Bankvaults surfForecast / Mentawi Islands / Indonesia

information circle16 Day Weather and Surf, issued 12 am Thursday 30 Apr 2026 WIB
Forecast update in hr  min  s Forecast update imminent
Bankvaults surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Bankvaults sea temperature is
30.3° C
(Which is slightly warmer than usual)

Best Forecast Surf Conditions for Bankvaults this week:

The surf forecast for Bankvaults over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Apr 30) at 10AM. The primary swell is predicted to be 1.5m and 14s period with a secondary swell of 0.6m and 15s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Bankvaults in the next 16 days are 1.5m 16s and forecast to arrive on Thursday (Apr 30) at 10PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Monday (May 04) at 7PM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+)10AM (Thu 30th Apr)5ft (1.5m) 14s
Best Surf10AM (Thu 30th Apr)5ft (1.5m) 14s
Most Powerful10PM (Thu 30th Apr)5ft (1.5m) 16s

Table - best surf conditions forecast for Bankvaults over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 28mm), heaviest during Wed night. Warm (max 29°C on Fri morning, min 25°C on Thu morning). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 20mm), heaviest during Sun night. Warm (max 29°C on Sun morning, min 27°C on Sat night). Wind will be generally light.

Thursday
30
Friday
1
Saturday
2
Sunday
3
Monday
4
Tuesday
5
Wednesday
6
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
4
4
2
1
2
2
3
3
2
2
2
2
2
3
3
2
3
1
1
3
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>
Wave
Height (m)
Direction
Period (s)
1.5
SSW
14
1.3
SSW
14
1.5
SSW
15
1.5
SSW
14
1.5
SSW
14
1.4
SSW
14
1.3
SSW
13
1.1
SSW
13
1
SSW
13
0.9
SSW
12
1
SSW
12
0.8
SSW
13
0.9
SSW
13
1
SSW
12
1
S
12
0.9
SW
18
1
SW
17
1.2
SW
16
1.1
SW
15
0.9
SW
20
0.9
SW
18
Wave Graph
Metric surfscale
Energy kJ
850
722
988
904
841
693
545
408
341
268
269
206
265
318
294
516
549
728
550
552
497
Wind (km/h)
5
WNW
0
N
5
ESE
10
S
15
SW
10
S
10
ESE
5
W
10
NW
5
NNE
5
W
5
WNW
0
S
5
SSW
0
SSW
5
ESE
10
SW
10
S
10
SSE
15
SSW
5
SSW
cross-off
glassy
glassy
on
cross-on
cross-on
cross-on
cross-off
cross-off
cross-off
cross-off
cross-off
glassy
glassy
glassy
glassy
cross-on
on
on
cross-on
cross-on
High Tide
5:33AM1.12m
5:47PM0.88m
6:05AM1.17m
6:23PM0.86m
6:36AM1.19m
6:56PM0.82m
7:06AM1.18m
7:28PM0.78m
7:37AM1.16m
7:58PM0.73m
8:08AM1.11m
8:28PM0.68m
8:39AM1.06m
8:57PM0.64m
Low Tide
11:51AM0.17m
11:25PM0.14m
12:23PM0.12m
11:52PM0.11m
12:54PM0.09m
00:21AM0.10m
1:25PM0.08m
00:51AM0.09m
1:57PM0.09m
1:22AM0.11m
2:32PM0.12m
1:55AM0.14m
3:09PM0.17m
2:29AM0.19m
thunderstorm
part cloud
part cloud
part cloud
clear
rain showers
thunderstorm
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
part cloud
part cloud
part cloud
clear
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:18
6:18
6:18
6:18
6:18
6:18
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:21
6:21
6:21
6:21
6:21
6:21
6:20
1
4
1
4
6
2
8
1
3
8
Temp °C
27
28
28
29
29
28
28
28
27
29
28
28
28
28
28
28
29
28
29
29
28
31
32
32
32
31
31
32
32
30
34
32
32
32
32
32
32
32
31
32
31
31
Swell 1
Height (m)
Direction
Period (s)
1.5
SSW
14
1.3
SSW
14
1.5
SSW
15
1.5
SSW
14
1.5
SSW
14
1.4
SSW
14
1.3
SSW
13
1.1
SSW
13
1
SSW
13
0.9
SSW
12
1
SSW
12
0.8
SSW
13
0.9
SSW
13
1
SSW
12
1
S
12
0.9
SW
18
1
S
10
1.2
SW
16
1.1
SW
15
1.1
SW
14
1
SW
14
Energy kJ
850
722
988
904
841
693
545
408
341
268
269
206
265
318
294
516
198
728
550
528
377
Swell 2
Height (m)
Direction
Period (s)
0.6
SW
15
0.8
SSW
16
0.4
SW
15
0.1
W
15
0.1
W
15
0.1
W
14
0.6
S
8
0.6
S
8
0.6
S
8
0.6
SSW
15
0.7
SSW
14
0.6
S
14
0.5
S
8
0.3
S
16
0.6
SW
19
0.9
S
10
1
SW
17
0.9
S
10
0.9
S
10
0.8
S
10
0.9
SW
18
Energy kJ
171
363
75
5
4
4
48
48
42
169
207
132
31
45
231
164
549
154
164
138
497
Swell 3
Height (m)
Direction
Period (s)
0.5
S
18
0.5
S
8
0.1
W
16
0.1
W
14
0.2
S
18
0.3
SSW
17
0.5
S
16
0.5
S
8
0.1
W
13
0.5
S
8
0.4
SSW
12
0.3
SW
20
0.4
W
5
0.7
SSW
12
0.5
SW
12
0.4
SW
22
0.5
SW
21
0.9
SW
20
0.8
S
10
Energy kJ
155
33
5
4
25
57
129
32
3
31
48
61
8
125
67
119
222
552
135
Wind waves
Height (m)
Direction
Period (s)
0.3
ESE
3
0.4
WNW
3
Energy kJ
2
3
Nearest Offshore or Glassy
Rating
(10 max)
4
4
4
3
3
3
2
3
3
2
2
2
2
2
3
3
3
3
2
3
3
Distance (km)
0
0
0
6
6
6
2
0
0
0
0
0
0
0
0
0
332
6
2
315
6
Best forecast wave conditions in Mentawi Islands
Rating
(10 max)
4
4
4
3
3
3
3
3
3
2
2
2
2
2
3
3
4
3
4
Best forecast wave conditions in Indonesia
Rating
(10 max)
4
4
4
4
3
3
3
3
3
3
3
3
3
2
3
3
3
4
3
4
4
Header Global
Rating
(10 max)
5
5
6
5
5
9
7
4
4
4
4
5
4
5
5
5
5
5
9
6
5
  • 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 Bankvaults Surf forecast

The above surf forecast table for Bankvaults provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Bankvaults can be found by selecting the local surf guide option on the grey menu. Our Bankvaults 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 (Bankvaults) 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 Bankvaults 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.

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