If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Cua Lo: 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 Cua Lo are October, September, August, and July, with each month seeing an average of 12 inches of rainfall.