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:
Matinhos surfForecast / Paraná / Brazil
48hr Weather and Surf, issued 2 am Saturday 13 Dec 2025 -03Forecast update in hr min s Forecast update imminent
Matinhos surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Matinhos sea temperature is
25.7° C
(Which is 1.3°C warmer than normal for this time of year)How big are the waves at Matinhos today?
The current surf forecast for Matinhos at 7AM is: 0.8m 10s primary swell from a South-southeast direction and 0.3m 8s secondary swell from a East direction (forecast issued at 02:00am December 13). The wind direction is predicted to be cross-shore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 2.5ft (0.8m) | 10s |
| Afternoon (13 Dec) | 2.5ft (0.7m) | 10s |
| Evening (13 Dec) | 2.5ft (0.7m) | 10s |
Table - waves today at Matinhos. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | ||||||||||||||||||||||
| 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 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 135 | 135 | 135 | 133 | 130 | 102 | 100 | 100 | 102 | 100 | 86 | 64 | 63 | 61 | 59 | 58 | 42 | 42 | 45 | 49 | 50 | 49 | 35 | 24 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | glass | cross | glass | cross | cross- on | on | glass | cross | cross | cross | cross- on | on | cross- on | cross- on | cross- off | glass | glass | glass | glass | cross- on | cross- on | cross | cross- on |
High Tide / height (m) | 3:46AM 0.47 | 10:09AM 1.02 | 3:55PM 0.57 | 10:27PM 1.10 | 10:59AM 1.05 | 11:27PM 1.13 | 11:47AM 1.08 | |||||||||||||||||
Low Tide / height (m) | 3:04AM 4:46AM 0.47 0.47 | 3:35PM 5:04PM 0.57 0.57 | 5:47AM 0.46 | 5:54PM 0.45 | 6:32AM 0.44 | 6:33PM 0.35 | ||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | ||||||||||||||||||||||
| Sunrise | - | - | 5:16 | - | - | - | - | - | - | - | 5:16 | - | - | - | - | - | - | - | 5:16 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:59 | - | - | - | - | - | - | - | 7:00 | - | - | - | - | - | - | - | 7:00 | - |
 | |  | |  | | |  | | | | | | | | | | |  | | | | |  | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 |
| Temp. °C | 22 | 22 | 22 | 22 | 26 | 26 | 25 | 24 | 23 | 22 | 22 | 24 | 25 | 26 | 25 | 24 | 24 | 23 | 23 | 26 | 29 | 28 | 27 | 24 |
| Feels °C (?) | 24 | 25 | 24 | 25 | 29 | 28 | 28 | 28 | 26 | 24 | 24 | 27 | 27 | 28 | 28 | 27 | 28 | 27 | 27 | 30 | 31 | 32 | 30 | 27 |
- 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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