Weather will likely play an important role when you plan your trip to Thekkady, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually April and March with an average temp of 79°F, while the coldest months are January and February with an average of 74°F. The rainiest months in Thekkady are October, November, August, and December, with each month seeing an average of 7 inches of rainfall.