Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Castles surfForecast / SA – Nullarbor / Australia
48hr Weather and Surf, issued 9 am Friday 19 Dec 2025 ACDTForecast update in hr min s Forecast update imminent
Castles surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Castles sea temperature is
20.3° C
(Which is 1.8°C warmer than normal for this time of year)How big are the waves at Castles today?
The current surf forecast for Castles at 3PM is: 1.3m 7s primary swell from a South-southwest direction and 0.5m 13s secondary swell from a Southwest direction (forecast issued at 09:30am December 19). The wind direction is predicted to be cross-shore.
| Time (ACDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Dec) | 4ft (1.2m) | 6s |
| Afternoon (19 Dec) | 4.5ft (1.3m) | 7s |
| Evening (19 Dec) | 4.5ft (1.3m) | 7s |
Table - waves today at Castles. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 19 | Saturday 20 | Sunday 21 | Mon 22 | |||||||||||||||||||||
| 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 | 1 AM | 4 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 6 | 6 | 6 | 7 | 7 | 7 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 6 | 7 | 8 | 9 | 10 | 10 | 9 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 107 | 107 | 133 | 137 | 163 | 149 | 155 | 167 | 193 | 206 | 158 | 130 | 106 | 106 | 202 | 202 | 395 | 665 | 833 | 800 | 625 | 491 | 747 | 614 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross- off | cross | cross- on | cross- off | cross- off | on | on | on | cross- on | cross- on | cross- on | cross | cross | cross | cross |
High Tide / height (m) | 12:55PM 0.75 | 1:15AM 1.37 | 1:18PM 0.78 | 1:40AM 1.41 | 1:41PM 0.80 | 2:06AM 1.43 | ||||||||||||||||||
Low Tide / height (m) | 7:34AM 0.18 | 6:27PM 0.12 | 7:56AM 0.15 | 6:53PM 0.07 | 8:19AM 0.14 | 7:19PM 0.03 | ||||||||||||||||||
Friday 19 | Saturday 20 | Sunday 21 | Mon 22 | |||||||||||||||||||||
| Sunrise | 6:26 | - | - | - | - | - | - | - | 6:26 | - | - | - | - | - | - | - | 6:28 | - | - | - | - | - | - | - |
| Sunset | - | - | - | - | 8:42 | - | - | - | - | - | - | - | 8:42 | - | - | - | - | - | - | - | 8:43 | - | - | - |
 |  | |  | |  | | | | | | | |  | |  | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 17 | 18 | 18 | 18 | 17 | 17 | 16 | 16 | 17 | 19 | 21 | 19 | 19 | 21 | 20 | 17 | 17 | 18 | 18 | 17 | 17 | 16 | 16 | 16 |
| Feels °C (?) | 13 | 14 | 14 | 13 | 12 | 13 | 12 | 13 | 14 | 16 | 19 | 15 | 16 | 20 | 13 | 9 | 9 | 10 | 10 | 9 | 11 | 11 | 12 | 12 |
- 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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