December weather forecast
Keminmaa, Finland

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Weather in December

Unarguably the coldest month, December displays the height of winter weather in Keminmaa. Underneath the twinkling holiday lights, the city becomes a winter wonderland, complete with significant snowfall, more so than November. The demand for warm clothing hits its annual peak due to the sub-zero temperatures. The limited daylight hours, the lowest across all months, add further to the city's winter charm. Despite the cold conditions, Keminmaa welcomes the New Year with cheer and promises of a milder January.

Temperature

In December, the meteorological conditions change slightly, with the average high-temperature moving from a wintry 1.3°C in November to a subzero cold -2.6°C. During December, Keminmaa's nighttime temperatures demonstrate a subtle cooling from daytime highs, stabilizing at a still freezing cold -6°C.

Humidity

The average relative humidity in December is 91%.

Rainfall

In December, in Keminmaa, the rain falls for 6.2 days. Throughout December, 47mm of precipitation is accumulated. In Keminmaa, during the entire year, the rain falls for 127 days and collects up to 472mm of precipitation.

Snowfall

January through June, October through December are months with snowfall in Keminmaa, Finland. In December, in Keminmaa, it is snowing for 18 days. Throughout December, 196mm of snow is accumulated. In Keminmaa, during the entire year, snow falls for 98.7 days and aggregates up to 1035mm of snow.

Sea temperature

In December, the average sea temperature in Keminmaa is 1.9°C.
Note: During swimming activities, this is a serious life-threatening hazard. Rapid loss of control over breathing impairs cognitive abilities. A specialized swimsuit is essential to limit thermal wastage.

Daylight

With an average of 3h and 18min of daylight, December has the shortest days of the year in Keminmaa.
On the first day of the month, sunrise is at 10:03 and sunset at 14:17. On the last day of December, sunrise is at 10:46 and sunset at 14:02 EET.

Sunshine

The month with the least sunshine is December, with an average of 1.1h of sunshine.

UV index

January, March, October and December, with an average maximum UV index of 1, are months with the lowest UV index in Keminmaa. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for average individuals.
Note: A maximum high UV index of 1 in December translates into the following recommendations:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
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FAQ

How cold is December in Keminmaa?

The average high-temperature, in December, in Keminmaa, is -2.6°C, while the average low-temperature is -6°C.

What is the average humidity in December in Keminmaa?

The average relative humidity in December in Keminmaa is 91%.

How many days does it rain in December in Keminmaa?

In Keminmaa, in December, it is raining for 6.2 days, with typically 47mm of accumulated precipitation.

How many days does it snow in December in Keminmaa?

In December, it is snowing for 18 days. Throughout December, 196mm of snow is accumulated.

How cold is the water in December in Keminmaa?

In December, the average sea temperature is 1.9°C. For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

What is the month with the shortest days in Keminmaa?

The month with the shortest days in Keminmaa, Finland, is December, with an average of 3h and 18min of daylight.

How many hours of daylight does Keminmaa have in December?

In December, the average day length in Keminmaa is 3h and 20min.

What time are sunrise and sunset in December in Keminmaa?

In December, on the first day of the month, sunrise is at 10:03 and sunset at 14:17. On the last day of the month, sunrise is at 10:46 and sunset at 14:02 EET.

What is the month with the least sunshine in Keminmaa?

December has the least sunshine of the year in Keminmaa, with an average of 1.1h of sunshine.

How many hours of sunshine does Keminmaa have in December?

In Keminmaa, Finland, the average sunshine duration in December is 1.1h.

What is the month with the lowest UV index in Keminmaa?

The months with the lowest UV index in Keminmaa, Finland, are January, March, October and December, with an average maximum UV index of 1.

How high is the UV index in December in Keminmaa?

In December, the average daily maximum UV index in Keminmaa, Finland, is 1. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Keminmaa, Finland

Average temperature in December - Keminmaa, Finland
  • Average high temperature in December: -2.6°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 December: -6°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 December
Keminmaa, Finland

Average pressure in December - Keminmaa, Finland
  • Average pressure in December: 1004.9mbar

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 December
Keminmaa, Finland

Average wind speed in December - Keminmaa, Finland
  • Average wind speed in December: 17.2km/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 December
Keminmaa, Finland

Average humidity in December - Keminmaa, Finland
  • Average humidity in December: 91%

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 December
Keminmaa, Finland

Average rainfall in December - Keminmaa, Finland
  • Average rainfall in December: 47mm

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 December
Keminmaa, Finland

Average rainfall days in December - Keminmaa, Finland
  • Average rainfall days in December: 6.2 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 December
Keminmaa, Finland

Average snowfall in December - Keminmaa, Finland
  • Average snowfall in December: 196mm

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 December
Keminmaa, Finland

Average snowfall days in December - Keminmaa, Finland
  • Average snowfall days in December: 18 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 December
Keminmaa, Finland

Average sea temperature in December - Keminmaa, Finland
  • Average sea temperature in December: 1.9°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 December /
Average sunshine in December
Keminmaa, Finland

Average daylight in December / Average sunshine in December - Keminmaa, Finland
  • Average daylight in December: 3h and 2min

The month with the longest days is July (Average daylight: 20h and 42min).
The month with the shortest days is December (Average daylight: 3h and 18min).

  • Average sunshine in December: 1h 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).

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Average sunshine days in December
Keminmaa, Finland

Average sunshine days in December - Keminmaa, Finland
  • Average sunshine days in December: 9.9 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 December
Keminmaa, Finland

Average UV index in December - Keminmaa, Finland
  • Average UV index in December: 1

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 December
Keminmaa, Finland

Average cloud cover in December - Keminmaa, Finland
  • Average cloud cover in December: 72

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 December
Keminmaa, Finland

Average visibility in December - Keminmaa, Finland
  • Average visibility in December: 8km

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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Keminmaa, Finland

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