Surf Forecasts:
Castles surf forecast from 2 Sep 2026:
- Best quality surf: Friday 4 Sep, 12AM (local time) - 7ft (2.1m), 15s period, SW swell with offshore winds.
- Most powerful swell: Wednesday 9 Sep, 12PM (local time) - 6.5ft (2.0m), 21s period, SW swell with 3,293 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 12AM (local time) - 7ft (2.1m), 15s 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 Friday (Sep 04) at 12AM. The primary swell is predicted to be 2.1m and 15s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Castles in the next 16 days are 2.0m 21s and forecast to arrive on Wednesday (Sep 09) at 12PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Monday (Sep 07) at 6AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Fri 4th Sep) | 7ft (2.1m) 15s |
| Best Surf | 12AM (Fri 4th Sep) | 7ft (2.1m) 15s |
| Most Powerful | 12PM (Wed 9th Sep) | 6.5ft (2.0m) 21s |
Table - best surf conditions forecast for Castles over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s brewing for Castles over the next couple of weeks. It’s a bit of a slow burner, so don’t rush for the board just yet.
The first few days are a write-off. Thursday and Friday are messy with lumpy cross-shore winds and onshore junk, pushing the swell up to 8ft but the quality is just not there for paddle surfing—honestly, with a strong wind on a beach-and-reef setup, that might be more of a kite day. We’ve got moderate combined wave energy (1033–4251) but it’s wasted.
We hit a clean window on Sunday the 6th. Sunday morning is the standout of the entire outlook. We’re looking at a clean 6ft SW swell with a 14-second period, and a lovely offshore wind from the ENE. That’s going to groom the reef beautifully. The water temp is 61°, which is pretty much spot on for this time of year. The combined energy is moderate at 1139, but with offshore wind, this will be the session to chase. It’s a consistent spot, and with that direction, it’ll be drawing in clean lines. For beginners, 6ft is manageable, but watch the tide.
From Monday the 7th through the middle of the week, we see size dropping off, wind swinging onshore or cross-off, and the quality fades. There’s a brief glimmer on the 15th (Tuesday morning) where the swell is 5ft from the SW with a 17-second period and clean cross-off wind—that’s a long period groundswell, so the reef will handle it well, and paddling out should be okay between sets. Another decent option for experienced surfers, but not a standout.
Into the second week, there’s a small, clean window on Wednesday the 16th afternoon with a 4ft SW swell, 14-second period, and light offshore wind from the east. Combined energy is low at 817, but with clean conditions and small crowds possible, it’ll be a fun little novelty session if all lines up. After that, strong winds return to mess things up, so don’t hold your breath for that final week.
The real one to circle on the calendar is Sunday the 6th, morning session. That’s the pick of the lot.
Rusty, signing off.
Short Range ForecastLight rain (total 4mm), mostly falling on Fri afternoon. Warm (max 24°C on Fri morning, min 10°C on Sat night). Winds decreasing (fresh winds from the WSW on Fri night, light winds from the E by Sat night). | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Sun night. Very mild (max 19°C on Sun afternoon, min 12°C on Sun morning). Winds increasing (light winds from the ENE on Sun morning, strong winds from the SE by Sun night). | ||||||||||||||||||||
Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | |||||||||||||||
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 14 | SW 14 | SW 15 | SW 15 | SW 15 | SW 15 | SW 12 | SW 13 | SW 13 | SW 14 | SW 14 | SW 13 | SW 13 | SW 20 | SW 18 | SW 17 | SW 16 | SW 16 | SW 17 | SW 19 | SW 17 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1033 | 1220 | 1857 | 1823 | 2490 | 1606 | 1713 | 1693 | 1482 | 1139 | 886 | 345 | 205 | 261 | 1202 | 1282 | 931 | 793 | 1297 | 3075 | 2327 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | off | cross | on | on | on | cross-on | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 1:55PM0.86m | 2:56AM1.07m | 1:20PM0.80m | 3:04AM0.92m | 12:18PM0.85m | 2:38AM0.77m | 11:43AM0.99m | 1:29AM0.68m | 11:44AM1.13m | 00:44AM0.70m | 11:57AM1.23m | 00:28AM0.79m | 12:11PM1.28m | 00:26AM0.90m | |||||||
Low Tide | 8:05PM0.07m | 8:45AM0.54m | 7:54PM0.11m | 7:58AM0.69m | 7:31PM0.13m | 6:09AM0.69m | 7:06PM0.13m | 5:24AM0.54m | 6:51PM0.12m | 5:29AM0.37m | 6:45PM0.11m | 5:45AM0.23m | 6:43PM0.10m | ||||||||
 | |  |  | |  |  | | | | |  | | | | |  | | | | | |
 | 6:52 | — | — | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 6:46 | — | — |
 | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:23 | — | — | 6:23 | — | — | 6:24 | — | — | 6:24 | — |
mm | — | — | — | 1 | 3 | — | — | — | — | — | — | 4 | 1 | — | 2 | 2 | — | — | — | — | — |
Temp °C | 17 | 17 | 18 | 24 | 20 | 17 | 14 | 13 | 12 | 17 | 19 | 14 | 15 | 16 | 15 | 16 | 16 | 14 | 16 | 19 | 17 |
Feels °C | 14 | 14 | 14 | 19 | 17 | 13 | 8 | 9 | 10 | 13 | 15 | 7 | 9 | 10 | 9 | 12 | 10 | 7 | 9 | 13 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 15 | SW 15 | SW 15 | — | — | SW 13 | SW 13 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 18 | SW 17 | SW 16 | SW 16 | SW 17 | SW 19 | SW 17 |
| kJ | 1033 | 1220 | 1857 | 1823 | 2490 | — | — | 1693 | 1482 | 1139 | 886 | 345 | 205 | 212 | 1202 | 1282 | 931 | 793 | 1297 | 3075 | 2327 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | SW 23 | SW 21 | SW 20 | — | S 8 | S 8 | S 7 | SW 22 | — | SSE 8 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 21 | 71 | 261 | — | 57 | 1 | 42 | 897 | — | 123 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | S 21 | — | — | — | — | — | S 8 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 9 | — | — | — | — | — | 74 | — | — |
Wind waves Height (m) Direction Period (s) | — | SW 14 | E 3 | — | SW 15 | SW 15 | SW 12 | SW 14 | — | ENE 3 | — | SSE 5 | SE 6 | SE 5 | SE 5 | ESE 5 | SE 8 | ESE 4 | ESE 4 | SE 8 | SSE 8 |
| kJ | — | 51 | 6 | — | 1761 | 1606 | 1713 | 29 | — | 4 | — | 63 | 157 | 89 | 110 | 113 | 125 | 46 | 24 | 122 | 73 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 1 | 0 | 648 | 564 | 1198 | 940 | 1344 | 0 | 0 | 1 | 489 | 243 | 203 | 1 | 1 | 489 | 1527 | 1577 | 1620 | 1198 |
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