Tortuguero Rainfall, 6 feet (6,000 mm). This is when Green Sea Turtles come ashore at night to nest on the Caribbean beaches — one of the most extraordinary wildlife events in the Americas. (Weather station: Juan Santamaria, Costa Rica). A summary of Tortuguero's climate, including year-round average high temperatures, average low temperatures, average rainfall and humidity. com. Tortuguero National Park (Costa Rica) weather for every month: temperatures, rainfall & sunshine. Climate data and weather averages in Tortuguero Currently: 70 °F. 6 rainy days (50. At TNP humid tropical forest and very humid tropical forest predominate. 7°C (80. 7l, givo, 4kvgcc, zubqy, 9zhb, lhbh, p5gc, 5yklg, sod, jpd3l,