Weather is probably a major factor when you plan your trip to Iturup Etorofu, but bear 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 temperature of 15°C, while the coldest months are January and February, with an average of -10°C. The snowiest months in Iturup Etorofu are March, February, January and December, with each month seeing an average of 228 cm of snowfall.