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:
Jaconé surfForecast / Rio de Janeiro / Brazil
48hr Weather and Surf, issued 8 pm Saturday 13 Dec 2025 -03Forecast update in hr min s Forecast update imminent
Jaconé surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Jaconé sea temperature is
26.1° C
(Which is 1.5°C warmer than normal for this time of year)How big are the waves at Jaconé today?
The current surf forecast for Jaconé at 4AM is: 1.0m 10s primary swell from a South direction and 0.4m 9s secondary swell from a East direction (forecast issued at 08:00pm December 13). The wind direction is predicted to be cross-shore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Dec) | 3ft (0.9m) | 10s |
| Afternoon (14 Dec) | 3ft (0.9m) | 10s |
| Evening (14 Dec) | 2.5ft (0.8m) | 10s |
Table - waves today at Jaconé. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sat 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||||||||||
| 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) (?) | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 10 | 10 | 10 | 8 | 7 | 8 | 8 | 9 | 8 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 300 | 290 | 240 | 200 | 194 | 158 | 156 | 156 | 123 | 122 | 122 | 92 | 87 | 64 | 70 | 71 | 71 | 82 | 117 | 310 | 63 | 74 | 361 | 151 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | cross- on | cross | glass | off | glass | cross- off | cross- off | off | off | glass | glass | glass | cross- on | cross | cross- off | off | glass | cross- off | glass | glass | glass | cross |
High Tide / height (m) | 10:40PM 0.80 | 11:18AM 0.80 | 11:45PM 0.85 | 11:54AM 0.82 | 12:35AM 0.91 | 12:26PM 0.84 | ||||||||||||||||||
Low Tide / height (m) | 3:52PM 0.41 | 4:24AM 0.34 | 4:49PM 0.32 | 5:20AM 0.33 | 5:38PM 0.24 | 6:09AM 0.32 | ||||||||||||||||||
Sat 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 4:58 | - | - | - | - | - | - | - | 4:58 | - | - | - | - | - | - | - | 4:58 | - | - | - |
| Sunset | 6:30 | - | - | - | - | - | - | - | 6:30 | - | - | - | - | - | - | - | 6:30 | - | - | - | - | - | - | - |
 |  |  |  |  |  |  |  | |  | |  |  | | | | |  | | | | | | | |
Rain (mm) | - | - | 2 | 6 | 6 | 1 | - | 1 | 1 | - | - | - | - | - | - | - | 1 | 1 | - | 1 | - | - | - | 1 |
| Temp. °C | 25 | 24 | 24 | 23 | 23 | 25 | 28 | 26 | 25 | 25 | 24 | 24 | 24 | 27 | 27 | 27 | 26 | 25 | 24 | 24 | 25 | 26 | 29 | 28 |
| Feels °C (?) | 26 | 27 | 27 | 26 | 27 | 29 | 33 | 29 | 28 | 28 | 28 | 28 | 28 | 31 | 29 | 29 | 29 | 28 | 28 | 28 | 30 | 31 | 34 | 31 |
- 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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