Sea turtles do not nest on all the beaches in Costa Rica. Although some do, the biggest chance to see sea turtles occurs in specific areas of the country, where the numbers of sea turtles that arrive is so high, that chances of seeing them is also really high.
Here is some information on where you will have the biggest chance to see sea turtles in Costa Rica:
( Leatherback September to March and Olive Ridley from July to February ) ( Olive Ridleys arrive in large numbers during 1or 2 nights per month, but the date varies depending on the tides and moon position )
-Nancite inside Santa Rosa National Park
-Naranjo inside Santa Rosa National Park
-Playa Grande – Ventanas – Langosta Beach in Las Baulas National Park near Tamarindo, Conchal and Flamingo
-Playa Buena Vista North of Samara
-Playa Camaronal South of Samara
-Corozalito South of Samara
-Ostional Between Samara and Nosara
-Punta Mala South of Jaco Beach, inside a Sea Turtle Sanctuary
-Golfo Dulce
-Corcovado
-Gandoca Manzanillo ( March incl. – July incl. )
-Barra de Pacuare ( March incl. – July incl.)
-Tortuguero ( July incl. – Octubre incl. )