Nazare Big Wave Challenge Gets Yellow Alert, Could Run Saturday in Giant Waves
70-foot plus waves predicted for Portuguese big wave tow surfing competition.
Surf Forecasts:
Bankvaults surfForecast / Mentawi Islands / Indonesia
48hr Weather and Surf, issued 12 pm Friday 12 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
29.3° 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 12s primary swell from a Southwest direction and 0.6m 6s secondary swell from a West direction (forecast issued at 12:00pm December 12). An open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (WIB) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | 3ft (0.9m) | 13s |
| Afternoon (12 Dec) | 3ft (0.9m) | 12s |
| Evening (12 Dec) | 2.5ft (0.7m) | 14s |
Table - waves today at Bankvaults. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| 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 | 13 | 12 | 12 | 14 | 14 | 14 | 7 | 7 | 7 | 7 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 9 | 9 | 9 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 269 | 193 | 212 | 209 | 218 | 215 | 215 | 226 | 286 | 315 | 186 | 282 | 147 | 123 | 169 | 248 | 131 | 158 | 232 | 217 | 289 | 238 | 176 | 134 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off | cross- off | cross- off | glass | cross | cross- off | off | off | cross- off | cross- off |
High Tide / height (m) | 12:20AM 0.81 | 1:39PM 0.86 | 1:29AM 0.73 | 2:37PM 0.91 | 2:38AM 0.68 | |||||||||||||||||||
Low Tide / height (m) | 5:45PM 0.43 | 6:22AM 0.27 | 7:18PM 0.47 | 7:12AM 0.29 | 9:04PM 0.43 | |||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:09 | - | - | - | - | - | - | - | 6:09 | - | - | - | - | - | - | - | 6:09 |
| Sunset | - | - | 6:22 | - | - | - | - | - | - | - | 6:22 | - | - | - | - | - | - | - | 6:23 | - | - | - | - | - |
 | | |  | | |  |  | | | | | | | | | | |  |  | | |  | | |
Rain (mm) | 1 | 3 | 4 | 2 | 2 | 4 | 10 | 10 | 5 | 7 | 13 | 7 | 2 | 1 | 1 | 2 | 4 | 6 | 4 | 2 | 2 | 2 | 2 | 3 |
| Temp. °C | 25 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 24 | 24 | 25 | 26 | 24 | 24 | 24 |
| Feels °C (?) | 27 | 28 | 29 | 27 | 26 | 27 | 25 | 25 | 26 | 27 | 27 | 27 | 27 | 28 | 27 | 28 | 29 | 29 | 28 | 27 | 28 | 26 | 26 | 25 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
Buy Less, Surf More This Black Friday
Surf-forecast is providing a free, all-access pass to our premium features and 12-day forecasts all weekend.
Quiksilver Teams Up With PrimaLoft® For World’s First Thermal Layering System for a Wetsuit.
Previously used in our snow jackets for mountain conditions, PrimaLoft® technology is making its debut in the surf industry. The aim is to bring mountain-grade warmth to the waves.
Vancouver Island’s Day Of Days With Reed Platenius
Surf-Forecast recently helped the 21-year-old Canadian pro surfer and adventurer score some cold water perfection at home.
Read more
Discover more articles and updates in the Greenroom.
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.
Nearest