- Forecast
- Maps
- Live
- Weather State
- Spot Information
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 Wednesday 20 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 8AM is: 1.0m 11s primary swell from a Southwest direction and 0.6m 16s secondary swell from a Southwest direction (forecast issued at 02:30am May 20). The wind direction is predicted to be glassy and the swell rating is 2.
| Time (ACST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | 3.5ft (1.0m) | 11s |
| Afternoon (20 May) | 2.5ft (0.8m) | 16s |
| Evening (20 May) | 2.5ft (0.8m) | 15s |
Table - waves today at Castles. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 22°C on Fri afternoon, min 14°C on Wed morning). Winds increasing (calm on Wed morning, fresh winds from the N by Fri morning). | ||||||||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | ||||||||||||||||||||||
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 11 | SW 11 | SW 11 | SW 11 | SW 16 | SW 16 | SW 16 | SW 15 | 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 | |
304 | 263 | 263 | 224 | 306 | 302 | 295 | 280 | 262 | 528 | 520 | 520 | 513 | 447 | 382 | 322 | 161 | 215 | 221 | 285 | 341 | 492 | 588 | 606 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | off | glassy | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 00:40AM0.65m | 1:48PM1.28m | 00:38AM0.67m | 2:05PM1.16m | 00:41AM0.69m | 2:17PM1.04m | ||||||||||||||||||
Low Tide | 6:32AM0.02m | 8:25PM0.45m | 6:47AM0.06m | 8:31PM0.52m | 7:00AM0.14m | 8:37PM0.55m | ||||||||||||||||||
 | |  |  | | | | | | | | | |  | | |  | | | | | | | | |
 | — | — | 7:22 | — | — | — | — | — | — | — | 7:22 | — | — | — | — | — | — | — | 7:22 | — | — | — | — | — |
 | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:45 | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 15 | 15 | 15 | 14 | 16 | 17 | 15 | 16 | 16 | 16 | 16 | 15 | 19 | 21 | 21 | 21 | 19 | 18 | 17 | 17 | 20 | 22 | 22 | 19 |
13 | 13 | 14 | 13 | 15 | 15 | 11 | 14 | 13 | 13 | 12 | 11 | 16 | 19 | 18 | 17 | 14 | 12 | 11 | 10 | 13 | 16 | 17 | 12 | |
Swell 1 Height (m) Direction Period (s) | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | 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 |
 kJ | 304 | 263 | 263 | 224 | 228 | 250 | 217 | 217 | 217 | 528 | 520 | 520 | 513 | 447 | 382 | 322 | 161 | 215 | 221 | 285 | 341 | 492 | 588 | 606 |
Swell 2 Height (m) Direction Period (s) | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | — | — | — | — | — | — | — | SW 16 | SW 16 | SW 16 | — | — | — | — | — |
| kJ | 192 | 188 | 169 | 211 | 306 | 302 | 295 | 280 | 262 | — | — | — | — | — | — | — | 88 | 42 | 68 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | ENE 3 | — | NE 3 | NNE 3 | — | — | ESE 3 | ENE 3 | NNE 3 | N 4 | N 4 | N 4 | NNW 4 | NW 4 | NNE 2 |
| kJ | — | — | — | — | — | — | — | — | — | 1 | — | 2 | 2 | — | — | 3 | 3 | 4 | 12 | 14 | 14 | 8 | 3 | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 178 | 402 | 402 | 178 | 0 | 402 |
Best forecast wave conditions in Nullarbor | ||||||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Castles surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest