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:
Marengo surfForecast / VIC – Cape Otway / Australia
48hr Weather and Surf, issued 10 pm Thursday 11 Dec 2025 AEDTForecast update in hr min s Forecast update imminent
Marengo surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Marengo sea temperature is
15.5° C
(Which is normal for this time of year)How big are the waves at Marengo today?
The current surf forecast for Marengo at 5AM is: 1.1m 13s primary swell from a Southwest direction and 0.5m 5s secondary swell from a Southeast direction, 0.4m 5s secondary swell from a East direction (forecast issued at 10:00pm December 11). The wind direction is predicted to be cross-onshore.
| Time (AEDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | 3ft (0.9m) | 13s |
| Afternoon (12 Dec) | 3ft (0.9m) | 13s |
| Evening (12 Dec) | 2.5ft (0.8m) | 13s |
Table - waves today at Marengo. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thu 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||||||||
| 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |   |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 15 | 14 | 14 | 13 | 13 | 13 | 7 | 8 | 10 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 471 | 416 | 379 | 352 | 269 | 273 | 277 | 241 | 199 | 196 | 181 | 178 | 175 | 178 | 221 | 590 | 506 | 386 | 330 | 277 | 970 | 216 | 1924 | 3746 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | on | cross- on | cross- on | cross- on | on | on | cross- on | cross- on | cross- off | off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | off | off | cross- off | off | cross- off |
High Tide / height (m) | 5:49PM 2.19 | 6:10AM 1.68 | 6:30PM 2.00 | 7:24AM 1.62 | 7:13PM 1.82 | 8:51AM 1.63 | ||||||||||||||||||
Low Tide / height (m) | 12:17AM 0.62 | 11:59AM 0.65 | 1:07AM 0.60 | 12:56PM 0.88 | 2:02AM 0.58 | 2:15PM 1.09 | ||||||||||||||||||
Thu 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 5:52 | - | - | - | - | - | - | - | 5:52 | - | - | - | - | - | - | - | 5:54 | - | - | - |
| Sunset | 8:42 | - | - | - | - | - | - | - | 8:43 | - | - | - | - | - | - | - | 8:44 | - | - | - | - | - | - | - |
 |  | | | | |  | |  |  |  |  | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 12 | 11 | 12 | 11 | 16 | 21 | 24 | 20 | 19 | 19 | 18 | 16 | 16 | 18 | 18 | 17 | 15 | 13 | 13 | 13 | 14 | 14 | 13 | 14 |
| Feels °C (?) | 9 | 9 | 10 | 8 | 14 | 20 | 23 | 19 | 18 | 18 | 16 | 16 | 15 | 16 | 15 | 13 | 12 | 11 | 10 | 8 | 8 | 7 | 6 | 6 |
- 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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