Bankvaults surfForecast / Mentawi Islands / Indonesia

information circle16 Day Weather and Surf, issued 6 pm Thursday 14 May 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 Friday (May 15) at 4AM. The primary swell is predicted to be 1.4m and 14s period with a secondary swell of 0.8m and 16s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Bankvaults in the next 16 days are 1.7m 16s and forecast to arrive on Friday (May 15) at 7AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Saturday (May 16) at 10AM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Fri 15th May)4.5ft (1.4m) 14s
Best Surf 4AM (Fri 15th May)4.5ft (1.4m) 14s
Most Powerful 7AM (Fri 15th May)5.5ft (1.7m) 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 49mm), heaviest during Fri afternoon. Warm (max 29°C on Sat morning, min 25°C on Sat night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 145mm), heaviest during Tue morning. Warm (max 28°C on Sun afternoon, min 25°C on Mon night). Wind will be generally light.

Thu
14
Friday
15
Saturday
16
Sunday
17
Monday
18
Tuesday
19
Wednesday
20
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
4
4
4
4
4
3
3
3
3
3
3
3
4
4
2
3
3
3
3
3
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.6
SSW
14
1.3
SSW
13
1.6
SSW
15
1.6
SSW
14
1.6
SSW
14
1.4
SSW
13
1.3
SSW
13
1.3
SSW
13
1
SSW
14
1
S
14
0.8
S
16
1.3
S
15
1.5
S
15
1.4
S
14
1.4
S
13
1.3
S
13
1
SW
16
1
SW
16
1.1
SW
16
1.1
SW
15
1.1
SW
15
Wave Graph
Metric surfscale
Energy kJ
876
615
1091
1047
989
722
538
534
425
377
333
746
984
758
663
555
504
492
619
557
550
Wind (km/h)
5
NNE
10
NW
10
N
10
NNW
15
NNW
15
NNW
15
NW
10
NNW
10
NNW
15
N
10
NNW
10
NNW
10
NNW
10
NW
25
NW
20
NNW
15
NW
15
NW
20
NW
15
NW
15
NNW
cross-off
off
off
off
off
off
off
off
off
off
off
off
off
cross-off
cross-off
off
off
off
off
off
off
High Tide
4:19PM0.86m
4:50AM1.17m
5:07PM0.86m
5:31AM1.27m
5:54PM0.85m
6:14AM1.35m
6:39PM0.83m
6:58AM1.38m
7:26PM0.80m
7:44AM1.36m
8:14PM0.77m
8:33AM1.30m
9:07PM0.74m
9:25AM1.22m
Low Tide
10:05PM0.12m
11:09AM0.12m
10:47PM0.06m
11:58AM0.03m
11:30PM0.02m
12:46PM-0.02m
00:13AM-0.01m
1:33PM-0.04m
00:57AM-0.01m
2:21PM-0.01m
1:42AM0.03m
3:10PM0.04m
2:30AM0.10m
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
thunderstorm
thunderstorm
mod rain
thunderstorm
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>
6:20
6:20
6:20
6:20
6:20
6:20
6:20
6:20
4
6
14
16
1
4
2
2
12
17
6
10
25
58
8
3
6
8
16
2
Temp °C
28
27
28
28
27
29
28
26
28
28
27
28
28
27
25
25
26
28
27
27
28
32
31
32
31
30
30
30
28
31
30
30
32
32
31
26
27
28
30
29
30
30
Swell 1
Height (m)
Direction
Period (s)
1.6
SSW
14
1.3
SSW
13
1.6
SSW
15
1.6
SSW
14
1.6
SSW
14
1.4
SSW
13
1.3
SSW
13
1.3
SSW
13
1
SSW
14
1
S
14
0.8
S
13
1.3
S
15
1.5
S
15
1.4
S
14
1.4
S
13
1.3
S
13
1.2
S
12
1
S
12
1.1
SW
16
1.1
SW
15
1.1
SW
15
Energy kJ
876
615
1091
1047
989
722
538
534
425
377
222
746
984
758
663
555
416
278
619
557
550
Swell 2
Height (m)
Direction
Period (s)
0.5
W
8
1
S
16
0.6
WNW
8
0.6
W
8
0.7
W
9
0.8
W
9
0.8
W
9
0.9
WNW
9
0.8
W
9
0.8
W
9
0.8
S
16
0.8
W
9
0.7
W
9
0.8
SW
18
0.7
SW
17
0.8
SW
16
1
SW
16
1
SW
16
1
S
12
1
S
11
0.9
S
11
Energy kJ
32
535
51
52
73
103
101
126
96
101
333
99
73
375
297
366
504
492
268
229
182
Swell 3
Height (m)
Direction
Period (s)
0.5
S
18
0.6
SW
16
0.5
SW
16
0.3
SSE
8
0.3
SSE
7
0.2
SSE
7
0.6
SW
16
0.2
SSE
6
0.5
SW
14
0.6
SW
14
0.8
W
9
0.5
SW
13
0.6
SW
19
0.7
WNW
8
0.5
W
8
0.5
WNW
8
0.4
WNW
8
0.4
WNW
8
0.4
WNW
7
0.4
WNW
7
0.3
WNW
7
Energy kJ
162
206
127
11
10
5
157
4
103
164
103
87
236
61
34
37
20
19
21
17
9
Wind waves
Height (m)
Direction
Period (s)
0.5
N
5
0.6
N
6
0.9
N
4
0.4
NNE
4
0.5
N
4
0.3
N
4
0.3
N
3
0.6
N
4
0.5
N
4
0.4
N
4
Energy kJ
11
25
28
5
6
2
2
14
7
5
Nearest Offshore or Glassy
Rating
(10 max)
4
4
4
4
4
3
3
3
3
3
3
3
4
4
2
3
3
3
3
3
3
Distance (km)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
157
0
0
0
0
0
0
Best forecast wave conditions in Mentawi Islands
Rating
(10 max)
4
4
4
4
4
3
3
3
3
3
3
3
4
4
4
3
3
3
3
3
3
Best forecast wave conditions in Indonesia
Rating
(10 max)
4
4
4
4
4
4
3
3
4
4
4
4
4
4
4
3
4
3
4
3
3
Header Global
Rating
(10 max)
4
5
5
5
5
4
5
5
7
6
4
4
4
5
4
4
5
5
5
5
4
  • 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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