Synoptic Situation
16 September 2025
The moderated southwest monsoon prevailing over the Andaman Sea, the South, and the Gulf of Thailand is strengthening with isolated heavy rain. The moderated wind forces the waves in the upper Andaman Sea are likely about 2 meters high, 1-2 meters high in the lower Andaman Sea and above 2 meters high in thundershowers. All ships should proceed with caution and keep off thundershowers.
Announcement Date 16 September 2025 13:00
24-Hour Weather Forecast for Shipping
The Gulf of Thailand
Fairly widespread thundershowers and isolated heavy rain.
Southwesterly winds 8-16 knots or 15-30 km./hr.
Wave height about 1 meter and above 2 meters in thundershowers.
The Andaman Sea and Malacca Strait
Fairly widespread thundershowers and isolated heavy rain.
Upper Part: Southwesterly winds 11-18 knots or 20-35 km./hr.
Wave height about 2 meters and above 2 meters in thundershowers.
Lower Part: Southwesterly winds 8-18 knots or 15-35 km./hr.
Wave height 1-2 meters and above 2 meters in thundershowers.
Kotabaru to Singapore Route
Scattered thundershowers and isolated heavy rain.
Southwesterly winds 8-16 knots or 15-30 km./hr.
Wave height about 1 meter and above 2 meters in thundershowers.
Tip of Indochina
Fairly widespread thundershowers and isolated heavy rain.
Variable winds 8-16 knots or 15-30 km./hr.
Wave height about 1 meter and above 2 meters in thundershowers.
Announcement Date 16 September 2025 13:00