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 decreases from a refreshing 16.5°C (61.7°F) in August to a fresh 11.2°C (52.2°F). Nighttime temperature dips to a mean of 4.6°C (40.3°F) during September.Humidity
In September, the average relative humidity is 86%.Rainfall
In September, the rain falls for 15.2 days. Throughout September, 37mm (1.46") of precipitation is accumulated. Throughout the year, there are 123 rainfall days, and 435mm (17.13") 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 0.7 snowfall days, it receives 10mm (0.39") of snow. In Kemijärvi, during the entire year, snow falls for 148.9 days and aggregates up to 1462mm (57.56") of snow.Daylight
In Kemijärvi, the average length of the day in September is 13h and 9min.On the first day of September in Kemijärvi, sunrise is at 05:44 and sunset at 20:35. On the last day of the month, sunrise is at 07:20 and sunset at 18:40 EEST.
Sunshine
In Kemijärvi, Finland, the average sunshine in September is 4.5h.UV index
The average daily maximum UV index in September in Kemijärvi is 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.Note: The UV index of 2 in September translates into these instructions:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. To protect against the Sun's most potent rays, avoid direct exposure around midday. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Kemijärvi?
What is the average humidity in September in Kemijärvi?
How much does it rain in Kemijärvi in September?
When does it start snowing in Kemijärvi?
What is the average length of the day in September in Kemijärvi?
When is the sunrise / sunset in September in Kemijärvi?
How many hours of sunshine does Kemijärvi have in September?
What is the UV index intensity in September in Kemijärvi?
Average temperature in September
Kemijärvi, Finland
- Average high temperature in September: 11.2°C
The warmest month (with the highest average high temperature) is July (19.2°C).
The month with the lowest average high temperature is January (-8.4°C).
- Average low temperature in September: 4.6°C
The month with the highest average low temperature is July (10.1°C).
The coldest month (with the lowest average low temperature) is January (-14.2°C).
Average pressure in September
Kemijärvi, Finland
- Average pressure in September: 1011.2mbar
The month with the highest atmospheric pressure is May (1014.3mbar).
The month with the lowest atmospheric pressure is December (1005.5mbar).
Average wind speed in September
Kemijärvi, Finland
- Average wind speed in September: 10.7km/h
The windiest month (with the highest average wind speed) is March (11.6km/h).
The calmest month (with the lowest average wind speed) is July (10km/h).
Average humidity in September
Kemijärvi, Finland
- Average humidity in September: 86%
The months with the highest relative humidity are January, February and December (96%).
The month with the lowest relative humidity is June (69%).
Average rainfall in September
Kemijärvi, Finland
- Average rainfall in September: 37mm
The wettest month (with the highest rainfall) is July (51mm).
The driest month (with the least rainfall) is April (28mm).
Average rainfall days in September
Kemijärvi, Finland
- Average rainfall days in September: 15.2 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is February (2 days).
Average snowfall in September
Kemijärvi, Finland
- Average snowfall in September: 10mm
The month with the highest snowfall is March (244mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Kemijärvi, Finland
- Average snowfall days in September: 0.7 days
The month with the highest number of snowfall days is December (23.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Kemijärvi, Finland
- Average daylight in September: 13h and 1min
The month with the longest days is May (Average daylight: 19h and 48min).
The month with the shortest days is June (Average daylight: 2h and 18min).
- Average sunshine in September: 4h and 3min
The month with the most sunshine is July (Average sunshine: 8h and 42min).
The month with the least sunshine is December (Average sunshine: 0h and 48min).
Average sunshine days in September
Kemijärvi, Finland
- Average sunshine days in September: 10.9 days
The month with the most sunshine days is October (12.5 days).
The month with the least sunshine days is April (4.9 days).
Average UV index in September
Kemijärvi, Finland
- Average UV index in September: 2
The months with the highest UV index are 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
Kemijärvi, Finland
- Average cloud cover in September: 67
The month with the most cloud cover is January (Cloud cover 81).
The month with the least cloud cover is July (Cloud cover 50).
Average visibility in September
Kemijärvi, Finland
- Average visibility in September: 7km
The months with the highest visibility are June and July (9km).
The months with the lowest visibility are January, February, March, April and December (5km).
