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
September is marked by a subtle drop in average high-temperatures, transitioning from a pleasant 20.6°C (69.1°F) in August to a refreshing 16.1°C (61°F). Throughout the month of September, Sundbyberg reports a steady low-temperature average of 9.7°C (49.5°F).Humidity
In September, the average relative humidity in Sundbyberg is 80%.Rainfall
In Sundbyberg, in September, it is raining for 11.7 days, with typically 21mm (0.83") of accumulated precipitation. Throughout the year, in Sundbyberg, there are 132.3 rainfall days, and 302mm (11.89") of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Sundbyberg, the average length of the day in September is 12h and 50min.On the first day of September in Sundbyberg, sunrise is at 05:46 and sunset at 19:49. On the last day of the month, sunrise is at 06:52 and sunset at 18:23 CEST.
Sunshine
In Sundbyberg, the average sunshine in September is 8.2h.UV index
In September, the average daily maximum UV index in Sundbyberg, Sweden, is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: A daily high UV index of 3 in September leads to these guidelines:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Frequently asked questions
What is the temperature in September in Sundbyberg?
What is the average humidity in September in Sundbyberg?
How many days does it rain in September in Sundbyberg?
When it does not snow in Sundbyberg?
Does it snow in Sundbyberg in September?
What is the average length of the day in September in Sundbyberg?
What time are sunrise and sunset in September in Sundbyberg?
How long on average sun shines in September in Sundbyberg?
What is the UV index reading in September in Sundbyberg?
Average temperature in September
Sundbyberg, Sweden
- Average high temperature in September: 16.1°C
The warmest month (with the highest average high temperature) is July (21.4°C).
The month with the lowest average high temperature is January (-0.4°C).
- Average low temperature in September: 9.7°C
The month with the highest average low temperature is July (13.3°C).
The coldest month (with the lowest average low temperature) is January (-3.7°C).
Average pressure in September
Sundbyberg, 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
Sundbyberg, Sweden
- Average wind speed in September: 14km/h
The windiest month (with the highest average wind speed) is December (18.3km/h).
The calmest months (with the lowest average wind speed) are July and August (12.4km/h).
Average humidity in September
Sundbyberg, Sweden
- Average humidity in September: 80%
The months with the highest relative humidity are January and December (88%).
The month with the lowest relative humidity is May (71%).
Average rainfall in September
Sundbyberg, Sweden
- Average rainfall in September: 21mm
The wettest month (with the highest rainfall) is July (39mm).
The driest months (with the least rainfall) are January and April (14mm).
Average rainfall days in September
Sundbyberg, Sweden
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is July (15.5 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in September
Sundbyberg, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (72mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Sundbyberg, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (11.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sundbyberg, 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
Sundbyberg, Sweden
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is April (15.1 days).
The months with the least sunshine days are February and August (12.8 days).
Average UV index in September
Sundbyberg, 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
Sundbyberg, Sweden
- Average cloud cover in September: 43
The month with the most cloud cover is February (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in September
Sundbyberg, 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).
Sundbyberg, Sweden
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