Planning for the weather is a good way to make your trip to Bac Ninh relaxing and enjoyable, especially when you’re splurging. 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 65°F. The rainiest months in Bac Ninh are August, July, May, and June, with each month seeing an average of 12 inches of rainfall.