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.