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:
Cactus surfForecast / SA – Nullarbor / Australia
48hr Weather and Surf, issued 3 pm Monday 15 Dec 2025 ACDTForecast update in hr min s Forecast update imminent
Cactus surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Cactus sea temperature is
20.2° C
(Which is 1.9°C warmer than normal for this time of year)How big are the waves at Cactus today?
The current surf forecast for Cactus at 6PM is: 1.2m 12s primary swell from a Southwest direction and 0.1m 20s secondary swell from a Southwest direction, 1.1m 5s secondary swell from a South-southeast direction (forecast issued at 03:30pm December 15). The wind direction is predicted to be cross-offshore.
| Time (ACDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | - | - |
| Afternoon (15 Dec) | 4.5ft (1.3m) | 12s |
| Evening (15 Dec) | 4ft (1.2m) | 12s |
Table - waves today at Cactus. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| 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 | 1 AM | 4 AM | 7 AM | 10 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 15 | 15 | 10 | 10 | 14 | 14 | 14 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 812 | 502 | 430 | 330 | 319 | 228 | 217 | 337 | 280 | 215 | 151 | 146 | 110 | 58 | 37 | 59 | 57 | 69 | 92 | 74 | 103 | 102 | 100 | 102 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross | cross- off | cross- off | cross- off | cross- off | off | off | cross- off | cross | cross- off | cross- off | cross- off | off | off | cross- off | cross- off | cross | cross- off | cross- off | cross- off | off | cross- off | cross- off |
High Tide / height (m) | 11:53PM 0.98 | 11:36AM 0.63 | 12:06AM 1.11 | 12:06PM 0.68 | 12:27AM 1.22 | |||||||||||||||||||
Low Tide / height (m) | 4:31PM 0.38 | 6:46AM 0.42 | 5:04PM 0.31 | 6:55AM 0.32 | 5:34PM 0.24 | 7:14AM 0.24 | ||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 6:26 | - | - | - | - | - | - | - | 6:26 | - | - | - | - | - | - | - | 6:26 | - |
| Sunset | - | - | 8:38 | - | - | - | - | - | - | - | 8:39 | - | - | - | - | - | - | - | 8:40 | - | - | - | - | - |
 | | |  | | | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 18 | 17 | 17 | 17 | 19 | 17 | 17 | 23 | 28 | 28 | 25 | 21 | 23 | 24 | 26 | 32 | 35 | 35 | 32 | 28 | 28 | 28 | 30 | 36 |
| Feels °C (?) | 12 | 11 | 11 | 11 | 14 | 11 | 13 | 19 | 24 | 21 | 19 | 17 | 18 | 20 | 21 | 26 | 31 | 29 | 25 | 22 | 22 | 23 | 25 | 31 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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