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:
Secret Harbour surfForecast / WA – Perth City / Australia
48hr Weather and Surf, issued 7 am Friday 12 Dec 2025 AWSTForecast update in hr min s Forecast update imminent
Secret Harbour surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Secret Harbour sea temperature is
21.3° C
(Which is 1.3°C warmer than normal for this time of year)How big are the waves at Secret Harbour today?
The current surf forecast for Secret Harbour at 1PM is: 1.8m 12s primary swell from a Southwest direction and 1.2m 12s secondary swell from a West-southwest direction (forecast issued at 07:00am December 12). The wind direction is predicted to be cross-onshore.
| Time (AWST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | 4ft (1.2m) | 12s |
| Afternoon (12 Dec) | 6ft (1.8m) | 12s |
| Evening (12 Dec) | 6.5ft (2.0m) | 8s |
Table - waves today at Secret Harbour. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 12 | Saturday 13 | Sunday 14 | Mon 15 | |||||||||||||||||||||
| 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 | 11 PM | 2 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 12 | 12 | 12 | 8 | 8 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 333 | 393 | 400 | 899 | 1271 | 531 | 324 | 666 | 449 | 393 | 359 | 306 | 243 | 217 | 471 | 341 | 247 | 186 | 170 | 170 | 176 | 183 | 189 | 196 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- off | cross | cross- on | cross- on | cross- off | cross- off | cross- off | cross- off | off | cross- on | cross- on | cross- on | cross- off | cross- off | off | off | off | cross- off | cross- off | cross- off | off | off | cross- off |
High Tide / height (m) | 8:10PM 0.69 | 6:44PM 0.71 | 6:18PM 0.74 | |||||||||||||||||||||
Low Tide / height (m) | 8:48AM 0.46 | 7:12AM 0.44 | 6:37AM 0.38 | |||||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Mon 15 | |||||||||||||||||||||
| Sunrise | - | 5:03 | - | - | - | - | - | - | - | 5:03 | - | - | - | - | - | - | - | 5:03 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 7:16 | - | - | - | - | - | - | - | 7:17 | - | - | - | - | - | - | - | 7:17 | - | - | - |
 |  | | | | | | | | | | | | | | | |  | | |  |  | |  | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | - | - |
| Temp. °C | 18 | 21 | 28 | 27 | 26 | 30 | 23 | 20 | 18 | 22 | 29 | 28 | 28 | 33 | 27 | 23 | 22 | 27 | 34 | 36 | 23 | 26 | 29 | 28 |
| Feels °C (?) | 14 | 16 | 24 | 22 | 20 | 25 | 16 | 14 | 14 | 18 | 27 | 24 | 25 | 29 | 20 | 16 | 16 | 21 | 30 | 32 | 17 | 20 | 24 | 24 |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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