Ko Samet - Sai Kaew Surf Forecast

/ Gulf of Thailand (13 surf breaks) /

Thailand (35 surf breaks) / Lat Long: (12.57° N 101.47° E)

Surf Forecasts:

Ko Samet - Sai Kaew surfForecast / Gulf of Thailand / Thailand

12 Day Weather and Surf, issued 12 pm Friday 17 Oct 2025 +07

Forecast update in hr min s Forecast update imminent

Ko Samet - Sai Kaew surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Ko Samet - Sai Kaew sea temperature is 29.8° C
(Which is slightly warmer than usual)

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 0.1m 5s and forecast to arrive on Friday (Oct 17) at 7PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Wednesday (Oct 22) at 7AM.

Wave Type	Time (+07) & Date	Wave Height & Period
Next good surf (1 star+)	-	-
Best Surf	-	-
Most Powerful	7PM (Fri 17th Oct)	0.5ft (0.1m) 5s

Table - best surf conditions forecast for Ko Samet - Sai Kaew over the next 12 days.

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Short Range Forecast Heavy rain (total 24mm), heaviest during Fri night. Warm (max 30°C on Fri morning, min 26°C on Sat night). Wind will be generally light.									Days 3-6 Weather Summary Moderate rain (total 14mm), heaviest on Mon night. Warm (max 30°C on Mon morning, min 23°C on Wed night). Wind will be generally light.
	Friday 17			Saturday 18			Sunday 19			Monday 20			Tuesday 21			Wednesday 22			Thursday 23
	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night
Rating (10 max)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	—	S	—	SSE	—	—	—	—	—	—	—	—	NE	—	NE	ENE	E	NNE	NE	NE	NE
Period(s) (?)	-	5	-	3	-	-	-	-	-	-	-	-	2	-	3	3	3	3	3	3	3
Wave Graph (?)
kJ (?)	0	1	0	1	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0
Wind (km/h)	ENE	SSW	NNE	NE	S	NNW	NE	W	NE	NE	WSW	NNE	NE	N	NNE	NE	NNE	NNE	NE	NNE	NNE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- off	cross- on	cross- off	cross- off	on	glass	cross- off	glass	cross- off	cross- off	cross- on	cross- off	cross- off	off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off
High Tide / height (m)		3:56PM 1.55			3:21PM 1.43			2:39PM 1.34	1:51AM 1.05		1:54PM 1.32		5:20AM 1.16	1:10PM 1.35		12:35PM 1.42			12:09PM 1.51
Low Tide / height (m)				5:39AM 0.62			6:14AM 0.79		10:05PM 1.02	6:41AM 0.98		9:23PM 0.85	6:44AM 1.16		9:29PM 0.67			9:48PM 0.52			10:14PM 0.40

	Friday 17			Saturday 18			Sunday 19			Monday 20			Tuesday 21			Wednesday 22			Thursday 23
Sunrise	6:03	-	-	6:03	-	-	6:03	-	-	6:03	-	-	6:03	-	-	6:03	-	-	6:05	-	-
Sunset	-	5:53	-	-	5:53	-	-	5:52	-	-	5:52	-	-	5:52	-	-	5:52	-	-	5:51	-

Rain (mm)	-	-	8	2	1	4	3	3	3	-	3	8	1	1	1	-	-	-	-	-	-
Temp. °C	30	29	29	29	29	28	29	30	28	30	30	28	27	29	27	28	29	26	28	28	25
Feels °C (?)	34	32	34	33	33	33	33	34	32	34	34	32	30	33	29	29	30	27	29	28	26

Map Icons:
Break
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

Wind Update The wind is still cross-on at Ko Samet - Sai Kaew (light winds from the SSE.(Wind varies from 090 to 180 degs) at Rayong/Utapao-Taphao International Airport 16 km from Ko Samet - Sai Kaew). 0.1m 2s local chop from the ESE with a 0.1m 2s local chop from the SSW. 2 swells combining to make bigger set waves.
1 hour 32 minutes ago Ko Samet - Sai Kaew

Expand

View all

16 km away, 1 h 32 min ago

11 km/h

SSE

0.0

29.8

Air / Water (°C)

Please reload the page to see if there are any updates.

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.