Thunders surfForecast / Mentawi Islands / Indonesia

information circle48hr Weather and Surf, issued 6 am Sunday 31 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 (31 May):

  • Morning surf: Morning surf (31 May, local time) - 4.5ft (1.4m), 12s period with SSW swell.
  • Afternoon surf: Afternoon surf (31 May, local time) - 4.5ft (1.4m), 12s period with SSW swell.
  • Evening surf: Evening surf (31 May, local time) - 4.5ft (1.3m), 12s period with SSW swell.

The current surf forecast for Thunders at 3PM is: 1.4m 12s primary swell from a South-southwest direction and 0.4m 17s secondary swell from a South-southwest direction (forecast issued at 06:00am May 31). The wind direction is predicted to be onshore.

Time (WIB) & DateWave HeightWave Period
Morning (31 May)4.5ft (1.4m)12s
Afternoon (31 May)4.5ft (1.4m)12s
Evening (31 May)4.5ft (1.3m)12s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 29°C on Sun morning, min 26°C on Sun night). Wind will be generally light.

Sunday
31
Monday
1
Tuesday
2
Wed
3
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
4 PM
7 PM
10 PM
1 AM
Rating
(10 max)
2
2
2
2
2
3
3
3
3
3
3
2
2
3
3
3
4
3
3
3
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)
1.5
SSW
12
1.4
SSW
12
1.4
SSW
12
1.4
SSW
12
1.3
SSW
12
1.3
SSW
12
1.3
SSW
12
1.3
SSW
12
0.9
SSW
16
0.9
SSW
15
1.1
SW
15
1.2
SSW
15
1.2
SSW
14
1.3
SSW
14
1.6
SSW
14
1.6
SSW
14
1.6
SSW
14
1.4
SSW
14
1.3
SSW
14
1.5
SSW
13
1.5
SSW
13
1.5
SSW
13
1.6
SSW
13
1.7
SSW
13
Wave Graph
Metric surfscale
Energy kJ
636
598
598
589
508
500
454
446
402
393
496
576
553
578
876
889
969
774
702
817
781
781
878
998
Wind (km/h)
10
SE
10
ESE
10
SE
10
S
10
S
5
SSE
5
E
5
NE
5
NE
5
ENE
5
SSE
10
S
5
S
5
S
5
SSE
5
E
5
E
5
ENE
5
SE
5
S
5
S
5
SSW
0
SSW
0
E
cross-on
cross-on
cross-on
on
on
glassy
glassy
glassy
glassy
glassy
glassy
on
on
glassy
glassy
glassy
glassy
cross-off
glassy
on
on
glassy
glassy
glassy
High Tide
5:51AM0.95m
6:19PM0.53m
6:26AM0.95m
6:55PM0.53m
7:01AM0.94m
7:30PM0.52m
Low Tide
12:40PM0.10m
11:33PM0.14m
1:13PM0.09m
00:08AM0.13m
1:47PM0.09m
00:43AM0.14m
part cloud
part cloud
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
part cloud
part cloud
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:18
6:18
6:18
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:15
6:15
6:15
6:15
Temp °C
27
27
28
29
29
28
27
26
26
26
28
29
29
28
27
26
26
26
28
29
28
28
27
27
30
31
31
31
32
32
31
30
30
30
32
32
32
32
31
29
30
29
32
33
31
32
31
32
Swell 1
Height (m)
Direction
Period (s)
1.5
SSW
12
1.4
SSW
12
1.4
SSW
12
1.4
SSW
12
1.3
SSW
12
1.3
SSW
12
1.3
SSW
12
1.3
SSW
12
1.2
SSW
11
1.1
SSW
11
1.1
SSW
11
1.2
SSW
15
1.2
SSW
14
1.3
SSW
14
1.6
SSW
14
1.6
SSW
14
1.6
SSW
14
1.4
SSW
14
1.3
SSW
14
1.5
SSW
13
1.5
SSW
13
1.5
SSW
13
1.6
SSW
13
1.7
SSW
13
Energy kJ
636
598
598
589
508
500
454
446
372
285
280
576
553
578
876
889
969
774
702
817
781
781
878
998
Swell 2
Height (m)
Direction
Period (s)
0.4
WNW
8
0.4
WNW
8
0.4
WNW
8
0.4
WNW
8
0.4
SSW
17
0.6
SSW
16
0.7
SSW
16
0.8
SSW
16
0.9
SSW
16
0.9
SSW
15
1.1
SW
15
1.1
SSW
11
1
SSW
11
0.9
SSW
11
0.3
WNW
8
0.3
WNW
8
0.3
SSW
20
0.7
SSW
8
0.7
SSW
8
0.6
SSW
18
0.8
SSW
18
0.8
SSW
17
0.9
SSW
16
0.9
SSW
16
Energy kJ
26
26
26
25
115
179
232
330
402
393
496
275
226
202
11
11
75
68
65
249
352
340
385
376
Swell 3
Height (m)
Direction
Period (s)
0.2
SSW
18
0.3
SSW
18
0.3
SSW
18
0.4
SW
18
0.4
WNW
8
0.4
WNW
8
0.4
WNW
8
0.4
WNW
8
0.4
WNW
8
0.3
WNW
8
0.3
WNW
8
0.3
WNW
8
0.3
WNW
8
0.3
WNW
8
0.1
SW
24
0.2
SSW
20
0.3
WNW
8
0.4
SSW
19
0.4
SSW
18
0.3
WNW
7
0.3
WNW
7
0.3
WNW
7
0.3
WNW
7
0.4
SW
20
Energy kJ
31
61
62
79
21
21
21
21
21
12
12
12
12
12
22
38
11
122
128
11
10
10
10
134
Wind waves
Height (m)
Direction
Period (s)
0.2
SSE
5
0.3
SE
6
Energy kJ
2
6
Nearest Offshore or Glassy
Rating
(10 max)
3
3
3
3
2
3
3
3
3
3
3
3
3
3
3
3
4
3
3
3
3
4
4
4
Distance (km)
3
3
3
62
84
0
0
0
0
0
0
62
62
0
0
0
0
0
0
31
62
0
0
0
Best forecast wave conditions in Mentawi Islands
Rating
(10 max)
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
4
3
3
4
4
4
4
4
Best forecast wave conditions in Indonesia
Rating
(10 max)
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
4
3
3
4
4
4
4
4
Header Global
Rating
(10 max)
7
7
7
7
7
6
5
5
5
5
5
5
5
4
5
9
5
5
5
8
5
6
4
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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