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 4 pm Friday 12 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
15.8° C
(Which is normal for this time of year)How big are the waves at Marengo today?
The current surf forecast for Marengo at 12AM is: 0.8m 13s primary swell from a Southwest direction and 0.6m 5s secondary swell from a East-southeast direction (forecast issued at 04:00pm December 12). The wind direction is predicted to be cross-shore.
| Time (AEDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 2.5ft (0.8m) | 12s |
| Afternoon (13 Dec) | 2.5ft (0.7m) | 15s |
| Evening (13 Dec) | 3.5ft (1.1m) | 14s |
Table - waves today at Marengo. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| 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 | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 15 | 14 | 14 | 13 | 13 | 13 | 7 | 9 | 11 | 13 | 14 | 14 | 14 | 14 | 14 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 277 | 241 | 199 | 196 | 184 | 178 | 175 | 178 | 224 | 590 | 447 | 386 | 431 | 277 | 223 | 958 | 2274 | 4545 | 6039 | 11574 | 10981 | 9966 | 5317 | 5197 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | cross- on | cross- on | off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off | off | off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 6:30PM 2.00 | 7:24AM 1.62 | 7:13PM 1.82 | 8:51AM 1.63 | 8:01PM 1.65 | 10:15AM 1.70 | ||||||||||||||||||
Low Tide / height (m) | 11:59AM 0.65 | 1:07AM 0.60 | 12:56PM 0.88 | 2:02AM 0.58 | 2:15PM 1.09 | 3:01AM 0.57 | ||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 5:52 | - | - | - | - | - | - | - | 5:54 | - | - | - | - | - | - | - | 5:54 | - |
| Sunset | - | - | 8:43 | - | - | - | - | - | - | - | 8:44 | - | - | - | - | - | - | - | 8:45 | - | - | - | - | - |
 |  |  |  |  | | | | | | |  | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 24 | 20 | 19 | 18 | 19 | 15 | 16 | 18 | 18 | 17 | 15 | 12 | 13 | 13 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 13 |
| Feels °C (?) | 23 | 19 | 18 | 17 | 18 | 15 | 15 | 16 | 15 | 13 | 12 | 9 | 9 | 8 | 8 | 6 | 5 | 5 | 5 | 5 | 5 | 6 | 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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