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:
Y-Steps surfForecast / SA – Adelaide / Australia
48hr Weather and Surf, issued 3 am Wednesday 17 Dec 2025 ACDTForecast update in hr min s Forecast update imminent
Y-Steps surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Y-Steps sea temperature is
19.2° C
(Which is 1.8°C warmer than normal for this time of year)How big are the waves at Y-Steps today?
The current surf forecast for Y-Steps at 6AM is: 0.1m 7s primary swell from a West direction (forecast issued at 03:30am December 17). The wind direction is predicted to be offshore.
| Time (ACDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | 0.5ft (0.1m) | 7s |
| Afternoon (17 Dec) | 0.5ft (0.1m) | 11s |
| Evening (17 Dec) | 0.5ft (0.1m) | 10s |
Table - waves today at Y-Steps. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 17 | Thursday 18 | Friday 19 | ||||||||||||||||||||||
| 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    | |||||||||||||||||||||
| Wave Height (m) & direction (?) | — | — | — | — | ||||||||||||||||||||
| Period(s) (?) | 7 | 7 | 6 | 7 | 7 | 11 | 10 | 10 | - | - | - | 2 | 3 | 3 | 2 | 3 | 3 | 3 | - | 3 | 3 | 3 | 3 | 5 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 1 | 3 | 7 | 6 | 23 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | off | off | cross | cross- on | on | cross- on | cross- off | cross- off | off | cross- off | cross- off | cross | cross- on | on | cross- off | off | glass | cross- on | on | on | cross- on | cross- on | cross |
High Tide / height (m) | 3:33AM 1.82 | 4:38PM 1.17 | 4:15AM 1.96 | 5:20PM 1.22 | 4:50AM 2.04 | 5:54PM 1.25 | ||||||||||||||||||
Low Tide / height (m) | 10:51AM 0.58 | 9:25PM 0.80 | 11:26AM 0.44 | 10:09PM 0.76 | 11:57AM 0.33 | |||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | ||||||||||||||||||||||
| Sunrise | - | - | 5:56 | - | - | - | - | - | - | - | 5:56 | - | - | - | - | - | - | - | 5:56 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 8:27 | - | - | - | - | - | - | - | 8:27 | - | - | - | - | - | - | - | 8:28 | - |
 | |  | | | | | | | | | | | | | |  | |  |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 20 | 21 | 23 | 26 | 27 | 29 | 30 | 26 | 25 | 25 | 26 | 30 | 33 | 33 | 30 | 29 | 27 | 27 | 24 | 24 | 23 | 24 | 21 | 16 |
| Feels °C (?) | 17 | 18 | 20 | 23 | 23 | 25 | 26 | 22 | 22 | 21 | 22 | 26 | 30 | 32 | 26 | 26 | 24 | 25 | 23 | 21 | 21 | 20 | 18 | 14 |
- 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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