The answer is dependent on the type of activities travelers intend to do in the tropical rainforest. If the plan is to hike, fish or engage in other outdoor activities, the July to December dry season is ideal; for boating, the January to June wet season is optimal.
Visitors should take into account climate tolerance and preference when considering the best time for a vacation in the tropical rainforest. Rainforests experience "wet" and "dry" seasons, and a traveler's tolerance for humidity and heat must be part of the decision. The best time for one person may not necessarily be the best time for another person to visit the rainforest.