The air at the mouth of the Urdaibai estuary smells of wet sand, low tide, and diesel from the day-boat outboards. Mundaka is small and built on rock. Surfers come here from everywhere for the heavy left-hand sandbar wave that breaks past the harbor wall when autumn swells hit. Non-surfers stand on the terrace by the Ermita de Santa Catalina with a glass of crisp Hondarrabi Zuri, watching water drain out of the bay while fishermen mend nets on the quay.
Last updated 22 Aug 2026






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Mundaka is a compact fishing settlement anchored to the edge of the Urdaibai estuary. Days here follow the rhythm of the ocean: incoming tides, boat traffic returning to Puerto Chico, and swell reports. It suits independent travelers who prefer unvarnished maritime life, coastal walking paths, and quiet tavern counters over resort infrastructure.
Morning starts with café con leche by the harbor and a walk to Santa Catalina headland. By midday, order grilled hake and a bottle of Txakoli at an outdoor table on Calle Mayor. Spend the afternoon taking the five-minute ferry across the channel to Laida beach before evening pintxos in the port. Select 1 Day above to see it.
A second day gives you time to catch the morning Euskotren to neighboring Bermeo. Walk the steep harbor of old fishermen's tenements, then stop for salted anchovies and marmitako stew. Return to Mundaka by late afternoon to watch the evening surf set roll past the estuary bar. Choose 2 Days to expand the plan.
With three days, head inland into the Urdaibai valley to explore the Monday market and oak tree of Gernika, or hike the wooded track up to San Pedro de Atxarre. Finish with a slow dinner of wood-roasted turbot at an asador in the hills above the coast.
Look for grilled chipirones pelayo cooked in their own ink, whole besugo over charcoal, and barnacles pulled from outer rocks, ordered at dockside taverns right by Puerto Chico.
The famed left-hand rivermouth wave barrels over a shifting sandbar at the mouth of the estuary. Peak conditions arrive with autumn low-pressure systems and an outgoing tide.
Walk the cliff path to the 19th-century Santa Catalina hermitage, then continue toward Laidatxu beach to watch water flood across the salt flats of the Urdaibai Biosphere.
Pour green-tinged D.O. Bizkaiko Txakolina from high above the glass. These bone-dry, acidic whites pressed from Hondarrabi Zuri grapes grow on steep coastal hillsides around Bakio.
Take the pedestrian ferry across to Laida beach to explore the Urdaibai wetlands, where tidal mudflats host migrating spoonbills, curlews, and ospreys on their southern flight.
Cobbled alleys wrap around the 16th-century Church of Santa María, built right against the ocean swells, preserving centuries of Basque seafaring and shipbuilding heritage.
Puerto Chico dries out almost completely at low tide. Pull up a stool at a quay wall bar to watch locals tie off wooden txalupas and clean hake fresh from the Cantabrian Sea.
Catch the local Euskotren south to Gernika to visit the Monday livestock market and historic assembly house, or head north to the busy tuna port of Bermeo in under ten minutes.
Stand at the bar counter for gilda skewers of anchovy, olive, and pickled piparra pepper, washed down with a zurito of draft beer or a glass of dry sidra poured with a splash.
Climb through maritime pine forests up Mount Sollube or Mount Atxarre for open views looking down over the entire Urdaibai estuary, its sandbanks, and the open Atlantic.
Laidatxu offers calm, sheltered bathing inside the harbor mouth, while the expansive sandbars of Laida and Laga across the river face the full energy of Biscay waves.
Check the municipal frontón for evening pelota vasca matches, or watch rowing crews drill long trainerillas through the estuary channels when the tide runs slack.