Thunders surfForecast / Mentawi Islands / Indonesia

information circle48hr Weather and Surf, issued 12 am Saturday 23 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 6AM is: 1.4m 14s primary swell from a Southwest direction and 0.5m 8s secondary swell from a South direction (forecast issued at 12:00am May 23). The wind direction is predicted to be cross-offshore and the swell rating is 3.

Time (WIB) & DateWave HeightWave Period
Morning (23 May)4.5ft (1.3m)14s
Afternoon (23 May)4.5ft (1.4m)14s
Evening (23 May)4ft (1.2m)14s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 23mm), heaviest during Sat night. Warm (max 29°C on Sat morning, min 26°C on Sat night). Wind will be generally light.

Saturday
23
Sunday
24
Monday
25
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
4 PM
7 PM
10 PM
Rating
(10 max)
3
3
3
3
3
3
3
3
3
3
2
2
2
1
1
1
1
2
1
1
1
1
2
3
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1.4
SW
15
1.4
SW
14
1.3
SW
14
1.3
SW
14
1.4
SW
14
1.4
SSW
14
1.3
SSW
14
1.2
SW
14
1.2
SSW
13
1.2
SSW
13
1.1
SW
13
1.1
SW
13
1.1
SW
13
1
SW
13
1
SW
13
0.9
SSW
12
0.8
SSW
12
0.7
SW
12
0.6
SW
15
0.6
SSW
15
0.8
SSW
12
0.6
SW
16
1.1
SW
16
1.2
SW
17
Wave Graph
Metric surfscale
Energy kJ
838
701
595
604
711
742
644
540
479
465
394
394
394
336
326
264
184
147
144
154
187
208
587
805
Wind (km/h)
5
NNW
5
NNW
5
NNW
5
NNW
5
NW
10
WNW
10
NW
10
NW
10
NNW
10
N
15
N
15
NNE
20
NNW
20
NW
15
NW
15
NW
15
NNW
15
NNW
15
NNW
20
NNW
20
NW
20
NW
15
NW
10
NNW
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
off
off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
off
High Tide
11:03PM0.56m
11:03AM0.84m
00:20AM0.61m
12:08PM0.75m
1:34AM0.67m
1:18PM0.67m
Low Tide
4:11AM0.27m
6:01PM0.18m
5:39AM0.34m
6:58PM0.20m
7:26AM0.37m
7:50PM0.21m
thunderstorm
thunderstorm
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
cloud
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
part cloud
thunderstorm
thunderstorm
thunderstorm
<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>
6:14
6:14
6:14
1
2
1
1
1
2
5
3
1
1
1
1
1
1
1
1
Temp °C
27
27
27
29
29
29
28
27
27
27
26
26
29
29
28
27
27
27
26
28
29
28
27
27
31
31
31
33
33
33
31
31
30
30
28
28
30
30
30
29
29
29
27
29
31
29
29
30
Swell 1
Height (m)
Direction
Period (s)
1.4
SW
15
1.4
SW
14
1.3
SW
14
1.3
SW
14
1.4
SW
14
1.4
SSW
14
1.3
SSW
14
1.2
SW
14
1.2
SSW
13
1.2
SSW
13
1.1
SW
13
1.1
SW
13
1.1
SW
13
1
SW
13
1
SW
13
0.9
SSW
12
0.8
SSW
12
0.7
SW
12
0.7
SW
12
0.8
WNW
9
0.9
WNW
9
0.9
WNW
8
1.1
SW
16
1.2
SW
17
Energy kJ
838
701
595
604
711
742
644
540
479
465
394
394
394
336
326
264
184
147
144
96
106
103
587
805
Swell 2
Height (m)
Direction
Period (s)
0.6
S
8
0.6
S
8
0.5
S
8
0.5
S
8
0.4
WNW
7
0.5
WNW
8
0.5
WNW
8
0.5
WNW
8
0.5
WNW
8
0.5
WNW
8
0.5
WNW
8
0.5
WNW
8
0.6
WNW
8
0.6
WNW
8
0.4
S
8
0.4
SSE
8
0.5
S
8
0.5
S
9
0.6
SW
15
0.6
SW
12
0.8
SSW
12
0.7
SW
12
0.9
WNW
8
0.9
WNW
8
Energy kJ
50
47
33
32
21
35
37
37
36
36
37
39
45
45
21
20
30
41
139
114
187
154
103
103
Swell 3
Height (m)
Direction
Period (s)
0.5
WNW
6
0.5
WNW
7
0.5
WNW
7
0.5
WNW
7
0.5
S
8
0.1
W
14
0.1
SE
8
0.4
S
8
0.1
SE
8
0.1
SE
8
0.4
S
7
0.4
S
8
0.4
S
9
0.4
S
8
0.2
SSW
18
0.3
SW
18
0.4
SW
15
0.4
SW
15
0.5
S
9
0.6
SSW
15
0.6
SSW
16
0.6
SW
16
0.5
S
9
0.5
S
9
Energy kJ
23
27
29
30
32
4
2
21
2
2
17
19
24
21
31
49
54
76
41
154
175
208
39
39
Wind waves
Height (m)
Direction
Period (s)
0.4
NW
8
0.4
NW
8
0.7
NW
8
0.8
WNW
8
0.8
WNW
8
0.8
WNW
8
0.8
WNW
9
0.5
NNW
4
0.4
NNW
4
0.4
NNW
4
0.4
NNW
4
0.3
NNW
4
Energy kJ
23
23
67
82
80
80
99
10
6
6
5
3
Nearest Offshore or Glassy
Rating
(10 max)
3
3
3
3
3
3
3
3
3
3
2
2
2
2
2
2
2
2
2
2
2
2
3
3
Distance (km)
0
0
0
0
0
0
0
0
0
0
0
0
0
85
84
84
84
0
40
84
84
84
40
0
Best forecast wave conditions in Mentawi Islands
Rating
(10 max)
4
3
3
3
3
3
3
3
3
3
3
2
2
2
2
2
2
2
2
2
2
2
3
3
Best forecast wave conditions in Indonesia
Rating
(10 max)
4
3
4
3
3
3
3
3
3
3
3
2
2
2
2
3
3
2
2
3
3
3
3
3
Header Global
Rating
(10 max)
7
6
5
5
6
7
8
7
6
5
5
5
5
5
5
5
5
5
5
4
5
5
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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