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Weather and Tide Forecast for the Gulf of Thailand (Samui/Phangan/Tao/Surat Thani)
Gulf of Thailand Weather Forecast (Samui/Phangan/Tao/Surat Thani) 16 to 21 September, 2025.
Tuesday, September 16
Temperature: 32–26 °C
Weather: Heavy rain, 60% of area
Sailing Conditions: Winds ~13 km/h, moderate seas
Tide: Low tide morning, high evening
Wednesday, September 17
Temperature: 33–26 °C
Weather: Heavy rain, 40% of area
Sailing Conditions: Winds ~13 km/h, choppy seas possible
Tide: Low tide morning, high evening
Thursday, September 18
Temperature: 33–26 °C
Weather: Heavy rain, 40% of area
Sailing Conditions: Winds ~15 km/h, moderate to rough seas
Tide: Low tide morning, high late evening
Friday, September 19
Temperature: 32–26 °C
Weather: Heavy rain, 60% of area
Sailing Conditions: Winds ~15 km/h, rough seas at times
Tide: Low tide early morning, high at night
Saturday, September 20
Temperature: 33–26 °C
Weather: Heavy rain, 40% of area
Sailing Conditions: Winds ~17 km/h, unsettled seas
Tide: Low tide morning, high late night
Sunday, September 21
Temperature: 33–26 °C
Weather: Heavy rain, 40% of area
Sailing Conditions: Winds ~17 km/h, moderate seas
Tide: Low tide morning, rising afternoon
Disclaimer: Weather, sea conditions, and tide information are subject to change. Always check local updates and forecasts before planning activities.
