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
Start of September brings a slight shift in the average high-temperature, dipping a bit from August's agreeable 20.3°C (68.5°F) to a refreshing 15.6°C (60.1°F). An average low-temperature of 9.6°C (49.3°F) is anticipated throughout the nights in Älvkarleby during September.Humidity
The average relative humidity in September in Älvkarleby, Sweden, is 78%.Rainfall
In September, in Älvkarleby, the rain falls for 10.9 days. Throughout September, 22mm (0.87") of precipitation is accumulated. Throughout the year, there are 118.2 rainfall days, and 304mm (11.97") of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in Älvkarleby is 12h and 53min.On the first day of September in Älvkarleby, sunrise is at 05:45 and sunset at 19:55. On the last day of the month, sunrise is at 06:55 and sunset at 18:25 CEST.
Sunshine
The average sunshine in September is 7.9h.UV index
In Älvkarleby, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum daily UV index of 3 during September morphs into the following directions:
Ensure safety - Sun damage prevention is strongly urged. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Frequently asked questions
What is the average September temperature in Älvkarleby?
What is the average humidity in September in Älvkarleby?
How many days does it rain in September in Älvkarleby?
When it does not snow in Älvkarleby?
Does it snow in Älvkarleby in September?
How many hours of daylight does Älvkarleby have in September?
What time are sunrise and sunset in September in Älvkarleby?
How long on average sun shines in September in Älvkarleby?
What is the UV index intensity in September in Älvkarleby?
Average temperature in September
Älvkarleby, Sweden
- Average high temperature in September: 15.6°C
The warmest month (with the highest average high temperature) is July (20.8°C).
The month with the lowest average high temperature is January (-0.8°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 (-3.8°C).
Average pressure in September
Älvkarleby, Sweden
- Average pressure in September: 1012.8mbar
The month with the highest atmospheric pressure is May (1014.6mbar).
The month with the lowest atmospheric pressure is December (1006.9mbar).
Average wind speed in September
Älvkarleby, Sweden
- Average wind speed in September: 12.8km/h
The windiest month (with the highest average wind speed) is December (14.9km/h).
The calmest month (with the lowest average wind speed) is August (11.5km/h).
Average humidity in September
Älvkarleby, Sweden
- Average humidity in September: 78%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is May (69%).
Average rainfall in September
Älvkarleby, Sweden
- Average rainfall in September: 22mm
The wettest month (with the highest rainfall) is July (42mm).
The driest month (with the least rainfall) is April (15mm).
Average rainfall days in September
Älvkarleby, Sweden
- Average rainfall days in September: 10.9 days
The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is February (4.2 days).
Average snowfall in September
Älvkarleby, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is March (103mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Älvkarleby, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Älvkarleby, Sweden
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 54min).
The month with the shortest days is December (Average daylight: 5h and 54min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 2h and 24min).
Average sunshine days in September
Älvkarleby, Sweden
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is April (17.3 days).
The month with the least sunshine days is July (13.2 days).
Average UV index in September
Älvkarleby, 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, February and November (UV index 1).
Average cloud cover in September
Älvkarleby, Sweden
- Average cloud cover in September: 45
The month with the most cloud cover is February (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 40).
Average visibility in September
Älvkarleby, Sweden
- Average visibility in September: 9km
The months with the highest visibility are January, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are February and March (8km).
Älvkarleby, Sweden
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