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 8 pm Thursday 11 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
22.5° C
(Which is 1.1°C colder than average for this time of year)How big are the waves at Rosa today?
The current surf forecast for Rosa at 4AM is: 2.4m 11s primary swell from a South direction and 0.9m 10s secondary swell from a East-northeast direction (forecast issued at 08:00pm December 11). The wind direction is predicted to be cross-offshore and the swell rating is 4.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | 6.5ft (2.0m) | 11s |
| Afternoon (12 Dec) | 5.5ft (1.7m) | 10s |
| Evening (12 Dec) | 5ft (1.5m) | 10s |
Table - waves today at Rosa. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thu 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||||||||
| 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 | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |   |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 7 | 7 | 7 | 7 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 3388 | 2268 | 1848 | 1388 | 1128 | 901 | 707 | 622 | 482 | 416 | 407 | 373 | 325 | 281 | 281 | 240 | 240 | 200 | 188 | 186 | 204 | 191 | 209 | 251 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | off | cross- off | cross- off | cross | cross- on | cross- on | cross- on | cross | cross- off | cross- off | cross | cross | cross | cross- on | cross- on | cross- on | cross- on | cross | cross | cross | cross- on | cross- on | cross- on |
High Tide / height (m) | 4:59PM 0.55 | 10:34PM 0.30 | 6:32AM 0.40 | 11:54AM 0.48 | 6:08PM 0.50 | 11:11PM 0.36 | 7:34AM 0.41 | 12:11PM 0.45 | 7:38PM 0.46 | 11:37PM 0.42 | 8:55AM 0.43 | 12:01PM 0.43 | ||||||||||||
Low Tide / height (m) | 9:47PM 0.30 | 2:16AM 0.19 | 8:27AM 0.38 | 2:54PM 0.40 | 10:16PM 0.36 | 3:15AM 0.22 | 9:15AM 0.40 | 3:47PM 0.33 | 10:43PM 0.42 | 4:14AM 0.25 | 10:22AM 0.42 | |||||||||||||
Thu 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 5:11 | - | - | - | - | - | - | - | 5:11 | - | - | - | - | - | - | - | 5:11 | - | - | - |
| Sunset | 7:04 | - | - | - | - | - | - | - | 7:05 | - | - | - | - | - | - | - | 7:05 | - | - | - | - | - | - | - |
 |  | | | | |  | | |  |  | |  | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 25 | 21 | 20 | 20 | 20 | 25 | 27 | 24 | 24 | 23 | 22 | 21 | 20 | 24 | 26 | 25 | 24 | 22 | 21 | 21 | 21 | 24 | 27 | 27 |
| Feels °C (?) | 25 | 22 | 21 | 21 | 20 | 25 | 27 | 24 | 25 | 22 | 22 | 21 | 19 | 24 | 25 | 24 | 25 | 23 | 23 | 23 | 23 | 26 | 28 | 27 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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