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 1 pm Monday 15 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
21.9° C
(Which is 1.6°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 5PM is: 0.9m 11s primary swell from a West-southwest direction and 0.5m 16s secondary swell from a West direction (forecast issued at 01:00pm December 15). The wind direction is predicted to be cross-shore.
| Time (AWST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | 3ft (0.9m) | 12s |
| Afternoon (15 Dec) | 3ft (0.9m) | 11s |
| Evening (15 Dec) | 3ft (0.9m) | 11s |
Table - waves today at Secret Harbour. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| 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 | 5 AM | 8 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 11 | 11 | 11 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 10 | 15 | 14 | 14 | 13 | 12 | 12 | 11 | 11 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 211 | 200 | 186 | 183 | 186 | 179 | 224 | 215 | 456 | 456 | 229 | 233 | 227 | 270 | 355 | 610 | 2517 | 2539 | 1967 | 1794 | 1656 | 1199 | 794 | 648 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | on | cross | on | glass | glass | cross | on | cross- on | on | on | cross- on | cross- on | on | on | on | on | on | cross- on | cross- on | cross | cross | cross | cross- off |
High Tide / height (m) | 6:32PM 0.78 | 6:58PM 0.81 | 7:28PM 0.84 | |||||||||||||||||||||
Low Tide / height (m) | 5:24AM 0.26 | 5:01AM 0.20 | 5:07AM 0.16 | |||||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 5:03 | - | - | - | - | - | - | - | 5:03 | - | - | - | - | - | - | - | 5:03 |
| Sunset | - | - | 7:19 | - | - | - | - | - | - | - | 7:20 | - | - | - | - | - | - | - | 7:20 | - | - | - | - | - |
 | | |  | | | | | | | | | |  | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 27 | 25 | 24 | 23 | 22 | 22 | 21 | 23 | 23 | 22 | 21 | 20 | 20 | 20 | 19 | 18 | 19 | 19 | 19 | 19 | 18 | 16 | 16 | 20 |
| Feels °C (?) | 27 | 25 | 26 | 24 | 24 | 24 | 22 | 24 | 23 | 21 | 19 | 18 | 19 | 19 | 16 | 15 | 17 | 15 | 15 | 15 | 13 | 13 | 13 | 16 |
- 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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