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 Thursday 11 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
20.3° C
(Which is 1.3°C warmer than normal for this time of year)How big are the waves at Southside today?
The current surf forecast for Southside at 1PM is: 1.8m 12s primary swell from a Southwest direction (forecast issued at 07:00am December 11). An open ocean swell of 1.3m 5s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (AWST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Dec) | 6ft (1.8m) | 12s |
| Afternoon (11 Dec) | 6ft (1.8m) | 12s |
| Evening (11 Dec) | 6ft (1.8m) | 12s |
Table - waves today at Southside. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 11 | Friday 12 | Saturday 13 | Sun 14 | |||||||||||||||||||||
| 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) (?) | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1452 | 1009 | 976 | 910 | 910 | 910 | 910 | 1010 | 1077 | 1095 | 993 | 977 | 822 | 808 | 671 | 660 | 660 | 594 | 583 | 553 | 439 | 382 | 382 | 431 |
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 | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off |
High Tide / height (m) | 9:53PM 0.54 | 8:55PM 0.52 | 7:26PM 0.55 | |||||||||||||||||||||
Low Tide / height (m) | 12:36PM 0.23 | 12:35PM 0.31 | 6:42AM 0.32 | |||||||||||||||||||||
Thursday 11 | Friday 12 | Saturday 13 | Sun 14 | |||||||||||||||||||||
| Sunrise | - | 5:01 | - | - | - | - | - | - | - | 5:01 | - | - | - | - | - | - | - | 5:01 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 7:23 | - | - | - | - | - | - | - | 7:23 | - | - | - | - | - | - | - | 7:24 | - | - | - |
 |  | |  | |  | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 15 | 19 | 22 | 21 | 19 | 17 | 16 | 15 | 14 | 18 | 22 | 22 | 20 | 17 | 16 | 14 | 13 | 18 | 26 | 25 | 22 | 19 | 21 | 20 |
| Feels °C (?) | 13 | 16 | 18 | 17 | 14 | 12 | 11 | 11 | 10 | 13 | 16 | 16 | 14 | 10 | 11 | 10 | 10 | 14 | 21 | 19 | 17 | 14 | 16 | 15 |
- 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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