September weather forecastÄrna, Sweden
September
Weather in September
September, the first month of the autumn in Ärna, is still a comfortable month, with an average temperature fluctuating between 8.9°C (48°F) and 16.2°C (61.2°F).Temperature
With the onset of September, the average high-temperature subtly recedes from August's agreeable 20.9°C (69.6°F) to a comfortable 16.2°C (61.2°F). In Ärna, the September nights cool down to an average low of 8.9°C (48°F).Humidity
The average relative humidity in September in Ärna is 79%.Rainfall
In Ärna, in September, it is raining for 8.4 days, with typically 16mm (0.63") of accumulated precipitation. In Ärna, during the entire year, the rain falls for 116.7 days and collects up to 205mm (8.07") of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in Ärna is 12h and 50min.On the first day of the month, sunrise is at 05:51 and sunset at 19:55. On the last day of September, sunrise is at 06:58 and sunset at 18:29 CEST.
Sunshine
In Ärna, the average sunshine in September is 8h.UV index
In Ärna, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 3 during September leads to these instructions:
Exercise caution. Those with pale skin may experience burns in less than half an hour. When the Sun is at its strongest around midday, find shade and limit exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ärna, Sweden
- Average high temperature in September: 16.2°C
The warmest month (with the highest average high temperature) is July (21.6°C).
The month with the lowest average high temperature is January (-1°C).
- Average low temperature in September: 8.9°C
The month with the highest average low temperature is July (12.6°C).
The coldest months (with the lowest average low temperature) are January and February (-4.8°C).
Average pressure in September
Ärna, Sweden
- Average pressure in September: 1013.4mbar
The month with the highest atmospheric pressure is May (1014.7mbar).
The month with the lowest atmospheric pressure is December (1007.9mbar).
Average wind speed in September
Ärna, Sweden
- Average wind speed in September: 12.6km/h
The windiest month (with the highest average wind speed) is December (15.1km/h).
The calmest month (with the lowest average wind speed) is August (11.3km/h).
Average humidity in September
Ärna, Sweden
- Average humidity in September: 79%
The months with the highest relative humidity are January, February and December (90%).
The month with the lowest relative humidity is May (71%).
Average rainfall in September
Ärna, Sweden
- Average rainfall in September: 16mm
The wettest month (with the highest rainfall) is July (30mm).
The driest months (with the least rainfall) are February and April (11mm).
Average rainfall days in September
Ärna, Sweden
- Average rainfall days in September: 8.4 days
The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in September
Ärna, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is January (52mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Ärna, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Ärna, Sweden
- Average daylight in September: 12h and 48min
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 0min
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 36min).
Average sunshine days in September
Ärna, Sweden
- Average sunshine days in September: 17.6 days
The month with the most sunshine days is September (17.6 days).
The month with the least sunshine days is July (13.3 days).
Average UV index in September
Ärna, 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
Ärna, Sweden
- Average cloud cover in September: 46
The month with the most cloud cover is February (Cloud cover 67).
The months with the least cloud cover are June, July and August (Cloud cover 42).
Average visibility in September
Ärna, Sweden
- Average visibility in September: 9km
The months with the highest visibility are April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January, February, March, November and December (8km).
