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 sea temperature 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
A moderate decline in average high-temperatures is noted in September, moving from a refreshing 16.5°C in August to a fresh 12.2°C. Kemi's average nighttime temperature in September modestly descends to a frosty 8.4°C.Humidity
In Kemi, the average relative humidity in September is 82%.Rainfall
In Kemi, in September, during 14.6 rainfall days, 44mm of precipitation is typically accumulated. Throughout the year, there are 127 rainfall days, and 472mm of precipitation is accumulated.Snowfall
In Kemi, snow does not fall in July through September.Sea temperature
In Kemi, in September, the average water temperature is 12.8°C.Note: Navigating the 12.8°C at 13°C is no joy, and temperatures less than 10°C can threaten breathing and cause a chilling shock, gauging personal stamina.
Daylight
In Kemi, the average length of the day in September is 13h and 6min.On the first day of September, sunrise is at 05:57 and sunset at 20:46. On the last day of the month, sunrise is at 07:28 and sunset at 18:55 EEST.
Sunshine
The average sunshine in September in Kemi is 7.1h.UV index
In Kemi, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 3 suggests these recommendations:
Adopt protective measures - It is advised to guard against sun damage. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
FAQ
What is the usual temperature for Kemi in September?
What is the average humidity in September in Kemi?
How much does it rain in Kemi in September?
When it does not snow in Kemi?
Does it snow in Kemi in September?
How cold is the water in September in Kemi?
How many hours of daylight does Kemi have in September?
When is the sunrise / sunset in September in Kemi?
How long on average sun shines in September in Kemi?
How high is the UV index in September in Kemi?
Average temperature in September
Kemi, Finland
- Average high temperature in September: 12.2°C
The warmest month (with the highest average high temperature) is July (17.8°C).
The month with the lowest average high temperature is January (-6.3°C).
- Average low temperature in September: 8.4°C
The month with the highest average low temperature is July (12.6°C).
The coldest month (with the lowest average low temperature) is January (-10.7°C).
Average pressure in September
Kemi, Finland
- Average pressure in September: 1011mbar
The month with the highest atmospheric pressure is May (1013.9mbar).
The month with the lowest atmospheric pressure is December (1004.9mbar).
Average wind speed in September
Kemi, Finland
- Average wind speed in September: 16.5km/h
The windiest month (with the highest average wind speed) is November (17.7km/h).
The calmest month (with the lowest average wind speed) is April (12.4km/h).
Average humidity in September
Kemi, Finland
- Average humidity in September: 82%
The months with the highest relative humidity are January and February (94%).
The month with the lowest relative humidity is June (71%).
Average rainfall in September
Kemi, Finland
- Average rainfall in September: 44mm
The wettest month (with the highest rainfall) is August (53mm).
The driest month (with the least rainfall) is April (28mm).
Average rainfall days in September
Kemi, Finland
- Average rainfall days in September: 14.6 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in September
Kemi, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is March (228mm).
The months with the least snowfall are July, August and September (0mm).
Average snowfall days in September
Kemi, Finland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.8 days).
The months with the least snowfall days are July, August and September (0 days).
Average sea temperature in September
Kemi, Finland
- Average sea temperature in September: 12.8°C
The best month for swimming (with the highest average sea temperature) is July (16.8°C).
The coldest months (with the lowest average sea temperature) are January and February (-0.7°C).
Average daylight in September /
Average sunshine in September
Kemi, Finland
- Average daylight in September: 13h and 1min
The month with the longest days is July (Average daylight: 20h and 36min).
The month with the shortest days is December (Average daylight: 3h and 24min).
- Average sunshine in September: 7h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 18min).
The month with the least sunshine is December (Average sunshine: 1h and 6min).
Average sunshine days in September
Kemi, Finland
- Average sunshine days in September: 12.6 days
The month with the most sunshine days is October (13.9 days).
The month with the least sunshine days is December (9.9 days).
Average UV index in September
Kemi, Finland
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, March, October and December (UV index 1).
Average cloud cover in September
Kemi, Finland
- Average cloud cover in September: 52
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is July (Cloud cover 40).
Average visibility in September
Kemi, Finland
- Average visibility in September: 9km
The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January, February, March and April (7km).
Kemi, Finland
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