Bankvaults surfForecast / Mentawi Islands / Indonesia

information circle12 Day Weather and Surf, issued 12 pm Thursday 11 Dec 2025 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 slightly warmer than usual)


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 Thursday (Dec 11) at 7PM. The primary swell is predicted to be 1.0m and 13s period with a secondary swell of 0.8m and 7s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Bankvaults in the next 12 days are 2.0m 10s and forecast to arrive on Monday (Dec 15) at 10AM. 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 Wednesday (Dec 17) at 10AM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+) 7PM (Thu 11th Dec)3.5ft (1.0m) 13s
Best Surf10AM (Mon 15th Dec)6.5ft (2.0m) 10s
Most Powerful10AM (Mon 15th Dec)6.5ft (2.0m) 10s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 52mm), heaviest during Thu night. Warm (max 26°C on Fri morning, min 24°C on Thu morning). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 139mm), heaviest during Sun night. Warm (max 27°C on Tue morning, min 24°C on Sun night). Winds decreasing (fresh winds from the W on Sun night, light winds from the WNW by Tue afternoon).

Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
3
2
2
1
2
2
1
1
2
2
1
0
4
3
3
3
3
2
2
3
2
Swell
Height Map
Wave Height (m) & direction (?)
1
SW
1
SW
0.9
SW
0.9
SW
0.9
SW
0.7
SSW
0.7
SSW
0.6
SSW
1.2
W
0.8
SSW
0.7
SW
1.1
WSW
2
W
1.9
W
0.8
SW
0.6
SW
0.8
SW
0.9
SW
1.1
SW
1.1
SW
1.1
SW
Period(s) (?)141313131214131371212810913181716161515
Wave
Graph
(?)Metric surfscale
Energy kJ (?)373352277269212215184137152180142171799593208255350381620605551
Wind
(km/h)
5
NNW
15
NNE
15
NNW
15
NW
15
NW
10
NW
20
WNW
20
W
10
NNW
10
NW
20
W
30
NW
15
NW
15
NW
10
NW
10
NW
10
WNW
20
WNW
20
NW
10
NW
20
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glasscross-
off
offcross-
off
offcross-
off
cross-
off
cross-
off
offoffcross-
off
cross-
off
offoffcross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
High Tide
/ height (m)
11:18PM
0.92
12:33PM
0.81
12:20AM
0.81
1:39PM
0.86
1:29AM
0.73
2:37PM
0.91
2:38AM
0.68
3:28PM
0.97
3:40AM
0.65
4:12PM
1.01
4:33AM
0.65
4:52PM
1.06
Low Tide
/ height (m)
4:33PM
0.35
5:34AM
0.23
5:45PM
0.43
6:22AM
0.27
7:18PM
0.47
7:12AM
0.29
9:04PM
0.43
8:03AM
0.29
10:16PM
0.37
8:53AM
0.28
11:00PM
0.30
9:39AM
0.25
11:35PM
0.23
Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Sunrise6:07--6:09--6:09--6:09--6:09--6:11--6:11--
Sunset-6:22--6:22--6:22--6:23--6:23--6:24--6:24-
light rain
cloud
mod rain
thunderstorm
thunderstorm
thunderstorm
mod rain
mod rain
thunderstorm
thunderstorm
mod rain
thunderstorm
mod rain
mod rain
mod rain
thunderstorm
mod rain
thunderstorm
mod rain
thunderstorm
thunderstorm
Rain (mm)
5-1012977113107799101713101244
Temp. °C242525262626262525252525242425272626252526
Feels °C (?)282726282829272628282623262628292928262828
  • 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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