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:
Ronco do Mar surfForecast / Ceará / Brazil
48hr Weather and Surf, issued 2 pm Friday 12 Dec 2025 -03Forecast update in hr min s Forecast update imminent
Ronco do Mar surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Ronco do Mar sea temperature is
28.1° C
(Which is slightly warmer than usual)How big are the waves at Ronco do Mar today?
The current surf forecast for Ronco do Mar at 7PM is: 0.6m 16s primary swell from a North-northeast direction and 0.8m 8s secondary swell from a North-northeast direction, 0.9m 6s secondary swell from a East direction (forecast issued at 02:00pm December 12). The wind direction is predicted to be cross-onshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | - | - |
| Afternoon (12 Dec) | 2ft (0.6m) | 15s |
| Evening (12 Dec) | 2ft (0.6m) | 16s |
Table - waves today at Ronco do Mar. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| 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) (?) | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 14 | 8 | 8 | 14 | 8 | 9 | 9 | 22 | 6 | 21 | 20 | 20 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 174 | 176 | 188 | 198 | 198 | 198 | 198 | 196 | 191 | 130 | 125 | 123 | 107 | 108 | 108 | 94 | 82 | 84 | 100 | 98 | 91 | 147 | 136 | 127 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross- on | cross- on | cross- on | cross | cross | cross | cross | cross- on | cross- on | cross- on | cross- on | cross | cross | cross | cross | cross- on | cross- on | cross- on | cross- on | cross | cross |
High Tide / height (m) | 10:54AM 2.06 | 11:16PM 2.06 | 11:55AM 2.07 | 12:20AM 2.02 | 12:49PM 2.12 | 1:17AM 2.02 | ||||||||||||||||||
Low Tide / height (m) | 5:00PM 0.85 | 5:31AM 0.78 | 6:06PM 0.83 | 6:27AM 0.79 | 7:04PM 0.76 | 7:17AM 0.76 | ||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 5:20 | - | - | - | - | - | - | - | 5:20 | - | - | - | - | - | - | - | 5:20 | - |
| Sunset | - | 5:38 | - | - | - | - | - | - | - | 5:38 | - | - | - | - | - | - | - | 5:39 | - | - | - | - | - | - |
 |  |  | |  | | | | | | | | |  |  | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 29 | 29 | 26 | 26 | 26 | 26 | 26 | 28 | 29 | 29 | 27 | 26 | 26 | 27 | 26 | 28 | 29 | 29 | 27 | 26 | 26 | 26 | 26 | 27 |
| Feels °C (?) | 28 | 29 | 27 | 28 | 28 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 27 | 28 | 27 | 28 | 28 | 29 | 28 | 27 | 27 | 26 | 26 | 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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