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Bankvaults surfForecast / Mentawi Islands / Indonesia
12 Day Weather and Surf, issued 12 pm Saturday 19 Jul 2025 WIB
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 Saturday (Jul 19) at 7PM. The primary swell is predicted to be 1.8m and 17s period with a secondary swell of 0.8m and 10s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Bankvaults in the next 12 days are 1.9m 17s and forecast to arrive on Sunday (Jul 20) at 4PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Sat 19th Jul) | 6ft (1.8m) 17s |
| Best Surf | 7PM (Sat 19th Jul) | 6ft (1.8m) 17s |
| Most Powerful | 4PM (Sun 20th Jul) | 6ft (1.9m) 17s |
Table - best surf conditions forecast for Bankvaults over the next 12 days.
Short Range Forecast Mostly dry. Warm (max 28°C on Sat morning, min 26°C on Sat night). Wind will be generally light. | Days 3-6 Weather Summary Light rain (total 3mm), mostly falling on Wed night. Warm (max 28°C on Tue morning, min 26°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 19 | 17 | 15 | 17 | 17 | 16 | 15 | 14 | 14 | 13 | 13 | 13 | 15 | 14 | 13 | 20 | 20 | 18 | 18 | 17 | 16 |
Wave (?)Graph  | |||||||||||||||||||||
| Energy (?) | 2732 | 2254 | 1647 | 2273 | 2234 | 1682 | 1313 | 1198 | 815 | 844 | 635 | 491 | 641 | 787 | 732 | 868 | 757 | 1029 | 1381 | 1032 | 1712 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | on | glass | glass | on | glass | cross- on | on | glass | glass | on | glass | glass | cross- on | cross | cross | on | cross- on | glass | glass | glass |
High Tide / height (m) | 1:27AM 1.03 | 1:35PM 0.63 | 2:40AM 1.06 | 3:07PM 0.59 | 3:48AM 1.11 | 4:25PM 0.61 | 4:49AM 1.17 | 5:26PM 0.66 | 5:43AM 1.22 | 6:17PM 0.73 | 6:31AM 1.25 | 7:03PM 0.80 | |||||||||
Low Tide / height (m) | 6:10PM 0.17 | 7:54AM 0.34 | 7:10PM 0.20 | 9:31AM 0.29 | 8:20PM 0.21 | 10:50AM 0.21 | 9:34PM 0.19 | 11:46AM 0.14 | 10:41PM 0.16 | 12:31PM 0.09 | 11:38PM 0.12 | 1:09PM 0.06 | 12:28AM 0.10 | ||||||||
Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | |||||||||||||||
| Sunrise | 6:28 | - | - | 6:28 | - | - | 6:28 | - | - | 6:28 | - | - | 6:28 | - | - | 6:28 | - | - | 6:28 | - | - |
| Sunset | - | 6:30 | - | - | 6:30 | - | - | 6:30 | - | - | 6:30 | - | - | 6:30 | - | - | 6:30 | - | - | 6:30 | - |
 | |  |  | | | | | | | | | | |  | |  | | | |  | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | 1 | 1 | 2 | 1 | 2 |
| Temp. °C | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
| Feels °C (?) | 31 | 31 | 30 | 31 | 30 | 30 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 32 | 32 | 31 |
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Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Mentawi Islands
The wind is still cross-on at Bankvaults (light winds from the S at Pakanbaru/Simpan Airport 356 km from Bankvaults). 1.0m 15s groundswell from the SSW with a 0.7m 10s swell from the S and a 0.6m 19s long period groundswell, also from the S. Swells combining to make to make bigger set waves.
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Bankvaults surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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