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:
Praia dos Castelhanos (Ilha Bela) surfForecast / São Paulo / Brazil
48hr Weather and Surf, issued 2 am Sunday 14 Dec 2025 -03Forecast update in hr min s Forecast update imminent
Praia dos Castelhanos (Ilha Bela) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Praia dos Castelhanos (Ilha Bela) sea temperature is
24.5° C
(Which is normal for this time of year)How big are the waves at Praia dos Castelhanos (Ilha Bela) today?
The current surf forecast for Praia dos Castelhanos (Ilha Bela) at 7AM is: 0.6m 10s primary swell from a South-southeast direction and 0.3m 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) | 2ft (0.6m) | 10s |
| Afternoon (14 Dec) | 2ft (0.6m) | 10s |
| Evening (14 Dec) | 1.5ft (0.5m) | 10s |
Table - waves today at Praia dos Castelhanos (Ilha Bela). (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 | 11 | 10 | 10 | 10 | 10 | 10 | 9 | 8 | 8 | 8 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 106 | 106 | 78 | 78 | 78 | 77 | 72 | 51 | 50 | 49 | 48 | 34 | 44 | 41 | 39 | 38 | 37 | 35 | 35 | 35 | 46 | 48 | 55 | 59 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | off | glass | glass | cross- on | on | on | cross- on | cross- on | cross- on | glass | glass | cross- on | on | cross- on | cross- on | cross | cross | cross | glass | cross | cross- on | cross- off | cross- off |
High Tide / height (m) | 11:16AM 0.78 | 11:44PM 0.85 | 11:53AM 0.81 | 12:36AM 0.92 | 12:26PM 0.85 | |||||||||||||||||||
Low Tide / height (m) | 4:44AM 0.41 | 5:07PM 0.40 | 5:42AM 0.40 | 5:56PM 0.31 | 6:32AM 0.38 | 6:38PM 0.23 | ||||||||||||||||||
Sunday 14 | Monday 15 | Tuesday 16 | ||||||||||||||||||||||
| Sunrise | - | - | 5:07 | - | - | - | - | - | - | - | 5:07 | - | - | - | - | - | - | - | 5:07 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:43 | - | - | - | - | - | - | - | 6:44 | - | - | - | - | - | - | - | 6:44 | - |
 |  |  |  | |  | | | | | |  | | | |  | |  | | | |  | |  | |
Rain (mm) | - | - | - | - | - | 1 | - | - | - | - | - | - | - | 2 | 3 | 1 | 1 | - | - | - | - | 1 | 3 | 9 |
| Temp. °C | 25 | 24 | 25 | 26 | 27 | 26 | 26 | 25 | 24 | 24 | 25 | 27 | 27 | 26 | 25 | 24 | 24 | 25 | 26 | 29 | 29 | 29 | 25 | 24 |
| Feels °C (?) | 29 | 27 | 29 | 30 | 30 | 28 | 30 | 28 | 27 | 27 | 29 | 31 | 30 | 29 | 28 | 26 | 27 | 29 | 29 | 33 | 33 | 32 | 26 | 24 |
- 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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