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:
Back Beach surfForecast / WA – Perth City / Australia
48hr Weather and Surf, issued 1 pm Sunday 14 Dec 2025 AWSTForecast update in hr min s Forecast update imminent
Back Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Back Beach sea temperature is
22.2° C
(Which is 1.6°C warmer than normal for this time of year)How big are the waves at Back Beach today?
The current surf forecast for Back Beach at 6PM is: 0.8m 13s primary swell from a West-southwest direction and 0.7m 11s secondary swell from a Southwest direction (forecast issued at 01:00pm December 14). The wind direction is predicted to be offshore and the swell rating is 2.
| Time (AWST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Dec) | 4.5ft (1.3m) | 11s |
| Afternoon (14 Dec) | 4.5ft (1.3m) | 11s |
| Evening (14 Dec) | 2.5ft (0.7m) | 13s |
Table - waves today at Back Beach. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | |||||||||||||||||||||
| 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) (?) | 11 | 11 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 382 | 389 | 195 | 151 | 346 | 341 | 390 | 384 | 325 | 319 | 285 | 298 | 295 | 402 | 387 | 434 | 417 | 752 | 773 | 525 | 525 | 422 | 485 | 845 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | on | cross- off | cross- off | off | off | cross- off | cross- off | cross- on | cross- on | glass | on | cross- on | cross- on | cross- on | cross- on | cross- on | on | cross- on | cross- on | cross- on | cross- on | on | on |
High Tide / height (m) | 6:20PM 0.55 | 6:40PM 0.59 | 7:04PM 0.63 | |||||||||||||||||||||
Low Tide / height (m) | 4:19AM 0.17 | 4:29AM 0.12 | 4:47AM 0.09 | |||||||||||||||||||||
Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 5:09 | - | - | - | - | - | - | - | 5:09 | - | - | - | - | - | - | - | 5:09 |
| Sunset | - | - | 7:16 | - | - | - | - | - | - | - | 7:16 | - | - | - | - | - | - | - | 7:17 | - | - | - | - | - |
 |  |  |  | | | | | | | | | | | | | | | | |  | | | | |
Rain (mm) | - | - | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 35 | 29 | 28 | 27 | 26 | 25 | 26 | 28 | 25 | 24 | 25 | 23 | 22 | 21 | 21 | 22 | 24 | 24 | 23 | 21 | 20 | 20 | 20 | 21 |
| Feels °C (?) | 33 | 28 | 26 | 27 | 22 | 24 | 26 | 27 | 24 | 23 | 27 | 23 | 23 | 22 | 22 | 21 | 24 | 22 | 22 | 20 | 19 | 20 | 21 | 20 |
- 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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