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:
Shacks surfForecast / Puerto Rico / Puerto Rico
48hr Weather and Surf, issued 1 pm Tuesday 16 Dec 2025 ASTForecast update in hr min s Forecast update imminent
Shacks surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Shacks sea temperature is
28.3° C
(Which is 1.3°C warmer than normal for this time of year)How big are the waves at Shacks today?
The current surf forecast for Shacks at 7PM is: 0.9m 9s primary swell from a East-northeast direction and 0.4m 14s secondary swell from a Northeast direction, 0.7m 4s secondary swell from a East-northeast direction (forecast issued at 01:00pm December 16). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (AST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | 3.5ft (1.1m) | 9s |
| Afternoon (16 Dec) | 3.5ft (1.0m) | 9s |
| Evening (16 Dec) | 3ft (0.9m) | 9s |
Table - waves today at Shacks. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 9 | 9 | 9 | 9 | 10 | 13 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 6 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 176 | 176 | 176 | 142 | 145 | 402 | 833 | 847 | 772 | 667 | 561 | 494 | 478 | 403 | 396 | 374 | 332 | 342 | 407 | 399 | 454 | 162 | 198 | 432 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- on | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross | cross | cross- off | cross- off | cross- off |
High Tide / height (m) | 5:30PM 0.21 | 6:49AM 0.43 | 6:18PM 0.20 | 7:28AM 0.44 | 7:04PM 0.19 | |||||||||||||||||||
Low Tide / height (m) | 1:02PM 0.11 | 11:44PM -0.02 | 1:44PM 0.09 | 12:25AM -0.03 | 2:23PM 0.07 | 1:05AM -0.04 | ||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:52 | - | - | - | - | - | - | - | 6:54 | - | - | - | - | - | - | - | 6:54 |
| Sunset | - | - | 5:53 | - | - | - | - | - | - | - | 5:54 | - | - | - | - | - | - | - | 5:54 | - | - | - | - | - |
 | |  |  | | | | | | | |  | | | |  | | | | | | | | | |
Rain (mm) | - | - | 2 | - | - | - | - | - | - | - | 3 | 1 | - | - | - | - | - | - | - | - | - | 1 | 1 | - |
| Temp. °C | 26 | 27 | 27 | 26 | 25 | 24 | 24 | 24 | 27 | 27 | 26 | 25 | 25 | 23 | 23 | 24 | 27 | 27 | 26 | 25 | 25 | 25 | 24 | 25 |
| Feels °C (?) | 28 | 28 | 28 | 28 | 27 | 25 | 25 | 25 | 27 | 26 | 27 | 27 | 27 | 23 | 23 | 25 | 25 | 25 | 24 | 24 | 24 | 25 | 24 | 24 |
- 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 Shacks 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