sunshine days is December (8.6 days).
Average UV index in September
Sletten, Denmark
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Sletten, Denmark
- Average cloud cover in September: 49
The month with the most cloud cover is December (Cloud cover 71).
The months with the least cloud cover are June and August (Cloud cover 41).
Average visibility in September
Sletten, Denmark
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March, October, November and December (9km).
