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:
Marion Bay surfForecast / TAS – East Coast / Australia
48hr Weather and Surf, issued 10 am Sunday 14 Dec 2025 AEDTForecast update in hr min s Forecast update imminent
Marion Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Marion Bay sea temperature is
14.5° C
(Which is normal for this time of year)How big are the waves at Marion Bay today?
The current surf forecast for Marion Bay at 1PM is: 0.9m 8s primary swell from a Northeast direction and 0.3m 14s secondary swell from a South direction (forecast issued at 10:00am December 14). An open ocean swell of 0.8m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (AEDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Dec) | 3.5ft (1.1m) | 8s |
| Afternoon (14 Dec) | 2.5ft (0.8m) | 8s |
| Evening (14 Dec) | 2.5ft (0.8m) | 15s |
Table - waves today at Marion Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sunday 14 | Monday 15 | Tuesday 16 | Wed 17 | |||||||||||||||||||||
| 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 | 8 PM | 11 PM | 2 AM | 5 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 8 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 222 | 153 | 100 | 107 | 212 | 362 | 566 | 653 | 743 | 836 | 813 | 780 | 646 | 531 | 437 | 395 | 304 | 240 | 220 | 202 | 205 | 158 | 110 | 82 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | 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 | off | cross- off | cross- off | cross- off | cross- off | cross | cross- on | cross | cross- off | cross- off |
High Tide / height (m) | 5:02PM 0.70 | 5:26AM 0.98 | 6:07PM 0.67 | 5:59AM 1.00 | 7:10PM 0.66 | |||||||||||||||||||
Low Tide / height (m) | 11:33AM 0.42 | 10:37PM 0.40 | 12:26PM 0.36 | 11:11PM 0.45 | 1:12PM 0.31 | 11:48PM 0.49 | ||||||||||||||||||
Sunday 14 | Monday 15 | Tuesday 16 | Wed 17 | |||||||||||||||||||||
| Sunrise | 5:22 | - | - | - | - | - | - | - | 5:24 | - | - | - | - | - | - | - | 5:24 | - | - | - | - | - | - | - |
| Sunset | - | - | - | - | 8:40 | - | - | - | - | - | - | - | 8:42 | - | - | - | - | - | - | - | 8:43 | - | - | - |
 |  | | | |  |  | |  | | | | | |  | |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 13 | 13 | 13 | 12 | 10 | 9 | 8 | 8 | 8 | 10 | 13 | 14 | 12 | 11 | 12 | 13 | 13 | 16 | 18 | 19 | 15 | 12 | 12 | 11 |
| Feels °C (?) | 6 | 5 | 4 | 3 | 1 | 0 | -1 | 0 | 0 | 2 | 4 | 5 | 4 | 5 | 8 | 9 | 9 | 11 | 14 | 16 | 13 | 10 | 10 | 9 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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