Weather will likely play an important role when you plan your trip to Zell am See, 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 13°C, while the coldest months are January and February, with an average of -4°C. The snowiest months in Zell am See are December, January, November and February, with each month seeing an average of 13 cm of snowfall.