Omsk climate — normals and trends
Omsk (Russia) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 1.5 °C and it receives 416 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (19.5 °C on average) and the coldest is January (-17.6 °C). Rainfall peaks in July.
Omsk averages 190 frost days, 9 hot days (≥ 30 °C) and 97 rainy days per year.
Omsk has warmed by +2.4 °C between 1940 and 2025, or +0.28 °C per decade. This trend is statistically significant.
The number of frost days there went from about 198 to 182 per year over the period.
The hottest day of the period reached 39.4 °C (on 12 July 2023) and the coldest -47.1 °C (on 8 December 1968).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
OmskOmsk Oblast
- coords
- 54.99°, 73.37°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
1.5°C
Average daily high
5.9°C
Average daily low
-3.1°C
Annual rainfall
416mm
Sunshine / day
7.7h
Mean relative humidity
72%
Average peak wind
18.7km/h
Seasonal range
37.1°C
Frost days (< 0 °C)
190 d/yr
Hot days (≥ 30 °C)
9 d/yr
Rainy days (≥ 1 mm)
97 d/yr
Annual snowfall
88.5 cm
Average feels-like high
2.2 °C
Average feels-like low
-7.1 °C
Average peak gust
35.2 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
11.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.33 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
39.4 °C
12 July 2023
Coldest day
-47.1 °C
8 December 1968
Wettest day
52 mm
11 June 1946
Windiest day
51.0 km/h
22 April 1985
Strongest gust
103.7 km/h
26 April 2014
Hottest feels-like
40.8 °C
18 July 1953
Coldest feels-like
-52.2 °C
8 December 1968
Snowiest day
17.2 cm
22 October 2015
Sunniest day
16.2 h
28 June 2025
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -7.8 °C | +6.3 °C | 26 mm | +9 mm |
| Feb | -6.4 °C | +5.9 °C | 9 mm | -4 mm |
| Mar | 0.7 °C | +4.8 °C | 22 mm | +4 mm |
| Apr | 14.8 °C | +6.4 °C | 25 mm | -4 mm |
| May | 18.9 °C | +1.2 °C | 65 mm | +25 mm |
| Jun | 26.3 °C | +3.4 °C | 46 mm | -8 mm |
| Jul | 23.9 °C | -0.5 °C | 113 mm | +50 mm |
| Aug | 21.6 °C | -0.1 °C | 117 mm | +59 mm |
| Sep | 17.5 °C | +1.7 °C | 21 mm | -17 mm |
| Oct | 5.5 °C | -0.9 °C | 27 mm | -8 mm |
| Nov | 0.2 °C | +4.9 °C | 59 mm | +29 mm |
| Dec | -7.4 °C | +3.9 °C | 30 mm | +8 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Omsk?
Omsk has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 1.5 °C and it receives 416 mm of precipitation per year.
What is the hottest day ever recorded in Omsk?
The hottest day measured in Omsk between 1940 and 2025 was 12 July 2023, reaching 39.4 °C.
What is the coldest day in Omsk?
The coldest day measured in Omsk between 1940 and 2025 was 8 December 1968, at -47.1 °C.
Does it snow in Omsk?
Yes. Omsk gets on average 88.5 cm of snow per year and has around 190 frost days.
Has the climate of Omsk warmed?
Yes: Omsk warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Omsk?
The wettest day measured in Omsk between 1940 and 2025 was 11 June 1946, with 52 mm of rain in 24 hours.
What was the windiest day in Omsk?
The windiest day measured in Omsk between 1940 and 2025 was 22 April 1985, with winds reaching 51.0 km/h.
What is the warmest month in Omsk?
The warmest month in Omsk is July (19.5 °C on average); the coldest is January (-17.6 °C).
How much does it rain in Omsk?
Omsk receives on average 416 mm of precipitation per year, spread over about 97 rainy days.
Is it sunny in Omsk?
Omsk gets on average 7.7 hours of sunshine per day, roughly 2,811 hours per year over 1940-2025.
What is the biggest single-day snowfall in Omsk?
The heaviest 24-hour snowfall measured in Omsk between 1940 and 2025 was 22 October 2015, with 17.2 cm.
Are there tropical nights in Omsk?
Yes: Omsk has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Omsk?
In Omsk, between 1940 and 2025, the highest apparent temperature reached 40.8 °C on 18 July 1953, and the lowest was -52.2 °C on 8 December 1968.
Compare Omsk with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Omsk