Osa & the far south · Costa Rica
Surfing Rio Sierpe Rivermouth
A beach break in Osa & the far south, Costa Rica, for intermediate and advanced surfers.
The Rio Sierpe rivermouth is on the way to Drake Bay, in the north of the Osa Peninsula, and can only be reached by boat through the mangroves. On an incoming tide with a solid south-west swell, the sandbanks produce long, strong lefts and rights.
The banks move with the river, so the quality changes a lot. Accommodation in the area is scattered and expensive, and you need to arrange boat transport, but you'll almost never share it.
It's only reachable by boat and only works on a solid south-west swell with an incoming tide, so it's usually done on a boat trip with a local guide. Crocodiles live in the river, so don't surf it without someone who knows it.
When to surf
Rio Sierpe Rivermouth
Rio Sierpe Rivermouth is at its best from May to November. Conditions it likes: S-SW swell, incoming tide.
December to April: Good
Short dry season, cleaner, sunnier, but smaller than the summer swell
May to July: Prime
Green season S-SW groundswell fires Dominical and the points; offshore mornings
August to October: Prime
Peak, most consistent S-SW swell, and the wettest, greenest months
Nov: Quiet
Transition, heavy rains and swell easing into the dry season
The year across Central Puntarenas
Waves near Rio Sierpe Rivermouth
Getting there
Where to stay: This is remote, expensive, expedition territory, reach Drake Bay by boat from Sierpe or a rough drive. Book lodges well ahead and bring everything for the rivermouth spots (Sierpe, Rio Claro), which need boats, camping gear and self-sufficiency. Not a casual surf mission.
Transport, costs, where to stay and the rest of the waves in the area are in the Osa & the far south guide.
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