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:
Canal surfForecast / Rio de Janeiro / Brazil
48hr Weather and Surf, issued 8 pm Tuesday 16 Dec 2025 -03Forecast update in hr min s Forecast update imminent
Canal surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Canal sea temperature is
27.1° C
(Which is 2.4°C warmer than normal for this time of year)How big are the waves at Canal today?
The current surf forecast for Canal at 3AM is: 0.6m 8s primary swell from a East direction and 0.4m 10s secondary swell from a South-southeast direction, 0.3m 2s secondary swell from a Southwest direction (forecast issued at 08:00pm December 16). The wind direction is predicted to be cross-shore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | 4.5ft (1.3m) | 5s |
| Afternoon (17 Dec) | 5.5ft (1.7m) | 8s |
| Evening (17 Dec) | 6ft (1.9m) | 8s |
Table - waves today at Canal. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tue 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| 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) (?) | 7 | 9 | 8 | 8 | 8 | 5 | 7 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 48 | 53 | 46 | 46 | 50 | 77 | 277 | 374 | 522 | 485 | 459 | 422 | 311 | 311 | 251 | 262 | 358 | 352 | 325 | 301 | 253 | 205 | 197 | 149 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | glass | cross | cross | cross- on | on | cross- on | cross- on | cross- on | on | on | on | on | glass | glass | glass | cross- on | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross |
High Tide / height (m) | 1:14AM 0.95 | 12:55PM 0.85 | 1:52AM 0.98 | 1:24PM 0.87 | 2:26AM 1.01 | 1:52PM 0.89 | ||||||||||||||||||
Low Tide / height (m) | 6:26PM 0.18 | 7:00AM 0.32 | 7:06PM 0.11 | 7:40AM 0.31 | 7:44PM 0.06 | 8:18AM 0.30 | ||||||||||||||||||
Tue 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 4:58 | - | - | - | - | - | - | - | 5:00 | - | - | - | - | - | - | - | 5:00 | - | - | - |
| Sunset | 6:30 | - | - | - | - | - | - | - | 6:31 | - | - | - | - | - | - | - | 6:31 | - | - | - | - | - | - | - |
 |  |  |  | |  | | | |  | | |  | | | | | | | | |  | | | |
Rain (mm) | 1 | - | 1 | - | 1 | 3 | 2 | 1 | 1 | 1 | 2 | 1 | - | - | - | 1 | 2 | 1 | - | - | - | - | - | - |
| Temp. °C | 27 | 27 | 25 | 24 | 25 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 21 | 20 | 20 | 20 | 19 | 20 | 22 | 23 | 24 |
| Feels °C (?) | 31 | 32 | 28 | 24 | 26 | 22 | 21 | 21 | 22 | 23 | 23 | 23 | 23 | 23 | 24 | 23 | 22 | 21 | 21 | 20 | 21 | 23 | 23 | 23 |
- 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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