September weather forecastSømna, Norway
September
Weather in September
The first month of the autumn, September, is still a cool month in Sømna, Norway, with an average temperature varying between 12°C (53.6°F) and 9.4°C (48.9°F).Temperature
As August turns into September, the average high-temperatures rest at a cool 12°C (53.6°F), showing a minor variation from the prior month. Sømna's average low temperature, barely cooler than the daytime high, steadies at a chilly 9.4°C (48.9°F) during September.Humidity
The average relative humidity in September is 78%.Rainfall
In Sømna, in September, during 18.8 rainfall days, 99mm (3.9") of precipitation is typically accumulated. Throughout the year, in Sømna, Norway, there are 179.7 rainfall days, and 982mm (38.66") of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 13h and 4min.On the first day of September in Sømna, sunrise is at 05:51 and sunset at 20:31. On the last day of the month, sunrise is at 07:20 and sunset at 18:42 CEST.
Sunshine
In Sømna, the average sunshine in September is 6.3h.UV index
The average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.Note: A maximum high daily UV index of 2 during September translates into the following directions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sømna, Norway
- Average high temperature in September: 12°C
The warmest months (with the highest average high temperature) are July and August (14.7°C).
The month with the lowest average high temperature is February (0.1°C).
- Average low temperature in September: 9.4°C
The month with the highest average low temperature is August (11.1°C).
The coldest month (with the lowest average low temperature) is February (-3°C).
Average pressure in September
Sømna, Norway
- Average pressure in September: 1009.9mbar
The month with the highest atmospheric pressure is May (1014.3mbar).
The month with the lowest atmospheric pressure is December (1002.3mbar).
Average wind speed in September
Sømna, Norway
- Average wind speed in September: 17.6km/h
The windiest month (with the highest average wind speed) is January (24.3km/h).
The calmest month (with the lowest average wind speed) is July (13.5km/h).
Average humidity in September
Sømna, Norway
- Average humidity in September: 78%
The months with the highest relative humidity are February and April (81%).
The month with the lowest relative humidity is October (76%).
Average rainfall in September
Sømna, Norway
- Average rainfall in September: 99mm
The wettest month (with the highest rainfall) is December (120mm).
The driest month (with the least rainfall) is June (47mm).
Average rainfall days in September
Sømna, Norway
- Average rainfall days in September: 18.8 days
The month with the highest number of rainy days is October (19.2 days).
The month with the least rainy days is February (9.8 days).
Average snowfall in September
Sømna, Norway
- Average snowfall in September: 0mm
The month with the highest snowfall is March (169mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Sømna, Norway
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is March (13.3 days).
The months with the least snowfall days are July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sømna, Norway
- Average daylight in September: 13h and 6min
The month with the longest days is June (Average daylight: 21h and 54min).
The month with the shortest days is December (Average daylight: 3h and 42min).
- Average sunshine in September: 6h and 18min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 1h and 30min).
Average sunshine days in September
Sømna, Norway
- Average sunshine days in September: 9.8 days
The month with the most sunshine days is July (13.3 days).
The month with the least sunshine days is March (8.5 days).
Average UV index in September
Sømna, Norway
- Average UV index in September: 2
The months with the highest UV index are June and July (UV index 4).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Sømna, Norway
- Average cloud cover in September: 57
The month with the most cloud cover is March (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 51).
Average visibility in September
Sømna, 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).
