September weather forecastSem, Norway
September
Weather in September
The first month of the autumn, September, is still a mild month in Sem, Norway, with an average temperature ranging between min 10.8°C (51.4°F) and max 15.3°C (59.5°F).Temperature
In Sem, the average high-temperature in September slightly decreases from a refreshing 18.4°C (65.1°F) in August to a moderate 15.3°C (59.5°F). Sem's September nights witness minimal differential from the daytime temperatures, with averages of 10.8°C (51.4°F).Humidity
In September, the average relative humidity in Sem is 77%.Rainfall
In September, in Sem, Norway, the rain falls for 11.1 days. Throughout September, 55mm (2.17") of precipitation is accumulated. In Sem, during the entire year, the rain falls for 130.2 days and collects up to 549mm (21.61") of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September is 12h and 50min.On the first day of the month, sunrise is at 06:16 and sunset at 20:20. On the last day of September, sunrise is at 07:22 and sunset at 18:54 CEST.
Sunshine
In September, the average sunshine in Sem is 8.3h.UV index
In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: During September, 3 as the daily maximum UV index converts into the following advice:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. To protect against the Sun's most potent rays, avoid direct exposure around midday. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sem, Norway
- Average high temperature in September: 15.3°C
The warmest month (with the highest average high temperature) is July (19.1°C).
The month with the lowest average high temperature is February (0.3°C).
- Average low temperature in September: 10.8°C
The month with the highest average low temperature is July (13.7°C).
The coldest month (with the lowest average low temperature) is February (-3°C).
Average pressure in September
Sem, Norway
- Average pressure in September: 1012.8mbar
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
Sem, Norway
- Average wind speed in September: 16.7km/h
The windiest months (with the highest average wind speed) are November and December (19.7km/h).
The calmest month (with the lowest average wind speed) is July (13.9km/h).
Average humidity in September
Sem, Norway
- Average humidity in September: 77%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April and May (72%).
Average rainfall in September
Sem, Norway
- Average rainfall in September: 55mm
The wettest month (with the highest rainfall) is November (65mm).
The driest month (with the least rainfall) is April (23mm).
Average rainfall days in September
Sem, Norway
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is July (15.2 days).
The month with the least rainy days is February (5.9 days).
Average snowfall in September
Sem, Norway
- Average snowfall in September: 0mm
The month with the highest snowfall is January (111mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Sem, Norway
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sem, Norway
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 18min).
- Average sunshine in September: 8h and 18min
The month with the most sunshine is June (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in September
Sem, Norway
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is April (19.9 days).
The months with the least sunshine days are June and July (13.4 days).
Average UV index in September
Sem, 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, October, November and December (UV index 2).
Average cloud cover in September
Sem, Norway
- Average cloud cover in September: 41
The month with the most cloud cover is February (Cloud cover 59).
The months with the least cloud cover are June, July and August (Cloud cover 36).
Average visibility in September
Sem, Norway
- 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).
