Osa Peninsula & Corcovado Travel Guide (2026)

• Annual rainfall: 4,000–6,000 mm (one of the wettest places in Costa Rica) • Temperature: 24–32 °C, humidity 85–95% • **Driest months:** January–March (still some afternoon showers) • **Wettest months:** September–November (full days of rain, some lodges close) • **Whale season:** mid-July to October (humpback whales in Marino Ballena) The rain is what makes Osa's rainforest so spectacular — and you should plan for it.

• **Corcovado National Park:** jaguars, tapirs, scarlet macaws — guided entry mandatory • **Drake Bay:** main gateway to Corcovado, snorkeling at Caño Island • **Puerto Jiménez:** the peninsula's main town, scarlet macaws in the streets • **Marino Ballena National Park (Uvita):** whale-tail beach formation, humpback whale watching • **Dominical:** surf town, gateway to waterfalls (Nauyaca) • **Sierpe & Térraba mangroves:** crocodiles, mangrove tours

• Heavy-duty rain jacket and rain pants — light rainwear is not enough here • Quick-dry hiking pants and long-sleeve shirts (mosquito and chigger protection) • Knee-high gaiters or rubber boots for jungle hikes (often provided by lodges) • Strong DEET repellent (35–50%) • Dry bags for cameras and electronics • Headlamp + spare batteries (lodges run on solar, lights go out) • Quick-dry towel • Probiotic / electrolyte sachets — heat exhaustion is real on Corcovado hikes • Travel-size first aid kit • Cash — there is no ATM at Drake Bay or inside Corcovado

• **January–April:** driest, easiest hiking, full lodge availability • **July–October:** whale watching season + lush jungle • **September–November:** wettest, some lodges close — avoid unless you're a serious naturalist

• Fly to Drake Bay or Puerto Jiménez from San José (35 min) — recommended • Drive from San José: 6–7 hours via Costanera • Boat from Sierpe to Drake Bay: scenic mangrove ride (1 hour)

If you're driving south, the rainforest around Esquipulas offers a worthwhile birding stop to break up the long journey before or after Osa.