If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Ban Luam: The hottest months are usually April and March with an average temp of 85°F, while the coldest months are January and December with an average of 76°F. The rainiest months in Ban Luam are August, July, September, and May, with each month seeing an average of 12 inches of rainfall.