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

Gulf of Thailand Weather Forecast (Samui/Pha Ngan/Tao/Surat Thani) May 21–26, 2025.

Wednesday, May 21

Temperature: High 33°C / Low 27°C
Weather: Isolated morning thunderstorms; clearing later
Waves: ~0.1 m
Tides: High at 3:52 AM (2.24 m); Low at 3:01 PM (0.9 m)

Thursday, May 22

Temperature: High 33°C / Low 27°C
Weather: Partly cloudy
Waves: ~0.2 m
Tides: High at 4:37 AM (2.04 m); Low at 2:53 PM

Friday, May 23

Temperature: High 33°C / Low 27°C
Weather: Afternoon rain
Waves: ~0.3 m
Tides: High at 5:29 AM (1.79 m); Low at 2:15 PM (1.15 m); High at 9:51 PM (1.62 m)

Saturday, May 24

Temperature: High 32°C / Low 27°C
Weather: Morning rain; afternoon thunderstorms
Waves: ~0.3 m
Tides: Low at 4:14 AM (1.45 m); High at 6:41 AM (1.51 m); Low at 1:22 PM (1.21 m);

Sunday, May 25

Temperature: High 31°C / Low 27°C
Weather: Widely scattered thunderstorms; windy afternoon
Waves: ~0.4 m
Tides: Low at 5:44 AM (1.18 m); High at 9:09 AM (1.25 m); Low at 12:56 PM (1.19 m); High at 9:47 PM (2.17 m)

Monday, May 26

Temperature: High 32°C / Low 27°C
Weather: Morning rain; cloudy afternoon
Waves: ~0.3 m
Tides: Low at 6:44 AM (0.94 m); High at 10:19 PM (2.42 m)