Ko Samui surf forecast from 7 Sep 2026:
- Most powerful swell: Monday 7 Sep, 4PM (local time) - 1.5ft (0.4m), 6s period, SE swell with 9 kJ wave energy.
Best Forecast Surf Conditions for Ko Samui this week:
The most powerful waves expected at Ko Samui in the next 16 days are 0.4m 6s and forecast to arrive on Monday (Sep 07) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Tuesday (Sep 08) at 7PM.
| Wave Type | Time (+07) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Mon 7th Sep) | 1.5ft (0.4m) 6s |
Table - best surf conditions forecast for Ko Samui over the next 16 days.
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Nearest