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:
Southside surfForecast / WA – Margaret River / Australia
48hr Weather and Surf, issued 7 am Saturday 13 Dec 2025 AWSTForecast update in hr min s Forecast update imminent
Southside surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Southside sea temperature is
20.1° C
(Which is 1.0°C warmer than normal for this time of year)How big are the waves at Southside today?
The current surf forecast for Southside at 11AM is: 1.6m 12s primary swell from a Southwest direction and 0.1m 16s secondary swell from a Southwest direction (forecast issued at 07:00am December 13). An open ocean swell of 0.8m 4s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (AWST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 5ft (1.6m) | 12s |
| Afternoon (13 Dec) | 5ft (1.5m) | 11s |
| Evening (13 Dec) | 4.5ft (1.4m) | 11s |
Table - waves today at Southside. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | Tue 16 | |||||||||||||||||||||
| 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 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 16 | 16 | 16 | 15 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 660 | 660 | 648 | 553 | 534 | 431 | 382 | 431 | 479 | 311 | 444 | 623 | 649 | 773 | 683 | 672 | 546 | 537 | 453 | 344 | 330 | 441 | 499 | 468 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross | cross- off | cross- off | cross- off | cross- off | off | off | off | glass | cross- on | cross- off | cross- off | cross- off | cross | cross- off | cross- off | cross | cross | cross- on | cross | cross- on | cross- on |
High Tide / height (m) | 7:26PM 0.55 | 7:08PM 0.61 | 7:16PM 0.66 | |||||||||||||||||||||
Low Tide / height (m) | 6:42AM 0.32 | 4:28AM 0.25 | 4:37AM 0.19 | |||||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tue 16 | |||||||||||||||||||||
| Sunrise | - | 5:01 | - | - | - | - | - | - | - | 5:01 | - | - | - | - | - | - | - | 5:01 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 7:24 | - | - | - | - | - | - | - | 7:25 | - | - | - | - | - | - | - | 7:25 | - | - | - |
 |  | | | | | | | | | |  | |  | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 13 | 18 | 25 | 24 | 21 | 18 | 19 | 19 | 18 | 24 | 32 | 26 | 30 | 27 | 26 | 26 | 24 | 27 | 27 | 26 | 21 | 20 | 20 | 19 |
| Feels °C (?) | 10 | 15 | 21 | 18 | 16 | 13 | 14 | 14 | 13 | 21 | 31 | 24 | 27 | 26 | 24 | 24 | 24 | 25 | 25 | 25 | 21 | 22 | 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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