Traveling to Costa Rica in September and October offers a unique blend of tranquility, natural spectacle, and cultural depth—without the high-season crowds. For the right kind of traveler, this makes it an appealing time of year to visit, despite being part of the “rainy season” on the Pacific coast.
Unlike the Pacific side of Costa Rica, the Caribbean coast typically experiences drier weather during September and October. It’s also a great time to visit for nature enthusiasts seeking unique wildlife experiences: turtle nesting season in Tortuguero lasts from July to October, while the South Pacific coast becomes a theater for one of nature’s greatest shows—humpback whale watching. Whether you’re relaxing on serene beaches, trekking through rainforests, or spotting wildlife from the sea, Even in the green season, Costa Rica offers a rich and rewarding travel experience.
Why Visit Costa Rica in September & October?
Best Weather on the Caribbean Coast
While much of the Pacific experiences more rain, parts of the Caribbean region—including Tortuguero, Puerto Viejo, and Cahuita— typically enjoy slightly drier weather during these months.
Whale Watching on the Pacific
September and October are peak months for humpback whale watching, especially along the South Pacific coast in places like Uvita and Marino Ballena National Park. These months coincide with the migration of Southern Hemisphere humpback whales, who arrive to give birth in the warm waters.
Lush Greenery Everywhere
Costa Rica’s rainforests are at their most alive in the green season. The countryside bursts with color—deep greens, blooming flowers, and thriving wildlife create postcard-perfect scenery at every turn.
Turtle Nesting in Full Swing
September and October are peak months for sea turtle nesting on the Caribbean shores. Visit Tortuguero National Park to witness green sea turtles laying eggs—a once-in-a-lifetime experience that often happens at night with local guides.
Fewer Tourists, Peaceful Vibes
This is still considered low season, so you’ll enjoy vibrant trails, quiet beaches, and better availability at boutique hotels and eco-lodges. It’s ideal for travelers seeking a serene escape.
Lower Prices
With lower demand, you’ll often find discounted prices on hotels, flights, and tours. Enjoy luxury eco-lodges or beachfront bungalows for a fraction of the price you’d pay in high season.
Best Places to Visit
Tortuguero National Park (Caribbean)
Accessible only by boat or plane, Tortuguero is a wildlife lover’s paradise. In addition to sea turtles, you’ll find monkeys, toucans, and crocodiles in the winding canals of this protected area. Both Tortuga Lodge and Manatus Hotel offers a premium base for exploring the area.
Puerto Viejo & Playa Chiquita (Caribbean)
Located on the southern Caribbean coast, Puerto Viejo blends Afro-Caribbean culture, vibrant food, reggae rhythms, and stunning beaches. Stay at Hotel Aguas Claras, an elegant retreat just steps from Playa Chiquita.
Cahuita National Park (Caribbean)
Home to coral reefs and coastal rainforest, Cahuita offers easy hikes with high chances of spotting sloths, monkeys, and colorful frogs—all just a short drive from Puerto Viejo.
Uvita & Marino Ballena National Park (Pacific)
Home to the famous Whale’s Tail sandbar, this southern Pacific gem is ground zero for humpback whale watching in September and October. Daily boat tours offer the chance to see mothers and calves breaching close to shore. Stay at Kura Boutique Hotel if you’re looking for a luxurious stay in the area.
Things to Do
Watch Sea Turtles Nest or Hatch
Green season months coincide with nesting and hatching seasons for sea turtles in Tortuguero, offering a rare and magical wildlife experience.
Whale Watching on the Pacific
Set out on a morning tour in Uvita to see humpback whales breaching and tail-slapping as they nurture their young in warm Pacific waters.
Relax on Calm Caribbean Beaches
The Caribbean side enjoys slightly drier weather in the fall, making it perfect for peaceful beach days and warm ocean swims.
Snorkel reefs in Cahuita
Clearer waters and calmer seas in fall make it ideal for snorkeling among vibrant coral reefs and tropical fish in Cahuita National Park.
Explore local culture & cuisine
Visit local markets, try Caribbean specialties like rice and beans with coconut milk, or enjoy live calypso and reggae music in Puerto Viejo.
Discover national parks with fewer people
Whether it’s in Cahuita, Tortuguero, or Marino Ballena, rainforest regions are greener, wilder, and much less crowded.
Enjoy yoga retreats or wellness spas
Fall brings a peaceful atmosphere to Costa Rica’s many retreat centers and spas, perfect for deep relaxation and personal renewal.
What to Pack
Even on the sunny Caribbean side, occasional showers are still possible, and the Pacific coast can be wetter—so pack for variety:
- Lightweight, waterproof jacket
- Quick-dry clothing & breathable layers
- Waterproof hiking sandals or shoes
- Swimsuit & reef-safe sunscreen
- Insect repellent (especially near mangroves)
- Dry bag for electronics
- Binoculars for whale and wildlife spotting
- Flashlight or headlamp for night tours
Vacations Featuring the Caribbean & South Pacific
Caribbean Itineraries
South Pacific Itineraries
Low Season Promotional Itineraries
Final Thoughts
September and October may be Costa Rica’s best-kept secret. With whale watching on the South Pacific coast, sea turtle nesting in Tortuguero, and a peaceful, uncrowded atmosphere throughout, these months offer rare and beautiful experiences that few travelers get to witness. Whether you’re snorkeling coral reefs, watching whales breach offshore, or just swinging in a hammock with a fresh coconut in hand—fall in Costa Rica is pure magic.
