High seas warning for waters far south of Jeju; waves up to 5 m ; caution over strong winds
- Input
- 2026-11-10 07:43:37
- Updated
- 2026-11-10 07:43:37

【Financial News Jeju = Jeong Yong-bok】 Waves are expected to reach up to 5 m on the 10th, with a high seas warning in effect for the waters far offshore south of Jeju Island. Strong wind advisories are also in effect in some parts of Jeju, requiring caution with vessel operations, fishing activities and coastal safety.
According to the Jeju Provincial Meteorological Administration on the 10th, a high seas warning is in effect for the waters far offshore south of Jeju Island, while high seas advisories are in effect for coastal waters off Jeju Island and the inner offshore waters to the southeast and southwest.
In the waters far offshore south of Jeju Island, strong northerly and northeasterly winds of 10–18 m/s are expected this morning, with waves of 2–5 m. Winds of 10–16 m/s and waves of 2–4 m are also forecast for the afternoon.
Wave heights in the inner offshore waters to the southeast and southwest of Jeju Island are expected to reach up to 4 m, while those in coastal waters off the island’s eastern, western and southern areas could reach up to 3.5 m. Waves of up to 2.5 m are forecast in the northern coastal waters as well.
On land, strong wind advisories are in effect for western and eastern Jeju City and western Seogwipo City. Strong northerly and northeasterly winds are expected, so people should take care of facilities and exercise caution along the coast.
The risk of safety accidents involving fishing boats and small vessels could rise in areas where high waves and strong winds coincide. People traveling by sea should check whether ferries are operating and review the latest weather alerts before departure.
Skies will be cloudy at times before clearing from the morning. The daytime high is expected to be 15–18°C, below the seasonal average.
Winds and waves are expected to gradually ease from the 11th. Wave heights off Jeju Island are forecast to fall to 0.5–2 m, while waves of up to 3 m are expected in the waters far offshore to the south through the morning.
On the 11th, the morning low will be 9–12°C and the daytime high 17–19°C. On the 12th, temperatures will rise gradually, with morning lows of 10–13°C and daytime highs of 18–20°C.
The Korea Meteorological Administration urged people to take care of their health because of the large day-to-night temperature difference through the 12th, and to check whether high seas warnings and advisories have been lifted.
[email protected] Jeong Yong-bok Reporter