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Ko Samet - Sai Kaew Surf Forecast
/ Gulf of Thailand (13 surf breaks) /
Surf Forecasts:
Ko Samet - Sai Kaew surfForecast / Gulf of Thailand / Thailand
12 Day Weather and Surf, issued 6 am Friday 29 Aug 2025 +07
Best Forecast Surf Conditions for Ko Samet - Sai Kaew this week:
The most powerful waves expected at Ko Samet - Sai Kaew in the next 12 days are 1.1m 6s and forecast to arrive on Sunday (Aug 31) at 10PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Sunday (Aug 31) at 7AM.
| Wave Type | Time (+07) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Sun 31st Aug) | 3.5ft (1.1m) 6s |
Table - best surf conditions forecast for Ko Samet - Sai Kaew over the next 12 days.
Short Range Forecast Heavy rain (total 33mm), heaviest during Sat night. Warm (max 30°C on Fri afternoon, min 25°C on Sat night). Mainly fresh winds. | Days 3-6 Weather Summary Heavy rain (total 74mm), heaviest during Wed afternoon. Warm (max 28°C on Tue morning, min 25°C on Wed morning). Mainly fresh winds. | ||||||||||||||||||||
Friday 29 | Saturday 30 | Sunday 31 | Monday 01 | Tuesday 02 | Wednesday 03 | Thursday 04 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 4 | 5 | 5 | 6 | 6 | 6 | 6 | 3 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 4 | 4 | 5 | 6 | 5 |
Wave (?)Graph  | |||||||||||||||||||||
| Energy (?) | 13 | 17 | 53 | 38 | 26 | 61 | 15 | 6 | 82 | 71 | 43 | 68 | 69 | 40 | 45 | 27 | 9 | 23 | 49 | 20 | 29 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- on | cross | cross | cross | cross- on | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross | cross- on | cross- on | cross- on | cross | cross | cross- on | cross |
High Tide / height (m) | 4:55PM 1.47 | 4:53PM 1.55 | 5:02PM 1.63 | 5:21PM 1.69 | 5:47PM 1.74 | 6:17PM 1.79 | 6:49PM 1.81 | ||||||||||||||
Low Tide / height (m) | 1:52AM 0.66 | 2:37AM 0.57 | 3:29AM 0.50 | 4:27AM 0.43 | 5:26AM 0.35 | 6:19AM 0.28 | |||||||||||||||
Friday 29 | Saturday 30 | Sunday 31 | Monday 01 | Tuesday 02 | Wednesday 03 | Thursday 04 | |||||||||||||||
| Sunrise | 6:03 | - | - | 6:03 | - | - | 6:03 | - | - | 6:03 | - | - | 6:03 | - | - | 6:03 | - | - | 6:03 | - | - |
| Sunset | - | 6:27 | - | - | 6:25 | - | - | 6:24 | - | - | 6:24 | - | - | 6:23 | - | - | 6:22 | - | - | 6:22 | - |
 | |  | |  | |  | | |  | | | | | | | |  | | | | |
Rain (mm) | - | - | 2 | - | 1 | 13 | 2 | 9 | 6 | 9 | 4 | 3 | 1 | 4 | 11 | 10 | 24 | 8 | 12 | 12 | 11 |
| Temp. °C | 29 | 30 | 29 | 30 | 30 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 26 | 25 | 26 | 26 | 26 | 27 |
| Feels °C (?) | 29 | 31 | 30 | 30 | 31 | 27 | 28 | 29 | 28 | 28 | 27 | 26 | 28 | 29 | 29 | 27 | 27 | 27 | 28 | 27 | 27 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Gulf of Thailand
Continuing clean conditions at Ko Samet - Sai Kaew (light winds from the WNW at Rayong/Utapao-Taphao International Airport 16 km from Ko Samet - Sai Kaew). A 0.9m local chop from the WSW
16 km away, 1 h 24 min ago
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 Samet - Sai Kaew 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.
Information about the Ko Samet - Sai Kaew Surf forecast
The above surf forecast table for Ko Samet - Sai Kaew provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Ko Samet - Sai Kaew can be found by selecting the local surf guide option on the grey menu. Our Ko Samet - Sai Kaew surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Ko Samet - Sai Kaew) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Ko Samet - Sai Kaew may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Ko Samet - Sai Kaew is 15 km (9 miles) from the city of Rayong. If you plan a holiday in Gulf of Thailand, look for hotels and other accommodation in Rayong. Rayong has rooms for a wide range of budgets as well as car hire and transport links.
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