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Castles Surf Forecast
/ SA – Nullarbor (9 breaks) / South Australia (91 breaks) /
Surf Forecasts:
Castles surfForecast / SA – Nullarbor / Australia
48hr Weather and Surf, issued 2 am Thursday 21 May 2026 ACSTForecast 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
18.3° C
(Which is normal for this time of year)How big are the waves at Castles today?
The current surf forecast for Castles at 5AM is: 1.1m 14s primary swell from a Southwest direction (forecast issued at 02:30am May 21). The wind direction is predicted to be cross-offshore.
| Time (ACST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 3.5ft (1.1m) | 14s |
| Afternoon (21 May) | 3.5ft (1.1m) | 14s |
| Evening (21 May) | 3ft (0.9m) | 14s |
Table - waves today at Castles. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 8mm), mostly falling on Sat afternoon. Warm (max 21°C on Thu afternoon, min 14°C on Sat night). Winds increasing (light winds from the NE on Thu afternoon, fresh winds from the SW by Sat night). | ||||||||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | ||||||||||||||||||||||
12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 14 | SW 14 | SW 14 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 13 | |
262 | 598 | 520 | 520 | 513 | 447 | 382 | 322 | 199 | 215 | 224 | 285 | 341 | 472 | 580 | 472 | 459 | 422 | 398 | 386 | 277 | 260 | 260 | 784 | |
Wind (km/h) | ||||||||||||||||||||||||
off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | on | cross-on | cross-on | on | |
High Tide | 00:38AM0.67m | 2:05PM1.16m | 00:41AM0.69m | 2:17PM1.04m | 00:46AM0.68m | 2:22PM0.92m | ||||||||||||||||||
Low Tide | 6:47AM0.06m | 8:31PM0.52m | 7:00AM0.14m | 8:37PM0.55m | 7:06AM0.26m | 8:46PM0.57m | ||||||||||||||||||
 | | |  |  |  | |  |  | | | | | | | | | | | |  | |  | | |
 | — | — | 7:22 | — | — | — | — | — | — | — | 7:22 | — | — | — | — | — | — | — | 7:24 | — | — | — | — | — |
 | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:44 | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 4 | 1 | 1 | |
Temp °C | 16 | 16 | 15 | 15 | 19 | 21 | 21 | 20 | 19 | 17 | 16 | 16 | 19 | 20 | 19 | 19 | 18 | 16 | 15 | 15 | 16 | 15 | 15 | 15 |
13 | 13 | 11 | 11 | 15 | 18 | 17 | 15 | 14 | 11 | 10 | 9 | 11 | 13 | 13 | 13 | 11 | 10 | 8 | 12 | 15 | 9 | 9 | 8 | |
Swell 1 Height (m) Direction Period (s) | SW 11 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 14 | SW 14 | SW 14 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 13 | NW 4 | SW 13 | SW 12 | SW 12 | — |
 kJ | 183 | 598 | 520 | 520 | 513 | 447 | 382 | 322 | 199 | 215 | 224 | 285 | 341 | 472 | 580 | 472 | 459 | 422 | 398 | 8 | 277 | 260 | 260 | — |
Swell 2 Height (m) Direction Period (s) | SW 15 | — | — | — | — | — | — | — | SW 16 | SW 17 | SW 16 | — | — | — | — | — | — | — | — | — | — | WSW 5 | SW 5 | — |
| kJ | 262 | — | — | — | — | — | — | — | 90 | 43 | 94 | — | — | — | — | — | — | — | — | — | — | 27 | 25 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | E 3 | — | — | NNE 3 | N 3 | — | — | E 3 | NE 3 | N 3 | N 4 | N 4 | N 4 | NNW 4 | N 4 | N 3 | N 4 | N 4 | NNW 4 | SW 13 | W 5 | SW 13 | SW 5 | SW 13 |
| kJ | 1 | — | — | 1 | 1 | — | — | 1 | 3 | 8 | 12 | 18 | 19 | 12 | 7 | 8 | 18 | 18 | 16 | 386 | 21 | 40 | 4 | 784 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 402 | 402 | 402 | 1 | 1 | 402 | 402 | 402 | 402 | 564 | 432 | 401 | 564 |
Best forecast wave conditions in Nullarbor | ||||||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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