Weather is probably a major factor when you plan your trip to South Indian Lake, 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 14°C, while the coldest months are February and January, with an average of -18°C. The snowiest months in South Indian Lake are March, January, November and February, with each month seeing an average of 29 cm of snowfall.