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 temperature of 12°C, while the coldest months are January and December, with an average of -4°C. The rainiest months in Nyingtri are June, July, September and May, with each month seeing an average of 710 mm of rainfall.