September weather forecastValhall, Sweden
September
Weather in September
September, the first month of the autumn in Valhall, is still a comfortable month, with an average temperature varying between 12°C (53.6°F) and 16.5°C (61.7°F).Temperature
The move into September indicates a slight reduction in the average high-temperature, down from August's agreeable 20.1°C (68.2°F) to a comfortable 16.5°C (61.7°F). Valhall's average temperature during the nights of September is recorded at a cool 12°C (53.6°F).Humidity
The average relative humidity in September is 79%.Rainfall
In September, the rain falls for 16.5 days. Throughout September, 49mm (1.93") of precipitation is accumulated. Throughout the year, in Valhall, there are 184.4 rainfall days, and 560mm (22.05") of precipitation is accumulated.Snowfall
In Valhall, snow does not fall in May through September.Daylight
In Valhall, Sweden, the average length of the day in September is 12h and 45min.On the first day of September in Valhall, sunrise is at 06:13 and sunset at 20:03. On the last day of the month, sunrise is at 07:10 and sunset at 18:46 CEST.
Sunshine
The average sunshine in September is 7.5h.UV index
In September, the average daily maximum UV index in Valhall is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Take necessary precautions - Suggestions to elude sunburn are provided. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Valhall, Sweden
- Average high temperature in September: 16.5°C
The warmest month (with the highest average high temperature) is July (20.2°C).
The month with the lowest average high temperature is February (2°C).
- Average low temperature in September: 12°C
The month with the highest average low temperature is August (14.7°C).
The coldest month (with the lowest average low temperature) is February (-0.6°C).
Average pressure in September
Valhall, Sweden
- Average pressure in September: 1014.9mbar
The month with the highest atmospheric pressure is April (1015.4mbar).
The month with the lowest atmospheric pressure is December (1010.4mbar).
Average wind speed in September
Valhall, Sweden
- Average wind speed in September: 16.7km/h
The windiest month (with the highest average wind speed) is December (20.1km/h).
The calmest months (with the lowest average wind speed) are June and July (14.4km/h).
Average humidity in September
Valhall, Sweden
- Average humidity in September: 79%
The months with the highest relative humidity are January, February, November and December (87%).
The months with the lowest relative humidity are April and May (73%).
Average rainfall in September
Valhall, Sweden
- Average rainfall in September: 49mm
The wettest month (with the highest rainfall) is August (73mm).
The driest month (with the least rainfall) is April (21mm).
Average rainfall days in September
Valhall, Sweden
- Average rainfall days in September: 16.5 days
The month with the highest number of rainy days is August (20.8 days).
The month with the least rainy days is February (9.9 days).
Average snowfall in September
Valhall, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (77mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Valhall, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Valhall, Sweden
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 17h and 36min).
The month with the shortest days is December (Average daylight: 7h and 0min).
- Average sunshine in September: 7h and 30min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 3h and 0min).
Average sunshine days in September
Valhall, Sweden
- Average sunshine days in September: 10.2 days
The month with the most sunshine days is April (15.3 days).
The month with the least sunshine days is December (7.9 days).
Average UV index in September
Valhall, Sweden
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Valhall, Sweden
- Average cloud cover in September: 48
The month with the most cloud cover is December (Cloud cover 70).
The month with the least cloud cover is June (Cloud cover 39).
Average visibility in September
Valhall, Sweden
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March, October, November and December (9km).
