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 Wednesday 10 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
25.8° C
(Which is 1.2°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: 0.7m 10s primary swell from a East direction and 0.5m 12s secondary swell from a South direction (forecast issued at 08:00pm December 10). An open ocean swell of 0.2m 2s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Dec) | 1.5ft (0.5m) | 10s |
| Afternoon (11 Dec) | 1.5ft (0.4m) | 10s |
| Evening (11 Dec) | 2.5ft (0.8m) | 15s |
Table - waves today at Canal. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wed 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||||||
| 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) (?) | 13 | 13 | 9 | 10 | 10 | 10 | 10 | 10 | 7 | 15 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 31 | 51 | 83 | 96 | 76 | 50 | 48 | 30 | 59 | 242 | 1264 | 1862 | 2036 | 1935 | 1651 | 1474 | 1200 | 1018 | 828 | 759 | 667 | 561 | 476 | 392 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | off | cross- off | cross- off | off | cross | on | on | glass | cross | cross- off | cross- off | cross- off | cross- off | cross | cross | cross | cross- off | cross- off | cross- off | cross- on | cross- on | cross | on |
High Tide / height (m) | 5:26PM 0.85 | 8:25AM 0.74 | 6:36PM 0.80 | 9:41AM 0.74 | 8:37PM 0.77 | 10:34AM 0.76 | ||||||||||||||||||
Low Tide / height (m) | 1:17AM 0.23 | 1:41PM 0.53 | 2:21AM 0.30 | 2:50PM 0.49 | 3:27AM 0.34 | |||||||||||||||||||
Wed 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 4:56 | - | - | - | - | - | - | - | 4:56 | - | - | - | - | - | - | - | 4:58 | - | - | - |
| Sunset | 6:27 | - | - | - | - | - | - | - | 6:28 | - | - | - | - | - | - | - | 6:29 | - | - | - | - | - | - | - |
 |  | | | | | | | | | | | |  | | | |  | |  |  |  |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 2 | 2 | - |
| Temp. °C | 28 | 28 | 28 | 26 | 25 | 30 | 28 | 27 | 25 | 24 | 23 | 22 | 22 | 27 | 28 | 28 | 26 | 25 | 24 | 25 | 24 | 24 | 24 | 27 |
| Feels °C (?) | 31 | 30 | 29 | 27 | 27 | 31 | 28 | 28 | 27 | 26 | 25 | 23 | 23 | 28 | 27 | 27 | 27 | 27 | 26 | 29 | 27 | 25 | 25 | 30 |
- 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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