Tomsk climate

Name: Tomsk
Address: RU

Tomsk is warmest in July, with average highs of 23 °C, and coldest in January, when nights average -21 °C. July is the wettest month (65 mm) and February the driest (21 mm). Figures are 1991–2020 climate normals.

Across a full year Tomsk averages 540 mm of rain, 24 days above 25 °C and 205 days below freezing.

Russia · population 574,002 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month July 23 °C
Coldest month January -21 °C
Driest month February 21 mm
Wettest month July 65 mm
Least cloud June 59 % cloud
Hottest on record July 35 °C
Coldest on record January -49 °C

What to expectTomsk through the year

Tomsk has a clear annual cycle: average daily highs run from -15 °C in January to 23 °C in July, a swing of 37 °C in mean temperature across the year.

Counted across a normal year, 24 days a year reach 25 °C, 2 of them reach 30 °C, 205 nights drop below freezing. The warmest reading in the 1991–2020 record is 35 °C, in July.

Rain is strongly seasonal. July averages 65 mm against 21 mm in February — 3.1 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	-14.9 °C	27 mm	84 %
February	-11.3 °C	21 mm	80 %
March	-3.0 °C	27 mm	70 %
April	5.7 °C	34 mm	67 %
May	14.6 °C	50 mm	62 %
June	20.9 °C	56 mm	59 %
July	23.2 °C	65 mm	59 %
August	20.2 °C	64 mm	62 %
September	13.2 °C	53 mm	69 %
October	4.7 °C	54 mm	79 %
November	-5.9 °C	49 mm	87 %
December	-12.0 °C	40 mm	89 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C	Days below 0 °C
January	-14.9 °C	-21.2 °C	-17.8 °C	1.4 °C	-48.6 °C	0	0	31
February	-11.3 °C	-18.0 °C	-14.4 °C	3.5 °C	-41.2 °C	0	0	28
March	-3.0 °C	-11.3 °C	-6.8 °C	10.5 °C	-30.2 °C	0	0	31
April	5.7 °C	-4.4 °C	1.1 °C	25.4 °C	-20.5 °C	0	0	26
May	14.6 °C	3.6 °C	9.6 °C	30.5 °C	-11.7 °C	2	0	8
June	20.9 °C	11.3 °C	16.5 °C	32.6 °C	-1.2 °C	7	0	0
July	23.2 °C	14.1 °C	18.9 °C	34.8 °C	6.1 °C	11	1	0
August	20.2 °C	11.2 °C	16.1 °C	32.1 °C	1.1 °C	4	0	0
September	13.2 °C	4.9 °C	9.3 °C	28.8 °C	-5.8 °C	1	0	3
October	4.7 °C	-1.8 °C	1.6 °C	18.6 °C	-23.2 °C	0	0	19
November	-5.9 °C	-12.3 °C	-8.8 °C	10.3 °C	-40.5 °C	0	0	29
December	-12.0 °C	-18.6 °C	-15.1 °C	1.7 °C	-44.2 °C	0	0	31

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	27 mm	8	7.5 h/day	84 %	78 %	17 km/h
February	21 mm	7	9.5 h/day	80 %	78 %	17 km/h
March	27 mm	8	12 h/day	70 %	78 %	18 km/h
April	34 mm	9	14 h/day	67 %	73 %	18 km/h
May	50 mm	11	16 h/day	62 %	65 %	18 km/h
June	56 mm	11	18 h/day	59 %	70 %	15 km/h
July	65 mm	11	17 h/day	59 %	72 %	14 km/h
August	64 mm	12	15 h/day	62 %	75 %	15 km/h
September	53 mm	11	13 h/day	69 %	75 %	16 km/h
October	54 mm	12	10 h/day	79 %	77 %	18 km/h
November	49 mm	12	8.2 h/day	87 %	82 %	18 km/h
December	40 mm	11	6.9 h/day	89 %	80 %	18 km/h

How Tomsk compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Tomsk	23 °C	-21 °C	540 mm	24
Kemerovo · Russia	24 °C	-20 °C	593 mm	29
Novosibirsk · Russia	24 °C	-20 °C	509 mm	30
Prokop’yevsk · Russia	24 °C	-20 °C	568 mm	31
Novokuznetsk · Russia	24 °C	-20 °C	639 mm	36
Barnaul · Russia	25 °C	-20 °C	526 mm	42
Biysk · Russia	26 °C	-20 °C	553 mm	50

Where Tomsk ranks

Ranking	Position	Value
The coolest places in Europe in February	7th of 50	-11 °C
The coolest places in Europe in November	7th of 50	-5.9 °C
The coolest places in Europe in March	9th of 50	-3.0 °C
The coolest places in Europe year-round	9th of 50	4.6 °C
The coolest places in the world in November	9th of 50	-5.9 °C
The coolest places in the world in February	10th of 50	-11 °C

Planning a trip? See the best time to visit Tomsk.

QuestionsCommon questions about Tomsk’s climate

When is the best time to visit Tomsk?

That depends on what you want, so the honest answer is a comparison rather than a single month. June, July, August sit closest to 20 °C on average, July is the warmest month and February the driest. The month-by-month table above has the full picture.

How hot does Tomsk get?

In July, the warmest month, daily highs average 23 °C. About 2 days a year pass 30 °C. The highest value in the 1991–2020 record is 35 °C.

How cold does it get in winter?

Nights average -21 °C in January, the coldest month. A normal year has 205 nights below freezing.

Which month is wettest in Tomsk?

July, averaging 65 mm over 11 days with rain. The driest month is February with 21 mm. The year as a whole averages 540 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Tomsk rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: 56.500°, 84.982° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.