September weather forecastStenungsund, Sweden
September
Weather in September
The first month of the autumn, September, is still a mild month in Stenungsund, Sweden, with an average temperature varying between 11.1°C (52°F) and 15.8°C (60.4°F).Temperature
Stenungsund's September weather features a light decline in high-temperatures, reducing from a comfortable 19.1°C (66.4°F) in August to a mild 15.8°C (60.4°F). Stenungsund's nighttime temperature in September experiences a slight dip from daytime highs, falling to an average of 11.1°C (52°F).Humidity
In Stenungsund, the average relative humidity in September is 80%.Rainfall
In Stenungsund, Sweden, during September, the rain falls for 16.1 days and regularly aggregates up to 50mm (1.97") of precipitation. In Stenungsund, Sweden, during the entire year, the rain falls for 172.9 days and collects up to 557mm (21.93") of precipitation.Snowfall
In Stenungsund, snow does not fall in May through September.Sea temperature
In Stenungsund, in September, the average water temperature is 16°C (60.8°F).Note: Most people do not enjoy swimming in water that is 16°C (60.8°F). Breathing becomes increasingly challenging as the water temperature dips under 21°C (69.8°F).
Daylight
In September, the average length of the day in Stenungsund, Sweden, is 12h and 48min.On the first day of September, sunrise is at 06:13 and sunset at 20:11. On the last day of the month, sunrise is at 07:15 and sunset at 18:49 CEST.
Sunshine
In September, the average sunshine in Stenungsund is 7.7h.UV index
In Stenungsund, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Stenungsund, Sweden
- Average high temperature in September: 15.8°C
The warmest month (with the highest average high temperature) is July (19.8°C).
The months with the lowest average high temperature are January and February (1.5°C).
- Average low temperature in September: 11.1°C
The month with the highest average low temperature is August (13.5°C).
The coldest month (with the lowest average low temperature) is February (-1.8°C).
Average pressure in September
Stenungsund, Sweden
- Average pressure in September: 1013.5mbar
The month with the highest atmospheric pressure is April (1014.5mbar).
The month with the lowest atmospheric pressure is December (1008.5mbar).
Average wind speed in September
Stenungsund, Sweden
- Average wind speed in September: 16.7km/h
The windiest month (with the highest average wind speed) is December (19.2km/h).
The calmest month (with the lowest average wind speed) is June (14.3km/h).
Average humidity in September
Stenungsund, 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 (73%).
Average rainfall in September
Stenungsund, Sweden
- Average rainfall in September: 50mm
The wettest month (with the highest rainfall) is August (69mm).
The driest month (with the least rainfall) is April (23mm).
Average rainfall days in September
Stenungsund, Sweden
- Average rainfall days in September: 16.1 days
The month with the highest number of rainy days is August (18.6 days).
The month with the least rainy days is February (9.6 days).
Average snowfall in September
Stenungsund, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is January (58mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Stenungsund, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Stenungsund, Sweden
- Average sea temperature in September: 16°C
The best month for swimming (with the highest average sea temperature) is August (18.4°C).
The coldest month (with the lowest average sea temperature) is March (2.7°C).
Average daylight in September /
Average sunshine in September
Stenungsund, Sweden
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 6min).
The month with the shortest days is December (Average daylight: 6h and 36min).
- Average sunshine in September: 7h and 42min
The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).
Average sunshine days in September
Stenungsund, Sweden
- Average sunshine days in September: 11.5 days
The month with the most sunshine days is April (16.3 days).
The month with the least sunshine days is December (10.1 days).
Average UV index in September
Stenungsund, Sweden
- Average UV index in September: 4
The months with the highest UV index are May and June (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Stenungsund, Sweden
- Average cloud cover in September: 47
The month with the most cloud cover is February (Cloud cover 65).
The months with the least cloud cover are June and July (Cloud cover 39).
Average visibility in September
Stenungsund, Sweden
- 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).
