Surf Forecasts:
Castles surf forecast from 10 Sep 2026:
- Best quality surf: Thursday 10 Sep, 9PM (local time) - 5ft (1.5m), 15s period, SSW swell with offshore winds.
- Most powerful swell: Wednesday 16 Sep, 9AM (local time) - 6ft (1.8m), 16s period, SW swell with 1,532 kJ wave energy.
- Next surfable swell (1★+): Thursday 10 Sep, 9PM (local time) - 5ft (1.5m), 15s period with SSW 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 Thursday (Sep 10) at 9PM. The primary swell is predicted to be 1.5m and 15s period with a secondary swell of 0.1m and 26s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Castles in the next 16 days are 1.8m 16s and forecast to arrive on Wednesday (Sep 16) at 9AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Tuesday (Sep 15) at 6PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Thu 10th Sep) | 5ft (1.5m) 15s |
| Best Surf | 9PM (Thu 10th Sep) | 5ft (1.5m) 15s |
| Most Powerful | 9AM (Wed 16th Sep) | 6ft (1.8m) 16s |
Table - best surf conditions forecast for Castles over the next 16 days.
The Lowdown
Alright folks, Rusty here with a look at the only wave in town for the next couple of weeks – Castles. Gotta be honest, it’s a bit of a quiet run, but there are a couple of windows worth paddling out for.
We’ve got a decent run of groundswell from the SSW through the period, but the wind is going to be the main character here. For the first week, it’s mostly a case of waiting for the right moment. The water temp is sitting around 60°, which is pretty much spot on for this time of year, so no surprises there.
The real standout is looking like Wednesday, September 16th. That morning we’ve got a solid 6ft SSW groundswell wrapping in with a period of 16 seconds, pumping a strong wave energy (1532). But the beauty is the gentle offshore easterly breeze at 15 mph. That’ll keep Castles clean, lined up, and perfect for the experienced crew. That 6ft from the SSW is right in the pocket for the reef, and that long period will give you some proper grunt. Just be mindful, with this size and period, it might be a touch much for beginners, but for the rest of us, it’s game on.
Before that, Friday, September 11th afternoon looks like a nice little session. You’ll get a clean 4ft SSW swell at 15 seconds with a silky offshore breeze from the ENE at just 3 mph. It’s not huge, with moderate energy (666), but the conditions will be glassy, making for some really fun, user-friendly waves. A good one to get the rust off.
Looking further out, Monday, September 21st morning also has potential. A 4ft SSW swell with a 12-second period and a light offshore easterly means it’ll be clean again. The energy is moderate (511), but it’s a solid option for an early session.
Now, the bad news. After that Wednesday beaut, the wind really starts to howl out of the north and then turns onshore and strong from the SW from the 22nd onwards. We’re looking at some seriously blown-out conditions, with a big 10ft+ swell on the 23rd and 24th, but it’ll be a complete mess with strong onshore winds. That’s a hard pass for a paddle board, though it might be kicking for the kites.
So, to sum it up: if you can, get out on the 16th for the pick of the period. The 11th and 21st are your next best bets. The rest of the time, it’s a waiting game.
Stay wet.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Sat afternoon, min 16°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 18°C on Wed morning, min 13°C on Mon night). Wind will be generally light. | |||||||||||||||||||
Thu 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | ||||||||||||||
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) | SSW 16 | SW 15 | SW 15 | SW 15 | SW 16 | SW 17 | SW 16 | SW 18 | SW 16 | SW 16 | SW 15 | SW 14 | SW 10 | SW 16 | SW 15 | SW 14 | SW 15 | SW 16 | SW 15 | SW 15 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1322 | 868 | 685 | 666 | 746 | 742 | 474 | 307 | 508 | 416 | 262 | 377 | 129 | 653 | 1185 | 1307 | 1212 | 1532 | 1279 | 962 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | off | cross-off | cross-off | cross | cross | cross | cross-on | cross-on | cross-off | cross | cross-off | cross-off | cross-off | cross-off | off | cross | cross-off |
High Tide | 00:33AM1.03m | 12:37PM1.26m | 00:44AM1.14m | 12:48PM1.22m | 00:58AM1.24m | 12:58PM1.18m | 1:14AM1.30m | 1:09PM1.14m | 1:31AM1.32m | 1:19PM1.09m | 1:48AM1.30m | 1:29PM1.04m | 2:06AM1.24m | |||||||
Low Tide | 6:44PM0.07m | 6:23AM0.05m | 6:47PM0.04m | 6:43AM0.02m | 6:53PM-0.01m | 7:01AM0.02m | 7:01PM-0.05m | 7:19AM0.05m | 7:11PM-0.08m | 7:37AM0.10m | 7:23PM-0.08m | 7:53AM0.17m | 7:36PM-0.05m | |||||||
 |  |  | | | |  |  | | | | | | | | | | | | | |
 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | 6:35 | — | — |
 | 6:25 | — | — | 6:27 | — | — | 6:27 | — | — | 6:28 | — | — | 6:28 | — | — | 6:29 | — | — | 6:30 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 19 | 19 | 19 | 19 | 25 | 27 | 27 | 17 | 16 | 15 | 17 | 16 | 14 | 15 | 15 | 13 | 18 | 18 | 18 |
Feels °C | 15 | 13 | 14 | 16 | 14 | 18 | 22 | 22 | 14 | 12 | 13 | 13 | 12 | 11 | 11 | 10 | 9 | 15 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SW 15 | SW 15 | SW 15 | SW 16 | SW 17 | SW 16 | SW 14 | SW 16 | SW 16 | SW 15 | SW 14 | SW 10 | SW 16 | SW 15 | SW 14 | SW 15 | SW 16 | SW 15 | SW 15 |
| kJ | 1322 | 868 | 685 | 666 | 746 | 742 | 474 | 248 | 508 | 416 | 262 | 377 | 129 | 653 | 1185 | 1307 | 1212 | 1532 | 1279 | 962 |
Swell 2 Height (m) Direction Period (s) | SW 26 | SW 25 | SW 24 | — | — | SW 18 | SW 20 | SW 18 | NW 4 | — | — | SW 19 | SW 14 | — | — | — | — | — | — | — |
| kJ | 26 | 25 | 22 | — | — | 392 | 65 | 307 | 5 | — | — | 57 | 97 | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | S 9 | — | — | — | SW 18 | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 2 | — | — | — | 109 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | ESE 2 | E 3 | NE 3 | — | SE 4 | N 3 | NNW 4 | NNW 3 | — | SSW 3 | SSW 4 | — | SSE 3 | SE 4 | SE 4 | SSE 2 | ESE 4 | — | — | — |
| kJ | 1 | 8 | 2 | — | 3 | 3 | 6 | 3 | — | 4 | 3 | — | 1 | 10 | 11 | 1 | 8 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1 | 0 | 0 | 0 | 0 | 178 | 178 | 402 | 510 | 633 | 1 | 0 | 633 | 1 | 243 | 491 | 1 | 0 | 489 | 1 |
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.
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.
Nearest