September weather forecastÄrla, Sweden
September
Weather in September
September, the first month of the autumn in Ärla, is still a comfortable month, with an average temperature varying between 8.9°C (48°F) and 16.2°C (61.2°F).Temperature
The shift from August to September coincides with a small decrease in the average high-temperature, down to a comfortable 16.2°C (61.2°F) from an agreeable 20.9°C (69.6°F). Nighttime temperature lowers to an average of 8.9°C (48°F) in September.Humidity
The average relative humidity in September in Ärla is 79%.Rainfall
In Ärla, in September, during 8.4 rainfall days, 16mm (0.63") of precipitation is typically accumulated. Throughout the year, there are 116.7 rainfall days, and 205mm (8.07") of precipitation is accumulated.Snowfall
In Ärla, snow does not fall in June through September.Daylight
In Ärla, the average length of the day in September is 12h and 50min.On the first day of September, sunrise is at 05:51 and sunset at 19:54. On the last day of the month, sunrise is at 06:57 and sunset at 18:28 CEST.
Sunshine
The average sunshine in September is 8h.UV index
In Ärla, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: In September, an average UV index of 3 transforms into the following instructions:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ärla, 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
Ärla, 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
Ärla, 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
Ärla, 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
Ärla, 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
Ärla, 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
Ärla, 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
Ärla, 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
Ärla, 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 18min).
- 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
Ärla, 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
Ärla, 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
Ärla, 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
Ärla, 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).
