Navigational Caution Notice Issued for Gulf of Thailand

Mariners, beware! From January 22-25, 2026, the southern Gulf of Thailand expects scattered thunderstorms, strong winds, and waves up to 2 meters. Smaller boats should stay ashore, and all vessels must exercise extreme caution, always checking forecasts and gear.

Overview of Weather Impact

From January 22 to 25, 2026, the Gulf of Thailand, especially the southern region, is forecasted to experience scattered thunderstorms due to the intensification of the northeast monsoon. The impact of this weather system will result in stronger winds and higher waves across the area, with the lower Gulf expecting wave heights of approximately 2 meters. In areas where thunderstorms occur, waves may exceed this height.

Beginning January 23 and extending through January 28, the weather conditions will gradually improve, with winds weakening. However, scattered thunderstorms are still expected in the South. During this period, wave heights in the lower Gulf will range from 1 to 2 meters, but they can still rise above 2 meters in areas affected by storms.

Safety Guidelines for Mariners

Vessel Size Recommendations

Boats shorter than 9 meters: These vessels are strongly advised not to leave shore during the warning period due to the heightened risk posed by high waves and strong winds.
Boats longer than 9 meters: Larger boats may proceed, but operators are urged to exercise extreme caution, particularly when navigating near areas with thunderstorm activity.

Essential Precautions Before Departure

Engine and Equipment Check: Ensure that the engine and all onboard communication devices are in optimal working condition prior to departure.
Weather Updates: Always verify the latest weather forecast before setting out to sea to avoid hazardous conditions.

Emergency Contact Information

Hotline: In case of emergencies while at sea, mariners can contact the 24-hour emergency hotline at 1199.
Regional Marine Office: The Koh Samui Regional Marine Office can be reached at 077-426157 for additional guidance or support.

Regional Context and Additional Considerations

The monsoon season in the Gulf of Thailand is known for rapidly changing weather, including sudden thunderstorms and high waves, which can create dangerous conditions for all marine activities. Local authorities regularly issue safety notices to protect both commercial and recreational mariners.

Marinas, fishing ports, and tourism operators in Koh Samui and neighboring provinces are advised to monitor updates from the Marine Office and local meteorological services. Special attention should be paid to the operation of ferries, tour boats, and cargo vessels during this period, as passenger and crew safety is the top priority.

Recommended Preparations for Marine Operators

Crew Training: Ensure all crew members are briefed on emergency protocols and life-saving equipment usage.
Life-Saving Equipment: Verify that life jackets, rafts, and emergency beacons are accessible and in good condition.
Communication: Maintain continuous communication with coastal authorities and monitor marine radio frequencies for real-time updates.

Collaborative Efforts

Local government and marine authorities collaborate in disseminating safety information, conducting patrols, and providing assistance during adverse weather. Mariners are encouraged to report any incidents or sightings of hazards to aid in the timely response and support of rescue operations.

This navigational caution notice aims to minimize risks to life and property while maintaining the safety and security of maritime operations in the Gulf of Thailand during the forecasted period.

Frequently Asked Questions

Frequently Asked Questions (FAQ)

What are the main weather hazards in the Gulf of Thailand from January 22-25, 2026?

During this period, the southern Gulf of Thailand will experience scattered thunderstorms, strong winds, and waves up to or exceeding 2 meters, especially in areas affected by storms. These hazardous conditions are due to the intensification of the northeast monsoon.

Who should avoid going to sea, and what precautions are recommended?

Boats shorter than 9 meters are strongly advised to remain ashore during the warning period. Larger vessels should proceed with extreme caution - check your engine and communication equipment, stay updated with the latest weather forecasts, and always be prepared for emergency situations.

What resources and contacts are available for mariners during the warning period?

In case of emergencies at sea, mariners can contact the 24-hour emergency hotline at 1199 or reach the Koh Samui Regional Marine Office at 077-426157. Mariners should also regularly monitor marine radio and updates from local authorities for the latest safety information.