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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 Sunday 17 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 7PM is: 1.3m 13s primary swell from a Southwest direction and 0.3m 3s secondary swell from a South-southeast direction (forecast issued at 02:30pm May 17). The wind direction is predicted to be cross-offshore.
| Time (ACST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | - | - |
| Afternoon (17 May) | 4.5ft (1.3m) | 13s |
| Evening (17 May) | 4.5ft (1.3m) | 13s |
Table - waves today at Castles. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 17°C on Sun afternoon, min 14°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Sun 17 | Monday 18 | Tuesday 19 | Wed 20 | |||||||||||||||||||||
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 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | |
656 | 553 | 560 | 560 | 560 | 480 | 473 | 398 | 367 | 277 | 272 | 232 | 190 | 180 | 241 | 320 | 338 | 338 | 363 | 314 | 308 | 303 | 263 | 258 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross | cross-off | cross-off | cross-off | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | on | on | on | on | cross-on | cross-on | cross | cross | cross-off | cross-off | off | off | |
High Tide | 00:36AM0.70m | 1:05PM1.46m | 00:41AM0.65m | 1:28PM1.39m | 00:40AM0.65m | |||||||||||||||||||
Low Tide | 7:27PM0.13m | 6:04AM0.03m | 7:54PM0.24m | 6:18AM0.01m | 8:13PM0.36m | 6:32AM0.02m | ||||||||||||||||||
 | |  | | | | | | | | | | | | | |  | | | | | | | | |
 | — | — | — | — | — | — | 7:20 | — | — | — | — | — | — | — | 7:20 | — | — | — | — | — | — | — | 7:22 | — |
 | — | 5:47 | — | — | — | — | — | — | — | 5:46 | — | — | — | — | — | — | — | 5:46 | — | — | — | — | — | 5:45 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 17 | 17 | 16 | 16 | 16 | 16 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 16 | 16 | 15 | 15 | 14 | 14 |
15 | 14 | 12 | 13 | 14 | 14 | 13 | 15 | 14 | 13 | 13 | 13 | 14 | 14 | 14 | 13 | 14 | 14 | 14 | 14 | 13 | 14 | 13 | 13 | |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 21 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 |
 kJ | 656 | 553 | 560 | 560 | 560 | 480 | 473 | 398 | 367 | 277 | 18 | 232 | 190 | 180 | 241 | 320 | 338 | 338 | 363 | 314 | 308 | 303 | 263 | 258 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | SW 23 | SW 21 | SW 21 | SW 21 | SW 21 | SW 20 | SW 20 | SW 20 | SW 19 | SW 18 | SW 18 | SW 18 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 |
| kJ | — | — | — | — | — | — | — | 21 | 18 | 18 | 18 | 17 | 60 | 60 | 60 | 58 | 112 | 155 | 112 | 155 | 192 | 188 | 216 | 211 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | SSE 3 | SSE 3 | SSE 2 | — | — | — | — | SW 12 | SW 12 | SW 3 | SW 4 | SW 4 | SW 11 | SW 11 | SW 12 | SW 18 | SSW 18 | SSW 11 | SSE 2 | SSE 2 | — | — |
| kJ | — | — | 1 | 1 | 1 | — | — | — | — | 37 | 272 | 4 | 5 | 5 | 44 | 45 | 48 | 80 | 124 | 49 | 1 | 1 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 491 | 243 | 401 | 0 | 1 | 1 | 1 | 633 | 648 | 583 | 633 | 648 | 552 | 552 | 940 | 1035 | 1049 | 491 | 491 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Nullarbor | ||||||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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