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
The arrival of September correlates with a minor temperature reduction, down from August's 19.4°C (66.9°F) to a still refreshing 16°C (60.8°F). In Önnered, a slight decrease from the daytime peak is noted during the month of September, with an average low-temperature of 11.1°C (52°F).Humidity
In Önnered, the average relative humidity in September is 80%.Rainfall
In Önnered, in September, during 16.1 rainfall days, 51mm (2.01") of precipitation is typically accumulated. In Önnered, during the entire year, the rain falls for 179.3 days and collects up to 570mm (22.44") of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Önnered, the average length of the day in September is 12h and 47min.On the first day of the month, sunrise is at 06:14 and sunset at 20:10. On the last day of September, sunrise is at 07:15 and sunset at 18:49 CEST.
Sunshine
In Önnered, Sweden, the average sunshine in September is 7.6h.UV index
In September, the average daily maximum UV index in Önnered is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Önnered?
What is the average humidity in September in Önnered?
How much does it rain in Önnered in September?
When it does not snow in Önnered?
Does it snow in Önnered in September?
What is the average length of the day in September in Önnered?
When is the sunrise / sunset in September in Önnered?
How long on average sun shines in September in Önnered?
What is the UV index intensity in September in Önnered?
Average temperature in September
Önnered, Sweden
- Average high temperature in September: 16°C
The warmest month (with the highest average high temperature) is July (19.8°C).
The month with the lowest average high temperature is February (1.6°C).
- Average low temperature in September: 11.1°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is February (-1.6°C).
Average pressure in September
Önnered, Sweden
- Average pressure in September: 1013.8mbar
The month with the highest atmospheric pressure is April (1014.7mbar).
The month with the lowest atmospheric pressure is December (1008.9mbar).
Average wind speed in September
Önnered, Sweden
- Average wind speed in September: 17km/h
The windiest month (with the highest average wind speed) is December (20.3km/h).
The calmest month (with the lowest average wind speed) is June (14.8km/h).
Average humidity in September
Önnered, Sweden
- Average humidity in September: 80%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is May (73%).
Average rainfall in September
Önnered, Sweden
- Average rainfall in September: 51mm
The wettest month (with the highest rainfall) is August (68mm).
The driest month (with the least rainfall) is April (24mm).
Average rainfall days in September
Önnered, Sweden
- Average rainfall days in September: 16.1 days
The month with the highest number of rainy days is August (19 days).
The month with the least rainy days is February (9.7 days).
Average snowfall in September
Önnered, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is January (58mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Önnered, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Önnered, Sweden
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 0min).
The month with the shortest days is December (Average daylight: 6h and 42min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).
Average sunshine days in September
Önnered, Sweden
- Average sunshine days in September: 11 days
The month with the most sunshine days is April (15.3 days).
The month with the least sunshine days is August (9.5 days).
Average UV index in September
Önnered, Sweden
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Önnered, Sweden
- Average cloud cover in September: 48
The months with the most cloud cover are January, February, November and December (Cloud cover 64).
The month with the least cloud cover is June (Cloud cover 39).
Average visibility in September
Önnered, Sweden
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March, October, November and December (9km).
