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:
Itaipu surfForecast / São Paulo / Brazil
48hr Weather and Surf, issued 2 pm Monday 15 Dec 2025 -03Forecast update in hr min s Forecast update imminent
Itaipu surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Itaipu sea temperature is
24.2° C
(Which is normal for this time of year)Nearby Cam: 3km away, Praia Grande SP Ao Vivo - Boqueirão - Previsão das Ondas Surf Z Shapes!
How big are the waves at Itaipu today?
The current surf forecast for Itaipu at 8PM is: 0.4m 10s primary swell from a South-southeast direction and 0.4m 6s secondary swell from a Southeast direction (forecast issued at 02:00pm December 15). The wind direction is predicted to be cross-offshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | - | - |
| Afternoon (15 Dec) | 1.5ft (0.4m) | 10s |
| Evening (15 Dec) | 1.5ft (0.4m) | 10s |
Table - waves today at Itaipu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| 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 | 0 AM | 3 AM | 6 AM | 9 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 10 | 10 | 4 | 6 | 7 | 8 | 8 | 8 | 8 | 8 | 7 | 8 | 8 | 8 | 8 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 41 | 40 | 38 | 38 | 36 | 34 | 34 | 35 | 46 | 38 | 24 | 72 | 187 | 265 | 173 | 187 | 183 | 171 | 121 | 178 | 150 | 142 | 145 | 141 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross- on | cross | cross- off | cross- off | off | off | off | cross- on | cross- on | cross- on | on | on | on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross- on |
High Tide / height (m) | 11:54AM 0.88 | 12:38AM 0.99 | 12:29PM 0.92 | 1:18AM 1.06 | 1:01PM 0.96 | 1:52AM 1.12 | ||||||||||||||||||
Low Tide / height (m) | 6:04PM 0.34 | 6:39AM 0.40 | 6:45PM 0.24 | 7:22AM 0.38 | 7:24PM 0.17 | 8:01AM 0.36 | ||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 5:11 | - | - | - | - | - | - | - | 5:11 | - | - | - | - | - | - | - | 5:13 | - |
| Sunset | - | - | 6:47 | - | - | - | - | - | - | - | 6:49 | - | - | - | - | - | - | - | 6:50 | - | - | - | - | - |
 | | |  | | |  | |  | |  |  | | | | | | | |  | | | | | |
Rain (mm) | 1 | 2 | 1 | - | - | - | - | - | - | 1 | 51 | 4 | 3 | 2 | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 32 | 32 | 26 | 23 | 23 | 22 | 23 | 23 | 24 | 24 | 23 | 23 | 22 | 22 | 22 | 22 | 23 |
| Feels °C (?) | 30 | 30 | 30 | 29 | 29 | 29 | 28 | 34 | 34 | 28 | 22 | 23 | 21 | 23 | 23 | 23 | 22 | 21 | 21 | 20 | 20 | 21 | 22 | 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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