Planning for the weather is an important factor for making your trip to Tortuguero a success, especially when you're splurging. The hottest months are usually September and May with an average temp of 79°F, while the coldest months are January and February with an average of 76°F. The rainiest months in Tortuguero are July, November, August, and June, with each month seeing an average of 19 inches of rainfall.