Thailand surfForecast / Simeulue Island / Indonesia

information circle12 Day Weather and Surf, issued 6 am Tuesday 01 Jul 2025 WIB
Forecast update in hr  min  s Forecast update imminent
Thailand surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Thailand sea temperature is
30.0° C
(Which is slightly warmer than usual)


Best Forecast Surf Conditions for Thailand this week:

The surf forecast for Thailand over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Jul 01) at 1PM. The primary swell is predicted to be 1.7m and 16s period with a secondary swell of 0.4m and 10s. The wind is predicted to be onshore as the swell arrives.

The most powerful waves expected at Thailand in the next 12 days are 1.9m 16s and forecast to arrive on Monday (Jul 07) at 10AM. Winds are predicted to be glassy at the time the swell arrives.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+) 1PM (Tue 1st Jul)5.5ft (1.7m) 16s
Best Surf10PM (Sun 6th Jul)4.5ft (1.4m) 17s
Most Powerful10AM (Mon 7th Jul)6ft (1.9m) 16s

Table - best surf conditions forecast for Thailand over the next 12 days.

Updates in  hr  min  s Forecast update imminent
Tuesday
01
Wednesday
02
Thursday
03
Friday
04
Saturday
05
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
Thursday
10
Friday
11
Saturday
12
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.8
SW
1.7
SW
1.6
SW
1.4
SW
1.2
SW
1.1
SW
1
SW
1
SSW
1
SSW
0.9
SSW
0.9
SSW
0.8
SW
0.8
SW
0.7
SW
0.7
SW
0.7
SW
1.3
SW
1.5
SW
1.9
SW
1.9
SW
1.7
SW
1.5
SW
1.4
SW
1.2
SW
0.6
S
0.8
S
1.5
SSW
1.6
S
1.7
S
2
S
1.9
S
1.8
S
1.7
S
1.6
S
1.5
S
1
SW
Period(s) (?)161616151414141414131414141413181716161514141313181817161514141313121218
Wave
Graph
(?)Metric surfscale
Energy (?)18001550126688069953947361257254641731636127423451310171299178315881276955816670569689131114491472171314591291115211269721174
Wind
(km/h)
0
SW
10
WNW
5
WNW
5
N
5
W
10
WNW
5
W
5
WNW
5
WNW
5
NW
0
SSE
5
SW
5
NNW
5
W
5
NW
5
NNW
10
WNW
10
NNW
5
W
5
WSW
5
S
10
SE
10
SSE
10
S
0
S
5
SW
10
SW
5
SW
10
WNW
15
WNW
30
W
25
WNW
30
NW
20
NNW
25
W
20
NW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glasscross-
on
crossglassglasscross-
on
cross-
on
crosscross-
on
glassglassonglassglasscrosscross-
off
cross-
on
cross-
off
glassglassglasscrosscross-
on
cross-
on
glassononglasscrosscrosscross-
on
cross-
on
crosscross-
off
cross-
on
cross
High Tide
/ height (m)
10:04AM
0.59
10:58PM
0.45
10:41AM
0.53
11:56PM
0.46
11:22AM
0.46
1:00AM
0.48
12:12PM
0.39
2:06AM
0.50
1:24PM
0.34
3:06AM
0.52
2:50PM
0.31
3:58AM
0.55
4:02PM
0.30
4:44AM
0.59
4:56PM
0.31
5:25AM
0.62
5:40PM
0.33
6:03AM
0.66
6:19PM
0.35
6:39AM
0.69
6:56PM
0.38
7:13AM
0.72
7:33PM
0.41
Low Tide
/ height (m)
4:44PM
0.13
4:18AM
0.23
5:18PM
0.14
5:27AM
0.28
5:55PM
0.16
7:06AM
0.30
6:38PM
0.16
8:59AM
0.28
7:31PM
0.16
10:20AM
0.23
8:28PM
0.14
11:11AM
0.18
9:24PM
0.12
11:49AM
0.14
10:14PM
0.10
12:22PM
0.10
10:58PM
0.07
12:54PM
0.08
11:39PM
0.06
1:26PM
0.06
12:18AM
0.05
1:57PM
0.06
12:57AM
0.06
Tuesday
01
Wednesday
02
Thursday
03
Friday
04
Saturday
05
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunrise6:30--6:30--6:31--6:31--6:31--6:31--6:31--6:31--6:31--6:31--6:31--6:31--
Sunset-6:45--6:45--6:45--6:45--6:45--6:46--6:46--6:46--6:46--6:46--6:46--6:46-
clearclearrain showersthunderstorm part cloudrain showersthunderstorm cloudlight rainpart cloudcloudpart cloudcloudpart cloudthunderstorm part cloudpart cloudcloudpart cloudpart cloudthunderstorm thunderstorm part cloudthunderstorm clearclearrain showersthunderstorm thunderstorm thunderstorm thunderstorm thunderstorm thunderstorm thunderstorm mod rainthunderstorm
Rain (mm)
--11-22-3-----5-----32-10--92515631370489
Temp. °C292928292928292928292928292928292928303029292928292928282827252626262627
Feels °C (?)333231333332323232333332333332313131333333323332333231323129252627272629

Short Range Forecast: Light rain (total 9mm), mostly falling on Wed night. Warm (max 29°C on Tue morning, min 27°C on Tue night). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 5mm), mostly falling on Sat night. Warm (max 29°C on Fri morning, min 27°C on Sat night). Wind will be generally light.

Days 6-9 Weather Summary Heavy rain (total 24mm), heaviest during Tue night. Warm (max 30°C on Mon morning, min 26°C on Wed night). Wind will be generally light.

Long Range Forecast: Heavy rain (total 191mm), heaviest during Fri morning. Warm (max 28°C on Thu morning, min 24°C on Fri night). Winds increasing (calm on Thu morning, fresh winds from the W by Fri morning).

  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Thailand Surf forecast

The above surf forecast table for Thailand provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Thailand can be found by selecting the local surf guide option on the grey menu. Our Thailand 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 (Thailand) 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 Thailand 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.

Are you planning a holiday in Simeulue Island? If you are looking for accommodation near Thailand, camping, hotels and holiday cottages in Simeulue Island, consider staying in Batoe Nasera which is 84 km (52 miles) away.

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