Geoje tide times

Geoje is South Korea's second-largest island (after Jeju), connected to the mainland by bridges south of Busan, in the sheltered Korea Strait. The island is one of the world's largest shipbuilding centres — the Daewoo Shipbuilding & Marine Engineering (DSME) and Samsung Heavy Industries yards occupy large sections of the north coast. The south coast, however, is rugged and scenic: the Hallyeohaesang National Park on the south and west shores has the sea caves, cliffs, and the azalea-covered headlands that most people associate with Geoje. Tidal pattern is semidiurnal with a mean spring range of about 1.8 metres.

Oedo Botania (or Oedobotseom) is a tiny island (1.7 km²) south of Geoje that has been transformed into a botanical garden since 1976 — palm trees, cacti, and temperate plants fill the terraced island landscape, with the Korea Strait visible in every direction. Day boats from Geoje's Jangseungpo and Hak-dong ferry terminals take 30 to 40 minutes. The ferry schedule is tide-coordinated.

The Hakdong Mongdol Beach on the south coast is one of the few gravel and black stone beaches in Korea — the distinctive dark rounded stones give it a visual character unlike sand beaches. Swimming is calm (the south coast is sheltered from the main Korea Strait current by the island chain); the gravel bottom makes the water run clear even in mild chop.

Fishing on Geoje is a mix of inshore and offshore: sea bream (doomifish), red sea bream (domi), and flounder in the channels between the island and the mainland; offshore trolling for yellowtail (bangeodomi) and amberjack. Shore fishing from the rocky headlands of the south coast targets rock bream and smallmouth bass at low water. A Korean fishing licence is required for most recreational fishing.

The Geoje POW Camp (preserved from the Korean War, 1950–53) is one of the key historical sites on the island — the camp housed North Korean and Chinese prisoners; the 1952 prisoner uprising here became an international incident that affected armistice negotiations. The site is now a museum with reconstructed barracks and a detailed historical interpretation.

Predictions on this page come from Open-Meteo Marine, a gridded global ocean model. Accuracy is typically within plus or minus 45 minutes on timing and 0.2 to 0.3 metres on height — model-derived, not from a local gauge. For Korean tide data, consult the Korea Hydrographic and Oceanographic Agency at khoa.go.kr.