September weather forecastDonnes, Norway
September
Weather in September
September, the first month of the autumn in Donnes, is still a cool month, with an average temperature fluctuating between 12.3°C (54.1°F) and 10.2°C (50.4°F).Temperature
September's advent presents an average high-temperature of a fresh 12.3°C (54.1°F), indicating a slight variation from the conditions of the previous month. Donnes, during September nights, witnesses an average temperature marginally cooler than its daytime highs, at a still cool 10.2°C (50.4°F).Humidity
The average relative humidity in September is 76%.Rainfall
In September, the rain falls for 19.6 days. Throughout September, 106mm (4.17") of precipitation is accumulated. In Donnes, during the entire year, the rain falls for 181.5 days and collects up to 957mm (37.68") of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Donnes is 13h and 7min.On the first day of September in Donnes, sunrise is at 05:46 and sunset at 20:32. On the last day of the month, sunrise is at 07:19 and sunset at 18:39 CEST.
Sunshine
In September, the average sunshine in Donnes is 6.3h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: In September, an average UV index of 3 transforms into the following instructions:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Donnes, Norway
- Average high temperature in September: 12.3°C
The warmest month (with the highest average high temperature) is August (14.3°C).
The month with the lowest average high temperature is February (1.7°C).
- Average low temperature in September: 10.2°C
The month with the highest average low temperature is August (11.8°C).
The coldest month (with the lowest average low temperature) is February (-0.8°C).
Average pressure in September
Donnes, Norway
- Average pressure in September: 1009.2mbar
The month with the highest atmospheric pressure is May (1014.2mbar).
The month with the lowest atmospheric pressure is December (1001.6mbar).
Average wind speed in September
Donnes, Norway
- Average wind speed in September: 22.1km/h
The windiest month (with the highest average wind speed) is January (30.3km/h).
The calmest month (with the lowest average wind speed) is July (17.7km/h).
Average humidity in September
Donnes, Norway
- Average humidity in September: 76%
The month with the highest relative humidity is July (81%).
The months with the lowest relative humidity are October and December (72%).
Average rainfall in September
Donnes, Norway
- Average rainfall in September: 106mm
The wettest month (with the highest rainfall) is October (108mm).
The driest month (with the least rainfall) is June (44mm).
Average rainfall days in September
Donnes, Norway
- Average rainfall days in September: 19.6 days
The month with the highest number of rainy days is September (19.6 days).
The month with the least rainy days is February (8.7 days).
Average snowfall in September
Donnes, Norway
- Average snowfall in September: 0mm
The month with the highest snowfall is March (126mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Donnes, Norway
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is March (10.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Donnes, Norway
- Average daylight in September: 13h and 6min
The month with the longest days is July (Average daylight: 19h and 36min).
The month with the shortest days is December (Average daylight: 3h and 0min).
- Average sunshine in September: 6h and 18min
The month with the most sunshine is May (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 1h and 30min).
Average sunshine days in September
Donnes, Norway
- Average sunshine days in September: 8.8 days
The month with the most sunshine days is June (13.3 days).
The month with the least sunshine days is September (8.8 days).
Average UV index in September
Donnes, Norway
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in September
Donnes, Norway
- Average cloud cover in September: 57
The month with the most cloud cover is March (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 49).
Average visibility in September
Donnes, Norway
- Average visibility in September: 9km
The months with the highest visibility are June and August (10km).
The months with the lowest visibility are January, February, March, April, May, July, September, October, November and December (9km).
