September weather forecastSvelvik, Norway
September
Weather in September
The first month of the autumn, September, is still a mild month in Svelvik, Norway, with temperature in the range of an average high of 14.6°C (58.3°F) and an average low of 7.2°C (45°F).Temperature
Svelvik observes a small decrease in the average high-temperature with the arrival of September, falling from August's comfortable 18.8°C (65.8°F) to a still refreshing 14.6°C (58.3°F). An average low-temperature of 7.2°C (45°F) marks the month of September.Humidity
The average relative humidity in September is 80%.Rainfall
In Svelvik, in September, during 10.8 rainfall days, 35mm (1.38") of precipitation is typically accumulated. In Svelvik, during the entire year, the rain falls for 123.4 days and collects up to 384mm (15.12") of precipitation.Snowfall
June through September are months without snowfall in Svelvik, Norway.Sea temperature
In Svelvik, the average seawater temperature in September is 15.5°C (59.9°F).Note: A surface water temperature of 15.5°C (59.9°F) does not provide an enjoyable swimming experience for most. Breathing control becomes more challenging as the water temperature drops below 21°C (69.8°F).
Daylight
The average length of the day in September is 12h and 51min.On the first day of September, sunrise is at 06:15 and sunset at 20:20. On the last day of the month, sunrise is at 07:22 and sunset at 18:53 CEST.
Sunshine
In Svelvik, the average sunshine in September is 7.8h.UV index
In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: In September, the maximum UV index of 3 transforms into these recommendations:
Guard yourself - Avoiding sunburn is suggested. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. 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
Svelvik, Norway
- Average high temperature in September: 14.6°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 (-2.4°C).
- Average low temperature in September: 7.2°C
The month with the highest average low temperature is July (10.6°C).
The coldest months (with the lowest average low temperature) are January and February (-7.2°C).
Average pressure in September
Svelvik, Norway
- Average pressure in September: 1012.6mbar
The month with the highest atmospheric pressure is April (1014.5mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed in September
Svelvik, Norway
- Average wind speed in September: 9.6km/h
The windiest months (with the highest average wind speed) are January and December (10.6km/h).
The calmest month (with the lowest average wind speed) is August (8.4km/h).
Average humidity in September
Svelvik, Norway
- Average humidity in September: 80%
The month with the highest relative humidity is February (90%).
The month with the lowest relative humidity is May (70%).
Average rainfall in September
Svelvik, Norway
- Average rainfall in September: 35mm
The wettest months (with the highest rainfall) are July and November (42mm).
The driest month (with the least rainfall) is April (16mm).
Average rainfall days in September
Svelvik, Norway
- Average rainfall days in September: 10.8 days
The month with the highest number of rainy days is July (15.2 days).
The months with the least rainy days are January and February (4.8 days).
Average snowfall in September
Svelvik, Norway
- Average snowfall in September: 0mm
The month with the highest snowfall is March (113mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Svelvik, Norway
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Svelvik, Norway
- Average sea temperature in September: 15.5°C
The best month for swimming (with the highest average sea temperature) is August (17.8°C).
The coldest month (with the lowest average sea temperature) is March (3.2°C).
Average daylight in September /
Average sunshine in September
Svelvik, Norway
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 36min).
The month with the shortest days is December (Average daylight: 6h and 12min).
- Average sunshine in September: 7h and 48min
The month with the most sunshine is June (Average sunshine: 11h and 30min).
The months with the least sunshine are January and December (Average sunshine: 3h and 24min).
Average sunshine days in September
Svelvik, Norway
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is April (19.1 days).
The month with the least sunshine days is July (13.5 days).
Average UV index in September
Svelvik, Norway
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in September
Svelvik, Norway
- Average cloud cover in September: 46
The month with the most cloud cover is February (Cloud cover 62).
The month with the least cloud cover is June (Cloud cover 43).
Average visibility in September
Svelvik, Norway
- Average visibility in September: 8km
The months with the highest visibility are April, May, June and July (9km).
The months with the lowest visibility are January, February and March (7km).
