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 4 pm Friday 12 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
14.4° 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 8PM is: 2.1m 7s primary swell from a Northeast direction and 0.4m 13s secondary swell from a East-northeast direction, 0.1m 13s secondary swell from a South 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 (12 Dec) | - | - |
| Afternoon (12 Dec) | 5ft (1.5m) | 5s |
| Evening (12 Dec) | 6ft (1.9m) | 7s |
Table - waves today at Marion Bay. (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) (?) | 5 | 6 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 14 | 14 | 15 | 15 | 15 | 16 | 15 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 92 | 258 | 374 | 271 | 378 | 152 | 147 | 159 | 158 | 162 | 162 | 158 | 132 | 151 | 167 | 129 | 98 | 106 | 153 | 279 | 459 | 688 | 942 | 894 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross- off | cross- off | cross- off | glass | cross- on | on | cross- on | cross | cross- off | cross- off | off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 2:57PM 0.85 | 4:19AM 0.91 | 3:58PM 0.76 | 4:54AM 0.95 | 5:02PM 0.70 | 5:26AM 0.98 | ||||||||||||||||||
Low Tide / height (m) | 9:31PM 0.28 | 10:31AM 0.47 | 10:05PM 0.34 | 11:33AM 0.42 | 10:37PM 0.40 | |||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 5:22 | - | - | - | - | - | - | - | 5:22 | - | - | - | - | - | - | - | 5:24 | - |
| Sunset | - | - | 8:39 | - | - | - | - | - | - | - | 8:39 | - | - | - | - | - | - | - | 8:40 | - | - | - | - | - |
 |  | |  |  | | | | | | | | | |  | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | - | - | - | - | - | - | - | - |
| Temp. °C | 19 | 19 | 18 | 18 | 16 | 14 | 15 | 18 | 17 | 16 | 14 | 13 | 15 | 15 | 12 | 11 | 13 | 12 | 10 | 9 | 9 | 8 | 9 | 11 |
| Feels °C (?) | 13 | 13 | 12 | 14 | 14 | 13 | 14 | 15 | 14 | 13 | 12 | 11 | 11 | 10 | 5 | 4 | 4 | 2 | 2 | 0 | 0 | 0 | 0 | 2 |
- 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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