December weather forecast
Tallinn, Estonia

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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 wraps up the year in Tallinn with the traditional winter charm. Temperatures hover around the freezing point, with an average low of -4.2°C (24.4°F). The city lights up with festive décor as snowfall rounds off the classic winter scene. Despite being the darkest month, the magic of the festive season enlivens the short daylight hours, completing the weather cycle in Tallinn.

Temperature

In December, the average high-temperature in Tallinn marginally drops from 3.4°C (38.1°F) in November to a still icy 0.3°C (32.5°F). December's average low-temperature in Tallinn is a freezing cold -4.2°C (24.4°F), reflecting a minor difference from the day's peak temperatures.

Humidity

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

Rainfall

In Tallinn, in December, it is raining for 5 days, with typically 49mm (1.93") of accumulated precipitation. Throughout the year, in Tallinn, Estonia, there are 120 rainfall days, and 617mm (24.29") of precipitation is accumulated.

Snowfall

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

Sea temperature

In December, the average sea temperature in Tallinn is 3.9°C (39°F).
Note: When swimming, this condition is immediately life-threatening. Loss of control over breathing occurs instantly, impairing clear thought. It is vital to wear a specialized swimsuit to prevent thermal loss.

Daylight

With an average of 6h and 12min of daylight, December has the shortest days of the year in Tallinn.
On the first day of December, sunrise is at 08:52 and sunset at 15:28. On the last day of the month, sunrise is at 09:18 and sunset at 15:30 EET.

Sunshine

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

UV index

January, November and December, with an average maximum UV index of 0, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: A maximum daily UV index of 0 during December morphs into the following directions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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Frequently asked questions

How cold is it in Tallinn in December?

An average high-temperature, in December, in Tallinn, 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?

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

What is the average humidity in December in Tallinn?

The average relative humidity in December in Tallinn 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, Estonia, in December, the average water temperature 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.

What is the month with the shortest days in Tallinn?

December has the shortest days of the year, with an average of 6h and 12min of daylight.

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

In Tallinn, Estonia, the average day length in December is 6h and 13min.

What time are sunrise and sunset in December in Tallinn?

On the first day of December in Tallinn, Estonia, sunrise is at 08:52 and sunset at 15:28. On the last day of the month, sunrise is at 09:18 and sunset at 15:30 EET.

What is the month with the least sunshine in Tallinn?

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

How long on average sun shines in December in Tallinn?

In December, the average sunshine duration in Tallinn is 0.5h.

What are the months with the lowest UV index in Tallinn?

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

What is the UV index reading in December in Tallinn?

In December, the average daily maximum UV index in Tallinn, Estonia, is 0. A UV Index of 2, and less, symbolizes a low health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average UV index

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%

The 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

The 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).
The 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: 6h and 1min

The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 12min).

  • Average sunshine in December: 0h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 0h and 30min).

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Average UV index in December
Tallinn, Estonia

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

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

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Tallinn, Estonia

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