Weather and Tide Forecast for the Gulf of Thailand (Samui/Phangan/Tao/Surat Thani)

Gulf of Thailand Weather Forecast (Samui/Phangan/Tao/Surat Thani) August 26 to 31 August, 2025.

Tuesday, August 26
Temperature: 31–25 °C
Weather: Heavy rain, 60% of area
Sailing Conditions: Rough, waves 1.5–2 m
High Tide: 00:55 (~2.04 m), 14:18 (~1.61 m)

Wednesday, August 27
Temperature: 32–26 °C
Weather: Heavy rain, 40% of area
Sailing Conditions: Moderate to rough, waves 1.5–2 m
High Tide: 01:20 (~1.87 m), 14:26 (~1.76 m)

Thursday, August 28
Temperature: 33–26 °C
Weather: Heavy rain, 40% of area
Sailing Conditions: Moderate, waves 1.2–1.8 m
High Tide: 01:40 (~1.69 m), 14:39 (~1.90 m)

Friday, August 29
Temperature: 33–26 °C
Weather: Heavy rain, 40% of area
Sailing Conditions: Moderate, waves 1.2–1.8 m
High Tide: 02:02 (~1.52 m), 15:02 (~2.00 m) (estimated based on tidal cycle)

Saturday, August 30
Temperature: 33–26 °C
Weather: Heavy rain, 40% of area
Sailing Conditions: Moderate, waves 1.2–1.5 m
High Tide: 02:25 (~1.40 m), 15:28 (~2.08 m) (estimated)

Sunday, August 31
Temperature: 33–26 °C
Weather: Heavy rain, 40% of area
Sailing Conditions: Moderate, waves 1.2–1.5 m
High Tide: 02:52 (~1.35 m), 15:59 (~2.15 m)