September weather forecastStavern, Norway
September
Weather in September
September, the first month of the autumn in Stavern, is still a mild month, with an average temperature varying between 12.3°C (54.1°F) and 15.4°C (59.7°F).Temperature
The transition into September marks the average high-temperature at a mild 15.4°C (59.7°F), differing minimally from August's 18°C (64.4°F). September in Stavern, Norway, witnesses a minor deviation from daytime peaks, with an average nighttime temperature of 12.3°C (54.1°F).Humidity
In Stavern, the average relative humidity in September is 76%.Rainfall
In Stavern, in September, during 13.1 rainfall days, 77mm (3.03") of precipitation is typically accumulated. Throughout the year, there are 149.7 rainfall days, and 722mm (28.43") of precipitation is accumulated.Snowfall
June through September are months without snowfall in Stavern.Sea temperature
In September, the average sea temperature in Stavern is 16°C (60.8°F).Note: Most people find swimming in 16°C (60.8°F) unenjoyable. As the water temperature falls from 21°C (69.8°F) to 15°C (59°F), controlling one's breathing becomes harder.
Daylight
In Stavern, Norway, the average length of the day in September is 12h and 50min.On the first day of September in Stavern, Norway, sunrise is at 06:18 and sunset at 20:20. On the last day of the month, sunrise is at 07:23 and sunset at 18:55 CEST.
Sunshine
In September, the average sunshine in Stavern, Norway, is 7.8h.UV index
In Stavern, Norway, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Stavern, Norway
- Average high temperature in September: 15.4°C
The warmest month (with the highest average high temperature) is July (18.2°C).
The month with the lowest average high temperature is February (1.5°C).
- Average low temperature in September: 12.3°C
The month with the highest average low temperature is July (15.1°C).
The coldest month (with the lowest average low temperature) is February (-1.2°C).
Average pressure in September
Stavern, Norway
- Average pressure in September: 1012.7mbar
The month with the highest atmospheric pressure is April (1014.4mbar).
The month with the lowest atmospheric pressure is December (1007.9mbar).
Average wind speed in September
Stavern, Norway
- Average wind speed in September: 22km/h
The windiest month (with the highest average wind speed) is November (25.7km/h).
The calmest month (with the lowest average wind speed) is July (17.5km/h).
Average humidity in September
Stavern, Norway
- Average humidity in September: 76%
The month with the highest relative humidity is February (83%).
The months with the lowest relative humidity are April and May (73%).
Average rainfall in September
Stavern, Norway
- Average rainfall in September: 77mm
The wettest month (with the highest rainfall) is November (84mm).
The driest month (with the least rainfall) is April (27mm).
Average rainfall days in September
Stavern, Norway
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is November (15.5 days).
The month with the least rainy days is February (8.6 days).
Average snowfall in September
Stavern, Norway
- Average snowfall in September: 0mm
The month with the highest snowfall is January (114mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Stavern, Norway
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Stavern, Norway
- Average sea temperature in September: 16°C
The best month for swimming (with the highest average sea temperature) is August (18.6°C).
The coldest month (with the lowest average sea temperature) is March (2.7°C).
Average daylight in September /
Average sunshine in September
Stavern, Norway
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 24min).
The month with the shortest days is December (Average daylight: 6h and 18min).
- Average sunshine in September: 7h and 48min
The month with the most sunshine is June (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 2h and 54min).
Average sunshine days in September
Stavern, Norway
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is April (17.5 days).
The month with the least sunshine days is February (10 days).
Average UV index in September
Stavern, Norway
- Average UV index in September: 4
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, November and December (UV index 2).
Average cloud cover in September
Stavern, Norway
- Average cloud cover in September: 44
The months with the most cloud cover are February and November (Cloud cover 62).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in September
Stavern, Norway
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March, October, November and December (9km).
