If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Phuc Yen: The hottest months are usually June and July with an average temp of 83°F, while the coldest months are January and December with an average of 66°F. The rainiest months in Phuc Yen are August, July, June, and September, with each month seeing an average of 14 inches of rainfall.