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 pm Tuesday 16 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
22.3° C
(Which is 2.0°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 11PM is: 0.7m 15s primary swell from a West direction and 0.9m 11s secondary swell from a West-southwest direction, 0.5m 4s secondary swell from a Southwest direction (forecast issued at 07:00pm December 16). The wind direction is predicted to be onshore.
| Time (AWST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | - | - |
| Afternoon (16 Dec) | 3.5ft (1.0m) | 15s |
| Evening (16 Dec) | 2.5ft (0.7m) | 15s |
Table - waves today at Secret Harbour. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| 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 | 2 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 15 | 15 | 15 | 15 | 15 | 14 | 9 | 12 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 12 | 6 | 8 | 8 | 9 | 11 | 11 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 229 | 233 | 227 | 212 | 355 | 417 | 644 | 1846 | 1684 | 1829 | 1522 | 832 | 501 | 490 | 496 | 723 | 200 | 403 | 306 | 210 | 228 | 168 | 119 | 194 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross | cross | cross- off | cross- on | on | cross- on | cross- off | cross- off | cross- off | cross- off | cross- off | on | cross- on |
High Tide / height (m) | 6:58PM 0.81 | 7:28PM 0.84 | 7:59PM 0.87 | |||||||||||||||||||||
Low Tide / height (m) | 5:01AM 0.20 | 5:07AM 0.16 | 5:27AM 0.13 | |||||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 5:03 | - | - | - | - | - | - | - | 5:03 | - | - | - | - | - | - | - | 5:05 | - | - |
| Sunset | 7:20 | - | - | - | - | - | - | - | 7:20 | - | - | - | - | - | - | - | 7:21 | - | - | - | - | - | - | - |
 |  | |  | |  | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 21 | 20 | 20 | 20 | 19 | 18 | 18 | 18 | 19 | 20 | 17 | 15 | 15 | 18 | 25 | 24 | 23 | 27 | 20 | 17 | 17 | 20 | 24 | 22 |
| Feels °C (?) | 20 | 18 | 20 | 18 | 14 | 13 | 13 | 12 | 14 | 13 | 11 | 11 | 11 | 14 | 22 | 18 | 18 | 24 | 14 | 11 | 13 | 17 | 22 | 17 |
- 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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