Planning for the weather is an important factor for making your trip to Moc Chau a success, 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 66°F. The rainiest months in Moc Chau are August, July, September, and June, with each month seeing an average of 12 inches of rainfall.