September weather forecastSommen, Sweden
September
Weather in September
September, the first month of the autumn in Sommen, is also a moderate month, with an average temperature ranging between min 9.2°C (48.6°F) and max 15.7°C (60.3°F).Temperature
The move into September indicates a slight reduction in the average high-temperature, down from August's pleasant 20.3°C (68.5°F) to a mild 15.7°C (60.3°F). An average low-temperature of 9.2°C (48.6°F) marks the nights throughout September.Humidity
In September, the average relative humidity in Sommen is 80%.Rainfall
In Sommen, in September, during 11.7 rainfall days, 25mm (0.98") of precipitation is typically accumulated. In Sommen, during the entire year, the rain falls for 139 days and collects up to 358mm (14.09") of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 48min.On the first day of the month, sunrise is at 06:00 and sunset at 19:57. On the last day of September, sunrise is at 07:02 and sunset at 18:35 CEST.
Sunshine
In September, the average sunshine is 7.6h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: The UV index of 3 during September translates into the following guidance:
Exercise prevention - Precautions against solar damage are endorsed. To avoid the Sun's strongest rays, limit exposure around the mid-day period. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sommen, Sweden
- Average high temperature in September: 15.7°C
The warmest month (with the highest average high temperature) is July (21.2°C).
The month with the lowest average high temperature is January (-0.4°C).
- Average low temperature in September: 9.2°C
The month with the highest average low temperature is July (12.3°C).
The coldest month (with the lowest average low temperature) is February (-3.5°C).
Average pressure in September
Sommen, Sweden
- Average pressure in September: 1014mbar
The month with the highest atmospheric pressure is May (1014.7mbar).
The month with the lowest atmospheric pressure is December (1008.9mbar).
Average wind speed in September
Sommen, Sweden
- Average wind speed in September: 14km/h
The windiest month (with the highest average wind speed) is December (15.6km/h).
The calmest months (with the lowest average wind speed) are May and July (12.2km/h).
Average humidity in September
Sommen, Sweden
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (70%).
Average rainfall in September
Sommen, Sweden
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is July (49mm).
The driest month (with the least rainfall) is April (14mm).
Average rainfall days in September
Sommen, Sweden
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is February (5.5 days).
Average snowfall in September
Sommen, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (115mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Sommen, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sommen, Sweden
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 6min).
The month with the shortest days is December (Average daylight: 6h and 36min).
- Average sunshine in September: 7h and 36min
The month with the most sunshine is June (Average sunshine: 11h and 30min).
The months with the least sunshine are February and December (Average sunshine: 3h and 6min).
Average sunshine days in September
Sommen, Sweden
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is May (15.2 days).
The month with the least sunshine days is February (11.3 days).
Average UV index in September
Sommen, Sweden
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Sommen, Sweden
- Average cloud cover in September: 49
The months with the most cloud cover are January, February and December (Cloud cover 69).
The month with the least cloud cover is June (Cloud cover 42).
Average visibility in September
Sommen, Sweden
- Average visibility in September: 9km
The months with the highest visibility are April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January, February, March, November and December (8km).
