September weather forecastStrömma, Sweden
September
Weather in September
September, the first month of the autumn in Strömma, is also a moderate month, with an average temperature ranging between max 15.1°C (59.2°F) and min 11.5°C (52.7°F).Temperature
With September's onset, the weather reveals a slight temperature decrease, transitioning from a comfortable 18.7°C (65.7°F) in August to a still refreshing 15.1°C (59.2°F). Throughout September nights, Strömma records a consistent low-temperature averaging a cool 11.5°C (52.7°F).Humidity
In Strömma, the average relative humidity in September is 80%.Rainfall
In September, the rain falls for 11.6 days. Throughout September, 21mm (0.83") of precipitation is accumulated. Throughout the year, there are 125.3 rainfall days, and 261mm (10.28") of precipitation is accumulated.Snowfall
In Strömma, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 50min.On the first day of September in Strömma, sunrise is at 05:43 and sunset at 19:47. On the last day of the month, sunrise is at 06:49 and sunset at 18:21 CEST.
Sunshine
In September, the average sunshine is 8.3h.UV index
In September, the average daily maximum UV index in Strömma, Sweden, is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 3 suggests these recommendations:
Heed the precautions - It is counselled to guard against solar damage. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Strömma, Sweden
- Average high temperature in September: 15.1°C
The warmest month (with the highest average high temperature) is July (18.9°C).
The months with the lowest average high temperature are January and February (0.4°C).
- Average low temperature in September: 11.5°C
The month with the highest average low temperature is August (14.8°C).
The coldest month (with the lowest average low temperature) is January (-2.2°C).
Average pressure in September
Strömma, Sweden
- Average pressure in September: 1013.4mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1007.8mbar).
Average wind speed in September
Strömma, Sweden
- Average wind speed in September: 18.9km/h
The windiest month (with the highest average wind speed) is December (24.7km/h).
The calmest month (with the lowest average wind speed) is July (15.8km/h).
Average humidity in September
Strömma, Sweden
- Average humidity in September: 80%
The months with the highest relative humidity are January, February, November and December (85%).
The months with the lowest relative humidity are April, May and June (77%).
Average rainfall in September
Strömma, Sweden
- Average rainfall in September: 21mm
The wettest month (with the highest rainfall) is July (35mm).
The driest month (with the least rainfall) is April (10mm).
Average rainfall days in September
Strömma, Sweden
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is August (13.9 days).
The month with the least rainy days is February (5.4 days).
Average snowfall in September
Strömma, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is December (41mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Strömma, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Strömma, Sweden
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 18min).
- Average sunshine in September: 8h and 18min
The month with the most sunshine is June (Average sunshine: 12h and 36min).
The month with the least sunshine is December (Average sunshine: 2h and 30min).
Average sunshine days in September
Strömma, Sweden
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is May (17.9 days).
The month with the least sunshine days is December (11.7 days).
Average UV index in September
Strömma, Sweden
- 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
Strömma, Sweden
- Average cloud cover in September: 40
The months with the most cloud cover are January and February (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Strömma, Sweden
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, November and December (9km).
