Weather is probably a major factor when you plan your trip to Iturup Etorofu, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually August and July with an average temp of 59°F, while the coldest months are January and February with an average of 15°F. The snowiest months in Iturup Etorofu are March, February, January, and December, with each month seeing an average of 90 inches of snowfall.