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
The shift from August to September involves a decrease in the average high-temperature, from an enjoyable 16.3°C (61.3°F) to a fresh 10.6°C (51.1°F). An average nighttime temperature of 4.3°C (39.7°F) is noted during the month of September.Humidity
In Oulanka, the average relative humidity in September is 87%.Rainfall
In Oulanka, in September, during 15.8 rainfall days, 40mm (1.57") of precipitation is typically accumulated. In Oulanka, during the entire year, the rain falls for 120.6 days and collects up to 464mm (18.27") of precipitation.Snowfall
January through June, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 1.2 snowfall days, it receives 9mm (0.35") of snow. Throughout the year, there are 157.8 snowfall days, and 1631mm (64.21") of snow is accumulated.Daylight
The average length of the day in September is 13h and 8min.On the first day of the month, sunrise is at 05:38 and sunset at 20:28. On the last day of September, sunrise is at 07:13 and sunset at 18:33 EEST.
Sunshine
In Oulanka, the average sunshine in September is 5.3h.UV index
In September, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index, 2 in September, converts into the following recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Oulanka in September?
What is the average humidity in September?
How many days does it rain in September?
When does it start to snow?
How many hours of daylight does Oulanka have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Oulanka, Finland
- Average high temperature in September: 10.6°C
The warmest month (with the highest average high temperature) is July (18.8°C).
The month with the lowest average high temperature is January (-9°C).
- Average low temperature in September: 4.3°C
The month with the highest average low temperature is July (10.3°C).
The coldest month (with the lowest average low temperature) is January (-14.6°C).
Average pressure in September
Oulanka, Finland
- Average pressure in September: 1011mbar
The month with the highest atmospheric pressure is May (1014.4mbar).
The month with the lowest atmospheric pressure is December (1005.7mbar).
Average wind speed in September
Oulanka, Finland
- Average wind speed in September: 10.7km/h
The windiest month (with the highest average wind speed) is March (11.4km/h).
The calmest month (with the lowest average wind speed) is July (10km/h).
Average humidity in September
Oulanka, Finland
- Average humidity in September: 87%
The months with the highest relative humidity are January and February (97%).
The month with the lowest relative humidity is June (69%).
Average rainfall in September
Oulanka, Finland
- Average rainfall in September: 40mm
The wettest month (with the highest rainfall) is July (57mm).
The driest month (with the least rainfall) is January (30mm).
Average rainfall days in September
Oulanka, Finland
- Average rainfall days in September: 15.8 days
The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is February (1.3 days).
Average snowfall in September
Oulanka, Finland
- Average snowfall in September: 9mm
The month with the highest snowfall is December (263mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Oulanka, Finland
- Average snowfall days in September: 1.2 days
The month with the highest number of snowfall days is December (24 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Oulanka, Finland
- Average daylight in September: 13h and 1min
The month with the longest days is May (Average daylight: 19h and 36min).
The month with the shortest days is December (Average daylight: 2h and 42min).
- Average sunshine in September: 5h and 2min
The month with the most sunshine is August (Average sunshine: 8h and 24min).
The month with the least sunshine is December (Average sunshine: 0h and 36min).
Average sunshine days in September
Oulanka, Finland
- Average sunshine days in September: 10.2 days
The month with the most sunshine days is August (10.7 days).
The month with the least sunshine days is April (4.4 days).
Average UV index in September
Oulanka, Finland
- Average UV index in September: 2
The months with the highest UV index are June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).
Average cloud cover in September
Oulanka, Finland
- Average cloud cover in September: 67
The months with the most cloud cover are January and December (Cloud cover 82).
The month with the least cloud cover is July (Cloud cover 51).
Average visibility in September
Oulanka, Finland
- Average visibility in September: 7km
The months with the highest visibility are June and July (9km).
The month with the lowest visibility is January (4km).
