Weather will likely play an important role when you plan your trip to Vinh, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually June and July with an average temp of 85°F, while the coldest months are January and December with an average of 68°F. The rainiest months in Vinh are October, September, August, and July, with each month seeing an average of 12 inches of rainfall.