September weather forecastKalvsund, Sweden
September
Weather in September
The first month of the autumn, September, is also a moderate month in Kalvsund, Sweden, with an average temperature ranging between max 15.8°C (60.4°F) and min 12.7°C (54.9°F).Temperature
Kalvsund experiences a transition to a mild 15.8°C (60.4°F) in average high-temperatures with the arrival of September, not greatly differing from August's 18.3°C (64.9°F). Kalvsund records a slight downturn in temperature to an average of 12.7°C (54.9°F) during September nights.Humidity
In Kalvsund, the average relative humidity in September is 78%.Rainfall
In September, in Kalvsund, Sweden, the rain falls for 11.2 days. Throughout September, 16mm (0.63") of precipitation is accumulated. Throughout the year, there are 123.7 rainfall days, and 186mm (7.32") of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day in Kalvsund is 12h and 47min.On the first day of the month, sunrise is at 06:15 and sunset at 20:11. On the last day of September, in Kalvsund, sunrise is at 07:16 and sunset at 18:49 CEST.
Sunshine
In Kalvsund, the average sunshine in September is 8.1h.UV index
In September, the average daily maximum UV index in Kalvsund is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index, 4 during September, leads to the following recommendations:
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. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Kalvsund, Sweden
- Average high temperature in September: 15.8°C
The warmest month (with the highest average high temperature) is July (18.5°C).
The month with the lowest average high temperature is February (1.8°C).
- Average low temperature in September: 12.7°C
The month with the highest average low temperature is August (15.3°C).
The coldest month (with the lowest average low temperature) is February (-0.3°C).
Average pressure in September
Kalvsund, Sweden
- Average pressure in September: 1013.7mbar
The month with the highest atmospheric pressure is April (1014.7mbar).
The month with the lowest atmospheric pressure is December (1008.8mbar).
Average wind speed in September
Kalvsund, Sweden
- Average wind speed in September: 22.6km/h
The windiest month (with the highest average wind speed) is December (27km/h).
The calmest month (with the lowest average wind speed) is June (18.4km/h).
Average humidity in September
Kalvsund, Sweden
- Average humidity in September: 78%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is May (75%).
Average rainfall in September
Kalvsund, Sweden
- Average rainfall in September: 16mm
The wettest month (with the highest rainfall) is August (21mm).
The driest month (with the least rainfall) is April (8mm).
Average rainfall days in September
Kalvsund, Sweden
- Average rainfall days in September: 11.2 days
The month with the highest number of rainy days is August (13.6 days).
The month with the least rainy days is February (7.7 days).
Average snowfall in September
Kalvsund, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is January (12mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Kalvsund, Sweden
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Kalvsund, 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 42min).
- Average sunshine in September: 8h and 6min
The month with the most sunshine is June (Average sunshine: 11h and 18min).
The months with the least sunshine are January, February and November (Average sunshine: 3h and 42min).
Average sunshine days in September
Kalvsund, Sweden
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is March (19.8 days).
The month with the least sunshine days is August (13.3 days).
Average UV index in September
Kalvsund, Sweden
- Average UV index in September: 4
The month with the highest UV index is 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
Kalvsund, Sweden
- Average cloud cover in September: 45
The months with the most cloud cover are February and November (Cloud cover 62).
The month with the least cloud cover is June (Cloud cover 36).
Average visibility in September
Kalvsund, Sweden
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
