Weather is probably a major factor when you plan your trip to Phobjikha Valley, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually August and July with an average temp of 58°F, while the coldest months are January and February with an average of 38°F. The rainiest months in Phobjikha Valley are July, June, August, and September, with each month seeing an average of 17 inches of rainfall.