Weather is probably a major factor when you plan your trip to Mori, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually July and August, with an average temperature of 23°C, while the coldest months are January and December, with an average of -6°C. The snowiest months in Mori are January, February, December and November, with each month seeing an average of 36 cm of snowfall.