September weather forecastKnapper, Norway
September
Weather in September
The first month of the autumn, September, is also a moderate month in Knapper, Norway, with temperature in the range of an average low of 6.7°C (44.1°F) and an average high of 14.3°C (57.7°F).Temperature
September brings a slight decrease in the average high-temperature, shifting from an enjoyable 18.3°C (64.9°F) in August to a moderate 14.3°C (57.7°F). Knapper's average low-temperature in September is measured at a chilly 6.7°C (44.1°F).Humidity
The average relative humidity in September in Knapper is 81%.Rainfall
In Knapper, in September, during 12.1 rainfall days, 30mm (1.18") of precipitation is typically accumulated. Throughout the year, there are 139.3 rainfall days, and 346mm (13.62") of precipitation is accumulated.Snowfall
In Knapper, snow does not fall in June through September.Daylight
In Knapper, Norway, the average length of the day in September is 12h and 53min.On the first day of the month, sunrise is at 06:08 and sunset at 20:18. On the last day of September, sunrise is at 07:18 and sunset at 18:48 CEST.
Sunshine
In Knapper, the average sunshine in September is 7.2h.UV index
In Knapper, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 3 suggests this advice:
Take precautions - Protection against sun damage is advised. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Knapper, Norway
- Average high temperature in September: 14.3°C
The warmest month (with the highest average high temperature) is July (20.1°C).
The month with the lowest average high temperature is January (-3.2°C).
- Average low temperature in September: 6.7°C
The month with the highest average low temperature is July (10.3°C).
The coldest month (with the lowest average low temperature) is February (-8.1°C).
Average pressure in September
Knapper, Norway
- Average pressure in September: 1012.5mbar
The month with the highest atmospheric pressure is April (1014.4mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed in September
Knapper, Norway
- Average wind speed in September: 9.1km/h
The windiest months (with the highest average wind speed) are May and September (9.1km/h).
The calmest month (with the lowest average wind speed) is August (8km/h).
Average humidity in September
Knapper, Norway
- Average humidity in September: 81%
The month with the highest relative humidity is February (93%).
The month with the lowest relative humidity is May (71%).
Average rainfall in September
Knapper, Norway
- Average rainfall in September: 30mm
The wettest month (with the highest rainfall) is July (51mm).
The driest month (with the least rainfall) is January (16mm).
Average rainfall days in September
Knapper, Norway
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is July (20.6 days).
The month with the least rainy days is February (3.9 days).
Average snowfall in September
Knapper, Norway
- Average snowfall in September: 0mm
The month with the highest snowfall is March (103mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Knapper, Norway
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (14.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Knapper, Norway
- Average daylight in September: 12h and 54min
The month with the longest days is June (Average daylight: 18h and 54min).
The month with the shortest days is December (Average daylight: 5h and 54min).
- Average sunshine in September: 7h and 12min
The month with the most sunshine is June (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 2h and 48min).
Average sunshine days in September
Knapper, Norway
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is October (16.2 days).
The month with the least sunshine days is July (8.2 days).
Average UV index in September
Knapper, Norway
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March and December (UV index 1).
Average cloud cover in September
Knapper, Norway
- Average cloud cover in September: 52
The month with the most cloud cover is February (Cloud cover 67).
The month with the least cloud cover is June (Cloud cover 48).
Average visibility in September
Knapper, Norway
- Average visibility in September: 8km
The months with the highest visibility are May and June (9km).
The month with the lowest visibility is February (5km).
