Surf Forecasts:
Castles surf forecast from 2 Aug 2026:
- Best quality surf: Thursday 6 Aug, 6PM (local time) - 5ft (1.5m), 17s period, SW swell with offshore winds.
- Most powerful swell: Sunday 9 Aug, 3PM (local time) - 11ft (3.5m), 16s period, SW swell with 6,882 kJ wave energy.
- Next surfable swell (1★+): Tuesday 4 Aug, 12AM (local time) - 4.5ft (1.4m), 13s period with SW swell.
Best Forecast Surf Conditions for Castles this week:
The surf forecast for Castles over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 04) at 12AM. The primary swell is predicted to be 1.4m and 13s period with a secondary swell of 0.6m and 17s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Castles in the next 16 days are 3.5m 16s and forecast to arrive on Sunday (Aug 09) at 3PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Wednesday (Aug 05) at 9AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Tue 4th Aug) | 4.5ft (1.4m) 13s |
| Best Surf | 6PM (Thu 6th Aug) | 5ft (1.5m) 17s |
| Most Powerful | 3PM (Sun 9th Aug) | 11ft (3.5m) 16s |
Table - best surf conditions forecast for Castles over the next 16 days.
The Lowdown
Rusty here again, same story, different numbers. Let’s look at Castles in feet and Fahrenheit.
We’ve got a bit of a wait, honestly. The first few days are a mess – poor surf, choppy onshore wind. Sunday the 2nd and Monday the 3rd are best left alone.
The real window opens Tuesday the 4th. A clean offshore breeze from the northeast finally shows up, blowing into a 4ft SW groundswell. Water’s 60°, dead average for the date. Wave energy is moderate (467). It’ll be clean, fun, small. That afternoon, a 3ft, 15-second period swell keeps it glassy. This is the day to circle, a real standout.
Wednesday the 5th stays clean. Morning swell is just over 2ft, but with a very long 19-second period, it’ll have plenty of grunt and a glassy surface. Light offshore wind. Thursday the 6th is similar – 4ft to 4ft, clean offshore, 16-second period. Small, but quality.
Friday the 7th gets bigger, with a 6ft swell (1548 energy), but it’s blowing a strong 25 mph offshore wind. It’s clean but powerful and tricky. Experienced crew only.
From Saturday the 8th, the wind goes bad. Big swell hits – over 8ft by Sunday the 9th – but it’s onshore and messy. The 12ft swell with a 16-second period on Sunday afternoon carries massive energy (10722), but with a near-gale onshore wind, it’s a brutal chop. That’s expert territory, and not much fun even then. The whole next week is mostly too big, too windy, or both.
For the kite crew, that big onshore wind and heavy swell from Saturday the 8th onward will be incredible. For us paddle guys, it’s a long, quiet blank run, which is normal here when the trades get up. We’ll see if the forecast shifts.
Rusty, signing off.
Short Range ForecastMostly dry. Very mild (max 18°C on Tue afternoon, min 10°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Fri night. Warm (max 21°C on Thu afternoon, min 14°C on Wed morning). Winds increasing (light winds from the ENE on Wed afternoon, strong winds from the N by Fri morning). | ||||||||||||||||||||
Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SW 15 | SW 15 | SW 16 | SW 14 | SW 14 | SW 13 | SW 12 | SW 15 | SW 15 | SW 19 | SW 18 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 17 | SW 16 | SW 16 | WSW 15 | WSW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 831 | 1155 | 1856 | 1273 | 990 | 669 | 314 | 258 | 335 | 361 | 694 | 667 | 719 | 931 | 1492 | 1548 | 1383 | 1052 | 1082 | 1537 | 3092 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross | cross | off | off | cross-off | cross-off | cross-off | off | off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-on | on | on |
High Tide | 2:06PM1.33m | 2:21AM1.04m | 2:27PM1.22m | 2:48AM1.04m | 2:45PM1.07m | 3:17AM1.01m | 2:52PM0.90m | 3:49AM0.95m | 2:24PM0.75m | 4:31AM0.85m | 11:17AM0.96m | 2:07AM0.58m | |||||||||
Low Tide | 8:27PM0.04m | 8:13AM0.09m | 8:45PM0.08m | 8:43AM0.19m | 9:00PM0.13m | 9:12AM0.35m | 9:08PM0.19m | 9:37AM0.53m | 8:59PM0.25m | 9:18AM0.74m | 8:14PM0.26m | 7:25PM0.20m | |||||||||
 |  |  | | |  | | | |  | | | | | | | |  | |  | | |
 | 7:26 | — | — | 7:26 | — | — | 7:24 | — | — | 7:24 | — | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — | — |
 | — | 6:00 | — | — | 6:01 | — | — | 6:02 | — | — | 6:02 | — | — | 6:04 | — | — | 6:05 | — | — | 6:05 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | — | 1 | — |
Temp °C | 15 | 15 | 14 | 14 | 14 | 13 | 15 | 18 | 17 | 17 | 19 | 19 | 19 | 21 | 20 | 19 | 21 | 16 | 17 | 16 | 13 |
Feels °C | 10 | 10 | 10 | 11 | 10 | 8 | 11 | 14 | 12 | 13 | 16 | 14 | 15 | 17 | 14 | 9 | 14 | 9 | 12 | 6 | 2 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 15 | SW 16 | SW 14 | SW 14 | SW 13 | SW 12 | SW 15 | SW 15 | SW 19 | SW 18 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 17 | SW 16 | SW 16 | SW 15 | — |
| kJ | 831 | 1155 | 1856 | 1273 | 990 | 669 | 314 | 258 | 318 | 361 | 694 | 667 | 719 | 931 | 1492 | 1548 | 1383 | 1052 | 1082 | 1480 | — |
Swell 2 Height (m) Direction Period (s) | WNW 4 | — | — | — | SW 18 | SW 17 | SW 16 | SW 10 | SW 21 | SW 15 | SSW 9 | SSE 8 | — | NW 5 | — | — | WNW 4 | — | — | — | — |
| kJ | 15 | — | — | — | 81 | 181 | 153 | 104 | 150 | 171 | 16 | 22 | — | 7 | — | — | 11 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SW 20 | SSW 9 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 335 | 27 | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 15 | SW 15 | SW 16 | — | SW 14 | — | NE 3 | — | NE 3 | N 4 | NNW 4 | NE 2 | NNE 2 | — | NNE 3 | N 4 | W 3 | N 4 | NW 4 | WSW 15 | WSW 15 |
| kJ | 60 | 949 | 62 | — | 50 | — | 2 | — | 3 | 13 | 10 | 1 | 1 | — | 4 | 15 | 1 | 12 | 16 | 1537 | 3092 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1035 | 1149 | 940 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 564 | 564 | 642 | 1227 | 1166 | 1344 |
Best forecast wave conditions in Nullarbor | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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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.
Information about the Castles Surf forecast
The above surf forecast table for Castles provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Castles can be found by selecting the local surf guide option on the grey menu. Our Castles surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Castles) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Castles may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Are you planning a holiday in Nullarbor? If you are looking for accommodation near Castles, camping, hotels and holiday cottages in Nullarbor, consider staying in Thevenard which is 64 km (40 miles) away.
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