Weather is probably a major factor when you plan your trip to Darjeeling, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually June and August with an average temp of 66°F, while the coldest months are January and December with an average of 51°F. The rainiest months in Darjeeling are July, June, August, and May, with each month seeing an average of 37 inches of rainfall.