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:
The Guillotine surfForecast / WA – Margaret River / Australia
48hr Weather and Surf, issued 1 am Saturday 13 Dec 2025 AWSTForecast update in hr min s Forecast update imminent
The Guillotine surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's The Guillotine sea temperature is
20.3° C
(Which is 1.1°C warmer than normal for this time of year)How big are the waves at The Guillotine today?
The current surf forecast for The Guillotine at 5AM is: 1.6m 12s primary swell from a Southwest direction (forecast issued at 01:00am December 13). An open ocean swell of 0.8m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (AWST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 5ft (1.6m) | 12s |
| Afternoon (13 Dec) | 4.5ft (1.4m) | 11s |
| Evening (13 Dec) | 4.5ft (1.3m) | 11s |
Table - waves today at The Guillotine. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | ||||||||||||||||||||||
| 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) (?) | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 671 | 660 | 648 | 648 | 739 | 512 | 493 | 396 | 396 | 396 | 431 | 389 | 338 | 529 | 710 | 624 | 614 | 614 | 603 | 537 | 418 | 308 | 330 | 397 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- on | cross | cross | cross- off | cross- off | cross- off | cross- off | off | cross- off | on | cross | cross- off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- on | cross |
High Tide / height (m) | 8:28PM 0.57 | 7:40PM 0.59 | 7:17PM 0.63 | 7:15PM 0.69 | ||||||||||||||||||||
Low Tide / height (m) | 5:55AM 0.35 | 4:50AM 0.28 | 4:46AM 0.22 | |||||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | ||||||||||||||||||||||
| Sunrise | - | - | - | 5:01 | - | - | - | - | - | - | - | 5:01 | - | - | - | - | - | - | - | 5:03 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 7:23 | - | - | - | - | - | - | - | 7:24 | - | - | - | - | - | - | - | 7:25 | - |
 | | |  | | | | | | | |  | | | |  | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 17 | 14 | 13 | 19 | 25 | 27 | 24 | 20 | 21 | 19 | 19 | 24 | 32 | 29 | 30 | 27 | 26 | 27 | 25 | 26 | 26 | 26 | 22 | 21 |
| Feels °C (?) | 13 | 10 | 9 | 15 | 21 | 21 | 18 | 15 | 15 | 13 | 13 | 19 | 30 | 28 | 27 | 24 | 23 | 24 | 24 | 24 | 24 | 25 | 23 | 22 |
- 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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