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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 Tuesday 17 Jun 2025 +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
30.3° C
(Which is slightly warmer than usual)How big are the waves at Ko Samui today?
The current surf forecast for Ko Samui at 9AM is: 0.1m 4s primary swell from a Southeast direction (forecast issued at 06:00am June 17). The wind direction is predicted to be cross-offshore.
| Time (+07) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Jun) | 0.5ft (0.1m) | 4s |
| Afternoon (17 Jun) | 0.5ft (0.1m) | 6s |
| Evening (17 Jun) | - | - |
Table - waves today at Ko Samui. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 17 | Wednesday 18 | Thursday 19 | Friday 20 | Saturday 21 | Sunday 22 | Monday 23 | Tuesday 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 | 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 | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Swell Height Map |    |    |    |    |    |    |    |    | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Wave Height (m) & direction (?) | — | — | — | — | — | — | — | — | — | — | — | |||||||||||||||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 4 | 4 | - | - | 6 | - | - | - | 4 | 4 | - | - | - | - | 2 | 2 | 4 | 2 | 2 | - | - | 3 | 3 | 3 | 2 | 2 | 5 | 5 | 2 | 3 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 3 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Energy (?) | 2 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 2 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | cross- off | off | cross- off | cross- off | off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | off | off | off | off | off | off | cross- off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 2:08AM 1.33 | 2:38AM 1.21 | 3:02AM 1.05 | 2:54AM 0.85 | 8:28PM 0.87 | 8:13PM 1.05 | 8:32PM 1.24 | 9:05PM 1.40 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Low Tide / height (m) | 12:10PM 0.09 | 12:20PM 0.17 | 12:16PM 0.27 | 11:52AM 0.35 | 11:01AM 0.38 | 9:33AM 0.31 | 8:11AM 0.15 | 8:24AM 0.01 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Tuesday 17 | Wednesday 18 | Thursday 19 | Friday 20 | Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Sunrise | - | 6:00 | - | - | - | - | - | - | - | 6:00 | - | - | - | - | - | - | - | 6:00 | - | - | - | - | - | - | - | 6:00 | - | - | - | - | - | - | - | 6:01 | - | - | - | - | - | - | - | 6:01 | - | - | - | - | - | - | - | 6:01 | - | - | - | - | - | - | - | 6:01 | - | - |
| Sunset | - | - | - | - | 6:39 | - | - | - | - | - | - | - | 6:40 | - | - | - | - | - | - | - | 6:40 | - | - | - | - | - | - | - | 6:40 | - | - | - | - | - | - | - | 6:40 | - | - | - | - | - | - | - | 6:42 | - | - | - | - | - | - | - | 6:42 | - | - | - | - | - | - | - |
 |  |  | | |  | | | |  | | | | | | |  | | | | | | | | |  | | | | | | | | | | | | | | | | | | | | |  | | | | | | | | | | | | | | |
Rain (mm) | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | - | - | - | - | - | 1 | 1 | - | - | - | - | - | 2 | 3 | - | - | - | - | - | 1 | 2 | 1 | - | 1 | 1 | 1 | 1 | 1 | 3 | 1 | 6 | 3 | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 29 | 28 | 28 | 29 | 29 | 30 | 30 | 29 | 28 | 28 | 28 | 29 | 30 | 31 | 29 | 28 | 28 | 28 | 28 | 29 | 30 | 29 | 29 | 28 | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 27 | 26 | 26 | 27 | 26 | 27 | 25 | 27 | 25 | 27 | 27 | 27 | 28 | 29 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 |
| Feels °C (?) | 32 | 31 | 30 | 31 | 32 | 33 | 33 | 30 | 28 | 28 | 29 | 30 | 33 | 32 | 29 | 28 | 28 | 27 | 27 | 30 | 30 | 27 | 27 | 26 | 27 | 28 | 28 | 29 | 29 | 28 | 26 | 25 | 27 | 27 | 25 | 26 | 25 | 24 | 25 | 24 | 25 | 25 | 24 | 23 | 22 | 25 | 23 | 26 | 25 | 25 | 25 | 26 | 26 | 26 | 29 | 29 | 29 | 29 | 29 | 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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