Tallinn
Estonia
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Tallinn, Estonia

A beautiful summer view of an ancient town in Tallinn, Estonia, with a distant view of the sea
A beautiful summer view of an ancient town in Tallinn, Estonia, with a distant view of the sea
The first month of the winter, December, is also a wintry month in Tallinn, Estonia, with temperature in the range of an average low of -4.2°C (24.4°F) and an average high of 0.3°C (32.5°F).

Temperature

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

Humidity

January, November and December, with an average relative humidity of 88%, are most humid months.

Rainfall

In December, the rain falls for 5 days. Throughout December, 49mm (1.9") of precipitation is accumulated. In Tallinn, Estonia, during the entire year, the rain falls for 120 days and collects up to 617mm (24.3") of precipitation.

Snowfall

January through May, October through December are months with snowfall.

Sea temperature

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

Daylight

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

Sunshine

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

UV index

Months with the lowest UV index in Tallinn are January, November and December, with an average maximum UV index of 0. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV rays for the ordinary person.
The daily maximum UV index of 0 in December interpret into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in December in Tallinn?

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

What is the most humid month in Tallinn?

January, November and December, with an average relative humidity of 88%, are most humid months in Tallinn, Estonia.

What is the average humidity in December in Tallinn?

In December, the average relative humidity is 88%.

How many days does it rain in December in Tallinn?

In Tallinn, Estonia, during December, the rain falls for 5 days and regularly aggregates up to 49mm (1.9") of precipitation.

How many days does it snow in December in Tallinn?

In Tallinn, during December, snow falls for 11 days.

How cold is the water in December in Tallinn?

In December, the average sea temperature in Tallinn, Estonia, 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?

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

What is the month with the least sunshine in Tallinn?

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

How long on average sun shines in December in Tallinn?

The average sunshine in December is 0.5h.

When is the lowest UV index in Tallinn?

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

How high is the UV index in December in Tallinn?

The average daily maximum UV index in December in Tallinn, Estonia, is 0. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to the UV radiation.
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).

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%).

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 lowest rainfall) is April (30mm).

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 lowest number of rainy days is February (3 days).

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 lowest number of snowfall days are June, July, August and September (0 days).

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).
Coldest months (with the lowest average sea temperature) are February and March (0.2°C).

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 shortest days is December (Average daylight: 6.2h).

  • Average sunshine in December: 0.5h

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

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).