Costa Rica in June: Green Season Deep, Turtle Season Opens, and Veranillo Break

June is deep green season on the Pacific side of Costa Rica, but the Caribbean coast’s turtle season opening at Tortuguero makes it one of the most wildlife-rich months in the country. Green sea turtles begin nesting at Tortuguero from late June through October — the largest green sea turtle nesting site in the Western Hemisphere. The Pacific rains are consistent but the “veranillo” (little summer) — a weather phenomenon that sometimes brings a 2–4 week dry spell to the Pacific in late June and early July — occasionally gives Pacific beach visitors a mid-season break. June is a month of wildlife and value.

Weather & Conditions

Guanacaste: 24–33°C. Rainy season, with possible veranillo dry break late June.

Manuel Antonio: 24–30°C. Consistent rain. Lush.

Arenal: 20–26°C. Heavy rain. Waterfalls at peak.

Caribbean coast (Tortuguero): 24–30°C. Rainy. Canals accessible regardless.

Osa Peninsula: 23–30°C. Heaviest rain of the year building. Wildlife excellent.

What to Do

Green sea turtle nesting, Tortuguero: Tortuguero National Park on the Caribbean coast hosts the largest green sea turtle nesting colony in the Western Hemisphere. The nesting season runs June–October, with peak activity in July–August. Female green turtles (some returning to the same beach where they hatched 25 years earlier) come ashore at night to lay eggs. The park operates a ranger-guided night tour system — visitors go in groups of 8–10 with a licensed guide who has radio contact with rangers monitoring active nests. The experience of watching a 150kg turtle nesting is extraordinary.

Tortuguero canal system: Tortuguero is accessible only by boat or small plane — no road access. The canal system that runs through the national park gives access to a lowland jungle river ecosystem: freshwater caimans, river otters, green iguanas, Jesus Christ lizards running on water, boat-billed herons, and all four monkey species. The guides who know the waterways deliver significantly better wildlife observation than self-guided canoe explorations.

Whitewater rafting, Pacuare River: June river levels on the Pacuare are at or near annual maximum — the Class III–IV rapids are fully charged. The multi-day Pacuare experience (2 days, camping in a jungle riverside lodge) is one of Costa Rica’s finest adventure travel options. June rates are competitive.

Veranillo Pacific window: The veranillo — a meteorological phenomenon caused by a temporary shift in the ITCZ (Intertropical Convergence Zone) — sometimes brings 2–4 weeks of dry Pacific weather in late June and early July. It’s not guaranteed every year, and its timing and duration vary. Guanacaste beaches during a veranillo have dry season conditions with green season prices. Check forecasts closer to departure.

Monteverde and hanging bridges: June cloud forest is at maximum humidity. The forest is exceptional — the biodiversity of the cloud forest is at its most concentrated, and the mist gives the forest a primeval quality. Resplendent quetzals are still present (post-nesting, before migration).

Festivals & Events

Corpus Christi and religious holidays (variable June): Catholic-calendar festivals are observed in Costa Rican communities.

Día del Boyero (last Sunday of June): The oxcart driver’s celebration in Escazú (San José suburb). Decorated oxcarts parade through the town — a UNESCO Intangible Cultural Heritage tradition.

Practical Tips

Tortuguero turtle tours: the park charges a regulated fee for night turtle tours. All tours go through licensed guides and park rangers — avoid informal operators offering “private” access. Book through lodges at Tortuguero (Tortuga Lodge, Aninga Lodge) or through San José-based operators. The lodges handle all logistics.

Tortuguero access: fly-in (Nature Air from San José, 30 minutes) or boat from Cariari or Puerto Viejo de Sarapiquí (2 hours through the canals). Most package tours use the boat route for the canal journey.

Veranillo uncertainty: don’t plan a Pacific beach trip around the veranillo without flexibility. It’s not predictable. Plan for rain and treat the veranillo as a bonus.

Pacuare rafting June: book through reputable operators (Ticos River Adventures, Hacienda Pozo Azul, Exploradores Outdoors). The multi-day option with jungle overnight lodge is worth the premium.

Who June Is For

Turtle season wildlife travelers who want Tortuguero’s nesting activity. Rafting enthusiasts at peak flow. Value travelers who may catch the veranillo Pacific break. Caribbean coast visitors for whom the rain doesn’t detract from the canal and forest experience. And travelers who want Costa Rica’s wildlife at its most concentrated, in exchange for accepting the green season’s rain.