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:
Horseshoe Bay 1 surfForecast / SA – East Coast / Australia
48hr Weather and Surf, issued 3 am Wednesday 17 Dec 2025 ACDTForecast update in hr min s Forecast update imminent
Horseshoe Bay 1 surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Horseshoe Bay 1 sea temperature is
18.2° C
(Which is 1.1°C warmer than normal for this time of year)How big are the waves at Horseshoe Bay 1 today?
The current surf forecast for Horseshoe Bay 1 at 8AM is: 1.1m 10s primary swell from a South direction and 0.6m 10s secondary swell from a Southwest direction (forecast issued at 03:30am December 17). The wind direction is predicted to be cross-offshore.
| Time (ACDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | 3.5ft (1.1m) | 10s |
| Afternoon (17 Dec) | 3ft (0.9m) | 10s |
| Evening (17 Dec) | 2.5ft (0.8m) | 9s |
Table - waves today at Horseshoe Bay 1. (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) (?) | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 14 | 14 | 13 | 12 | 14 | 14 | 13 | 13 | 12 | 13 | 13 | 13 | 13 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 477 | 346 | 244 | 192 | 190 | 151 | 139 | 106 | 81 | 77 | 123 | 151 | 99 | 211 | 161 | 229 | 206 | 193 | 269 | 269 | 351 | 546 | 582 | 218 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- off | cross- off | cross- off | on | on | on | glass | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross- on | glass | cross- off | cross | cross- on | cross- on | cross- on | cross- on | cross- on | on |
High Tide / height (m) | 12:40AM 1.11 | 12:11PM 0.51 | 1:04AM 1.19 | 12:43PM 0.50 | 1:28AM 1.24 | 1:11PM 0.48 | ||||||||||||||||||
Low Tide / height (m) | 10:11AM 0.49 | 4:29PM 0.34 | 10:08AM 0.46 | 5:02PM 0.30 | 10:11AM 0.43 | 5:34PM 0.25 | ||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | ||||||||||||||||||||||
| Sunrise | - | - | 5:54 | - | - | - | - | - | - | - | 5:54 | - | - | - | - | - | - | - | 5:54 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 8:27 | - | - | - | - | - | - | - | 8:28 | - | - | - | - | - | - | - | 8:28 | - |
 | |  | | | | | | | | | | | | | |  |  |  | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 16 | 18 | 22 | 29 | 32 | 30 | 28 | 23 | 22 | 22 | 26 | 35 | 37 | 35 | 27 | 24 | 24 | 26 | 21 | 23 | 21 | 20 | 16 | 15 |
| Feels °C (?) | 15 | 16 | 19 | 26 | 29 | 26 | 25 | 21 | 19 | 19 | 23 | 31 | 33 | 32 | 23 | 23 | 21 | 23 | 20 | 20 | 18 | 17 | 13 | 13 |
- 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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