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 Tuesday 16 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 1.8°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: 0.9m 11s primary swell from a Southwest direction and 0.3m 16s secondary swell from a Southwest direction (forecast issued at 03:30pm December 16). An open ocean swell of 0.8m 4s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (ACDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | - | - |
| Afternoon (16 Dec) | 3.5ft (1.1m) | 11s |
| Evening (16 Dec) | 2.5ft (0.8m) | 11s |
Table - waves today at Cactus. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| 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) (?) | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 15 | 15 | 10 | 10 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 234 | 314 | 172 | 146 | 110 | 58 | 60 | 59 | 57 | 70 | 94 | 74 | 103 | 102 | 100 | 102 | 169 | 130 | 130 | 125 | 407 | 482 | 109 | 94 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross | cross- off | cross- off | cross- off | off | cross- off | cross- off | cross- off | cross | cross | cross- off | off | cross- off | cross- off | cross- off | cross- on | cross | cross- on | cross | cross | cross | cross | cross |
High Tide / height (m) | 12:06AM 1.11 | 12:06PM 0.68 | 12:27AM 1.22 | 12:32PM 0.72 | 12:51AM 1.30 | |||||||||||||||||||
Low Tide / height (m) | 5:04PM 0.31 | 6:55AM 0.32 | 5:34PM 0.24 | 7:14AM 0.24 | 6:01PM 0.17 | 7:34AM 0.18 | ||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 6:26 | - | - | - | - | - | - | - | 6:26 | - | - | - | - | - | - | - | 6:26 | - |
| Sunset | - | - | 8:39 | - | - | - | - | - | - | - | 8:40 | - | - | - | - | - | - | - | 8:40 | - | - | - | - | - |
 | | |  | | | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 28 | 28 | 25 | 21 | 23 | 25 | 26 | 32 | 35 | 35 | 32 | 28 | 27 | 29 | 31 | 36 | 36 | 31 | 28 | 21 | 19 | 18 | 17 | 18 |
| Feels °C (?) | 24 | 21 | 19 | 17 | 19 | 20 | 21 | 25 | 31 | 29 | 25 | 23 | 22 | 23 | 26 | 31 | 33 | 26 | 24 | 18 | 17 | 15 | 13 | 14 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
Buy Less, Surf More This Black Friday
Surf-forecast is providing a free, all-access pass to our premium features and 12-day forecasts all weekend.
Quiksilver Teams Up With PrimaLoft® For World’s First Thermal Layering System for a Wetsuit.
Previously used in our snow jackets for mountain conditions, PrimaLoft® technology is making its debut in the surf industry. The aim is to bring mountain-grade warmth to the waves.
Vancouver Island’s Day Of Days With Reed Platenius
Surf-Forecast recently helped the 21-year-old Canadian pro surfer and adventurer score some cold water perfection at home.
Read more
Discover more articles and updates in the Greenroom.
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Cactus surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest