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:
Rosa surfForecast / Santa Catarina – Sul / Brazil
48hr Weather and Surf, issued 2 am Monday 15 Dec 2025 -03Forecast update in hr min s Forecast update imminent
Rosa surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Rosa sea temperature is
23.1° C
(Which is slightly cooler than normal)How big are the waves at Rosa today?
The current surf forecast for Rosa at 8AM is: 0.7m 10s primary swell from a Southeast direction and 0.7m 8s secondary swell from a East-northeast direction, 0.2m 2s secondary swell from a North-northeast direction (forecast issued at 02:00am December 15). The wind direction is predicted to be cross-onshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | 2.5ft (0.7m) | 10s |
| Afternoon (15 Dec) | 3.5ft (1.0m) | 7s |
| Evening (15 Dec) | 3ft (0.9m) | 7s |
Table - waves today at Rosa. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | ||||||||||||||||||||||
| 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    | |||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 10 | 10 | 10 | 7 | 9 | 7 | 10 | 10 | 10 | 8 | 6 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 9 | 9 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 96 | 98 | 100 | 98 | 94 | 108 | 56 | 77 | 61 | 64 | 48 | 57 | 261 | 362 | 343 | 310 | 269 | 246 | 253 | 280 | 399 | 471 | 365 | 325 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- off | cross | cross- on | on | cross- on | cross- on | cross- on | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- on | cross- on | on | cross- on |
High Tide / height (m) | 10:07AM 0.45 | 12:05AM 0.53 | 10:54AM 0.47 | 12:35AM 0.58 | 11:33AM 0.49 | |||||||||||||||||||
Low Tide / height (m) | 5:13AM 0.27 | 5:25PM 0.19 | 6:10AM 0.28 | 6:08PM 0.14 | 7:02AM 0.29 | 6:47PM 0.10 | ||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | ||||||||||||||||||||||
| Sunrise | - | - | 5:11 | - | - | - | - | - | - | - | 5:11 | - | - | - | - | - | - | - | 5:11 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 7:07 | - | - | - | - | - | - | - | 7:07 | - | - | - | - | - | - | - | 7:07 | - |
 | |  | | | |  |  |  | |  | | | | |  | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 22 | 21 | 21 | 26 | 28 | 27 | 26 | 25 | 24 | 23 | 23 | 22 | 21 | 22 | 22 | 21 | 20 | 19 | 18 | 21 | 22 | 21 | 21 | 20 |
| Feels °C (?) | 25 | 23 | 23 | 28 | 29 | 28 | 28 | 27 | 27 | 26 | 25 | 20 | 19 | 20 | 20 | 20 | 19 | 18 | 17 | 20 | 21 | 19 | 20 | 19 |
- 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 Rosa 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