September weather forecastUnbyn, Sweden
September
Weather in September
September, the first month of the autumn in Unbyn, is also a fresh month, with an average temperature varying between 12.8°C (55°F) and 6.2°C (43.2°F).Temperature
Onset of September comes with a temperature decline, the average high falling from a refreshing 18.3°C (64.9°F) in August to a fresh 12.8°C (55°F). Throughout the month of September, Unbyn observes an average nighttime temperature of 6.2°C (43.2°F).Humidity
The average relative humidity in September in Unbyn is 80%.Rainfall
In Unbyn, in September, during 13 rainfall days, 36mm (1.42") of precipitation is typically accumulated. Throughout the year, there are 122.6 rainfall days, and 434mm (17.09") of precipitation is accumulated.Snowfall
In Unbyn, Sweden, snow does not fall in June through September.Daylight
In September, the average length of the day in Unbyn, Sweden, is 13h and 6min.On the first day of the month, sunrise is at 05:11 and sunset at 19:54. On the last day of September, sunrise is at 06:41 and sunset at 18:03 CEST.
Sunshine
In Unbyn, Sweden, the average sunshine in September is 7.3h.UV index
In September, the average daily maximum UV index in Unbyn 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 ordinary person.Note: In September, the maximum UV index of 3 suggests these recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Unbyn, Sweden
- Average high temperature in September: 12.8°C
The warmest month (with the highest average high temperature) is July (19.9°C).
The month with the lowest average high temperature is January (-7.1°C).
- Average low temperature in September: 6.2°C
The month with the highest average low temperature is July (11.5°C).
The coldest month (with the lowest average low temperature) is February (-12.7°C).
Average pressure in September
Unbyn, Sweden
- Average pressure in September: 1010.8mbar
The month with the highest atmospheric pressure is May (1014.1mbar).
The month with the lowest atmospheric pressure is December (1004.8mbar).
Average wind speed in September
Unbyn, Sweden
- Average wind speed in September: 10.3km/h
The windiest month (with the highest average wind speed) is March (10.9km/h).
The calmest month (with the lowest average wind speed) is April (9.5km/h).
Average humidity in September
Unbyn, Sweden
- Average humidity in September: 80%
The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is June (63%).
Average rainfall in September
Unbyn, Sweden
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is July (55mm).
The driest month (with the least rainfall) is April (25mm).
Average rainfall days in September
Unbyn, Sweden
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (3.5 days).
Average snowfall in September
Unbyn, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is December (289mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Unbyn, Sweden
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (19.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Unbyn, Sweden
- Average daylight in September: 13h and 6min
The month with the longest days is June (Average daylight: 22h and 48min).
The month with the shortest days is December (Average daylight: 3h and 24min).
- Average sunshine in September: 7h and 18min
The month with the most sunshine is July (Average sunshine: 12h and 24min).
The month with the least sunshine is December (Average sunshine: 1h and 24min).
Average sunshine days in September
Unbyn, Sweden
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is October (15.8 days).
The month with the least sunshine days is April (8.6 days).
Average UV index in September
Unbyn, 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, February, March, October, November and December (UV index 1).
Average cloud cover in September
Unbyn, Sweden
- Average cloud cover in September: 49
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is July (Cloud cover 42).
Average visibility in September
Unbyn, 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 (5km).
