September weather forecastLilla Viken, Sweden
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Lilla Viken, Sweden, with an average temperature varying between 16°C (60.8°F) and 10.5°C (50.9°F).Temperature
September is characterized by a mild reduction in the average high-temperature, from a comfortable 19.3°C (66.7°F) in August to a still refreshing 16°C (60.8°F). An average nighttime temperature of 10.5°C (50.9°F) is witnessed in Lilla Viken, Sweden throughout September.Humidity
In Lilla Viken, the average relative humidity in September is 80%.Rainfall
In Lilla Viken, in September, it is raining for 16.6 days, with typically 51mm (2.01") of accumulated precipitation. Throughout the year, there are 175.1 rainfall days, and 555mm (21.85") of precipitation is accumulated.Snowfall
June through September are months without snowfall in Lilla Viken.Daylight
In Lilla Viken, the average length of the day in September is 12h and 48min.On the first day of September in Lilla Viken, sunrise is at 06:13 and sunset at 20:10. On the last day of the month, sunrise is at 07:15 and sunset at 18:48 CEST.
Sunshine
The average sunshine in September in Lilla Viken is 7.5h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Undertake protective steps - Preventing sun damage is advised. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lilla Viken, Sweden
- Average high temperature in September: 16°C
The warmest month (with the highest average high temperature) is July (20.3°C).
The months with the lowest average high temperature are January and February (1.4°C).
- Average low temperature in September: 10.5°C
The month with the highest average low temperature is August (13.3°C).
The coldest months (with the lowest average low temperature) are January and February (-1.8°C).
Average pressure in September
Lilla Viken, Sweden
- Average pressure in September: 1013.7mbar
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
Lilla Viken, Sweden
- Average wind speed in September: 15.6km/h
The windiest month (with the highest average wind speed) is December (18.2km/h).
The calmest month (with the lowest average wind speed) is June (13.7km/h).
Average humidity in September
Lilla Viken, Sweden
- Average humidity in September: 80%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is May (72%).
Average rainfall in September
Lilla Viken, Sweden
- Average rainfall in September: 51mm
The wettest month (with the highest rainfall) is August (66mm).
The driest month (with the least rainfall) is April (23mm).
Average rainfall days in September
Lilla Viken, Sweden
- Average rainfall days in September: 16.6 days
The month with the highest number of rainy days is August (19.3 days).
The month with the least rainy days is February (9.8 days).
Average snowfall in September
Lilla Viken, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is January (71mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Lilla Viken, Sweden
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lilla Viken, Sweden
- Average daylight in September: 12h and 48min
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 36min).
- Average sunshine in September: 7h and 30min
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 18min).
Average sunshine days in September
Lilla Viken, Sweden
- Average sunshine days in September: 11 days
The month with the most sunshine days is April (15.8 days).
The month with the least sunshine days is December (9.4 days).
Average UV index in September
Lilla Viken, Sweden
- Average UV index in September: 4
The months with the highest UV index are May, June and July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Lilla Viken, Sweden
- Average cloud cover in September: 48
The months with the most cloud cover are February, November and December (Cloud cover 65).
The month with the least cloud cover is June (Cloud cover 40).
Average visibility in September
Lilla Viken, Sweden
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, March, April, May, July, August, September, October, November and December (9km).
