Red flags raised as strong winds batter Samui

2026-02-19 - 09:23

KOH SAMUI — 19 February 2026, Strong winds and rough seas in the Gulf of Thailand prompted authorities to raise red flags along major tourist beaches on Koh Samui on Thursday, banning swimming along the entire shoreline for safety reasons. A survey of Chaweng and Lamai beaches, two of the island’s most popular destinations, found waves measuring about 1-2 metres, crashing ashore with force and leaving long stretches of white foam. Lifeguards and hotel operators jointly raised red flags to warn visitors of dangerous conditions and urged them to refrain strictly from entering the water due to the risk of strong currents and rip currents. Despite the rough weather, some tourists continued to relax on the beaches, opting to use deck chairs and sit under trees to enjoy the scenery instead. Beachfront shops and hotels remained open as usual, operating under close monitoring. The Meteorological Department and local weather stations said the strong winds were caused by a cold air mass spreading over the Gulf of Thailand, triggering a convergence of easterly and southeasterly winds. The phenomenon intensified sea conditions, particularly during thunderstorms, when waves could exceed 2 metres. Ferry services to and from Koh Samui continued to operate as normal, though delays were possible. However, operators of small boats and speedboats running routes to Koh Tao and Koh Nang Yuan were advised to exercise increased caution or avoid leaving shore during this period. Strong winds and waves are forecast to persist until 20-21 February, with conditions expected to ease over the weekend. Authorities urged tourists to closely follow official announcements and strictly observe red-flag warnings to ensure safety of life and property.