Tomsk weather in December

In December, Tomsk sees average daytime highs of -12°C and overnight lows near -18°C, with 39 mm of precipitation across 11.4 wet days and about 6.7 hours of daylight. It is the 11th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about -10°C in the first days to -13°C by the end. The sky is clear or mostly clear about 6% of the time in December, and the air most often feels dry.

Daylight stretches from about 7 hours at the start of December to 6 h 36 min by month's end. Set against the rest of the year, December is Tomsk's 12th-clearest and 1st-windiest month. For the whole year in context, see Tomsk's year-round climate.

Daytime high
-12°
11th warmest
Overnight low
-18°
2nd coldest
Precipitation
39 mm
11.4 wet days
Daylight
6 h 36 min
8:59 AM – 3:34 PM
Cloud cover
90%
12th clearest
Wind
14 km/h
1st windiest
Solar energy
0.41 kWh/m²
Travel score
0.0
out of 10

Tomsk is city in and administrative center of Tomsk Oblast, Russia.

Density
1,948/km²
people per km²
Founded
1604

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about -10°C in the first days to -13°C by the end.

A typical December day in Tomsk reaches about -12°C in the afternoon and slips back to -18°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between -24°C and -2°C. Set against its neighbours, December runs about 7°C cooler than November and about 2°C warmer than January.

-30°-20°-10°151015202531
Avg high (°C)Avg low (°C)
1-10-17
2-10-17
3-10-17
4-10-17
5-11-17
6-11-17
7-11-17
8-11-18
9-11-18
10-11-18
11-11-18
12-11-18
13-11-18
14-12-18
15-12-18
16-12-18
17-12-18
18-12-18
19-12-18
20-12-19
21-12-19
22-12-19
23-12-19
24-12-19
25-13-19
26-13-20
27-13-20
28-13-20
29-13-20
30-13-20
31-13-20

How December really feels in Tomsk

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 31 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
31
31 feel bitter (≤ -10°C)

The story in December is cold — wind chill drags the overnight "feels like" below the raw low.

Tomsk weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-14° / -21°267.910.67.20.0
Feb-10° / -18°206.88.89.10.0
Mar-2° / -11°267.98.611.40.0
Apr / -3°338.54.313.91.0
May15° / 4910.80.916.14.5
Jun21° / 11°5511.2017.36.2
Jul23° / 13°6211.5016.86.6
Aug20° / 11°6311.9014.96.0
Sep14° / 5211.40.212.53.7
Oct / -2°5312.56.410.10.6
Nov-5° / -12°4811.612.57.90.0
Dec-12° / -18°3911.4146.70.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 6% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 4% of December, with mostly cloudy or overcast conditions the remaining 91%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11090
2991
3991
4991
5991
6991
71090
81090
91090
101090
111090
121090
13991
14991
151090
161090
171090
181090
191090
201090
211090
221090
231090
241090
25991
26991
27991
28991
29991
30991
311090

Chance of precipitation in December

Any precipitationSnow

Tomsk gets around 39 mm of rain and snow over 11.4 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 37% and peaks near 40% on the wettest days, and about 14 days bring snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
14047
23947
33947
43946
53946
63846
73845
83845
93745
103745
113744
123744
133744
143744
153644
163643
173643
183643
193643
203643
213644
223644
233644
243645
253645
263645
273544
283544
293444
303444
313443

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in December

Winds average 14 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 7 hours at the start of December to 6 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over December. Sunrise moves from 8:40 AM to 9:04 AM, and sunset from 3:40 PM to 3:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
17.08:403:40
27.08:413:39
36.98:433:38
46.98:443:38
56.98:463:37
66.88:473:36
76.88:493:36
86.88:503:35
96.78:513:35
106.78:533:34
116.78:543:34
126.78:553:34
136.68:563:34
146.68:573:34
156.68:583:34
166.68:593:34
176.69:003:34
186.69:003:34
196.69:013:34
206.59:023:35
216.59:023:35
226.59:033:35
236.59:033:36
246.59:043:36
256.69:043:37
266.69:043:38
276.69:043:39
286.69:043:39
296.69:043:40
306.69:043:41
316.69:043:42

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.41 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.41 kWh/m² to a high of 5.92 kWh/m² in June across the year — December's 0.41 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.5Dim
20.5Dim
30.5Dim
40.5Dim
50.5Dim
60.5Dim
70.4Dim
80.4Dim
90.4Dim
100.4Dim
110.4Dim
120.4Dim
130.4Dim
140.4Dim
150.4Dim
160.4Dim
170.4Dim
180.4Dim
190.4Dim
200.4Dim
210.4Dim
220.4Dim
230.4Dim
240.4Dim
250.4Dim
260.4Dim
270.4Dim
280.4Dim
290.4Dim
300.4Dim
310.4Dim
Planning a trip in December

Is December a good time to visit Tomsk?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

0.0
Sightseeing
8th-best month of the year
0.0
Beach & pool
7th-best month of the year

December is a weaker month for outdoor sightseeing in Tomsk.

What to pack for Tomsk in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Tomsk sees daytime highs around -12°C and nights near -18°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 11 days see rain.

a warm layera heavy coatrain gear

UV index in Tomsk in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 0. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Tomsk peaks around July 10 at about 6 (high) — a little sun protection helps at midday. It bottoms out near January 1 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 5 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 10UV 6Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May5Moderate
Jun6High
Jul6High
Aug5Moderate
Sep3Moderate
Oct1Low
Nov1Low
Dec0Low

Air quality in Tomsk in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Tomsk is worst in April — around 18 µg/m³ PM2.5 (moderate), about 5.1× the cleanest month (December, 4 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodApr 1717 µg/m³Dec 164 µg/m³
PM2.5 (µg/m³)Level
Jan5Good
Feb8Good
Mar9Good
Apr18Moderate
May11Good
Jun10Good
Jul15Moderate
Aug9Good
Sep7Good
Oct7Good
Nov5Good
Dec4Good
Location & terrain

Where is Tomsk?

Tomsk sits at 56.5°N, 85.0°E, 122 m above sea level, in Russia. The nearest listed city is Seversk, 13 km away.

Topography around Tomsk

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Tomsk.

Within 3 km, the terrain around Tomsk has only modest variations in elevation — a maximum elevation change of 105 m around an average of 112 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 146 m; within 80 km, only modest variations in elevation — a maximum elevation change of 239 m.

The land around Tomsk is covered by artificial surfaces (64%) and trees (28%) within 3 km, trees (61%) within 16 km, and trees (77%) within 80 km.

3 km
105 m
16 km
146 m
80 km
239 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Seversk 13 km · Tayga 62 km · Yashkino 75 km · Anzhero-Sudzhensk 80 km · Yurga 87 km · Asino 90 km · Bolotnoye 99 km · Berëzovskiy 122 km

Russia travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 32% of US
price level, 2025
GDP per capita
$17,547
2025
Happiness
5.8 / 10
World Happiness, 2025
Safe drinking water
76%
of population, 2024
Homicide rate
6.8
per 100k, 2021
Road deaths
12
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 521
Religion
other Christian 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Tomsk (56.5005°, 84.9822°, elevation 122 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).