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:
Stark Bay surfForecast / WA – Rottnest Island / Australia
48hr Weather and Surf, issued 1 am Friday 12 Dec 2025 AWSTForecast update in hr min s Forecast update imminent
Stark Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Stark Bay sea temperature is
21.0° C
(Which is slightly warmer than usual)How big are the waves at Stark Bay today?
The current surf forecast for Stark Bay at 3AM is: 1.7m 8s primary swell from a Southwest direction and 1.0m 12s secondary swell from a West-southwest direction (forecast issued at 01:00am December 12). The wind direction is predicted to be cross-offshore.
| Time (AWST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | 3.5ft (1.0m) | 12s |
| Afternoon (12 Dec) | 6ft (1.9m) | 12s |
| Evening (12 Dec) | 7ft (2.2m) | 7s |
Table - waves today at Stark Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 12 | Saturday 13 | Sunday 14 | ||||||||||||||||||||||
| 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 | 2 PM | 5 PM | 8 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 12 | 12 | 12 | 12 | 12 | 7 | 8 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 502 | 373 | 359 | 304 | 365 | 913 | 1276 | 521 | 602 | 781 | 488 | 386 | 380 | 247 | 243 | 234 | 186 | 423 | 273 | 186 | 170 | 135 | 135 | 176 |
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 | cross | cross- off | off | off | off | off | cross- off | cross | cross | cross- off | off | off | cross- off | cross- off | off | off | cross- off | cross- off |
High Tide / height (m) | 9:24PM 0.53 | 8:12PM 0.48 | 6:28PM 0.52 | 6:13PM 0.61 | ||||||||||||||||||||
Low Tide / height (m) | 9:15AM 0.28 | 7:01AM 0.25 | 6:28AM 0.22 | |||||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | ||||||||||||||||||||||
| Sunrise | - | - | - | 5:05 | - | - | - | - | - | - | - | 5:05 | - | - | - | - | - | - | - | 5:05 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 7:16 | - | - | - | - | - | - | - | 7:17 | - | - | - | - | - | - | - | 7:19 | - |
 | | |  | | | | | | | | | | | | | | | | |  | |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 4 | - |
| Temp. °C | 23 | 20 | 18 | 19 | 23 | 23 | 22 | 24 | 25 | 21 | 20 | 20 | 26 | 24 | 23 | 27 | 29 | 25 | 24 | 25 | 32 | 34 | 25 | 26 |
| Feels °C (?) | 18 | 15 | 11 | 12 | 17 | 16 | 15 | 17 | 17 | 15 | 15 | 15 | 23 | 18 | 18 | 22 | 21 | 19 | 18 | 19 | 28 | 30 | 17 | 22 |
- 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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