Omsk is warmest in July, averaging 26° by day and 14° at night. The wettest month is June with 69 mm, and the year brings about 450 mm in total.
Month by month
| Month | High | Low | Rain | Daylight | Good for |
|---|---|---|---|---|---|
| January | -14° | -24° | 25 mm | 7.5 h | Cool |
| February | -11° | -20° | 25 mm | 9.3 h | Cool |
| March | -3° | -12° | 28 mm | 11.5 h | Cool |
| April | 10° | -1° | 21 mm | 13.8 h | Cool |
| May | 20° | 4° | 34 mm | 15.9 h | Sightseeing |
| June | 23° | 12° | 69 mm | 17.1 h | Sightseeing |
| July | 26° | 14° | 68 mm | 16.6 h | Beach weather |
| August | 24° | 12° | 43 mm | 14.7 h | Sightseeing |
| September | 16° | 6° | 42 mm | 12.4 h | Mild |
| October | 7° | -2° | 34 mm | 10.1 h | Cool |
| November | -5° | -13° | 33 mm | 8.0 h | Cool |
| December | -13° | -20° | 28 mm | 6.9 h | Cool |
High and low are average daily maximum and minimum, rain is typical monthly total, daylight is the hours between sunrise and sunset mid-month. Climate normals from NASA POWER — averages, not promises.
When to go
Beach weather: July — highs around 26°, nights no colder than 14°, and at most 68 mm of rain in a month.
Walking the city: May, June and August — highs of 20–24° and no more than 69 mm of rain a month.