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Ko Samui Surf Forecast
/ Gulf of Thailand (13 surf breaks) /
Surf Forecasts:
Ko Samui surfForecast / Gulf of Thailand / Thailand
48hr Weather and Surf, issued 6 am Saturday 21 Mar 2026 +07Forecast update in hr min s Forecast update imminent
Ko Samui surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Ko Samui sea temperature is
28.9° C
(Which is normal for this time of year)| Time (+07) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Mar) | 1ft (0.3m) | 2s |
| Afternoon (21 Mar) | - | - |
| Evening (21 Mar) | 0.5ft (0.2m) | 2s |
Table - waves today at Ko Samui. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 21 | Sunday 22 | Monday 23 | Tue 24 | |||||||||||||||||||||
| 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | — | — | — | — | — | |||||||||||||||||||
| Period(s) (?) | 2 | 2 | 2 | - | - | - | 2 | 2 | - | 2 | 2 | 2 | 2 | 2 | 3 | 2 | 2 | - | 2 | 2 | 2 | 2 | 2 | 2 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | on | on | on | on | cross- on | cross- on | cross- on | cross- on | on | on | on | on | cross- on | cross- on | cross- on | cross- on | on | on | on | on | cross- on |
High Tide / height (m) | 1:20PM 0.64 | 1:10AM 1.03 | 2:57PM 0.49 | 1:41AM 1.19 | ||||||||||||||||||||
Low Tide / height (m) | 7:54AM 0.46 | 5:47PM 0.54 | 9:30AM 0.35 | 4:29PM 0.48 | 11:02AM 0.25 | |||||||||||||||||||
Saturday 21 | Sunday 22 | Monday 23 | Tue 24 | |||||||||||||||||||||
| Sunrise | - | 6:22 | - | - | - | - | - | - | - | 6:22 | - | - | - | - | - | - | - | 6:22 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:30 | - | - | - | - | - | - | - | 6:30 | - | - | - | - | - | - | - | 6:30 | - | - | - |
 |  | | | | | | | |  |  | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 27 |
| Feels °C (?) | 26 | 26 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 29 | 29 | 28 | 28 | 28 | 28 | 29 | 28 | 28 | 29 | 29 | 27 | 28 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Ko Samui surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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