Visiting local bars in Lai Chau is better in good weather. These temperatures and rainfall averages can help you determine the best time for bar hopping. The hottest months are usually May and June with an average temp of 71°F, while the coldest months are January and December with an average of 58°F. The rainiest months in Lai Chau are August, July, June, and September, with each month seeing an average of 13 inches of rainfall.