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 6 am Sunday 14 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 9AM is: 0.8m 12s primary swell from a South-southwest direction and 0.8m 7s secondary swell from a West-southwest direction (forecast issued at 06:00am December 14). The wind direction is predicted to be offshore and the swell rating is 2.
| Time (WIB) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Dec) | 2.5ft (0.8m) | 12s |
| Afternoon (14 Dec) | 5ft (1.5m) | 9s |
| Evening (14 Dec) | 5ft (1.6m) | 9s |
Table - waves today at Bankvaults. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sunday 14 | Monday 15 | Tuesday 16 | Wed 17 | |||||||||||||||||||||
| 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 | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 12 | 12 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 14 | 13 | 13 | 19 | 18 | 18 | 18 | 18 | 17 | 16 | 16 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 169 | 248 | 169 | 129 | 380 | 463 | 412 | 324 | 228 | 153 | 120 | 111 | 203 | 229 | 222 | 181 | 260 | 255 | 255 | 252 | 350 | 390 | 386 | 381 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | off | off | off | off | cross- off | cross- off | off | off | off | off | off | glass | cross | cross | cross | cross | cross- off | cross- off | cross- off | glass | glass | glass | off |
High Tide / height (m) | 1:29AM 0.73 | 2:37PM 0.91 | 2:38AM 0.68 | 3:28PM 0.97 | 3:40AM 0.65 | 4:12PM 1.01 | ||||||||||||||||||
Low Tide / height (m) | 7:12AM 0.29 | 9:04PM 0.43 | 8:03AM 0.29 | 10:16PM 0.37 | 8:53AM 0.28 | 11:00PM 0.30 | ||||||||||||||||||
Sunday 14 | Monday 15 | Tuesday 16 | Wed 17 | |||||||||||||||||||||
| Sunrise | - | 6:09 | - | - | - | - | - | - | - | 6:09 | - | - | - | - | - | - | - | 6:11 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:23 | - | - | - | - | - | - | - | 6:23 | - | - | - | - | - | - | - | 6:24 | - | - | - |
 |  | |  | |  |  | | | | |  | | | | | | | | |  |  | |  | |
Rain (mm) | 1 | 1 | 1 | 1 | 3 | 2 | 1 | 3 | 4 | 3 | 3 | 4 | 3 | 1 | 3 | 1 | 1 | 1 | 4 | 2 | - | - | - | - |
| Temp. °C | 25 | 25 | 27 | 27 | 26 | 24 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 25 | 25 | 24 | 25 | 26 | 25 | 26 | 26 | 26 | 26 | 26 |
| Feels °C (?) | 28 | 28 | 29 | 28 | 26 | 25 | 27 | 28 | 27 | 28 | 29 | 27 | 28 | 28 | 27 | 26 | 28 | 29 | 28 | 29 | 30 | 31 | 30 | 30 |
- 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