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 Thursday 11 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
14.3° 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 7PM is: 0.4m 7s primary swell from a South-southeast direction and 0.2m 14s secondary swell from a South direction, 0.3m 6s secondary swell from a Northeast direction (forecast issued at 04:00pm December 11). The wind direction is predicted to be cross-shore.
| Time (AEDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Dec) | - | - |
| Afternoon (11 Dec) | 1.5ft (0.4m) | 7s |
| Evening (11 Dec) | 1.5ft (0.4m) | 7s |
Table - waves today at Marion Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||||||||
| 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) (?) | 7 | 7 | 7 | 7 | 14 | 14 | 14 | 5 | 5 | 6 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 16 | 17 | 17 | 16 | 16 | 16 | 15 | 25 | 107 | 240 | 347 | 336 | 456 | 164 | 151 | 171 | 153 | 132 | 132 | 129 | 122 | 103 | 136 | 119 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross | cross | cross- off | cross- off | cross- off | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross | cross- on | on | cross- on | cross- on | cross- off | off | off | off | off |
High Tide / height (m) | 1:59PM 0.94 | 3:40AM 0.88 | 2:57PM 0.85 | 4:19AM 0.91 | 3:58PM 0.76 | 4:54AM 0.95 | ||||||||||||||||||
Low Tide / height (m) | 8:54PM 0.20 | 9:22AM 0.50 | 9:31PM 0.28 | 10:31AM 0.47 | 10:05PM 0.34 | |||||||||||||||||||
Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 5:22 | - | - | - | - | - | - | - | 5:22 | - | - | - | - | - | - | - | 5:22 | - |
| Sunset | - | - | 8:38 | - | - | - | - | - | - | - | 8:39 | - | - | - | - | - | - | - | 8:39 | - | - | - | - | - |
 |  |  |  | | | | | | | |  | | | | | | | |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 14 | 13 | 12 | 11 | 10 | 10 | 13 | 17 | 19 | 19 | 18 | 18 | 16 | 14 | 16 | 17 | 17 | 16 | 14 | 12 | 15 | 14 | 13 | 12 |
| Feels °C (?) | 10 | 10 | 9 | 7 | 7 | 7 | 10 | 13 | 13 | 13 | 13 | 15 | 14 | 13 | 15 | 14 | 14 | 14 | 12 | 10 | 11 | 8 | 6 | 4 |
- 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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