September weather forecastÖsmo, Sweden
September
Weather in September
September, the first month of the autumn in Ösmo, is still a mild month, with temperature in the range of an average low of 11.4°C (52.5°F) and an average high of 15.4°C (59.7°F).Temperature
In the transition to September, Ösmo observes a minor drop in the average high-temperature, shifting from a comfortable 19.3°C (66.7°F) in August to a still refreshing 15.4°C (59.7°F). Registering an almost steady temperature, Ösmo's nights in September see an average low of 11.4°C (52.5°F).Humidity
The average relative humidity in September in Ösmo, Sweden, is 79%.Rainfall
In September, the rain falls for 12.5 days. Throughout September, 28mm (1.1") of precipitation is accumulated. In Ösmo, during the entire year, the rain falls for 138.3 days and collects up to 361mm (14.21") of precipitation.Snowfall
In Ösmo, snow does not fall in June through September.Daylight
The average length of the day in September in Ösmo is 12h and 50min.On the first day of the month, sunrise is at 05:47 and sunset at 19:49. On the last day of September, in Ösmo, sunrise is at 06:52 and sunset at 18:24 CEST.
Sunshine
The average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 3 during September translates into the following guidance:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ösmo, Sweden
- Average high temperature in September: 15.4°C
The warmest month (with the highest average high temperature) is July (19.5°C).
The month with the lowest average high temperature is January (0.7°C).
- Average low temperature in September: 11.4°C
The month with the highest average low temperature is July (14.4°C).
The coldest month (with the lowest average low temperature) is January (-2°C).
Average pressure in September
Ösmo, Sweden
- Average pressure in September: 1013.6mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1008.3mbar).
Average wind speed in September
Ösmo, Sweden
- Average wind speed in September: 18.6km/h
The windiest month (with the highest average wind speed) is December (24.1km/h).
The calmest month (with the lowest average wind speed) is July (16km/h).
Average humidity in September
Ösmo, Sweden
- Average humidity in September: 79%
The months with the highest relative humidity are January, February, November and December (85%).
The month with the lowest relative humidity is May (75%).
Average rainfall in September
Ösmo, Sweden
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is July (42mm).
The driest month (with the least rainfall) is April (16mm).
Average rainfall days in September
Ösmo, Sweden
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is August (14.8 days).
The month with the least rainy days is February (5.7 days).
Average snowfall in September
Ösmo, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (70mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Ösmo, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Ösmo, Sweden
- 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: 8h and 24min
The month with the most sunshine is June (Average sunshine: 12h and 30min).
The month with the least sunshine is December (Average sunshine: 2h and 24min).
Average sunshine days in September
Ösmo, Sweden
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is April (17 days).
The month with the least sunshine days is December (12.1 days).
Average UV index in September
Ösmo, 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
Ösmo, Sweden
- Average cloud cover in September: 40
The months with the most cloud cover are January, February and December (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in September
Ösmo, 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).
