September weather forecastArnäsvall, Sweden
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Arnäsvall, Sweden, with an average temperature varying between 7.6°C (45.7°F) and 13.5°C (56.3°F).Temperature
September indicates a minor shift in the average high-temperature, from August's refreshing 18°C (64.4°F) to a mild 13.5°C (56.3°F). During September nights, Arnäsvall records an average temperature of 7.6°C (45.7°F).Humidity
The average relative humidity in September in Arnäsvall is 80%.Rainfall
In Arnäsvall, in September, during 12.5 rainfall days, 27mm (1.06") of precipitation is typically accumulated. Throughout the year, in Arnäsvall, there are 118.4 rainfall days, and 372mm (14.65") of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Arnäsvall, the average length of the day in September is 12h and 59min.On the first day of September in Arnäsvall, sunrise is at 05:31 and sunset at 19:57. On the last day of the month, sunrise is at 06:51 and sunset at 18:17 CEST.
Sunshine
In September, the average sunshine is 7.6h.UV index
In Arnäsvall, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, an average UV index of 3 transforms into the following instructions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Arnäsvall, Sweden
- Average high temperature in September: 13.5°C
The warmest month (with the highest average high temperature) is July (19.3°C).
The month with the lowest average high temperature is January (-3.5°C).
- Average low temperature in September: 7.6°C
The month with the highest average low temperature is July (11.7°C).
The coldest month (with the lowest average low temperature) is February (-7.5°C).
Average pressure in September
Arnäsvall, Sweden
- Average pressure in September: 1011.6mbar
The month with the highest atmospheric pressure is May (1014.2mbar).
The month with the lowest atmospheric pressure is December (1005.5mbar).
Average wind speed in September
Arnäsvall, Sweden
- Average wind speed in September: 12.6km/h
The windiest month (with the highest average wind speed) is December (15.1km/h).
The calmest month (with the lowest average wind speed) is August (11.4km/h).
Average humidity in September
Arnäsvall, Sweden
- Average humidity in September: 80%
The month with the highest relative humidity is February (92%).
The month with the lowest relative humidity is June (68%).
Average rainfall in September
Arnäsvall, Sweden
- Average rainfall in September: 27mm
The wettest month (with the highest rainfall) is December (43mm).
The driest month (with the least rainfall) is April (22mm).
Average rainfall days in September
Arnäsvall, Sweden
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is August (15 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in September
Arnäsvall, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is January (191mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Arnäsvall, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Arnäsvall, Sweden
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 20h and 18min).
The month with the shortest days is December (Average daylight: 4h and 48min).
- Average sunshine in September: 7h and 36min
The month with the most sunshine is July (Average sunshine: 12h and 36min).
The month with the least sunshine is December (Average sunshine: 1h and 30min).
Average sunshine days in September
Arnäsvall, Sweden
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is June (16.8 days).
The month with the least sunshine days is December (9.7 days).
Average UV index in September
Arnäsvall, Sweden
- 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, November and December (UV index 1).
Average cloud cover in September
Arnäsvall, Sweden
- Average cloud cover in September: 47
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is July (Cloud cover 40).
Average visibility in September
Arnäsvall, Sweden
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The month with the lowest visibility is February (7km).
