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
Svartsjö, Sweden, experiences a moderate temperature shift at the start of September, with average high-temperatures adjusting a bit from an agreeable 20.5°C (68.9°F) in August to a refreshing 16.1°C (61°F). Svartsjö usually reports an average low-temperature of 9.6°C (49.3°F) during the month of September.Humidity
The average relative humidity in September is 80%.Rainfall
In September, in Svartsjö, the rain falls for 13.4 days. Throughout September, 27mm (1.06") of precipitation is accumulated. Throughout the year, there are 133.7 rainfall days, and 340mm (13.39") of precipitation is accumulated.Snowfall
In Svartsjö, snow does not fall in June through September.Daylight
In Svartsjö, the average length of the day in September is 12h and 50min.On the first day of September, sunrise is at 05:47 and sunset at 19:50. On the last day of the month, sunrise is at 06:53 and sunset at 18:24 CEST.
Sunshine
In Svartsjö, the average sunshine in September is 8.1h.UV index
The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 3 in September, converts into the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Svartsjö?
What is the average humidity in September in Svartsjö?
How many days does it rain in September in Svartsjö?
When it does not snow in Svartsjö?
Does it snow in Svartsjö in September?
What is the average length of the day in September in Svartsjö?
When is the sunrise / sunset in September in Svartsjö?
How long on average sun shines in September in Svartsjö?
What is the UV index reading in September in Svartsjö?
Average temperature in September
Svartsjö, 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
Svartsjö, 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
Svartsjö, 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
Svartsjö, 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
Svartsjö, 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
Svartsjö, 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
Svartsjö, 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
Svartsjö, 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
Svartsjö, 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
Svartsjö, 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
Svartsjö, 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
Svartsjö, 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
Svartsjö, 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).
