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 arrival of September corresponds with a shift in temperature, down from a mild 14.3°C (57.7°F) in August to a chilly 9°C (48.2°F). In Vuontisjärvi, the average nighttime temperature during September is an icy 3.4°C (38.1°F).Humidity
In September, the average relative humidity is 84%.Rainfall
In Vuontisjärvi, during September, the rain falls for 13.7 days and regularly aggregates up to 30mm (1.18") of precipitation. Throughout the year, there are 114.7 rainfall days, and 403mm (15.87") of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 2.2 snowfall days, it receives 15mm (0.59") of snow. In Vuontisjärvi, during the entire year, snow falls for 151.2 days and aggregates up to 1073mm (42.24") of snow.Daylight
In Vuontisjärvi, the average length of the day in September is 13h and 15min.On the first day of September, sunrise is at 05:50 and sunset at 20:57. On the last day of the month, sunrise is at 07:35 and sunset at 18:51 EEST.
Sunshine
The average sunshine in September in Vuontisjärvi is 5.6h.UV index
The average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum UV index of 2 in September translates into the following recommendations:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Enhance your sun protection with tightly woven, yet airy clothing. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How many days does it rain in September?
When does it start snowing?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Vuontisjärvi, Finland
- Average high temperature in September: 9°C
The warmest month (with the highest average high temperature) is July (16.3°C).
The month with the lowest average high temperature is February (-9.6°C).
- Average low temperature in September: 3.4°C
The month with the highest average low temperature is July (9°C).
The coldest month (with the lowest average low temperature) is February (-15.5°C).
Average pressure in September
Vuontisjärvi, Finland
- Average pressure in September: 1010mbar
The month with the highest atmospheric pressure is May (1014.4mbar).
The month with the lowest atmospheric pressure is December (1003.5mbar).
Average wind speed in September
Vuontisjärvi, Finland
- Average wind speed in September: 15.2km/h
The windiest month (with the highest average wind speed) is March (17km/h).
The calmest month (with the lowest average wind speed) is April (13.6km/h).
Average humidity in September
Vuontisjärvi, Finland
- Average humidity in September: 84%
The months with the highest relative humidity are January and December (94%).
The month with the lowest relative humidity is June (67%).
Average rainfall in September
Vuontisjärvi, Finland
- Average rainfall in September: 30mm
The wettest month (with the highest rainfall) is July (52mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in September
Vuontisjärvi, Finland
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is July (20.1 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in September
Vuontisjärvi, Finland
- Average snowfall in September: 15mm
The month with the highest snowfall is December (178mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Vuontisjärvi, Finland
- Average snowfall days in September: 2.2 days
The month with the highest number of snowfall days is December (22.5 days).
The month with the least snowfall days is August (0 days).
Average daylight in September /
Average sunshine in September
Vuontisjärvi, Finland
- Average daylight in September: 13h and 1min
The month with the longest days is August (Average daylight: 17h and 30min).
The month with the shortest days is June (Average daylight: 0h and 0min).
- Average sunshine in September: 5h and 4min
The month with the most sunshine is August (Average sunshine: 8h and 6min).
The month with the least sunshine is December (Average sunshine: 0h and 18min).
Average sunshine days in September
Vuontisjärvi, Finland
- Average sunshine days in September: 12.2 days
The month with the most sunshine days is September (12.2 days).
The month with the least sunshine days is December (6.5 days).
Average UV index in September
Vuontisjärvi, Finland
- Average UV index in September: 2
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January, March, April, October, November and December (UV index 1).
Average cloud cover in September
Vuontisjärvi, Finland
- Average cloud cover in September: 62
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 56).
Average visibility in September
Vuontisjärvi, Finland
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The month with the lowest visibility is January (6km).
