Thunders surfForecast / Mentawi Islands / Indonesia

information circle48hr Weather and Surf, issued 6 pm Monday 27 Apr 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
30.2° C
(Which is slightly warmer than usual)

How big are the waves at Thunders today?

The current surf forecast for Thunders at 11PM is: 1.2m 12s primary swell from a South-southwest direction and 0.7m 16s secondary swell from a South direction (forecast issued at 06:00pm April 27). The wind direction is predicted to be cross-onshore.

Time (WIB) & DateWave HeightWave Period
Morning (27 Apr)--
Afternoon (27 Apr)4.5ft (1.3m)13s
Evening (27 Apr)4ft (1.2m)12s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 19mm), heaviest on Tue night. Warm (max 29°C on Mon afternoon, min 27°C on Tue night). Wind will be generally light.

Mon
27
Tuesday
28
Wednesday
29
Thu
30
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
10 AM
1 PM
Rating
(10 max)
1
2
2
2
2
1
1
2
3
3
3
2
3
3
4
4
4
4
4
4
4
4
4
4
Swell
Height Map
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
Wave
Height (m)
Direction
Period (s)
1.3
SSW
13
1.3
SSW
13
1.2
SSW
12
1.1
SSW
12
1.1
SSW
12
0.9
SSW
15
1.2
S
14
0.7
SSW
20
1.2
SSW
14
1.3
S
13
1
SSW
18
1.1
SSW
18
1.1
SSW
18
1.2
SSW
17
1.2
SSW
17
1.3
SSW
16
1.5
SSW
16
1.6
SSW
16
1.6
SSW
15
1.6
SSW
15
1.6
SSW
15
1.6
SSW
14
1.5
SSW
14
1.7
SSW
14
Wave Graph
Metric surfscale
Energy kJ
581
572
461
379
373
365
610
412
596
591
716
826
817
908
827
927
1123
1331
1265
1049
1021
980
862
1204
Wind (km/h)
15
S
10
SSE
10
SSE
10
SSE
10
SSE
10
SSE
15
SE
10
SE
5
SSE
10
SSE
10
SSE
10
SSE
10
SE
10
E
10
ENE
5
N
10
NNW
5
NW
5
NNE
10
NNE
5
NE
5
NE
5
NNE
0
E
on
on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-off
off
cross-off
cross-off
off
off
glassy
cross-off
off
glassy
High Tide
3:13PM0.73m
4:06AM0.77m
4:06PM0.72m
4:43AM0.85m
4:50PM0.71m
5:16AM0.92m
Low Tide
9:45PM0.18m
10:21AM0.26m
10:17PM0.16m
11:07AM0.20m
10:45PM0.15m
11:45AM0.15m
part cloud
clear
clear
clear
clear
thunderstorm
clear
thunderstorm
thunderstorm
clear
clear
thunderstorm
thunderstorm
cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:16
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:16
6:16
6:15
6:15
1
1
1
1
4
1
1
1
4
1
2
1
Temp °C
29
28
28
28
28
28
29
29
29
29
28
28
27
28
28
28
28
28
28
27
27
27
28
29
32
32
32
32
32
32
32
33
33
34
32
32
30
32
33
32
32
33
32
31
32
31
32
33
Swell 1
Height (m)
Direction
Period (s)
1.3
SSW
13
1.3
SSW
13
1.2
SSW
12
1.1
SSW
12
1.1
SSW
12
0.9
SSW
11
1.2
S
14
0.9
SSW
14
1.2
SSW
14
1.3
S
13
1.2
S
13
1.2
S
13
1.2
S
13
1.2
SSW
17
1.2
SSW
17
1.3
SSW
16
1.5
SSW
16
1.6
SSW
16
1.6
SSW
15
1.6
SSW
15
1.6
SSW
15
1.6
SSW
14
1.5
SSW
14
1.7
SSW
14
Energy kJ
581
572
461
379
373
213
610
341
596
591
490
483
490
908
827
927
1123
1331
1265
1049
1021
980
862
1204
Swell 2
Height (m)
Direction
Period (s)
0.6
S
17
0.7
S
16
0.7
S
16
0.8
S
16
0.8
S
16
0.9
SSW
15
0.4
SSW
12
0.9
SSW
12
0.7
SSW
20
0.8
SSW
20
1
SSW
18
1.1
SSW
18
1.1
SSW
18
1.2
S
12
1
S
12
1
S
12
0.9
S
12
0.6
SW
16
0.7
SW
16
0.6
SW
16
0.6
SW
16
0.6
SW
16
0.5
SW
15
0.1
W
16
Energy kJ
215
264
251
322
310
365
55
199
403
507
716
826
817
420
273
276
213
206
251
206
159
198
107
5
Swell 3
Height (m)
Direction
Period (s)
0.2
WSW
17
0.1
SW
17
0.2
SSW
21
0.3
SE
8
0.4
SE
8
0.4
SE
8
0.5
S
21
0.7
SSW
20
0.6
SSE
10
0.4
SW
15
0.4
SW
15
0.5
SW
18
0.5
SW
18
0.4
SW
18
0.4
SW
13
0.5
SW
13
0.4
SW
14
0.1
W
18
0.1
W
18
0.1
W
18
0.1
W
18
0.1
W
18
0.5
S
8
Energy kJ
29
11
45
11
17
16
233
412
77
75
76
155
154
111
63
88
66
6
6
6
6
6
31
Wind waves
Height (m)
Direction
Period (s)
0.4
SE
8
0.4
SE
8
0.5
SE
7
0.3
SSE
4
0.2
ESE
7
0.4
N
3
0.4
N
4
Energy kJ
21
21
27
3
5
4
4
Nearest Offshore or Glassy
Rating
(10 max)
3
3
3
3
3
3
3
3
3
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
Distance (km)
538
3
3
3
3
3
3
3
3
3
3
3
3
3
0
0
0
0
0
0
0
0
0
0
Best forecast wave conditions in Mentawi Islands
Rating
(10 max)
3
3
3
3
3
3
3
3
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
Best forecast wave conditions in Indonesia
Rating
(10 max)
3
3
3
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
Header Global
Rating
(10 max)
6
6
6
6
5
5
5
5
5
5
5
8
9
9
9
8
7
6
9
9
8
6
5
5
  • 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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