Bankvaults surfForecast / Mentawi Islands / Indonesia

information circle12 Day Weather and Surf, issued 6 am Tuesday 13 Jan 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
29.3° C
(Which is normal for this time of year)


Best Forecast Surf Conditions for Bankvaults this week:

The surf forecast for Bankvaults over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Jan 13) at 10AM. The primary swell is predicted to be 0.6m and 9s period with a secondary swell of 0.4m and 9s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Bankvaults in the next 12 days are 1.5m 17s and forecast to arrive on Sunday (Jan 18) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 6s period and expected on Monday (Jan 19) at 4AM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+)10AM (Tue 13th Jan)2ft (0.6m) 9s
Best Surf 4AM (Sun 18th Jan)3ft (0.9m) 19s
Most Powerful10PM (Sun 18th Jan)5ft (1.5m) 17s

Table - best surf conditions forecast for Bankvaults over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 11mm), heaviest on Thu afternoon. Warm (max 28°C on Tue morning, min 26°C on Tue night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 78mm), heaviest during Sat night. Warm (max 28°C on Sat morning, min 25°C on Fri night). Wind will be generally light.

Tuesday
13
Wednesday
14
Thursday
15
Friday
16
Saturday
17
Sunday
18
Monday
19
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
1
2
2
2
2
2
2
2
2
3
3
3
3
3
3
4
4
3
4
1
Swell
Height Map
Wave Height (m) & direction (?)
0.6
S
0.4
SW
0.6
SW
0.8
SW
0.9
SW
0.9
SW
1
SW
1
SW
1
SW
1.1
SW
1.1
SW
0.9
SW
0.7
SW
1
SW
1
SW
1.1
SW
0.9
SSW
1.4
SW
1.3
SSW
1.4
SSW
1.4
SSW
Period(s) (?)91817161515141414141313161615141717161615
Wave
Graph
(?)Metric surfscale
Energy kJ (?)63841883023703853663873874044512822684894354825281221822921818
Wind
(km/h)
10
NNW
10
WNW
10
WNW
5
NNW
5
WSW
10
W
5
NNW
5
NW
10
WNW
10
NNW
10
WNW
15
WNW
10
NW
15
WNW
15
WNW
15
NW
15
WNW
15
W
10
W
15
W
20
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcross-
off
cross-
off
offglasscross-
off
offglasscross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross
High Tide
/ height (m)
2:36PM
0.89
2:52AM
0.54
3:38PM
0.92
4:09AM
0.54
4:31PM
0.97
5:05AM
0.57
5:17PM
1.03
5:50AM
0.62
5:57PM
1.09
6:28AM
0.67
6:33PM
1.15
7:02AM
0.73
7:06PM
1.18
Low Tide
/ height (m)
9:42PM
0.43
7:37AM
0.31
11:02PM
0.35
8:47AM
0.30
11:37PM
0.28
9:53AM
0.27
12:06AM
0.21
10:47AM
0.22
12:34AM
0.16
11:33AM
0.18
1:02AM
0.11
12:15PM
0.15
1:30AM
0.08
Tuesday
13
Wednesday
14
Thursday
15
Friday
16
Saturday
17
Sunday
18
Monday
19
Sunrise6:24--6:24--6:24--6:24--6:26--6:26--6:26--
Sunset-6:37--6:37--6:37--6:38--6:38--6:38--6:38-
part cloud
thunderstorm
clear
clear
part cloud
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
thunderstorm
Rain (mm)
-2---2232351035149101911814
Temp. °C282827282827272727272726282827262726262726
Feels °C (?)313129323130313131303028303029282929282927
  • 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 12 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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