Weather is probably a major factor when you plan your trip to Rigi Kaltbad, 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 63°F, while the coldest months are February and January with an average of 36°F. The snowiest months in Rigi Kaltbad are April, May, November, and January, with each month seeing an average of 5 inches of snowfall.