
Surf Forecasts:
Castles surf forecast from 8 Jul 2026:
- Best quality surf: Tuesday 14 Jul, 9PM (local time) - 7ft (2.1m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Tuesday 14 Jul, 9AM (local time) - 8ft (2.4m), 17s period, SW swell with 3,325 kJ wave energy.
- Next surfable swell (1★+): Thursday 9 Jul, 9AM (local time) - 3.5ft (1.1m), 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 Thursday (Jul 09) at 9AM. The primary swell is predicted to be 1.1m and 15s period with a secondary swell of 0.4m and 20s. 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 2.4m 17s and forecast to arrive on Tuesday (Jul 14) at 9AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Thursday (Jul 16) at 9AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Thu 9th Jul) | 3.5ft (1.1m) 15s |
| Best Surf | 9PM (Tue 14th Jul) | 7ft (2.1m) 16s |
| Most Powerful | 9AM (Tue 14th Jul) | 8ft (2.4m) 17s |
Table - best surf conditions forecast for Castles over the next 16 days.
G’day, Rusty here.
Alright, let’s have a squiz at what’s cookin’ for Castles over the next couple of weeks. It’s a bit of a mixed bag, but we’ve got a couple of real gems hiding in there if you’re patient.
The forecast starts with a tidy little window. Thursday morning, the 9th of July, we’re looking at a clean 4ft SW swell with a very long period of 15 seconds. That’s proper groundswell energy, and the light NNW breeze is blowin’ cross-off, so the faces will be nice and clean. The water’s sitting at 61°, which is about normal for this time of year, so no surprises there. The combined energy is moderate (606), but it’s a reef break, so those long-period lines will wrap in nicely. This is a standout for the whole period – good for a beginner to intermediate surfer, but the long period might make it a bit more powerful than it looks.
Thursday afternoon gets a bit dodgy with onshore wind, so I’d be in the water early. Friday morning is still rideable with a cross-shore breeze, but it’s a bit choppier. From Saturday, the 11th, through to Tuesday, the 14th, we’ve got a real run of poor conditions. The swell gets messy with strong onshore winds, and the energy spikes up but the quality drops. Not worth paddling out for a surf. Wednesday morning, the 15th of July, is where it gets interesting again. We’ve got a 6ft SW swell at 15 seconds, and a gentle offshore from the ENE. That’s a magic combo for Castles – clean, lined-up waves. The combined energy is strong (1381), but it’s in the sweet spot for experienced surfers. This is another standout session.
The rest of the week stays small and clean, but nothing to write home about. Then we hit a long gap of average to poor conditions from the 18th through to the 23rd. A few mornings look clean, but the swell is small or the wind swings onshore. There’s a big gap of about five days with no real recommendations.
Then, on Friday the 24th of July, we get a late shout. That morning we’ve got a 10ft SW swell with a 13-second period. That’s a solid, powerful swell, but it’s only for experts – over 8ft and it’ll be a handful. The wind is offshore from the SE, so the waves will be clean, but the energy is extreme (5330). This is a big, powerful, expert-only session. The afternoon holds similar size with a slight shift to SSW. It’s promising, but it’s a long way out, so keep an eye on it.
So, the two true standouts are Thursday morning the 9th, and Wednesday morning the 15th. Both have clean conditions, good swell direction, and that long-period groundswell making for some proper waves. Get in early.
Rusty.
Short Range ForecastMostly dry. Very mild (max 17°C on Fri afternoon, min 13°C on Thu night). Winds increasing (calm on Thu morning, fresh winds from the WSW by Sat morning). | Days 4-6 Weather SummarySome drizzle, heaviest during Mon afternoon. Very mild (max 16°C on Tue morning, min 13°C on Tue night). Winds decreasing (fresh winds from the W on Mon morning, light winds from the S by Tue afternoon). | ||||||||||||||||||||
Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | |||||||||||||||
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 17 | SW 15 | SW 15 | SW 14 | SW 14 | SW 7 | SW 8 | SW 12 | SW 13 | SW 13 | SW 14 | SW 16 | SW 14 | SW 13 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 |
Wave Graph | |||||||||||||||||||||
472 | 1050 | 763 | 558 | 459 | 331 | 322 | 625 | 1169 | 2207 | 1136 | 1507 | 1983 | 2944 | 1014 | 3325 | 2645 | 2009 | 1381 | 1123 | 813 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | on | cross | cross | cross-on | cross | on | cross-on | on | cross-on | on | cross-on | cross-on | on | on | on | on | cross-off | off | cross-off | off |
High Tide | 10:15AM0.97m | 11:53PM0.50m | 11:07AM1.15m | 00:15AM0.53m | 11:48AM1.29m | 00:34AM0.55m | 12:23PM1.38m | 00:49AM0.58m | 12:54PM1.41m | 1:01AM0.62m | 1:19PM1.39m | 1:14AM0.68m | |||||||||
Low Tide | 11:37PM0.46m | 6:31PM0.33m | 6:49PM0.21m | 4:29AM0.36m | 7:15PM0.15m | 5:12AM0.27m | 7:39PM0.14m | 5:46AM0.18m | 7:58PM0.18m | 6:17AM0.12m | 8:10PM0.22m | ||||||||||
7:37 | — | — | 7:37 | — | — | 7:37 | — | — | 7:37 | — | — | 7:37 | — | — | 7:37 | — | — | 7:37 | — | — | |
— | 5:46 | — | — | 5:47 | — | — | 5:47 | — | — | 5:49 | — | — | 5:49 | — | — | 5:50 | — | — | 5:50 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — |
Temp °C | 15 | 16 | 15 | 16 | 17 | 16 | 15 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 15 | 14 | 15 | 17 | 16 |
Feels °C | 14 | 13 | 13 | 12 | 13 | 12 | 8 | 7 | 9 | 10 | 10 | 11 | 8 | 9 | 12 | 12 | 12 | 12 | 12 | 13 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 17 | SW 15 | SW 15 | SW 14 | SW 14 | — | — | — | SW 13 | SW 13 | SW 14 | SW 16 | SW 14 | SW 13 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 |
472 | 1050 | 763 | 558 | 459 | 331 | — | — | — | 2207 | 1136 | 1507 | 1983 | 2944 | 1014 | 3325 | 2645 | 2009 | 1381 | 1123 | 813 | |
Swell 2 Height (m) Direction Period (s) | SW 20 | — | WSW 4 | W 4 | — | SW 5 | — | — | — | — | — | SW 18 | SW 20 | — | SW 18 | — | — | — | — | — | — |
134 | — | 4 | 3 | — | 1 | — | — | — | — | — | 516 | 136 | — | 911 | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | SW 17 | — | — | W 4 | W 5 | SW 7 | SW 8 | SW 12 | SW 12 | SW 13 | SW 17 | SW 16 | SW 14 | SW 18 | SW 17 | SW 16 | — | — | — | — |
— | 76 | — | — | 2 | 15 | 322 | 625 | 1169 | 1290 | 58 | 76 | 62 | 1838 | 81 | 75 | 68 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 178 | 0 | 0 | 501 | 553 | 1344 | 1288 | 1232 | 1288 | 1344 | 648 | 1344 | 1288 | 940 | 648 | 552 | 0 | 0 | 1 | 0 |
Best forecast wave conditions in Nullarbor | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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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.










