Omsk climate

Name: Omsk
Address: RU

Omsk is warmest in July, with average highs of 24 °C, and coldest in January, when nights average -20 °C. July is the wettest month (64 mm) and February the driest (13 mm). Figures are 1991–2020 climate normals.

Across a full year Omsk averages 409 mm of rain, 38 days above 25 °C and 190 days below freezing.

Russia · population 1,172,070 · 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 24 °C
Coldest month January -20 °C
Driest month February 13 mm
Wettest month July 64 mm
Least cloud June 55 % cloud
Hottest on record July 35 °C
Coldest on record January -47 °C

What to expectOmsk through the year

Omsk has a clear annual cycle: average daily highs run from -13 °C in January to 24 °C in July, a swing of 36 °C in mean temperature across the year.

Counted across a normal year, 38 days a year reach 25 °C, 7 of them reach 30 °C, 190 nights drop below freezing. The warmest reading in the 1991–2020 record is 35 °C, in July.

Rain is strongly seasonal. July averages 64 mm against 13 mm in February — 5.0 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	-13.3 °C	15 mm	81 %
February	-10.8 °C	13 mm	77 %
March	-2.7 °C	18 mm	68 %
April	9.1 °C	29 mm	62 %
May	17.9 °C	37 mm	56 %
June	22.6 °C	53 mm	55 %
July	23.9 °C	64 mm	57 %
August	21.7 °C	63 mm	60 %
September	15.0 °C	33 mm	67 %
October	6.8 °C	33 mm	74 %
November	-4.0 °C	30 mm	82 %
December	-10.4 °C	22 mm	86 %

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	-13.3 °C	-20.3 °C	-16.5 °C	2.6 °C	-46.7 °C	0	0	31
February	-10.8 °C	-18.2 °C	-14.1 °C	4.3 °C	-40.4 °C	0	0	28
March	-2.7 °C	-11.2 °C	-6.5 °C	14.6 °C	-30.7 °C	0	0	31
April	9.1 °C	-2.0 °C	4.0 °C	27.3 °C	-21.5 °C	0	0	19
May	17.9 °C	5.3 °C	12.5 °C	33.6 °C	-6.2 °C	5	1	5
June	22.6 °C	12.0 °C	18.0 °C	34.9 °C	1.0 °C	10	2	0
July	23.9 °C	14.5 °C	19.7 °C	35.3 °C	5.6 °C	13	3	0
August	21.7 °C	12.2 °C	17.3 °C	34.8 °C	2.6 °C	8	1	0
September	15.0 °C	6.4 °C	10.9 °C	31.0 °C	-3.9 °C	1	0	1
October	6.8 °C	-0.1 °C	3.5 °C	22.4 °C	-17.0 °C	0	0	16
November	-4.0 °C	-10.0 °C	-6.8 °C	9.7 °C	-41.4 °C	0	0	28
December	-10.4 °C	-17.1 °C	-13.5 °C	2.8 °C	-43.4 °C	0	0	31

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	15 mm	5	7.8 h/day	81 %	80 %	18 km/h
February	13 mm	4	9.7 h/day	77 %	80 %	18 km/h
March	18 mm	5	12 h/day	68 %	81 %	20 km/h
April	29 mm	7	14 h/day	62 %	66 %	20 km/h
May	37 mm	8	16 h/day	56 %	55 %	21 km/h
June	53 mm	10	17 h/day	55 %	61 %	18 km/h
July	64 mm	11	17 h/day	57 %	66 %	17 km/h
August	63 mm	11	15 h/day	60 %	68 %	17 km/h
September	33 mm	8	13 h/day	67 %	67 %	19 km/h
October	33 mm	8	11 h/day	74 %	73 %	19 km/h
November	30 mm	8	8.4 h/day	82 %	80 %	19 km/h
December	22 mm	7	7.2 h/day	86 %	82 %	19 km/h

How Omsk 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
Omsk	24 °C	-20 °C	409 mm	38
Petropavl · Kazakhstan	23 °C	-19 °C	438 mm	33
Kokshetau · Kazakhstan	24 °C	-18 °C	399 mm	42
Pavlodar · Kazakhstan	26 °C	-20 °C	303 mm	62
Astana · Kazakhstan	25 °C	-18 °C	351 mm	54

Where Omsk ranks

Ranking	Position	Value
The coolest places in Europe in February	10th of 50	-11 °C
The driest places in Europe in March	10th of 50	18 mm
The coolest places in Europe in March	12th of 50	-2.7 °C
The coolest places in the world in February	13th of 50	-11 °C
The driest places in Europe in February	13th of 50	13 mm
The coolest places in the world in March	14th of 50	-2.7 °C

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

QuestionsCommon questions about Omsk’s climate

When is the best time to visit Omsk?

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 Omsk get?

In July, the warmest month, daily highs average 24 °C. About 7 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 -20 °C in January, the coldest month. A normal year has 190 nights below freezing.

Which month is wettest in Omsk?

July, averaging 64 mm over 11 days with rain. The driest month is February with 13 mm. The year as a whole averages 409 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 Omsk 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: 54.992°, 73.369° (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.