December weather forecast
Karttula, Finland

December

Weather in December

The first month of the winter, December, is also a subzero cold month in Karttula, Finland, with an average temperature ranging between min -5.7°C (21.7°F) and max -2.7°C (27.1°F).

Temperature

In December, the average high-temperature marginally drops from a cold 1.5°C (34.7°F) in November to a subzero cold -2.7°C (27.1°F). December's average low temperature in Karttula is a still freezing cold -5.7°C (21.7°F), displaying a subtle drop from its daily peak.

Humidity

In Karttula, the average relative humidity in December is 93%.

Rainfall

In Karttula, in December, it is raining for 5.2 days, with typically 40mm (1.57") of accumulated precipitation. Throughout the year, there are 106.5 rainfall days, and 384mm (15.12") of precipitation is accumulated.

Snowfall

Months with snowfall in Karttula are January through June, September through December. In Karttula, during December, snow falls for 21.1 days and regularly aggregates up to 216mm (8.5") of snow. Throughout the year, there are 110.8 snowfall days, and 1074mm (42.28") of snow is accumulated.

Daylight

With an average of 5h and 0min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 09:15 and sunset at 14:46. On the last day of December, in Karttula, sunrise is at 09:46 and sunset at 14:44 EET.

Sunshine

December has the least sunshine of the year in Karttula, with an average of 0.8h of sunshine.

UV index

The months with the lowest UV index in Karttula are January through March, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 1 in December interprets into the following advice:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.

Frequently asked questions

How cold is December in Karttula?
The high-temperature in Karttula during December is -2.7°C (27.1°F) and the low-temperature is -5.7°C (21.7°F).
What is the average humidity in December in Karttula?
The average relative humidity in December is 93%.
How many days does it rain in December in Karttula?
In December, in Karttula, the rain falls for 5.2 days. Throughout December, 40mm (1.57") of precipitation is accumulated.
How many days does it snow in December in Karttula?
In December, in Karttula, Finland, it is snowing for 21.1 days. Throughout December, 216mm (8.5") of snow is accumulated.
What is the month with the shortest days in Karttula?
The month with the shortest days in Karttula is December, with an average of 5h and 0min of daylight.
What is the average length of the day in December in Karttula?
The average day length in December in Karttula is 4h and 59min.
When are sunrise and sunset in December in Karttula?
In December, on the first day of the month, sunrise is at 09:15 and sunset at 14:46. On the last day of the month, in Karttula, Finland, sunrise is at 09:46 and sunset at 14:44 EET.
What is the month with the least sunshine in Karttula?
The month with the least sunshine in Karttula is December, with an average of 0.8h of sunshine.
How long on average sun shines in December in Karttula?
In Karttula, Finland, the average sunshine duration in December is 0.8h.
What is the month with the lowest UV index in Karttula?
The months with the lowest UV index in Karttula, Finland, are January through March, November and December, with an average maximum UV index of 1.
How high is the UV index in December in Karttula?
In December, the average daily maximum UV index in Karttula, Finland, is 1. A UV Index value of 2, and less, symbolizes a low health threat from exposure to the Sun's 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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December
Karttula, Finland
  • Average high temperature in December: -2.7°C

The warmest month (with the highest average high temperature) is July (20.9°C).
The month with the lowest average high temperature is January (-5.8°C).

  • Average low temperature in December: -5.7°C

The month with the highest average low temperature is July (12.9°C).
The coldest month (with the lowest average low temperature) is January (-9.9°C).

Average pressure in December
Karttula, Finland
  • Average pressure in December: 1008mbar

The month with the highest atmospheric pressure is May (1014.5mbar).
The month with the lowest atmospheric pressure is December (1008mbar).

Average wind speed in December
Karttula, Finland
  • Average wind speed in December: 14.7km/h

The windiest month (with the highest average wind speed) is November (15km/h).
The calmest month (with the lowest average wind speed) is July (10.9km/h).

Average humidity in December
Karttula, Finland
  • Average humidity in December: 93%

The months with the highest relative humidity are January and February (95%).
The month with the lowest relative humidity is June (68%).

Average rainfall in December
Karttula, Finland
  • Average rainfall in December: 40mm

The wettest month (with the highest rainfall) is July (48mm).
The driest month (with the least rainfall) is April (23mm).

Average rainfall days in December
Karttula, Finland
  • Average rainfall days in December: 5.2 days

The month with the highest number of rainy days is July (13.7 days).
The month with the least rainy days is February (3.1 days).

Average snowfall in December
Karttula, Finland
  • Average snowfall in December: 216mm

The month with the highest snowfall is January (230mm).
The months with the least snowfall are July and August (0mm).

Average snowfall days in December
Karttula, Finland
  • Average snowfall days in December: 21.1 days

The month with the highest number of snowfall days is January (23.2 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in December /
Average sunshine in December
Karttula, Finland
  • Average daylight in December: 5h and 0min

The month with the longest days is June (Average daylight: 20h and 0min).
The month with the shortest days is December (Average daylight: 5h and 0min).

  • Average sunshine in December: 0h and 5min

The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 0h and 48min).

Average sunshine days in December
Karttula, Finland
  • Average sunshine days in December: 8.3 days

The month with the most sunshine days is May (19.3 days).
The month with the least sunshine days is February (7.3 days).

Average UV index in December
Karttula, 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, March, November and December (UV index 1).

Average cloud cover in December
Karttula, Finland
  • Average cloud cover in December: 81

The months with the most cloud cover are January and February (Cloud cover 82).
The month with the least cloud cover is July (Cloud cover 42).

Average visibility in December
Karttula, Finland
  • Average visibility in December: 7km

The month with the highest visibility is June (10km).
The month with the lowest visibility is February (5km).

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