September weather forecastSynnerål, Sweden
September
Weather in September
September, the first month of the autumn in Synnerål, is also a moderate month, with temperature in the range of an average low of 8.7°C (47.7°F) and an average high of 15.3°C (59.5°F).Temperature
The arrival of September correlates with a minor temperature reduction, down from August's comfortable 19.3°C (66.7°F) to a moderate 15.3°C (59.5°F). In Synnerål, the average nighttime temperature during September is a chilly 8.7°C (47.7°F).Humidity
The average relative humidity in September in Synnerål is 83%.Rainfall
In September, the rain falls for 7.9 days. Throughout September, 11mm (0.43") of precipitation is accumulated. Throughout the year, there are 102.8 rainfall days, and 186mm (7.32") of precipitation is accumulated.Snowfall
In Synnerål, snow does not fall in June through September.Daylight
In Synnerål, the average length of the day in September is 12h and 48min.On the first day of September, sunrise is at 06:06 and sunset at 20:04. On the last day of the month, sunrise is at 07:08 and sunset at 18:42 CEST.
Sunshine
The average sunshine in September in Synnerål, Sweden, is 7.1h.UV index
In Synnerål, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 3 suggests these recommendations:
Take necessary precautions - Defending against sun damage is advocated. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Synnerål, Sweden
- Average high temperature in September: 15.3°C
The warmest month (with the highest average high temperature) is July (20.3°C).
The month with the lowest average high temperature is January (-0.4°C).
- Average low temperature in September: 8.7°C
The months with the highest average low temperature are July and August (11.4°C).
The coldest month (with the lowest average low temperature) is February (-3.8°C).
Average pressure in September
Synnerål, Sweden
- Average pressure in September: 1013.8mbar
The month with the highest atmospheric pressure is April (1014.6mbar).
The month with the lowest atmospheric pressure is December (1008.7mbar).
Average wind speed in September
Synnerål, Sweden
- Average wind speed in September: 13.8km/h
The windiest month (with the highest average wind speed) is December (17.1km/h).
The calmest month (with the lowest average wind speed) is July (12.1km/h).
Average humidity in September
Synnerål, Sweden
- Average humidity in September: 83%
The months with the highest relative humidity are January, February, November and December (90%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Synnerål, Sweden
- Average rainfall in September: 11mm
The wettest month (with the highest rainfall) is July (27mm).
The driest month (with the least rainfall) is April (7mm).
Average rainfall days in September
Synnerål, Sweden
- Average rainfall days in September: 7.9 days
The month with the highest number of rainy days is July (14.1 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in September
Synnerål, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (44mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Synnerål, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (12 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Synnerål, Sweden
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 6min).
The month with the shortest days is December (Average daylight: 6h and 36min).
- Average sunshine in September: 7h and 6min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 3h and 0min).
Average sunshine days in September
Synnerål, Sweden
- Average sunshine days in September: 19.4 days
The months with the most sunshine days are April and September (19.4 days).
The month with the least sunshine days is July (13.7 days).
Average UV index in September
Synnerål, Sweden
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Synnerål, Sweden
- Average cloud cover in September: 52
The month with the most cloud cover is December (Cloud cover 71).
The months with the least cloud cover are April and June (Cloud cover 45).
Average visibility in September
Synnerål, 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).
