September weather forecastBålsta, Sweden
September
Weather in September
September, the first month of the autumn in Bålsta, is still a refreshing month, with an average temperature fluctuating between 16.2°C (61.2°F) and 9.3°C (48.7°F).Temperature
September heralds a minor drop in average high-temperature, sliding from August's pleasant 20.8°C (69.4°F) to a refreshing 16.2°C (61.2°F). In Bålsta, in September, the average low-temperature is a frosty 9.3°C (48.7°F).Humidity
The average relative humidity in September is 80%.Rainfall
In Bålsta, in September, it is raining for 12.8 days, with typically 24mm (0.94") of accumulated precipitation. Throughout the year, there are 141.1 rainfall days, and 377mm (14.84") of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Bålsta is 12h and 51min.On the first day of the month, sunrise is at 05:47 and sunset at 19:52. On the last day of September, sunrise is at 06:54 and sunset at 18:25 CEST.
Sunshine
The average sunshine in September is 8.2h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The average daily UV index of 3 in September transforms into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. 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
Bålsta, Sweden
- Average high temperature in September: 16.2°C
The warmest month (with the highest average high temperature) is July (21.6°C).
The month with the lowest average high temperature is January (-0.9°C).
- Average low temperature in September: 9.3°C
The month with the highest average low temperature is July (13°C).
The coldest month (with the lowest average low temperature) is February (-4.3°C).
Average pressure in September
Bålsta, Sweden
- Average pressure in September: 1013.2mbar
The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1007.6mbar).
Average wind speed in September
Bålsta, Sweden
- Average wind speed in September: 12.8km/h
The windiest month (with the highest average wind speed) is December (16.2km/h).
The calmest months (with the lowest average wind speed) are July and August (11.5km/h).
Average humidity in September
Bålsta, Sweden
- Average humidity in September: 80%
The months with the highest relative humidity are January, February and December (89%).
The month with the lowest relative humidity is May (71%).
Average rainfall in September
Bålsta, Sweden
- Average rainfall in September: 24mm
The wettest month (with the highest rainfall) is July (56mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in September
Bålsta, Sweden
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is February (5.4 days).
Average snowfall in September
Bålsta, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (99mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Bålsta, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (11.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Bålsta, Sweden
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 36min).
The month with the shortest days is December (Average daylight: 6h and 12min).
- Average sunshine in September: 8h and 12min
The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 2h and 30min).
Average sunshine days in September
Bålsta, Sweden
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is October (15.6 days).
The month with the least sunshine days is July (10.7 days).
Average UV index in September
Bålsta, Sweden
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in September
Bålsta, Sweden
- Average cloud cover in September: 44
The month with the most cloud cover is February (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in September
Bålsta, 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).
