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:
Itamambuca surfForecast / São Paulo / Brazil
48hr Weather and Surf, issued 2 am Sunday 14 Dec 2025 -03Forecast update in hr min s Forecast update imminent
Itamambuca surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Itamambuca sea temperature is
24.9° C
(Which is normal for this time of year)How big are the waves at Itamambuca today?
The current surf forecast for Itamambuca at 5AM is: 0.7m 10s primary swell from a South-southeast direction and 0.4m 7s secondary swell from a East direction (forecast issued at 02:00am December 14). The wind direction is predicted to be glassy.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Dec) | 2.5ft (0.7m) | 10s |
| Afternoon (14 Dec) | 2ft (0.6m) | 10s |
| Evening (14 Dec) | 2ft (0.6m) | 10s |
Table - waves today at Itamambuca. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sunday 14 | Monday 15 | Tuesday 16 | ||||||||||||||||||||||
| 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 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 9 | 8 | 8 | 8 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 136 | 106 | 106 | 104 | 104 | 78 | 77 | 72 | 69 | 49 | 49 | 48 | 49 | 28 | 57 | 56 | 55 | 51 | 50 | 49 | 49 | 66 | 78 | 60 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | glass | glass | glass | cross | cross- on | glass | glass | glass | glass | glass | glass | on | glass | glass | cross- off | off | cross- off | off | glass | on | on | cross- on | cross |
High Tide / height (m) | 11:23AM 0.77 | 11:52PM 0.84 | 11:58AM 0.81 | 12:41AM 0.91 | 12:30PM 0.84 | |||||||||||||||||||
Low Tide / height (m) | 4:38AM 0.41 | 5:03PM 0.40 | 5:38AM 0.40 | 5:54PM 0.31 | 6:31AM 0.38 | 6:39PM 0.22 | ||||||||||||||||||
Sunday 14 | Monday 15 | Tuesday 16 | ||||||||||||||||||||||
| Sunrise | - | - | 5:07 | - | - | - | - | - | - | - | 5:07 | - | - | - | - | - | - | - | 5:07 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:40 | - | - | - | - | - | - | - | 6:42 | - | - | - | - | - | - | - | 6:42 | - |
 |  |  | | |  | |  | | | |  | |  | |  | | | | | | | |  | |
Rain (mm) | 4 | - | - | - | - | - | - | - | - | - | - | - | - | 2 | 4 | 3 | 1 | 1 | - | - | - | 1 | 4 | 12 |
| Temp. °C | 25 | 25 | 25 | 26 | 26 | 28 | 27 | 25 | 25 | 25 | 25 | 28 | 29 | 27 | 26 | 25 | 24 | 25 | 26 | 30 | 30 | 29 | 26 | 24 |
| Feels °C (?) | 29 | 29 | 29 | 31 | 30 | 31 | 32 | 29 | 29 | 28 | 28 | 31 | 32 | 32 | 32 | 29 | 28 | 29 | 30 | 34 | 33 | 33 | 30 | 26 |
- 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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