Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
In September, the average high-temperature marginally drops from an enjoyable 18.2°C (64.8°F) in August to a moderate 13.3°C (55.9°F). During September, Ostvik records an average temperature of 7.4°C (45.3°F) at night.Humidity
The average relative humidity in September is 79%.Rainfall
In Ostvik, in September, it is raining for 10.8 days, with typically 20mm (0.79") of accumulated precipitation. In Ostvik, during the entire year, the rain falls for 99.9 days and collects up to 252mm (9.92") of precipitation.Snowfall
In Ostvik, snow does not fall in June through September.Daylight
In September, the average length of the day is 13h and 4min.On the first day of September, sunrise is at 05:17 and sunset at 19:54. On the last day of the month, sunrise is at 06:43 and sunset at 18:07 CEST.
Sunshine
The average sunshine in September is 7.6h.UV index
In Ostvik, the average daily maximum UV index in September 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 ordinary individuals.Note: A maximum UV index of 3 in September translates into the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Ostvik have in September?
What is the UV index reading in September?
Average temperature in September
Ostvik, Sweden
- Average high temperature in September: 13.3°C
The warmest month (with the highest average high temperature) is July (19.4°C).
The month with the lowest average high temperature is January (-4.8°C).
- Average low temperature in September: 7.4°C
The month with the highest average low temperature is July (12°C).
The coldest month (with the lowest average low temperature) is February (-9.3°C).
Average pressure in September
Ostvik, Sweden
- Average pressure in September: 1011.2mbar
The month with the highest atmospheric pressure is May (1014.1mbar).
The month with the lowest atmospheric pressure is December (1005mbar).
Average wind speed in September
Ostvik, Sweden
- Average wind speed in September: 12.6km/h
The windiest month (with the highest average wind speed) is December (14.6km/h).
The calmest month (with the lowest average wind speed) is July (11.2km/h).
Average humidity in September
Ostvik, Sweden
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is June (65%).
Average rainfall in September
Ostvik, Sweden
- Average rainfall in September: 20mm
The wettest month (with the highest rainfall) is July (30mm).
The driest month (with the least rainfall) is February (14mm).
Average rainfall days in September
Ostvik, Sweden
- Average rainfall days in September: 10.8 days
The month with the highest number of rainy days is July (11.9 days).
The month with the least rainy days is January (3 days).
Average snowfall in September
Ostvik, Sweden
- Average snowfall in September: 0mm
The months with the highest snowfall are January and March (107mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Ostvik, Sweden
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (15.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Ostvik, Sweden
- Average daylight in September: 13h and 1min
The month with the longest days is June (Average daylight: 21h and 30min).
The month with the shortest days is December (Average daylight: 4h and 0min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 48min).
The month with the least sunshine is December (Average sunshine: 1h and 24min).
Average sunshine days in September
Ostvik, Sweden
- Average sunshine days in September: 17.1 days
The months with the most sunshine days are June and October (17.8 days).
The month with the least sunshine days is December (12.9 days).
Average UV index in September
Ostvik, 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, February, November and December (UV index 1).
Average cloud cover in September
Ostvik, Sweden
- Average cloud cover in September: 46
The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 40).
Average visibility in September
Ostvik, Sweden
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February and March (7km).
