Taking into account the local weather in Caño Negro is an important factor for planning your visit, especially if you plan to spend your trip poolside. The hottest months are usually April and May with an average temp of 78°F, while the coldest months are January and February with an average of 76°F. The rainiest months in Caño Negro are June, October, July, and September, with each month seeing an average of 14 inches of rainfall.