January weather forecast
Tallinn, Estonia

Tallinn's year kicks off with the chilly grip of winter at its strongest. The first month experiences extreme freezing temperatures, plunging to as low as -5.8°C (21.6°F) during the night. January is one of those months where you can admire the city's gothic spires clad in snow, due to heavy snowfall. The winter sun is elusive, making daylight and sunshine hours short. Breath-taking frozen landscapes and a glittering ice-frozen Baltic Sea can be observed during this month.

Temperature

Tallinn's January average high-temperature settles at a freezing cold -1.2°C (29.8°F), showing a near match with the preceding month. January notes an average low temperature of -5.8°C (21.6°F) in Tallinn, subtly down from the daytime highs.

Humidity

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

Rainfall

In January, the rain falls for 4 days. Throughout January, 49mm (1.93") of precipitation is accumulated. In Tallinn, during the entire year, the rain falls for 120 days and collects up to 617mm (24.29") of precipitation.

Snowfall

Months with snowfall in Tallinn, Estonia, are January through May, October through December. The month with the most snowfall days in Tallinn is January, when snow falls for 14 days.

Sea temperature

In Tallinn, the average seawater temperature in January is 0.9°C (33.6°F).
Note: In the realm of swimming, this is life-threatening and fraught with danger. The cold water triggers intense discomfort and leads to swift hyperventilation. Donning a specialized swimsuit is essential to curb thermal harm.

Daylight

In Tallinn, the average length of the day in January is 7h and 0min.
On the first day of January, sunrise is at 09:18 and sunset at 15:30. On the last day of the month, sunrise is at 08:34 and sunset at 16:33 EET.

Sunshine

The average sunshine in January is 0.8h.

UV index

January, November and December, with an average maximum UV index of 0, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: An average UV index of 0 in January transforms into this advice:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.