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 am Sunday 14 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
21.8° 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 8AM is: 0.9m 11s primary swell from a West-southwest direction and 0.1m 21s secondary swell from a West direction (forecast issued at 01:00am December 14). An open ocean swell of 0.5m 3s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 2.
| Time (AWST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Dec) | 3ft (0.9m) | 11s |
| Afternoon (14 Dec) | 3ft (0.9m) | 11s |
| Evening (14 Dec) | 3.5ft (1.0m) | 11s |
Table - waves today at Secret Harbour. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sunday 14 | Monday 15 | Tuesday 16 | ||||||||||||||||||||||
| 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) (?) | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 226 | 347 | 247 | 186 | 170 | 190 | 193 | 243 | 256 | 260 | 215 | 215 | 215 | 204 | 186 | 133 | 186 | 179 | 224 | 215 | 456 | 456 | 229 | 233 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | off | off | off | cross- off | off | off | off | cross- off | cross- off | cross- off | cross- on | cross- on | cross- off | cross- on | glass | glass | cross- on | cross- on | on | on | cross- on | cross- on |
High Tide / height (m) | 6:18PM 0.74 | 6:32PM 0.78 | 6:58PM 0.81 | |||||||||||||||||||||
Low Tide / height (m) | 6:37AM 0.38 | 6:08AM 0.32 | 5:24AM 0.26 | |||||||||||||||||||||
Sunday 14 | Monday 15 | Tuesday 16 | ||||||||||||||||||||||
| Sunrise | - | - | - | 5:03 | - | - | - | - | - | - | - | 5:03 | - | - | - | - | - | - | - | 5:03 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 7:17 | - | - | - | - | - | - | - | 7:19 | - | - | - | - | - | - | - | 7:20 | - |
 | | |  |  |  | | | |  | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | 1 | 4 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 28 | 24 | 23 | 27 | 33 | 33 | 23 | 26 | 26 | 26 | 26 | 28 | 27 | 24 | 24 | 22 | 21 | 20 | 20 | 21 | 21 | 22 | 21 | 20 |
| Feels °C (?) | 21 | 18 | 17 | 22 | 29 | 31 | 16 | 21 | 20 | 23 | 25 | 26 | 25 | 24 | 26 | 23 | 23 | 22 | 22 | 22 | 21 | 22 | 19 | 19 |
- 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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