
Surf Forecasts:
Castles surf forecast from 22 Jul 2026:
- Best quality surf: Friday 24 Jul, 3AM (local time) - 6ft (1.9m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Thursday 23 Jul, 9PM (local time) - 6.5ft (2.0m), 15s period, SW swell with 1,860 kJ wave energy.
- Next surfable swell (1★+): Friday 24 Jul, 3AM (local time) - 6ft (1.9m), 16s 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 (Jul 24) at 3AM. The primary swell is predicted to be 1.9m and 16s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Castles in the next 16 days are 2.0m 15s and forecast to arrive on Thursday (Jul 23) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 2s period and expected on Thursday (Jul 23) at 9PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Fri 24th Jul) | 6ft (1.9m) 16s |
| Best Surf | 3AM (Fri 24th Jul) | 6ft (1.9m) 16s |
| Most Powerful | 9PM (Thu 23rd Jul) | 6.5ft (2.0m) 15s |
Table - best surf conditions forecast for Castles over the next 16 days.
The Lowdown
Hey mates, Rusty here with the outlook for Castles. We’ve got a proper run of surf coming, but you’ll have to sit through a couple of ugly days first. The early part is messy, but there are some absolute standouts that pop later on.
Right now, Thursday the 23rd is a no-go. That 6ft SW swell at 14 seconds is getting torn up by a 15 mph cross-shore wind. It’s bumpy and choppy. The water temp is normal for the season, nothing special. Save your energy. By Friday morning the 24th, things clean up. The swell drops to 6ft from the SW, but the wind flicks to a light cross-offshore at just 3 mph. The wave energy is solid, and this is one of the best windows you’ll see all week. It’s clean and lined up for the experienced crew.
Saturday morning the 25th is a beauty for the early birds. The swell is down to 4ft from the SW, but the wind goes dead flat – glassy conditions. You’ll find clean, fun lines with moderate energy. A perfect morning for a longboard or a fish.
We hit a bit of a flat spell Sunday and Monday, with the swell dropping off. The 27th is marginal at best. But keep your eye on Tuesday the 28th. The swell comes roaring back to 6ft-7ft from the SW, with a 15-second period. The energy is pumping (up to 1832 on Tuesday afternoon). The wind is cross-onshore, so it’s not perfect, but there will be plenty of power.
The standout session is Wednesday morning the 29th. We’ve got a clean 6ft SW swell with a 15-second period, and the wind goes pure offshore at 9 mph from the east. This is what we chase – groomed, hollow lines with serious push. The energy is strong. This is the session for the crew who knows their stuff.
Thursday the 30th is a good follow-up with a smaller but still clean 5ft SW swell and offshore winds again. Moving into August, Saturday the 1st is a killer. The morning has a clean cross-offshore breeze on a 4ft SW swell, but the afternoon goes totally glassy with a very long 16-second period. The energy is solid, and the glassy surface will give you some world-class rides.
Late in the week, August 5th throws a curveball. The swell is only 2ft, but the period is a massive 19 seconds – that’s a deep-ocean groundswell. At Castles, a reef break, this long period will draw the waves out, giving you long, fast walls. The wind is light cross-offshore, keeping it clean.
We’ve got consistent options right through to the end of the window, but the real gems are the 29th and the 1st of August. Don’t sleep on that glassy Saturday afternoon. Solid forecast for the spot.
Rusty.
Short Range ForecastMostly dry. Very mild (max 14°C on Wed night, min 12°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 16°C on Sun afternoon, min 11°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | ||||||||||||||
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 15 | SW 14 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 11 | SW 14 | SW 14 | WSW 15 | SW 15 | SW 15 | SW 15 |
Wave Graph | |||||||||||||||||||
1737 | 1500 | 1563 | 1860 | 1314 | 1212 | 787 | 437 | 411 | 330 | 303 | 259 | 183 | 224 | 336 | 1310 | 1381 | 1832 | 1563 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross | cross-off | cross | cross-off | glassy | cross-on | glassy | cross | cross | cross | cross | on | cross-off | cross-on | cross-on | cross-off |
High Tide | 4:33AM0.79m | 2:02PM0.79m | 11:56AM0.81m | 11:20AM0.94m | 00:21AM0.53m | 11:34AM1.07m | 00:05AM0.60m | 11:55AM1.19m | 00:14AM0.69m | 12:17PM1.29m | 00:29AM0.76m | ||||||||
Low Tide | 9:12AM0.65m | 9:34PM0.31m | 8:49PM0.38m | 7:15PM0.37m | 4:11AM0.45m | 6:49PM0.30m | 4:58AM0.34m | 6:51PM0.22m | 5:30AM0.23m | 7:02PM0.16m | |||||||||
— | 7:33 | — | — | 7:33 | — | — | 7:31 | — | — | 7:31 | — | — | 7:31 | — | — | 7:30 | — | — | |
— | — | 5:54 | — | — | 5:55 | — | — | 5:55 | — | — | 5:57 | — | — | 5:58 | — | — | 5:58 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 13 | 13 | 13 | 12 | 13 | 13 | 13 | 12 | 14 | 16 | 14 | 15 | 16 | 14 | 15 | 15 | 14 |
Feels °C | 9 | 8 | 7 | 7 | 10 | 9 | 10 | 11 | 9 | 10 | 9 | 11 | 10 | 10 | 12 | 11 | 12 | 11 | 11 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SW 14 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 11 | SW 14 | SW 14 | S 9 | — | — | SW 15 |
1737 | 1500 | 1563 | 1860 | 1314 | 1212 | 787 | 437 | 411 | 330 | 303 | 259 | 183 | 224 | 336 | 2 | — | — | 1563 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | SW 18 | SW 18 | SW 16 | S 10 | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | 13 | 12 | 11 | 2 | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SW 15 | SSW 14 | SW 15 | SSW 16 | — | — | — | — | — | — | — | NW 3 | NNW 3 | NNW 4 | W 6 | WSW 15 | SW 15 | SW 15 | SSW 15 |
1034 | 70 | 56 | 80 | — | — | — | — | — | — | — | 1 | 4 | 50 | 211 | 1310 | 1381 | 1832 | 87 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 491 | 491 | 1242 | 132 | 0 | 1 | 0 | 0 | 491 | 0 | 1 | 501 | 0 | 0 | 510 | 0 | 1 | 1 | 0 |
Best forecast wave conditions in Nullarbor | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.










