Weather is only one factor, but it can really affect your travel plans, especially if you're planning an extended stay in Chainarai. The hottest months are usually April and March with an average temp of 86°F, while the coldest months are December and January with an average of 78°F. The rainiest months in Chainarai are September, August, July, and October, with each month seeing an average of 9 inches of rainfall.