Weather is probably a major factor when you plan your trip to Taplejung, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually August and June with an average temp of 65°F, while the coldest months are January and February with an average of 47°F. The rainiest months in Taplejung are July, August, June, and September, with each month seeing an average of 26 inches of rainfall.