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:
Hanson Bay surfForecast / SA – Kangaroo Island / Australia
48hr Weather and Surf, issued 3 am Wednesday 17 Dec 2025 ACDTForecast update in hr min s Forecast update imminent
Hanson Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Hanson Bay sea temperature is
17.0° C
(Which is normal for this time of year)How big are the waves at Hanson Bay today?
The current surf forecast for Hanson Bay at 8AM is: 1.1m 10s primary swell from a South direction and 0.9m 11s secondary swell from a Southwest direction (forecast issued at 03:30am December 17). The wind direction is predicted to be offshore and the swell rating is 3.
| 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 (0.7m) | 14s |
Table - waves today at Hanson Bay. (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 | 15 | 15 | 14 | 14 | 14 | 12 | 12 | 14 | 14 | 14 | 13 | 11 | 13 | 13 | 13 | 13 | 13 | 12 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 410 | 300 | 284 | 235 | 192 | 142 | 171 | 200 | 327 | 363 | 306 | 330 | 198 | 401 | 167 | 162 | 151 | 149 | 180 | 304 | 304 | 269 | 245 | 510 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | off | glass | cross- on | glass | cross- off | cross- off | cross- off | off | off | cross- off | cross | cross- on | glass | glass | cross- on | cross- on | cross- on | cross- on | cross- on | on | on |
High Tide / height (m) | 1:16AM 0.77 | 12:55PM 0.23 | 1:43AM 0.84 | 1:39PM 0.24 | 2:11AM 0.89 | 2:07PM 0.24 | ||||||||||||||||||
Low Tide / height (m) | 9:35AM 0.20 | 5:31PM 0.15 | 9:43AM 0.17 | 6:13PM 0.13 | 10:00AM 0.14 | 6:52PM 0.09 | ||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | ||||||||||||||||||||||
| Sunrise | - | - | 6:00 | - | - | - | - | - | - | - | 6:00 | - | - | - | - | - | - | - | 6:01 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 8:36 | - | - | - | - | - | - | - | 8:36 | - | - | - | - | - | - | - | 8:37 | - |
 | |  | | | | | | | | | | | |  |  |  | | | |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 17 | 19 | 22 | 28 | 28 | 28 | 25 | 24 | 24 | 24 | 27 | 34 | 33 | 31 | 25 | 21 | 18 | 17 | 17 | 17 | 17 | 16 | 15 | 14 |
| Feels °C (?) | 14 | 16 | 20 | 25 | 26 | 26 | 24 | 21 | 21 | 20 | 23 | 29 | 28 | 26 | 23 | 20 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 |
- 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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