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
Weather in September
Temperature
The arrival of September correlates with a minor temperature reduction, down from August's pleasant 20.5°C (68.9°F) to an enjoyable 16.1°C (61°F). Throughout September, Vällingby witnesses a consistent average low-temperature of 9.6°C (49.3°F).Humidity
In Vällingby, the average relative humidity in September is 80%.Rainfall
In Vällingby, in September, it is raining for 13.4 days, with typically 27mm (1.06") of accumulated precipitation. Throughout the year, there are 133.7 rainfall days, and 340mm (13.39") of precipitation is accumulated.Snowfall
June through September are months without snowfall in Vällingby.Daylight
In Vällingby, the average length of the day in September is 12h and 50min.On the first day of September in Vällingby, Sweden, 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 18:24 CEST.
Sunshine
In September, the average sunshine is 8.1h.UV index
The average daily maximum UV index in September in Vällingby is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: An average UV index of 3 in September transforms into this advice:
Take necessary precautions - Protection from skin and eye injury is mandatory. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Frequently asked questions
What are the temperatures in Vällingby in September?
What is the average humidity in September in Vällingby?
How much does it rain in Vällingby in September?
When it does not snow in Vällingby?
Does it snow in Vällingby in September?
How many hours of daylight does Vällingby have in September?
When is the sunrise / sunset in September in Vällingby?
How long on average sun shines in September in Vällingby?
What is the UV index intensity in September in Vällingby?
Average temperature in September
Vällingby, Sweden
- Average high temperature in September: 16.1°C
The warmest month (with the highest average high temperature) is July (21.3°C).
The month with the lowest average high temperature is January (-0.5°C).
- Average low temperature in September: 9.6°C
The month with the highest average low temperature is July (13.2°C).
The coldest month (with the lowest average low temperature) is January (-3.9°C).
Average pressure in September
Vällingby, Sweden
- Average pressure in September: 1013.4mbar
The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1007.8mbar).
Average wind speed in September
Vällingby, Sweden
- Average wind speed in September: 13.8km/h
The windiest month (with the highest average wind speed) is December (18km/h).
The calmest months (with the lowest average wind speed) are July and August (12.3km/h).
Average humidity in September
Vällingby, Sweden
- Average humidity in September: 80%
The months with the highest relative humidity are January, February and December (88%).
The month with the lowest relative humidity is May (72%).
Average rainfall in September
Vällingby, Sweden
- Average rainfall in September: 27mm
The wettest month (with the highest rainfall) is July (43mm).
The driest month (with the least rainfall) is April (13mm).
Average rainfall days in September
Vällingby, Sweden
- Average rainfall days in September: 13.4 days
The months with the highest number of rainy days are July and August (15.7 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in September
Vällingby, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (86mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Vällingby, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Vällingby, 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 1min
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
Vällingby, Sweden
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is May (17.9 days).
The months with the least sunshine days are July and November (12.5 days).
Average UV index in September
Vällingby, 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
Vällingby, Sweden
- Average cloud cover in September: 43
The month with the most cloud cover is February (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in September
Vällingby, Sweden
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, March, April, May, July, August, September, October, November and December (9km).
Vällingby, Sweden
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