Costa Rica Weather in August

Planning a trip to Costa Rica in August? You’re not alone. While many travelers shy away from the rainy season, savvy adventurers know that Costa Rica’s green season — especially August — is a hidden gem for exploring lush landscapes, vibrant wildlife, and authentic cultural experiences, all with fewer crowds and better prices.

Whether you’re chasing waves in Tamarindo, watching sea turtles nest in Tortuguero, or hiking cloud forests in Monteverde, August offers a unique blend of adventure and tranquility.

What is the Weather Like in Costa Rica in August?

August is part of Costa Rica’s rainy season, which runs from May to November. However, the weather is far from gloomy. In fact, mornings are often sunny and bright, with showers typically rolling in during the afternoon or evening. The key to enjoying August weather is planning your activities in the first half of the day.

Temperatures range between 70°F (21°C) to 90°F (32°C) depending on the region. The Pacific Coast, including Guanacaste and Nicoya Peninsula, enjoys warmer and drier conditions compared to the South Pacific and Central Valley, where rain becomes more prevalent later in the month.

On the Caribbean coast, areas like Puerto Viejo and Cahuita start to experience a mini dry season, locally known as “veranillo” — a short-lived, drier spell that sometimes extends into early August.

Why Visit Costa Rica in August?

Low Season Travel, High Value
August falls within Costa Rica’s low season, also called the green season. This means better hotel availability, fewer crowds at popular tourist spots, and savings of 20–30% on accommodations and tours. It’s a sweet spot for budget-conscious travelers, nature lovers, and anyone who prefers quieter beaches and national parks.

Lush Green Landscapes
The frequent rain nourishes Costa Rica’s landscapes, making waterfalls thunderous, forests vivid, and wildlife more active. Arenal Volcano, La Fortuna, and Monteverde Cloud Forest are particularly breathtaking during this time of year, blanketed in lush, misty green.

Wildlife Encounters
August is peak season for turtle nesting in Tortuguero National Park, where thousands of green sea turtles come ashore to lay eggs. This is one of the most awe-inspiring natural phenomena in the world. Turtle night tours must be booked in advance and are guided by certified local naturalists.

In addition to turtles, travelers can also spot howler monkeys, sloths, scarlet macaws, and other exotic wildlife in Manuel Antonio, Corcovado, and Gandoca-Manzanillo Wildlife Refuge.

Where to Go in August

Northwest Costa Rica (Tamarindo, Nosara, Santa Teresa)
Thanks to the veranillo effect, this region remains relatively dry in early August, with temperatures ranging from 80–90°F (27–32°C). Surf conditions are excellent in Tamarindo, and the beaches are less crowded than in peak season. Santa Teresa offers an ideal blend of surf, yoga, and laid-back beach vibes.

Caribbean Coast (Tortuguero, Cahuita, Puerto Viejo)
Unlike the Pacific side, the Caribbean coast starts to dry out in August. This makes it a perfect time to visit Tortuguero, not just for turtle nesting, but also for tranquil canal boat rides and birdwatching. In Puerto Viejo, you’ll discover a vibrant Afro-Caribbean culture, delicious food, and top snorkeling spots in Cahuita National Park.

Central Pacific (Manuel Antonio, Uvita, Jacó)
Expect daily afternoon rain, but with mostly sunny mornings. Manuel Antonio National Park offers great opportunities for wildlife viewing and hiking. Uvita, known for the Whale’s Tail beach, is getting wetter as the month progresses, so plan early-morning beach time and afternoon relaxation.

South Pacific (Osa Peninsula, Corcovado)
This is the wettest region in August. While Corcovado National Park is still open for adventurous travelers, expect heavy rain and muddy trails. On the upside, the rainforest is alive with activity, and lodges offer frog watching night tours, where you can spot glass frogs, red-eyed tree frogs, and more.

Central Valley (San José, Arenal, Monteverde)
The Central Valley, including San José, Poas Volcano, and Arenal, sees moderate rainfall with cooler temperatures around 75°F (24°C). Monteverde Cloud Forest is particularly magical in August with misty canopies, hanging bridges, and thriving biodiversity.

Festivals and Cultural Events in August

August in Costa Rica isn’t just about nature — it’s also rich in culture:

• Virgen de Los Angeles Day (August 2): The biggest religious event in Costa Rica. Over 1 million pilgrims walk to Cartago to honor La Negrita, the country’s patron saint.
• Mother’s Day (August 15): A national holiday where families celebrate with feasts, gifts, and time off work.
• Afro-Caribbean Culture Day (August 31): Held in Limón, this event celebrates Costa Rica’s vibrant Caribbean heritage with music, parades, and Caribbean cuisine.

Things to Do in Costa Rica in August

Whitewater Rafting
With rivers at peak flow, August is ideal for whitewater rafting, especially on the Pacuare River and Sarapiquí River. These are world-class rafting spots for adrenaline seekers.

Surfing
Both coasts offer great surf conditions. On the Pacific side, Tamarindo and Nosara attract consistent swells. On the Caribbean, Puerto Viejo’s Salsa Brava becomes more active.

Mangrove Kayaking
Raised water levels make mangrove kayaking especially rewarding. Top spots include Damas Island Estuary near Quepos and Tamarindo Estuary, home to birds, crocs, and monkeys.

Volcano Hiking & Hot Springs
Arenal Volcano National Park offers scenic hikes through lava fields and lush rainforest. After your trek, unwind in the area’s natural hot springs, which are even more inviting in rainy weather.

Frog-Watching Night Tours
The humid August nights are ideal for amphibian spotting. Guided night tours around Monteverde and La Fortuna reveal red-eyed tree frogs, glass frogs, and even tarantulas.

Travel Tips for Visiting Costa Rica in August

• Pack smart: Bring quick-dry clothes, a lightweight rain jacket, hiking boots, insect repellent, and a waterproof backpack. Consider a travel clothesline and dry bags.
• Start early: Most activities are best enjoyed in the morning, before rain sets in.
• Drive carefully: Roads, especially in mountain and jungle areas, may become muddy or prone to landslides. Rent a 4×4 and monitor weather alerts from Costa Rica’s National Emergency Commission.
• Book early: for turtle tours and Caribbean accommodations, as they can fill up despite the low season.

Final Thoughts

Costa Rica in August is far from a travel compromise — it’s an opportunity to experience the country at its most vibrant, peaceful, and affordable. With manageable rain, unforgettable wildlife moments like turtle nesting, and the lushest landscapes of the year, it’s a fantastic time to embrace the spirit of Pura Vida.

Whether you’re surfing Tamarindo, hiking Arenal, or exploring the canals of Tortuguero, Costa Rica’s green season welcomes you with open arms.