Planning for the weather is an important factor for making your trip to Taplejung a success, especially when you're splurging. The hottest months are usually August and June, with an average temperature of 18°C, while the coldest months are January and February, with an average of 8°C. The rainiest months in Taplejung are July, August, June and September, with each month seeing an average of 653 mm of rainfall.