If you're looking for summer vibes, the best time to travel to Altai is in July, June and August, when the average temperature reaches 20º, while January, December and March are the 3 sunniest months of the year, with an average of 26 hours.
However, if you prefer colder temperatures, make sure you visit Altai during January, February or December to experience an average of -23º.
For those who don't care too much about temperatures, but want to avoid getting wet in the rain, it's important to avoid travelling during July, August and June, when the average precipitation in Altai is 38mm, while the months of January, December and February are drier, with an average of 2mm.