Though weather is just one factor, it can really affect your travel plans, especially if you're planning an extended stay in Zhemgang. The hottest months are usually August and April with an average temp of 80°F, while the coldest months are January and December with an average of 68°F. The rainiest months in Zhemgang are June, July, August, and May, with each month seeing an average of 30 inches of rainfall.