Tallinn in December: 1°C / 34°F afternoons, −3°C / 27°F nights, about 14 wet days, 21 hours of sunshine all month and the year's strongest wind.
Dress to stand still in wind. On the Estonian Weather Service's tables December is Tallinn's darkest and windiest month: 21 hours of sunshine in total, a mean wind of 3.8 m/s, the highest of the year, and afternoons of 1.2°C over nights of −3.1°C. Only 59mm falls, across about 14 days, so wet is not the main problem. Standing is. The Christmas market holds Town Hall Square from 20 November to 6 January, around a tree Visit Tallinn traces to 1441, and you spend an hour at a time there without moving. A still body makes less heat than a walking one, and wind carries off what it does make. Pack a loden coat the wind cannot pass through, a coral-red cardigan, wool trousers, lined boots and a hat.
December in Tallinn is an hour standing on Town Hall Square at −3°C, in the windiest month of the year. Your coat has to work while you are not moving.

Loden is wool fulled until it is dense, and density is what stops wind. December's 3.8 m/s mean wind is the strongest of the year at Tallinn-Harku, and a deep forest-green loden coat to the knee, stand collar closed, keeps it off your chest and thighs through an hour at the market. Button it all the way; the coral cardigan still shows at the neck.

With the coat buttoned all evening, the neckline is the only part of your outfit anyone sees at a stall on Town Hall Square, so make it coral red. A ribbed, cropped cardigan sits over the cream base without adding bulk under the loden, and it works alone in a warm café once the sun has set at about 3:20pm.

Start with a soft layer against the skin. With 21 hours of sunshine in the month there is no midday warm-up to dress around: expect about 1°C / 34°F at noon and −3°C / 27°F after dark. A cream cotton-wool long-sleeve is the first layer for both, gentler than a coarse knit on bare skin, and cream frames the coral at the V of the cardigan.

Pleated wool trousers leave room for a thermal layer underneath, which is what gets you through a night at −3°C / 27°F. Heather-oat wool keeps its warmth when you stop moving, and at a market stall that is most of the evening. The cuffed hem sits on top of the lined boots, so the wind finds no gap at the ankle.

Stand on stone at −3°C / 27°F for an hour and your feet go cold before anything else. A shearling lining keeps heat in around the foot, a chunky rubber lug sole puts distance between you and the cobbles, and the lugs grip on the icy climb up to Toompea. Wear them over wool socks; cotton ones stay damp inside the lining.

Cover your ears before the wind does its work. A cream wool hat pulled down over them keeps the heat a bare head gives away on an open square, and December's mean wind is the highest of the year. The red pattern band ties the hat to the cardigan; if you leave it at home, the knitwear stalls at the market are where to replace it.

The stand collar does most of the work at the throat, so the scarf can be narrow. A mid-grey fine wool scarf wound once fills the gap between collar and chin in a crosswind across Town Hall Square, and folds small enough for a coat pocket in a heated shop. Grey keeps the attention on the coral at your neck.

Carry it by the handle, in front of you, where you can see it among the stalls. A dark brown structured bag with a gold clasp shuts with one press, which matters when your fingers are cold and you are paying at −3°C / 27°F. Its brown matches the boots, so the top and bottom of the outfit agree.
Loden coat buttoned · coral-red cardigan over the cream base · heather-oat wool trousers · lined winter boots · patterned wool hat · grey scarf. Out after a sunrise at about 9:10am, up to Toompea while the light lasts, lunch indoors by one.
Same coat, collar up · cardigan at the neck · hat pulled over the ears · brown top-handle bag in hand. Town Hall Square after sunset at about 3:20pm, an hour among the market stalls around the tree, then dinner in the Old Town.
A suggested look — deep green loden coat, red ribbed cardigan over a cream base, heather oat wool trousers, dark brown lined winter boots, cream patterned wool hat.
On the Estonian Weather Service's long-term averages for Tallinn-Harku, December peaks at 1.2°C / 34°F in the afternoon and bottoms out at −3.1°C at night, with a monthly mean of −0.9°C and 59mm of precipitation. Counting from NOAA NCEI's daily record for the station, about 14 days bring 1mm or more. December has the year's lowest sunshine, 21 hours across the month, and its highest mean wind, 3.8 m/s against 3.7 in January. On the 15th the sun rises about 9:10am and sets about 3:20pm, a day of about six hours.
A knee-length deep green loden coat with a stand collar, a coral-red ribbed cardigan, a cream cotton-wool long-sleeve base, heather-oat wool trousers with a cuffed hem, dark brown shearling-lined boots on a lug sole, a cream knitted hat with a red pattern band, a narrow grey wool scarf and a dark brown top-handle bag. Between them they handle 1°C / 34°F at noon, −3°C / 27°F at the market after dark and about 14 wet days. The umbrella and the smooth-soled shoes stay behind; wool socks go in for every day.
The market on Town Hall Square opens on Friday 20 November 2026 and runs to 6 January 2027. Visit Tallinn says "Tallinn was the first place in Europe to have a public Christmas tree", crediting the Brotherhood of Black Heads with a tree on the square in 1441, and cites historian Jüri Kuuskemaa's find of a 1441 council record paying musicians by the tree on 25 December. Dress for standing: a dense coat buttoned to the collar, a hat over your ears, wool trousers and lined boots, because an hour at the stalls at −3°C / 27°F costs more heat than the walk there.
Early December for a little more light and ordinary working days; late December for the holidays. On 1 December the day lasts about 6h 40m and the sun sets about half past three; around the solstice on the 21st it is about 6h 05m, with sunset near 3:20pm. The market runs throughout, to 6 January. Then the public holidays arrive: jõululaupäev, Christmas Eve, is a day off in Estonia, as are the 25th and 26th, and 1 January too. Put shopping and gallery days in the first three weeks and keep the last one for the square.
December is three degrees colder at both ends of the day, windier and darker. The Estonian Weather Service's figures put November at 4°C / 39°F and 0°C / 32°F with 29 hours of sunshine; December drops to 1°C / 34°F and −3°C / 27°F with 21, the lowest of the year, and a mean wind of 3.8 m/s against November's 3.6. Wet days barely change, 13 against 14. November's problem is sleet while you walk, answered with a hooded puffer. December's is wind while you stand still, answered with a dense loden coat and a hat.
Wool, from the plain to the very fine. At the fine end is the Haapsalu shawl, which the Haapsalu Käsitööselts describes as a lace shawl knitted in pure wool and known from the first half of the 19th century. Lace lets wind through, so wear one under the coat. At the plain end are the woollen mittens and knitwear sold at the Christmas market on Town Hall Square. For a visitor, that adds up to a dense coat from home and one patterned wool piece, a hat or a pair of mittens, bought at a stall.