Surf Forecast Surf Report

Bankvaults surfForecast / Mentawi Islands / Indonesia

information circle12 Day Weather and Surf, issued 6 am Wednesday 21 May 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
29.5° 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 Wednesday (May 21) at 1PM. The primary swell is predicted to be 0.9m and 17s period with a secondary swell of 0.7m and 12s. The wind is predicted to be onshore as the swell arrives.

The most powerful waves expected at Bankvaults in the next 12 days are 1.7m 16s and forecast to arrive on Thursday (May 22) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Tuesday (May 27) at 4PM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+) 1PM (Wed 21st May)3ft (0.9m) 17s
Best Surf 1AM (Thu 22nd May)4.5ft (1.4m) 17s
Most Powerful 4PM (Thu 22nd May)5.5ft (1.7m) 16s

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

Updates in  hr  min  s Forecast update imminent
Wednesday
21
Thursday
22
Friday
23
Saturday
24
Sunday
25
Monday
26
Tuesday
27
Wednesday
28
Thursday
29
Friday
30
Saturday
31
Sunday
01
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.9
SW
1.1
SW
1.4
SW
1.6
SW
1.7
SSW
1.6
SW
1.2
SSW
1.5
SSW
1.6
SSW
1.5
SSW
1.3
SSW
1.3
SSW
1.2
SSW
1.1
SSW
1
SSW
1
SSW
0.9
SSW
0.7
SSW
0.5
S
0.8
S
0.8
S
0.7
S
0.6
SW
0.8
SW
1.6
SW
1.9
SW
2.2
SW
2.3
SW
2.2
SW
2.1
SW
1.7
SSW
1.8
SW
1.7
SSW
0.8
SSW
1.2
SSW
1.9
SSW
Period(s) (?)1717171616151815161515141313131313121212992020181816161514141313201817
Wave
Graph
(?)Metric surfscale
Energy (?)414679106112551373110392810691184949752638479440362321242157751729974239537164622172465254522041785112611448904858452089
Wind
(km/h)
10
SSE
10
S
5
WSW
0
N
10
SW
5
W
5
NNW
0
SE
10
NNW
5
NNW
10
W
10
NNW
10
NNW
5
NW
15
NW
15
NNW
15
NNW
20
NW
20
NNW
20
NNW
15
NW
15
NNW
15
NNW
15
NW
15
N
15
N
10
NNW
5
N
5
SSE
5
SW
5
E
10
S
10
SSE
10
ESE
10
SSE
5
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
oncross-
on
glassglasscrosscross-
off
glassglassoffoffcross-
off
offoffoffoffoffoffoffoffoffoffoffoffcross-
off
offoffoffglassglassglassglassononcross-
on
onglass
High Tide
/ height (m)
12:16PM
0.91
1:52AM
0.79
1:37PM
0.88
2:51AM
0.92
2:49PM
0.87
3:42AM
1.06
3:51PM
0.86
4:28AM
1.19
4:47PM
0.85
5:14AM
1.29
5:39PM
0.83
6:00AM
1.35
6:27PM
0.81
6:46AM
1.37
7:15PM
0.78
7:33AM
1.34
8:03PM
0.75
8:20AM
1.28
8:54PM
0.73
9:09AM
1.19
9:49PM
0.71
9:59AM
1.09
10:51PM
0.71
Low Tide
/ height (m)
6:58PM
0.24
7:10AM
0.40
7:57PM
0.21
8:38AM
0.34
8:50PM
0.16
9:51AM
0.24
9:39PM
0.11
10:52AM
0.13
10:26PM
0.07
11:45AM
0.05
11:11PM
0.03
12:35PM
-0.01
11:56PM
0.01
1:23PM
-0.02
12:41AM
0.01
2:09PM
0.00
1:26AM
0.05
2:56PM
0.05
2:12AM
0.11
3:42PM
0.11
3:00AM
0.20
4:30PM
0.17
3:53AM
0.29
Wednesday
21
Thursday
22
Friday
23
Saturday
24
Sunday
25
Monday
26
Tuesday
27
Wednesday
28
Thursday
29
Friday
30
Saturday
31
Sunday
01
Sunrise6:18--6:18--6:18--6:18--6:18--6:18--6:18--6:18--6:18--6:18--6:18--6:20--
Sunset-6:20--6:20--6:20--6:20--6:20--6:20--6:20--6:20--6:21--6:21--6:21--6:21-
clearclearpart cloudpart cloudthunderstorm thunderstorm part cloudthunderstorm clearthunderstorm thunderstorm thunderstorm rain showersthunderstorm rain showersrain showersthunderstorm rain showerspart cloudthunderstorm part cloudpart cloudclearpart cloudthunderstorm thunderstorm thunderstorm clearpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudpart cloud
Rain (mm)
----23-1-131112121-1----141---------
Temp. °C292928282927282828282927282927292927303027303028292928292928292928282928
Feels °C (?)323232333231333333323331323330313129313130323331323232343332333331323233

Short Range Forecast: Light rain (total 6mm), mostly falling on Thu afternoon. Warm (max 29°C on Wed morning, min 26°C on Thu night). Wind will be generally light.

Days 3-6 Weather Summary Moderate rain (total 13mm), heaviest on Sat afternoon. Warm (max 29°C on Sat afternoon, min 26°C on Sat night). Wind will be generally light.

Days 6-9 Weather Summary Light rain (total 7mm), mostly falling on Thu afternoon. Warm (max 30°C on Tue morning, min 27°C on Tue night). Wind will be generally light.

Long Range Forecast: Mostly dry. Warm (max 29°C on Fri morning, min 27°C on Fri night). Wind will be generally light.

  • 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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