September weather forecastÖregrund, Sweden
September
Weather in September
September, the first month of the autumn in Öregrund, is still a mild month, with an average temperature ranging between max 15.2°C (59.4°F) and min 10.8°C (51.4°F).Temperature
The arrival of September suggests a slight decrease in the average high-temperature, moving from a comfortable 19.6°C (67.3°F) in August to a moderate 15.2°C (59.4°F). Nighttime in Öregrund, during September, brings an average low of 10.8°C (51.4°F), a modest reduction from the day's peak.Humidity
In Öregrund, Sweden, the average relative humidity in September is 79%.Rainfall
In Öregrund, in September, during 13.5 rainfall days, 24mm (0.94") of precipitation is typically accumulated. Throughout the year, in Öregrund, there are 136.5 rainfall days, and 345mm (13.58") of precipitation is accumulated.Snowfall
In Öregrund, Sweden, snow does not fall in June through September.Sea temperature
In Öregrund, in September, the average water temperature is 14°C (57.2°F).Note: While a brief time in 14°C (57.2°F) at 13°C (55.4°F) is already bracing, plunging below 10°C (50°F) can severely affect breathing and introduce a cold shock, relying on your physical state.
Daylight
In September, the average length of the day in Öregrund is 12h and 52min.On the first day of September, sunrise is at 05:41 and sunset at 19:50. On the last day of the month, sunrise is at 06:50 and sunset at 18:21 CEST.
Sunshine
The average sunshine in September is 8.3h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 3 during September translates into the following recommendations:
Make use of precautions - It is urged to ward off sun damage. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Öregrund, Sweden
- Average high temperature in September: 15.2°C
The warmest month (with the highest average high temperature) is July (19.7°C).
The months with the lowest average high temperature are January and February (-0.1°C).
- Average low temperature in September: 10.8°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is February (-2.9°C).
Average pressure in September
Öregrund, Sweden
- Average pressure in September: 1012.9mbar
The month with the highest atmospheric pressure is May (1014.7mbar).
The month with the lowest atmospheric pressure is December (1007.1mbar).
Average wind speed in September
Öregrund, Sweden
- Average wind speed in September: 16.6km/h
The windiest month (with the highest average wind speed) is December (20.3km/h).
The calmest month (with the lowest average wind speed) is July (14.2km/h).
Average humidity in September
Öregrund, Sweden
- Average humidity in September: 79%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are May and June (74%).
Average rainfall in September
Öregrund, Sweden
- Average rainfall in September: 24mm
The wettest month (with the highest rainfall) is July (52mm).
The driest months (with the least rainfall) are February and April (16mm).
Average rainfall days in September
Öregrund, Sweden
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is August (16.5 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in September
Öregrund, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is March (78mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Öregrund, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Öregrund, Sweden
- Average sea temperature in September: 14°C
The best month for swimming (with the highest average sea temperature) is August (18.2°C).
The coldest month (with the lowest average sea temperature) is February (0.1°C).
Average daylight in September /
Average sunshine in September
Öregrund, Sweden
- Average daylight in September: 12h and 54min
The month with the longest days is June (Average daylight: 18h and 48min).
The month with the shortest days is December (Average daylight: 5h and 54min).
- Average sunshine in September: 8h and 18min
The month with the most sunshine is June (Average sunshine: 12h and 42min).
The month with the least sunshine is December (Average sunshine: 2h and 30min).
Average sunshine days in September
Öregrund, Sweden
- Average sunshine days in September: 14 days
The month with the most sunshine days is April (15.8 days).
The month with the least sunshine days is December (11.6 days).
Average UV index in September
Öregrund, Sweden
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in September
Öregrund, Sweden
- Average cloud cover in September: 42
The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in September
Öregrund, Sweden
- Average visibility in September: 10km
The months with the highest visibility are June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, April, May, November and December (9km).
