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:
Bruny Island - Mabel Bay surfForecast / TAS – East Coast / Australia
48hr Weather and Surf, issued 4 pm Monday 15 Dec 2025 AEDTForecast update in hr min s Forecast update imminent
Bruny Island - Mabel Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Bruny Island - Mabel Bay sea temperature is
14.1° C
(Which is normal for this time of year)How big are the waves at Bruny Island - Mabel Bay today?
The current surf forecast for Bruny Island - Mabel Bay at 7PM is: 5.0m 13s primary swell from a Southwest direction (forecast issued at 04:00pm December 15). The wind direction is predicted to be cross-offshore.
| Time (AEDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | - | - |
| Afternoon (15 Dec) | 16ft (5.0m) | 14s |
| Evening (15 Dec) | 15ft (4.5m) | 13s |
Table - waves today at Bruny Island - Mabel Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| 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) (?) | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 10191 | 8422 | 7393 | 5635 | 4401 | 3723 | 3462 | 4784 | 1974 | 1724 | 1975 | 962 | 741 | 624 | 554 | 457 | 441 | 1501 | 595 | 564 | 574 | 574 | 471 | 414 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross- off | cross | cross- off | glass | off | glass | cross- on | on | cross | cross- on | on | cross- on | glass | cross- off | cross- off |
High Tide / height (m) | 4:01AM 0.67 | 4:10AM 0.70 | 4:28AM 0.73 | |||||||||||||||||||||
Low Tide / height (m) | 12:50PM 0.23 | 1:15PM 0.19 | ||||||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 5:24 | - | - | - | - | - | - | - | 5:24 | - | - | - | - | - | - | - | 5:24 | - |
| Sunset | - | - | 8:46 | - | - | - | - | - | - | - | 8:47 | - | - | - | - | - | - | - | 8:49 | - | - | - | - | - |
 | | |  | | |  | |  | | |  | | | | | | | |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 14 | 18 | 18 | 18 | 14 | 12 | 12 | 13 | 17 | 17 | 20 | 16 | 15 | 15 | 14 | 15 | 18 |
| Feels °C (?) | -1 | 0 | 1 | 3 | 6 | 6 | 7 | 10 | 13 | 13 | 14 | 12 | 10 | 9 | 11 | 14 | 14 | 17 | 13 | 14 | 14 | 13 | 13 | 16 |
- 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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