December weather forecast and climate
Tallinn, Estonia

A beautiful summer view of an ancient town in Tallinn, Estonia
A beautiful summer view of an ancient town in Tallinn, Estonia

Weather in December

December, the first month of the winter, in Tallinn, is still a cold month, with average temperature fluctuating between 0.3°C (32.5°F) and -4.2°C (24.4°F).

Temperature

In Tallinn, the average high-temperature marginally drops, from a cold 3.4°C (38.1°F) in November, to a still wintry 0.3°C (32.5°F). The average low-temperature, in December, is -4.2°C (24.4°F).

Humidity

Months with the highest humidity are January, November and December, with an average relative humidity of 88%.

Rainfall

In Tallinn, during December, the rain falls for 5 days and regularly aggregates up to 49mm (1.93") of precipitation. Throughout the year, in Tallinn, there are 120 rainfall days, and 617mm (24.29") of precipitation is accumulated.

Snowfall

Months with snowfall in Tallinn are January through May, October through December. In Tallinn, during December, snow falls for 11 days. In Tallinn, during the entire year, snow falls for 55.1 days.

Sea temperature

In Tallinn, Estonia, the average water temperature is 3.9°C (39°F).
Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

Daylight

The month with the shortest days in Tallinn is December, with an average of 6.2h of daylight.

Sunshine

The month with the least sunshine is December, with an average of 0.5h of sunshine.

UV index

Months with the lowest UV index in Tallinn, Estonia, are January, November and December, with an average maximum UV index of 0. A UV Index of 2, and less, symbolizes a minimal health hazard from the exposure to the Sun's UV rays for average individuals.
Note: In December, the average maximum UV index of 0 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in December in Tallinn?

In December, in Tallinn, Estonia, the average high-temperature is 0.3°C (32.5°F), and the average low-temperature is -4.2°C (24.4°F).

What are the most humid months in Tallinn?

Months with the highest humidity in Tallinn, Estonia, are January, November and December, with an average relative humidity of 88%.

What is the average humidity in December in Tallinn?

In Tallinn, the average relative humidity in December is 88%.

How many days does it rain in December in Tallinn?

In Tallinn, in December, during 5 rainfall days, 49mm (1.93") of precipitation is typically accumulated.

How many days does it snow in December in Tallinn?

In December, snow falls for 11 days.

How cold is the water in December in Tallinn?

In Tallinn, the average seawater temperature in December is 3.9°C (39°F). 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 Tallinn?

December has the shortest days of the year in Tallinn, Estonia, with an average of 6.2h of daylight.

What is the average length of the day in December in Tallinn?

In Tallinn, the average length of the day in December is 6.2h.

What is the month with the least sunshine in Tallinn?

With an average of 0.5h of sunshine, December has the least sunshine of the year in Tallinn.

How many hours of sunshine does Tallinn have in December?

In December, the average sunshine is 0.5h.

When is the lowest UV index in Tallinn?

Months with the lowest UV index in Tallinn, Estonia, are January, November and December, with an average maximum UV index of 0.

How high is the UV index in December in Tallinn?

In Tallinn, the average daily maximum UV index in December is 0. A UV Index reading of 2, and below, represents a minimal hazard to health from the exposure to the Sun's UV radiation.

Average temperature in December
Tallinn, Estonia

Average temperature in December - Tallinn, Estonia
  • Average high temperature in December: 0.3°C

The warmest month (with the highest average high temperature) is July (21.8°C).
The month with the lowest average high temperature is February (-1.6°C).

  • Average low temperature in December: -4.2°C

The month with the highest average low temperature is July (12.7°C).
The coldest month (with the lowest average low temperature) is February (-7°C).

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Average humidity in December
Tallinn, Estonia

Average humidity in December - Tallinn, Estonia
  • Average humidity in December: 88%

Months with the highest relative humidity are January, November and December (88%).
The month with the lowest relative humidity is May (69%).

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Average rainfall in December
Tallinn, Estonia

Average rainfall in December - Tallinn, Estonia
  • Average rainfall in December: 49mm

The wettest month (with the highest rainfall) is July (74mm).
The driest month (with the least rainfall) is April (30mm).

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Average rainfall days in December
Tallinn, Estonia

Average rainfall days in December - Tallinn, Estonia
  • Average rainfall days in December: 5 days

Months with the highest number of rainy days are September and October (16 days).
The month with the least rainy days is February (3 days).

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Average snowfall days in December
Tallinn, Estonia

Average snowfall days in December - Tallinn, Estonia
  • Average snowfall days in December: 11 days

The month with the highest number of snowfall days is January (14 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in December
Tallinn, Estonia

Average sea temperature in December - Tallinn, Estonia
  • Average sea temperature in December: 3.9°C

The best month for swimming (with the highest average sea temperature) is August (19.1°C).
The coldest months (with the lowest average sea temperature) are February and March (0.2°C).

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Average daylight in December /
Average sunshine in December
Tallinn, Estonia

Average daylight in December / Average sunshine in December - Tallinn, Estonia
  • Average daylight in December: 6.2h

The month with the longest days is June (Average daylight: 18.5h).
The month with the shortest days is December (Average daylight: 6.2h).

  • Average sunshine in December: 0.5h

The month with the most sunshine is June (Average sunshine: 10.1h).
The month with the least sunshine is December (Average sunshine: 0.5h).

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Average UV index in December
Tallinn, Estonia

Average UV index in December - Tallinn, Estonia
  • Average UV index in December: 0

Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are January, November and December (UV index 0).

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