September weather forecast
Kemi, Finland

Weather in September

The first month of the autumn, September, is still a cool month in Kemi, Finland, with an average temperature varying between 8.4°C (47.1°F) and 12.2°C (54°F).

Temperature

In Kemi, the average high-temperature in September slightly decreases from a comfortable 16.5°C (61.7°F) in August to a cool 12.2°C (54°F). In Kemi, in September, the average low-temperature is 8.4°C (47.1°F).

Humidity

In September, the average relative humidity in Kemi is 82%.

Rainfall

In Kemi, in September, during 14.6 rainfall days, 44mm (1.73") of precipitation is typically accumulated. In Kemi, during the entire year, the rain falls for 127 days and collects up to 472mm (18.58") of precipitation.

Snowfall

In Kemi, snow does not fall in July through September.

Sea temperature

In September, the average sea temperature is 12.8°C (55°F).
Note: Swimming in 12.8°C (55°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

In September, the average length of the day in Kemi is 13h and 6min.
On the first day of the month, sunrise is at 05:58 and sunset at 20:45. On the last day of September, in Kemi, sunrise is at 07:29 and sunset at 18:54 EEST.

Sunshine

In September, the average sunshine is 7.1h.

UV index

In September, the average daily maximum UV index in Kemi is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.
Note: In September, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the average humidity in September in Kemi?

In Kemi, the average relative humidity in September is 82%.

How many days does it rain in September in Kemi?

In Kemi, Finland, during September, the rain falls for 14.6 days and regularly aggregates up to 44mm (1.73") of precipitation.

When it does not snow in Kemi?

In Kemi, Finland, snow does not fall in July through September.

Does it snow in Kemi in September?

In Kemi, in September, it doesn't snow. In October, it regularly snows.

What is the sea water temperature in September in Kemi?

In September, the average sea temperature in Kemi, Finland, is 12.8°C (55°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

How many hours of daylight does Kemi have in September?

In Kemi, the average day length in September is 13h and 6min.

When is the sunrise / sunset in September in Kemi?

In September, on the first day of the month, sunrise is at 05:58 and sunset at 20:45. On the last day of the month, in Kemi, Finland, sunrise is at 07:29 and sunset at 18:54 EEST.

How many hours of sunshine does Kemi have in September?

In Kemi, Finland, the average sunshine duration in September is 7.1h.

What is the UV index intensity in September in Kemi?

In Kemi, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in September
Kemi, Finland

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).

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Average pressure in September
Kemi, Finland

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).

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Average wind speed in September
Kemi, Finland

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).

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Average humidity in September
Kemi, Finland

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%).

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Average rainfall in September
Kemi, Finland

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).

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Average rainfall days in September
Kemi, Finland

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).

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Average snowfall in September
Kemi, Finland

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).

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Average snowfall days in September
Kemi, Finland

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).

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Average sea temperature in September
Kemi, Finland

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).

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Average daylight in September /
Average sunshine in September
Kemi, Finland

Average daylight in September / Average sunshine in September - Kemi, Finland
  • Average daylight in September: 13h and 6min

The month with the longest days is July (Average daylight: 20h and 39min).
The month with the shortest days is December (Average daylight: 3h and 23min).

  • Average sunshine in September: 7h and 6min

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).

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Average sunshine days in September
Kemi, Finland

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).

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Average UV index in September
Kemi, Finland

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).

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Average cloud cover in September
Kemi, Finland

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).

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Average visibility in September
Kemi, Finland

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).

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