Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
September's arrival subtly correlates with a reduction in the average high-temperature, down from a pleasant 20.6°C (69.1°F) in August to a comfortable 16.1°C (61°F). The mean low-temperature during September nights in Sollentuna, Sweden, is a frosty 9.6°C (49.3°F).Humidity
In Sollentuna, Sweden, the average relative humidity in September is 80%.Rainfall
In September, the rain falls for 11.7 days. Throughout September, 22mm (0.87") of precipitation is accumulated. Throughout the year, there are 134.1 rainfall days, and 336mm (13.23") of precipitation is accumulated.Snowfall
In Sollentuna, snow does not fall in June through September.Daylight
In September, the average length of the day in Sollentuna is 12h and 50min.On the first day of September in Sollentuna, sunrise is at 05:46 and sunset at 19:50. On the last day of the month, sunrise is at 06:52 and sunset at 18:23 CEST.
Sunshine
In September, the average sunshine is 8h.UV index
The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum UV index of 3 in September translates into the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Sollentuna in September?
What is the average humidity in September in Sollentuna?
How much does it rain in Sollentuna in September?
When it does not snow in Sollentuna?
Does it snow in Sollentuna in September?
What is the average length of the day in September in Sollentuna?
When are sunrise and sunset in September in Sollentuna?
How long on average sun shines in September in Sollentuna?
How high is the UV index in September in Sollentuna?
Average temperature in September
Sollentuna, Sweden
- Average high temperature in September: 16.1°C
The warmest month (with the highest average high temperature) is July (21.7°C).
The month with the lowest average high temperature is January (-0.7°C).
- Average low temperature in September: 9.6°C
The month with the highest average low temperature is July (13.1°C).
The coldest month (with the lowest average low temperature) is January (-4°C).
Average pressure in September
Sollentuna, Sweden
- Average pressure in September: 1013.3mbar
The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1007.7mbar).
Average wind speed in September
Sollentuna, Sweden
- Average wind speed in September: 13.5km/h
The windiest month (with the highest average wind speed) is December (17.6km/h).
The calmest months (with the lowest average wind speed) are July and August (12.1km/h).
Average humidity in September
Sollentuna, Sweden
- Average humidity in September: 80%
The months with the highest relative humidity are January, February, November and December (88%).
The month with the lowest relative humidity is May (71%).
Average rainfall in September
Sollentuna, Sweden
- Average rainfall in September: 22mm
The wettest month (with the highest rainfall) is July (48mm).
The driest month (with the least rainfall) is April (15mm).
Average rainfall days in September
Sollentuna, Sweden
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in September
Sollentuna, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (82mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Sollentuna, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sollentuna, Sweden
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 12min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 2h and 24min).
Average sunshine days in September
Sollentuna, Sweden
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is October (16.4 days).
The month with the least sunshine days is July (11.7 days).
Average UV index in September
Sollentuna, 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
Sollentuna, Sweden
- Average cloud cover in September: 44
The month with the most cloud cover is February (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in September
Sollentuna, Sweden
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The month with the lowest visibility is February (8km).
