Visiting local bars in Omsk is more fun when you know what the weather holds. These rainfall averages and temperatures can help you choose the best time for bar-hopping. The hottest months are usually July and June, with an average temperature of 17°C, while the coldest months are January and February, with an average of -13°C. The snowiest months in Omsk are March, December, November and February, with each month seeing an average of 40 cm of snowfall.