Thunders surfForecast / Mentawi Islands / Indonesia

information circle48hr Weather and Surf, issued 12 pm Monday 25 May 2026 WIB
Forecast update in hr  min  s Forecast update imminent
Thunders surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Thunders sea temperature is
30.3° C
(Which is slightly warmer than usual)

How big are the waves at Thunders today?

The current surf forecast for Thunders at 5PM is: 0.6m 16s primary swell from a Southwest direction and 0.7m 13s secondary swell from a Southwest direction, 0.8m 9s secondary swell from a West-northwest direction, 0.5m 9s secondary swell from a West-northwest direction (forecast issued at 12:00pm May 25). The wind direction is predicted to be cross-offshore.

Time (WIB) & DateWave HeightWave Period
Morning (25 May)2ft (0.6m)15s
Afternoon (25 May)2ft (0.6m)16s
Evening (25 May)4ft (1.2m)16s

Table - waves today at Thunders. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 3mm), mostly falling on Tue morning. Warm (max 29°C on Tue morning, min 26°C on Tue night). Wind will be generally light.

Mon
25
Tuesday
26
Wednesday
27
Thu
28
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
Rating
(10 max)
1
1
2
2
3
4
4
4
4
4
3
4
4
4
4
4
4
4
4
4
3
4
4
4
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.6
SSW
15
0.8
SSW
12
0.6
SW
16
1.2
SW
16
1.3
SSW
16
1.2
SW
17
1.4
SW
17
1.4
SW
16
1.4
SW
16
1.6
SW
16
1.6
SW
16
1.6
SW
16
1.6
SW
15
1.6
SW
15
1.6
SW
14
1.5
SW
14
1.5
SW
14
1.5
SW
14
1.1
SW
18
2
SW
17
2.1
SW
17
2.1
SW
16
2.2
SW
16
2.2
SW
16
Wave Graph
Metric surfscale
Energy kJ
154
187
208
748
907
854
1061
964
1044
1239
1224
1193
1118
1059
1031
915
902
890
817
2375
2483
2445
2506
2444
Wind (km/h)
20
WNW
20
WNW
15
WNW
15
NW
15
NNW
15
NNW
10
NNW
10
NNW
15
NW
15
WNW
10
W
5
W
0
W
0
N
5
NNE
5
NNE
5
NNE
0
WSW
0
SSW
5
S
5
S
5
ESE
5
E
10
ENE
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross
glassy
glassy
glassy
glassy
cross-off
glassy
glassy
glassy
glassy
on
glassy
glassy
cross-off
High Tide
1:18PM0.67m
2:35AM0.75m
2:26PM0.62m
3:24AM0.82m
3:26PM0.59m
4:05AM0.87m
Low Tide
7:50PM0.21m
8:59AM0.34m
8:34PM0.21m
10:05AM0.29m
9:13PM0.20m
part cloud
part cloud
part cloud
cloud
part cloud
cloud
part cloud
part cloud
thunderstorm
clear
part cloud
clear
part cloud
part cloud
part cloud
part cloud
clear
part cloud
thunderstorm
clear
thunderstorm
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:16
6:16
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:14
6:15
6:15
6:15
1
1
1
Temp °C
27
28
28
27
27
27
27
27
28
29
28
28
27
27
27
26
28
28
28
27
27
27
26
26
28
29
29
28
29
30
30
30
31
31
31
32
31
31
31
29
32
33
33
31
30
31
30
30
Swell 1
Height (m)
Direction
Period (s)
0.8
WNW
9
0.8
SSW
12
0.7
SW
13
1.2
SW
16
1.3
SSW
16
1.2
SW
17
1.4
SW
17
1.4
SW
16
1.4
SW
16
1.6
SW
16
1.6
SW
16
1.6
SW
16
1.6
SW
15
1.6
SW
15
1.6
SW
14
1.5
SW
14
1.5
SW
14
1.5
SW
14
1.4
SW
14
2
SW
17
2.1
SW
17
2.1
SW
16
2.2
SW
16
2.2
SW
16
Energy kJ
90
187
167
748
907
854
1061
964
1044
1239
1224
1193
1118
1059
1031
915
902
890
711
2375
2483
2445
2506
2444
Swell 2
Height (m)
Direction
Period (s)
0.7
SW
12
0.8
WNW
9
0.8
WNW
9
0.8
WNW
9
0.8
WNW
9
0.8
WNW
9
0.8
WNW
9
0.8
WNW
9
0.7
WNW
9
0.7
WNW
8
0.6
WNW
8
0.6
WNW
8
0.6
WNW
8
0.6
WNW
8
0.5
SSE
8
0.6
SW
20
0.8
SW
19
1
SW
18
1.1
SW
18
0.5
WNW
8
0.5
WNW
8
0.5
WNW
8
0.5
WNW
8
0.5
WNW
8
Energy kJ
144
90
88
88
88
88
88
88
67
64
55
55
55
54
38
306
436
664
817
38
38
37
37
37
Swell 3
Height (m)
Direction
Period (s)
0.6
SSW
15
0.6
SSW
16
0.6
SW
16
0.5
S
9
0.5
S
8
0.5
S
8
0.5
S
8
0.5
SSE
8
0.5
SSE
8
0.5
SSE
8
0.5
SSE
8
0.5
SSE
8
0.5
SSE
8
0.5
SSE
8
0.5
WNW
8
0.5
SSE
8
0.5
SSE
8
0.5
WNW
8
0.5
WNW
8
0.4
SSE
8
0.4
SSE
8
0.4
SSE
8
0.3
SSE
8
0.3
SSE
8
Energy kJ
154
175
208
39
35
36
36
40
40
40
40
39
39
38
39
37
36
38
38
24
23
23
12
12
Wind waves
Height (m)
Direction
Period (s)
0.5
W
9
0.4
WNW
9
0.5
WNW
9
0.4
NW
3
0.4
NW
3
0.5
NW
9
0.5
NW
9
Energy kJ
38
25
45
2
2
38
38
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
3
3
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
Distance (km)
84
84
84
40
40
0
0
0
0
0
62
0
0
0
0
0
0
0
0
0
31
0
0
0
Best forecast wave conditions in Mentawi Islands
Rating
(10 max)
2
2
3
3
3
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
Best forecast wave conditions in Indonesia
Rating
(10 max)
2
2
3
3
3
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
Header Global
Rating
(10 max)
4
4
5
5
4
4
4
4
5
5
9
9
9
9
6
7
9
6
8
9
9
9
6
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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