If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Claxton Bay: The hottest months are usually September and May with an average temp of 81°F, while the coldest months are January and February with an average of 79°F. The rainiest months in Claxton Bay are August, July, November, and October, with each month seeing an average of 7 inches of rainfall.