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Daebudo Island

A tidal-flat island on the Gyeonggi coast, joined to the mainland by a sea road, with clam villages and long mudflats at low water.

Updated 25 August 2026

Typeisland
WhereGyeonggi
Nearest cityAnsan; Seoul about 90 minutes
Best seasonApril to June and September to October
Time to allowA day
Getting thereAnsan, Gyeonggi; bus from Seoul or car across the Sihwa sea wall road
EntryFree; clam digging and facilities charge

Daebudo stopped being an island in the 1990s, when the Sihwa tidal embankment linked it to the mainland by road, and it has been Seoul's nearest west-coast escape ever since. The west coast here has one of the largest tidal ranges in the world - several metres - so the character of the place changes through the day: at high water it is a coastline of small beaches and boats, and at low water the sea withdraws for hundreds of metres and leaves grey mudflat where families go out in boots with rakes to dig clams, which is the main activity and is organised by the village fishing cooperatives with set times and fees. Around the island are wineries using local grapes, a long coastal walking trail, seafood restaurants at Bangameori, and the Sihwa tidal power station on the wall. Jebudo, with its tidal causeway, is a short drive south.

The landscape

  • The tidal flats - hundreds of metres of mud at low water.
  • The clam digging - village-run sessions with rakes and boots.
  • The sea wall road - the embankment linking the island.
  • The seafood villages - Bangameori and the harbour restaurants.

When to go

April to June and September to October. Everything depends on the tide table - check it before setting out, since clam digging only happens on the ebb.

Good to know

Mudflats are deep, sticky and easy to get stuck in - go with a village session rather than alone, and heed the returning tide. The island is developed rather than wild. Weekend traffic on the sea road is heavy.

Nearby

Jebudo and its causeway are south; Incheon and Muuido are north up the coast.

Key facts

Local name대부도 (Korean)
Area42 km² (16 sq mi)
Location37.2667° N, 126.5833° E · map

Source: Wikidata, item Q509539, read on 18 October 2026.

What to pack for Daebudo Island

Chosen from what this place is for. Tap a kit for the full checklist.

  • Broken-in walking shoes or boots - Grip and ankle support matter more than looks; never hike in brand-new boots. Find on Amazon
  • Travel rod + reel - A packable multi-piece rod fits in a case and covers most holiday fishing. Find on Amazon
  • Reef-safe sunscreen - High SPF that will not bleach the coral you are swimming over. Find on Amazon
  • Layers + a waterproof shell - Mountain weather turns fast; a packable rain jacket saves the day. Find on Amazon

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Opening times, ticket prices and seasonal closures change - check the official source before you go: official site.

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