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
Weather in September
Temperature
With September's arrival, Kolari sees a decrease in average high-temperatures, moving from a refreshing 16.8°C (62.2°F) in August to a cool 11.3°C (52.3°F). Throughout September, the temperature falls to an average low of 4.5°C (40.1°F).Humidity
The average relative humidity in September is 85%.Rainfall
In Kolari, during September, the rain falls for 14.6 days and regularly aggregates up to 41mm (1.61") of precipitation. In Kolari, during the entire year, the rain falls for 114.1 days and collects up to 412mm (16.22") 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 0.5 snowfall days, it receives 6mm (0.24") of snow. Throughout the year, there are 132.2 snowfall days, and 1307mm (51.46") of snow is accumulated.Daylight
In Kolari, the average length of the day in September is 13h and 11min.On the first day of September, sunrise is at 05:56 and sunset at 20:53. On the last day of the month, sunrise is at 07:35 and sunset at 18:53 EEST.
Sunshine
In September, the average sunshine is 6h.UV index
The average daily maximum UV index in September in Kolari, Finland, is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: An average maximum UV index of 2 in September leads to these recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. It's recommended to limit sun exposure when its radiation is at its peak during midday. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How much does it rain in September?
When does it start to snow?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Kolari have in September?
What is the UV index reading in September in Kolari?
Average temperature in September
Kolari, Finland
- Average high temperature in September: 11.3°C
The warmest month (with the highest average high temperature) is July (19°C).
The month with the lowest average high temperature is January (-8.9°C).
- Average low temperature in September: 4.5°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
Kolari, Finland
- Average pressure in September: 1010.6mbar
The month with the highest atmospheric pressure is May (1014.2mbar).
The month with the lowest atmospheric pressure is December (1004.7mbar).
Average wind speed in September
Kolari, Finland
- Average wind speed in September: 9.8km/h
The windiest month (with the highest average wind speed) is March (10.8km/h).
The calmest month (with the lowest average wind speed) is April (9.2km/h).
Average humidity in September
Kolari, Finland
- Average humidity in September: 85%
The months with the highest relative humidity are January and February (96%).
The month with the lowest relative humidity is June (66%).
Average rainfall in September
Kolari, Finland
- Average rainfall in September: 41mm
The wettest month (with the highest rainfall) is July (53mm).
The driest month (with the least rainfall) is April (22mm).
Average rainfall days in September
Kolari, Finland
- Average rainfall days in September: 14.6 days
The months with the highest number of rainy days are June and August (15.7 days).
The month with the least rainy days is February (2.6 days).
Average snowfall in September
Kolari, Finland
- Average snowfall in September: 6mm
The month with the highest snowfall is December (259mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Kolari, Finland
- Average snowfall days in September: 0.5 days
The month with the highest number of snowfall days is December (22.6 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Kolari, Finland
- Average daylight in September: 13h and 1min
The month with the longest days is May (Average daylight: 19h and 30min).
The month with the shortest days is June (Average daylight: 0h and 0min).
- Average sunshine in September: 6h and 0min
The month with the most sunshine is August (Average sunshine: 8h and 54min).
The month with the least sunshine is June (Average sunshine: 0h and 36min).
Average sunshine days in September
Kolari, Finland
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is October (14.1 days).
The months with the least sunshine days are April and December (9.1 days).
Average UV index in September
Kolari, Finland
- Average UV index in September: 2
The months with the highest UV index are May, June and July (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
Kolari, Finland
- Average cloud cover in September: 61
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 50).
Average visibility in September
Kolari, Finland
- Average visibility in September: 8km
The months with the highest visibility are June, July and August (9km).
The months with the lowest visibility are January, February, March, April and December (5km).
Kolari, Finland
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