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 Saturday 13 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
16.2° C
(Which is slightly warmer than usual)How big are the waves at Marengo today?
The current surf forecast for Marengo at 4AM is: 0.9m 13s primary swell from a Southwest direction and 0.6m 6s secondary swell from a Southwest direction (forecast issued at 10:00pm December 13). An open ocean swell of 0.3m 2s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (AEDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Dec) | 4.5ft (1.3m) | 8s |
| Afternoon (14 Dec) | 11ft (3.5m) | 12s |
| Evening (14 Dec) | 15ft (4.5m) | 14s |
Table - waves today at Marengo. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sat 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||||||||||
| 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) (?) | 14 | 13 | 13 | 13 | 8 | 9 | 11 | 13 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 447 | 386 | 330 | 277 | 155 | 542 | 2901 | 5398 | 6654 | 11904 | 11295 | 10112 | 8762 | 4823 | 4398 | 4185 | 4906 | 1679 | 1652 | 1407 | 1121 | 1000 | 857 | 679 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | off | off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross |
High Tide / height (m) | 7:13PM 1.82 | 8:51AM 1.63 | 8:01PM 1.65 | 10:15AM 1.70 | 8:59PM 1.52 | 11:25AM 1.82 | ||||||||||||||||||
Low Tide / height (m) | 2:02AM 0.58 | 2:15PM 1.09 | 3:01AM 0.57 | 4:06PM 1.19 | 4:02AM 0.55 | |||||||||||||||||||
Sat 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 5:54 | - | - | - | - | - | - | - | 5:54 | - | - | - | - | - | - | - | 5:54 | - | - | - |
| Sunset | 8:44 | - | - | - | - | - | - | - | 8:45 | - | - | - | - | - | - | - | 8:45 | - | - | - | - | - | - | - |
 |  | | | |  | | | | | |  | | | | | | | | | | |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 15 | 13 | 14 | 13 | 15 | 14 | 13 | 14 | 13 | 12 | 12 | 12 | 12 | 13 | 14 | 14 | 13 | 12 | 12 | 12 | 12 | 14 | 14 | 14 |
| Feels °C (?) | 13 | 10 | 10 | 8 | 9 | 7 | 5 | 6 | 6 | 5 | 5 | 6 | 6 | 6 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 12 | 11 | 12 |
- 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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