September weather forecastJönåker, Sweden
September
Weather in September
September, the first month of the autumn in Jönåker, is still a mild month, with an average temperature ranging between max 15.8°C (60.4°F) and min 10.5°C (50.9°F).Temperature
A moderate decline in average high-temperatures is noted in September, moving from a pleasant 20°C (68°F) in August to a moderate 15.8°C (60.4°F). Nighttime temperatures consistently average a fresh 10.5°C (50.9°F) during September.Humidity
In Jönåker, the average relative humidity in September is 79%.Rainfall
In Jönåker, Sweden, during September, the rain falls for 11.1 days and regularly aggregates up to 28mm (1.1") of precipitation. Throughout the year, there are 144.2 rainfall days, and 380mm (14.96") of precipitation is accumulated.Snowfall
In Jönåker, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 49min.On the first day of September in Jönåker, sunrise is at 05:52 and sunset at 19:53. On the last day of the month, sunrise is at 06:56 and sunset at 18:29 CEST.
Sunshine
The average sunshine in September is 8.4h.UV index
In September, the average daily maximum UV index in Jönåker is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 3 in September translates into this advice:
Act with care - Obligation to protect against skin and eye damage is highlighted. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Jönåker, Sweden
- Average high temperature in September: 15.8°C
The warmest month (with the highest average high temperature) is July (20.6°C).
The month with the lowest average high temperature is January (0.3°C).
- Average low temperature in September: 10.5°C
The month with the highest average low temperature is August (13.6°C).
The coldest month (with the lowest average low temperature) is January (-3°C).
Average pressure in September
Jönåker, Sweden
- Average pressure in September: 1013.7mbar
The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1008.4mbar).
Average wind speed in September
Jönåker, Sweden
- Average wind speed in September: 15.9km/h
The windiest month (with the highest average wind speed) is December (18.8km/h).
The calmest month (with the lowest average wind speed) is July (13.4km/h).
Average humidity in September
Jönåker, 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 May and June (73%).
Average rainfall in September
Jönåker, Sweden
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is July (55mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in September
Jönåker, Sweden
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in September
Jönåker, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (66mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Jönåker, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Jönåker, Sweden
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 18min).
The month with the shortest days is December (Average daylight: 6h and 24min).
- Average sunshine in September: 8h and 24min
The month with the most sunshine is June (Average sunshine: 12h and 24min).
The month with the least sunshine is December (Average sunshine: 2h and 54min).
Average sunshine days in September
Jönåker, Sweden
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is April (15.2 days).
The month with the least sunshine days is February (11.8 days).
Average UV index in September
Jönåker, Sweden
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Jönåker, Sweden
- Average cloud cover in September: 41
The month with the most cloud cover is February (Cloud cover 66).
The months with the least cloud cover are June and August (Cloud cover 37).
Average visibility in September
Jönåker, Sweden
- Average visibility in September: 10km
The months with the highest visibility are April, June, July, August and September (10km).
The months with the lowest visibility are January, February, March, May, October, November and December (9km).
