Weather will likely play an important role when you plan your trip to Olgii, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually July and June, with an average temperature of 13°C, while the coldest months are January and December, with an average of -16°C. The snowiest months in Olgii are February, January, December and November, with each month seeing an average of 102 cm of snowfall.