Ko Samet - Sai Kaew Surf Break
Lat Long: 12.57° N 101.47° E

Ko Samet - Sai Kaew Surf Forecast and Surf Report

Weather Forecast for Ko Samet - Sai Kaew

Issued: 6 am 06 Jun 2026 (local time)

Forecast update in  hr  min

Today's Ko Samet - Sai Kaew sea temperature is
31.4° C

1.5°C warmer than normal for this time of year

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


Ko Samet - Sai Kaew surf forecast from 6 Jun 2026:

  • Most powerful swell: Friday 12 Jun, 4AM (local time) - 4ft (1.2m), 6s period, SW swell with 102 kJ wave energy.

Best Forecast Surf Conditions for Ko Samet - Sai Kaew this week:

The most powerful waves expected at Ko Samet - Sai Kaew in the next 16 days are 1.2m 6s and forecast to arrive on Friday (Jun 12) at 4AM. Winds are predicted to be cross-shore at the time the swell arrives.

Wave TypeTime (+07) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 4AM (Fri 12th Jun)4ft (1.2m) 6s

Table - best surf conditions forecast for Ko Samet - Sai Kaew over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 35mm), heaviest during Sat morning. Warm (max 29°C on Sat morning, min 28°C on Sat night). Mainly fresh winds.

Days 4-6 Weather Summary

Heavy rain (total 42mm), heaviest during Thu night. Warm (max 29°C on Tue morning, min 27°C on Wed night). Mainly fresh winds.

Saturday
6
Sunday
7
Monday
8
Tuesday
9
Wednesday
10
Thursday
11
Friday
12
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
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
SW
5
0.9
SSW
5
0.8
SW
4
0.9
SW
5
0.8
SSW
5
0.9
SW
5
1
SW
5
0.8
SW
4
0.9
SW
4
1.1
SW
5
0.8
SW
4
1.1
SW
5
1
SW
5
0.9
SW
6
1.1
SW
5
1.1
SW
5
0.9
SW
6
1.1
SW
6
1.1
SW
6
0.8
SW
6
0.6
SW
5
Wave Graph
Metric surfscale
Energy kJ
42
44
26
47
37
31
44
20
26
60
26
58
46
64
53
51
62
77
77
38
14
Wind (km/h)
30
SW
25
SW
25
WSW
25
SW
20
SW
25
WSW
25
WSW
25
SW
30
WSW
25
WSW
20
SW
30
WSW
25
SW
25
SW
25
WSW
25
WSW
25
WSW
25
WSW
30
SW
30
WSW
30
SW
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
00:45AM1.73m
00:28AM1.65m
11:52PM1.56m
11:03PM1.49m
10:17PM1.48m
9:42PM1.54m
9:16PM1.67m
Low Tide
12:36PM0.21m
12:59PM0.30m
1:16PM0.43m
1:20PM0.60m
12:39PM0.78m
7:58AM0.80m
7:22AM0.56m
mod rain
mod rain
mod rain
part cloud
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
mod rain
thunderstorm
rain showers
thunderstorm
thunderstorm
thunderstorm
mod rain
mod rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:47
5:47
5:47
5:47
5:48
5:48
5:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:37
6:37
6:37
6:37
6:37
6:38
6:38
 mm
7
9
6
4
4
1
1
3
1
5
1
8
5
1
3
18
12
8
7
Temp °C
29
29
29
29
29
29
29
29
29
29
29
29
29
28
28
29
29
28
27
26
27
Feels °C
29
30
31
30
31
29
29
30
28
29
30
29
29
29
29
29
30
28
26
26
26
Swell 1
Height (m)
Direction
Period (s)
0.3
SSE
6
0.1
SE
5
0.1
S
6
0.2
SSE
6
0.2
SSE
6
0.1
S
6
0.1
SE
6
0.1
SE
6
0.1
S
7
0.4
SSE
6
0.1
S
6
Energy kJ
6
1
1
3
3
1
1
1
1
10
1
Swell 2
Height (m)
Direction
Period (s)
Energy kJ
Swell 3
Height (m)
Direction
Period (s)
Energy kJ
Wind waves
Height (m)
Direction
Period (s)
0.9
SW
5
0.9
SSW
5
0.8
SW
4
0.9
SW
5
0.8
SSW
5
0.9
SW
5
1
SW
5
0.8
SW
4
0.9
SW
4
1.1
SW
5
0.8
SW
4
1.1
SW
5
1
SW
5
0.9
SW
6
1.1
SW
5
1.1
SW
5
0.9
SW
6
1.1
SW
6
1.1
SW
6
0.8
SW
6
0.6
SW
5
Energy kJ
42
44
26
47
37
31
44
20
26
60
26
58
46
64
53
51
62
77
77
38
14
Nearest Offshore or Glassy
Rating
(10 max)
2
1
2
1
1
1
1
4
1
2
1
2
1
1
1
2
1
1
2
1
1
Distance (km)
554
617
554
617
617
617
617
1386
617
617
1155
617
821
821
963
617
617
617
554
557
617
Best forecast wave conditions in Gulf of Thailand
Rating
(10 max)
Best forecast wave conditions in Thailand
Rating
(10 max)
2
1
2
1
1
1
1
1
2
2
2
1
1
2
1
1
Header Global
Rating
(10 max)
8
9
9
6
7
8
8
6
5
9
9
9
7
7
5
9
9
6
5
5
6
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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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 16 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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