December weather forecastKalajoki, Finland

December

Weather in December

December, the first month of the winter in Kalajoki, is still a freezing cold month, with temperature in the range of an average high of -0.8°C (30.6°F) and an average low of -3.5°C (25.7°F).

Temperature

The onset of December brings a small shift in high-temperatures, falling from a wintry 2.9°C (37.2°F) in November to a freezing cold -0.8°C (30.6°F). Kalajoki's nighttime average temperature in December drops marginally from the daytime highs, settling at a still subzero cold -3.5°C (25.7°F).

Humidity

The average relative humidity in December in Kalajoki is 89%.

Rainfall

In December, in Kalajoki, the rain falls for 6.2 days. Throughout December, 22mm (0.87") of precipitation is accumulated. In Kalajoki, during the entire year, the rain falls for 119.3 days and collects up to 288mm (11.34") of precipitation.

Snowfall

Months with snowfall are January through May, October through December. The months with the most snowfall are February and December, with an average 85mm (3.35") of accumulated snow.

Sea temperature

In Kalajoki, the average seawater temperature in December is 2.6°C (36.7°F).
Note: 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.

Daylight

The month with the shortest days in Kalajoki is December, with an average of 4h and 18min of daylight.
On the first day of the month, sunrise is at 09:44 and sunset at 14:42. On the last day of December, in Kalajoki, sunrise is at 10:17 and sunset at 14:36 EET.

Sunshine

The month with the least sunshine in Kalajoki is December, with an average of 1.2h of sunshine.

UV index

The months with the lowest UV index in Kalajoki are January, February, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.
Note: An average maximum UV index of 1 in December leads to these recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

Updated: Jan 31, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The average high-temperature, in December, in Kalajoki, is -0.8°C (30.6°F), while the average low-temperature is -3.5°C (25.7°F).

The average relative humidity in December in Kalajoki is 89%.

In Kalajoki, in December, it is raining for 6.2 days, with typically 22mm (0.87") of accumulated precipitation.

The months with the most snowfall in Kalajoki, Finland, are February and December, with an average 85mm (3.35") of accumulated snow.

In Kalajoki, Finland, in December, during 16 snowfall days, 85mm (3.35") of snow is typically accumulated.

In December, the average sea temperature in Kalajoki is 2.6°C (36.7°F). For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

December has the shortest days of the year in Kalajoki, Finland, with an average of 4h and 18min of daylight.

In Kalajoki, Finland, the average day length in December is 4h and 19min.

On the first day of December in Kalajoki, sunrise is at 09:44 and sunset at 14:42. On the last day of the month, sunrise is at 10:17 and sunset at 14:36 EET.

The month with the least sunshine is December, with an average of 1.2h of sunshine.

In December, the average sunshine duration in Kalajoki is 1.2h.

The months with the lowest UV index in Kalajoki are January, February, November and December, with an average maximum UV index of 1.

In December, the average daily maximum UV index in Kalajoki is 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

2.9°C

-0.8°C

-3.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

19.4km/h

20.1km/h

18.5km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

8.5

16.3

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

11.6

10.5

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Kalajoki, Finland

Average high temperature in December: -0.8°C

The warmest month (with the highest average high temperature) is July (18.2°C).
The month with the lowest average high temperature is January (-3.8°C).

Average low temperature in December: -3.5°C

The month with the highest average low temperature is July (12.9°C).
The coldest months (with the lowest average low temperature) are January and February (-7.3°C).

Average pressure in December
Kalajoki, Finland

Average pressure in December: 1005.5mbar

The month with the highest atmospheric pressure is May (1014.2mbar).
The month with the lowest atmospheric pressure is December (1005.5mbar).

Average wind speed in December
Kalajoki, Finland

Average wind speed in December: 19.2km/h

The windiest month (with the highest average wind speed) is December (19.2km/h).
The calmest month (with the lowest average wind speed) is July (13.2km/h).

Average humidity in December
Kalajoki, Finland

Average humidity in December: 89%

The month with the highest relative humidity is February (92%).
The month with the lowest relative humidity is June (72%).

Average rainfall in December
Kalajoki, Finland

Average rainfall in December: 22mm

The wettest month (with the highest rainfall) is August (39mm).
The driest month (with the least rainfall) is April (14mm).

Average rainfall days in December
Kalajoki, Finland

Average rainfall days in December: 6.2 days

The month with the highest number of rainy days is August (16.2 days).
The month with the least rainy days is February (3.6 days).

Average snowfall in December
Kalajoki, Finland

Average snowfall in December: 85mm

The months with the highest snowfall are February and December (85mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in December
Kalajoki, Finland

Average snowfall days in December: 16 days

The month with the highest number of snowfall days is January (16.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in December
Kalajoki, Finland

Average sea temperature in December: 2.6°C

The best month for swimming (with the highest average sea temperature) is August (16.3°C).
The coldest month (with the lowest average sea temperature) is April (-0.3°C).

Average daylight in December /
Average sunshine in December
Kalajoki, Finland

Average daylight in December: 4h and 18min

The month with the longest days is June (Average daylight: 21h and 0min).
The month with the shortest days is December (Average daylight: 4h and 18min).

Average sunshine in December: 1h and 12min

The month with the most sunshine is June (Average sunshine: 12h and 48min).
The month with the least sunshine is December (Average sunshine: 1h and 12min).

Average sunshine days in December
Kalajoki, Finland

Average sunshine days in December: 10.5 days

The month with the most sunshine days is May (17.5 days).
The month with the least sunshine days is December (10.5 days).

Average UV index in December
Kalajoki, 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, February, November and December (UV index 1).

Average cloud cover in December
Kalajoki, Finland

Average cloud cover in December: 71

The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is June (Cloud cover 38).

Average visibility in December
Kalajoki, Finland

Average visibility in December: 9km

The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February, March and April (8km).