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's arrival corresponds with a decrease in average high-temperatures, from August's comfortable 17.3°C (63.1°F) to a cool 12.3°C (54.1°F). Throughout September, the average low-temperature in Alsen records at an icy 5.5°C (41.9°F).Humidity
In September, the average relative humidity is 80%.Rainfall
In Alsen, during September, the rain falls for 13.6 days and regularly aggregates up to 38mm (1.5") of precipitation. In Alsen, during the entire year, the rain falls for 119.1 days and collects up to 401mm (15.79") of precipitation.Snowfall
In Alsen, Sweden, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 59min.On the first day of the month, sunrise is at 05:50 and sunset at 20:17. On the last day of September, sunrise is at 07:11 and sunset at 18:37 CEST.
Sunshine
The average sunshine in September in Alsen, Sweden, is 7.3h.UV index
The average daily maximum UV index in September in Alsen is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, the maximum UV index of 2 suggests these recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Around midday, solar radiation is most harmful; hence, exposure should be limited. Opt for tightly woven and loose clothing to enhance protection from the Sun. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Frequently asked questions
What are the temperatures in Alsen in September?
What is the average humidity in September in Alsen?
How many days does it rain in September in Alsen?
When it does not snow in Alsen?
Does it snow in Alsen in September?
How many hours of daylight does Alsen have in September?
When is the sunrise / sunset in September in Alsen?
How long on average sun shines in September in Alsen?
How high is the UV index in September in Alsen?
Average temperature in September
Alsen, Sweden
- Average high temperature in September: 12.3°C
The warmest month (with the highest average high temperature) is July (18.8°C).
The month with the lowest average high temperature is January (-5.3°C).
- Average low temperature in September: 5.5°C
The month with the highest average low temperature is July (9.6°C).
The coldest month (with the lowest average low temperature) is February (-9.9°C).
Average pressure in September
Alsen, Sweden
- Average pressure in September: 1011.7mbar
The month with the highest atmospheric pressure is May (1014.5mbar).
The month with the lowest atmospheric pressure is December (1005.7mbar).
Average wind speed in September
Alsen, Sweden
- Average wind speed in September: 12.6km/h
The windiest month (with the highest average wind speed) is June (14.3km/h).
The calmest month (with the lowest average wind speed) is August (11.5km/h).
Average humidity in September
Alsen, Sweden
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is June (67%).
Average rainfall in September
Alsen, Sweden
- Average rainfall in September: 38mm
The wettest month (with the highest rainfall) is July (53mm).
The driest months (with the least rainfall) are February and April (20mm).
Average rainfall days in September
Alsen, Sweden
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is July (16.2 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in September
Alsen, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is January (211mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Alsen, Sweden
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is January (16.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Alsen, Sweden
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 20h and 18min).
The month with the shortest days is December (Average daylight: 4h and 48min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 1h and 30min).
Average sunshine days in September
Alsen, Sweden
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is October (17.7 days).
The month with the least sunshine days is December (12.2 days).
Average UV index in September
Alsen, Sweden
- Average UV index in September: 2
The months with the highest UV index are May, June and July (UV index 4).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Alsen, Sweden
- Average cloud cover in September: 51
The months with the most cloud cover are January and February (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 45).
Average visibility in September
Alsen, Sweden
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January and February (7km).
Alsen, Sweden
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