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 Saturday 13 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
22.6° 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 9AM is: 1.3m 10s primary swell from a South-southeast direction and 0.6m 8s secondary swell from a East-northeast direction, 0.7m 4s secondary swell from a Northeast direction (forecast issued at 02:00am December 13). The wind direction is predicted to be cross-onshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 4.5ft (1.3m) | 10s |
| Afternoon (13 Dec) | 4ft (1.2m) | 10s |
| Evening (13 Dec) | 3.5ft (1.1m) | 10s |
Table - waves today at Rosa. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | ||||||||||||||||||||||
| 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 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 10 | 7 | 7 | 7 | 7 | 7 | 8 | 5 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 425 | 373 | 373 | 325 | 281 | 281 | 235 | 231 | 192 | 168 | 91 | 92 | 113 | 113 | 117 | 113 | 117 | 111 | 155 | 120 | 129 | 68 | 58 | 182 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross- on | on | on | on | glass | glass | glass | off | glass | on | on | cross- on | cross- on | cross | cross | cross | cross- on | cross- on | cross- on | cross | cross- off |
High Tide / height (m) | 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 | 11:46PM 0.48 | 10:07AM 0.45 | |||||||||||||||
Low Tide / height (m) | 3:15AM 0.22 | 9:15AM 0.40 | 3:47PM 0.33 | 10:43PM 0.42 | 4:14AM 0.25 | 10:22AM 0.42 | 4:38PM 0.26 | 5:13AM 0.27 | 5:25PM 0.19 | |||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | ||||||||||||||||||||||
| Sunrise | - | - | 5:11 | - | - | - | - | - | - | - | 5:11 | - | - | - | - | - | - | - | 5:11 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 7:05 | - | - | - | - | - | - | - | 7:06 | - | - | - | - | - | - | - | 7:07 | - |
 |  |  |  | | | |  | | | | | | | | | | | | | |  |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 2 | - |
| Temp. °C | 23 | 22 | 21 | 25 | 26 | 25 | 24 | 22 | 21 | 21 | 21 | 25 | 26 | 26 | 25 | 23 | 22 | 22 | 22 | 27 | 29 | 28 | 25 | 24 |
| Feels °C (?) | 23 | 22 | 22 | 26 | 26 | 26 | 27 | 26 | 25 | 24 | 23 | 28 | 27 | 27 | 27 | 26 | 24 | 24 | 24 | 29 | 30 | 29 | 28 | 27 |
- Map Icons:
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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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