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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 pm 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
18.2° C
(Which is normal for this time of year)How big are the waves at Castles today?
The current surf forecast for Castles at 8PM is: 0.9m 14s primary swell from a Southwest direction (forecast issued at 02:30pm May 21). The wind direction is predicted to be offshore and the swell rating is 2.
| Time (ACST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | - | - |
| 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 7mm), mostly falling on Sat night. Warm (max 21°C on Thu afternoon, min 14°C on Sat afternoon). Winds increasing (light winds from the NE on Thu afternoon, fresh winds from the SW by Sat night). | ||||||||||||||||||||||||
Thu 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
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 | 12 AM | 3 AM | 6 AM | 9 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
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 | SW 13 | SW 13 | SW 13 | SW 12 | |
513 | 447 | 382 | 322 | 199 | 215 | 221 | 285 | 341 | 472 | 512 | 472 | 459 | 422 | 345 | 290 | 277 | 260 | 260 | 710 | 1092 | 1006 | 825 | 884 | |
Wind (km/h) | ||||||||||||||||||||||||
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 | cross | cross | cross | on | cross-on | on | on | on | cross-on | |
High Tide | 2:05PM1.16m | 00:41AM0.69m | 2:17PM1.04m | 00:46AM0.68m | 2:22PM0.92m | 00:40AM0.64m | ||||||||||||||||||
Low Tide | 8:31PM0.52m | 7:00AM0.14m | 8:37PM0.55m | 7:06AM0.26m | 8:46PM0.57m | 6:50AM0.38m | ||||||||||||||||||
 |  |  |  | | | | | | | |  | | | | | | |  | | | | | | |
 | — | — | — | — | — | — | 7:22 | — | — | — | — | — | — | — | 7:24 | — | — | — | — | — | — | — | 7:24 | — |
 | — | 5:45 | — | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:44 | — | — | — | — | — | 5:44 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 3 | 1 | — | 1 | — | |
Temp °C | 18 | 20 | 21 | 20 | 19 | 17 | 16 | 16 | 18 | 20 | 20 | 19 | 17 | 16 | 15 | 15 | 16 | 14 | 14 | 15 | 16 | 16 | 15 | 15 |
14 | 17 | 18 | 15 | 14 | 11 | 10 | 9 | 11 | 13 | 15 | 13 | 11 | 10 | 10 | 10 | 10 | 9 | 12 | 10 | 8 | 9 | 8 | 8 | |
Swell 1 Height (m) Direction Period (s) | 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 | — | — | — | — | — |
 kJ | 513 | 447 | 382 | 322 | 199 | 215 | 221 | 285 | 341 | 472 | 512 | 472 | 459 | 422 | 345 | 290 | 277 | 260 | 260 | — | — | — | — | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | SW 16 | SW 17 | SW 16 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | 90 | 43 | 42 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | N 3 | — | — | — | NE 3 | N 3 | N 4 | N 4 | N 4 | N 4 | N 4 | NW 4 | N 3 | N 4 | NNW 3 | NW 6 | WNW 6 | W 5 | W 5 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 |
| kJ | 1 | — | — | — | 3 | 7 | 12 | 18 | 14 | 14 | 7 | 4 | 5 | 9 | 5 | 17 | 18 | 12 | 21 | 710 | 1092 | 1006 | 825 | 884 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 1 | 0 | 0 | 0 | 0 | 1 | 178 | 402 | 402 | 402 | 1 | 1 | 178 | 402 | 178 | 402 | 402 | 402 | 401 | 401 | 510 | 401 | 583 | 583 |
Best forecast wave conditions in Nullarbor | ||||||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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