Planning for the weather is an important factor for making your trip to Tanchachin a success, especially when you’re splurging. The hottest months are usually May and June, with an average temperature of 28°C, while the coldest months are January and December, with an average of 20°C. The rainiest months in Tanchachin are September, July, June and August, with each month seeing an average of 196 mm of rainfall.