Nazare Big Wave Challenge Gets Yellow Alert, Could Run Saturday in Giant Waves
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Surf Forecasts:
Bankvaults surfForecast / Mentawi Islands / Indonesia
48hr Weather and Surf, issued 12 pm Tuesday 16 Dec 2025 WIBForecast 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
29.2° C
(Which is slightly warmer than usual)How big are the waves at Bankvaults today?
The current surf forecast for Bankvaults at 6PM is: 0.9m 16s primary swell from a Southwest direction and 0.9m 12s secondary swell from a Southwest direction (forecast issued at 12:00pm December 16). The wind direction is predicted to be cross-offshore and the swell rating is 3.
| Time (WIB) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | 3ft (0.9m) | 13s |
| Afternoon (16 Dec) | 2.5ft (0.7m) | 17s |
| Evening (16 Dec) | 3ft (0.9m) | 16s |
Table - waves today at Bankvaults. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 18 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 255 | 252 | 350 | 390 | 386 | 381 | 437 | 496 | 539 | 612 | 605 | 589 | 631 | 695 | 543 | 536 | 536 | 606 | 521 | 507 | 363 | 347 | 304 | 299 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- off | cross- off | cross- off | off | off | off | cross- off | off | off | glass | glass | cross- off | off | cross- off | cross- off | cross- off | glass | glass | glass | glass | cross- off | cross- off | off |
High Tide / height (m) | 4:12PM 1.01 | 4:33AM 0.65 | 4:52PM 1.06 | 5:18AM 0.65 | 5:31PM 1.09 | 5:59AM 0.66 | ||||||||||||||||||
Low Tide / height (m) | 11:00PM 0.30 | 9:39AM 0.25 | 11:35PM 0.23 | 10:23AM 0.21 | 12:07AM 0.17 | |||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:11 | - | - | - | - | - | - | - | 6:11 | - | - | - | - | - | - | - | 6:11 |
| Sunset | - | - | 6:24 | - | - | - | - | - | - | - | 6:24 | - | - | - | - | - | - | - | 6:25 | - | - | - | - | - |
 |  | |  |  |  | | | | |  |  | | | | |  | | | |  | | | | |
Rain (mm) | - | 4 | 3 | 1 | - | - | 2 | 4 | 4 | 2 | 2 | 2 | 2 | 1 | 1 | - | - | - | 1 | - | - | - | 1 | 2 |
| Temp. °C | 27 | 26 | 26 | 26 | 26 | 26 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 26 | 27 | 28 | 27 | 27 | 27 | 26 | 25 | 26 |
| Feels °C (?) | 31 | 29 | 29 | 29 | 29 | 28 | 27 | 29 | 29 | 29 | 30 | 30 | 29 | 30 | 29 | 29 | 30 | 32 | 31 | 32 | 31 | 30 | 28 | 29 |
- 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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