Climate averages 1991–2020
Omsk weather
in August.
A mild, moderately wet month: the 3rd warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a mild month in Omsk: daytime highs average 21.7°C and nights cool to about 13.0°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 61 mm of rain on roughly 11 days, which makes August a moderately wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 59 min on an average August day.
The nearest other city in this atlas is Petropavl (270 km away). In August its highs average 21.3°C, about as warm as Omsk, with 58 mm of rain.
Among the 236 cities listed in Russia, Omsk ranks joint 113th of 236 for the warmest August highs and joint 83rd of 236 for the driest August (rainfall, lowest first). The mean August high of those 236 cities is 22.4°C; Omsk is 0.7°C cooler than that mean.
From August to September, average highs fall by 6.6°C to 15.1°C, and monthly rainfall falls from 61 mm to 33 mm.
The annual picture
August in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Omsk climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -13.2°C-19.9°C | -19.9°C | 14 | 4.9 | 7.88 h |
| February | -10.6°C-17.5°C | -17.5°C | 12 | 4.2 | 9.610 h |
| March | -2.5°C-10.5°C | -10.5°C | 18 | 5.2 | 11.812 h |
| April | 9.2°C-1.3°C | -1.3°C | 30 | 7.4 | 14.114 h |
| May | 18.0°C6.2°C | 6.2°C | 36 | 8.0 | 16.116 h |
| June | 22.6°C12.6°C | 12.6°C | 53 | 10.0 | 17.317 h |
| July | 24.0°C15.1°C | 15.1°C | 62 | 11.2 | 16.817 h |
| August, selected | 21.7°C13.0°C | 13.0°C | 61 | 10.8 | 15.015 h |
| September | 15.1°C7.1°C | 7.1°C | 33 | 7.8 | 12.813 h |
| October | 6.9°C0.4°C | 0.4°C | 32 | 8.0 | 10.511 h |
| November | -3.9°C-9.6°C | -9.6°C | 29 | 7.6 | 8.58 h |
| December | -10.3°C-16.7°C | -16.7°C | 21 | 6.6 | 7.37 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Petropavl in AugustKazakhstan · 270 kmHigh 21.3°C · Low 13.2°C · 58 mm rain
- Kokshetau in AugustKazakhstan · 321 kmHigh 22.5°C · Low 13.4°C · 55 mm rain
- Pavlodar in AugustKazakhstan · 384 kmHigh 24.7°C · Low 14.5°C · 38 mm rain
- Ekibastuz in AugustKazakhstan · 386 kmHigh 24.6°C · Low 14.4°C · 41 mm rain
- Astana in AugustKazakhstan · 443 kmHigh 24.3°C · Low 13.7°C · 34 mm rain
- Tobolsk in AugustRussia · 474 kmHigh 19.1°C · Low 12.0°C · 74 mm rain
- Kurgan in AugustRussia · 511 kmHigh 21.7°C · Low 13.4°C · 54 mm rain
- Tyumen in AugustRussia · 542 kmHigh 20.1°C · Low 12.5°C · 65 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Omsk) is explained once on the Omsk year overview and on the Sources, method and limits page.