Planning for the weather is an important factor for making your trip to Nyingtri a success, especially when you’re splurging. The hottest months are usually August and July with an average temp of 53°F, while the coldest months are January and December with an average of 25°F. The rainiest months in Nyingtri are June, July, September, and May, with each month seeing an average of 28 inches of rainfall.