
Surf Forecasts:
Castles surf forecast from 12 Jul 2026:
- Best quality surf: Tuesday 14 Jul, 9PM (local time) - 6.5ft (2.0m), 15s period, SW swell with cross-offshore winds.
- Most powerful swell: Monday 13 Jul, 6PM (local time) - 10ft (3.0m), 17s period, SW swell with 5,733 kJ wave energy.
- Next surfable swell (1★+): Tuesday 14 Jul, 9PM (local time) - 6.5ft (2.0m), 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 Tuesday (Jul 14) at 9PM. The primary swell is predicted to be 2.0m and 15s 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 3.0m 17s and forecast to arrive on Monday (Jul 13) at 6PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 4s period and expected on Sunday (Jul 19) at 9AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Tue 14th Jul) | 6.5ft (2.0m) 15s |
| Best Surf | 9PM (Tue 14th Jul) | 6.5ft (2.0m) 15s |
| Most Powerful | 6PM (Mon 13th Jul) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Castles over the next 16 days.
Alright, Rusty here. Let’s have a look at what’s on the menu at Castles over the next couple of weeks.
Well, the start of this outlook is a bit of a write-off, to be honest. We’ve got a serious pulse of SW groundswell coming in, but the wind is just howling onshore. Sunday the 12th kicks off with a solid 8ft SW swell (2903 combined energy), but it’s getting hammered by a 19 mph W wind. The water temp is sitting at 61°, which is about average for the time of year, but it might as well be a washing machine in there. Not one for the paddle.
Monday the 13th is more of the same bad news – the swell actually builds to 8ft and even 10ft, with a really long 16-second period. That’s proper groundswell, but it’s all cross-on and onshore wind. At over 5ft, this is already too much for beginners, and with the chop, it’s only going to appeal to someone looking for punishment.
The first real light in the tunnel comes Wednesday morning the 15th. The swell drops to a much more manageable 5ft from the SW, still with a nice 15-second period. That’s the kind of groundswell that can offer some real shape at a reef like Castles. The magic is the wind: a light 9 mph ENE breeze that’s offshore. The water will be glassy and clean. Conditions are rated excellent for experienced surfers. This is our first standout – Wednesday morning is the one to circle.
Thursday the 16th and Friday the 17th still have some fun, clean conditions with cross-off winds, but the swell steadily drops from 4ft down to 4ft. The energy is weakening (664 down to 555), so it’s getting smaller and more marginal. Still rideable, but nothing to write home about compared to Wednesday.
After that, we hit a dry spell. Saturday the 18th has tiny 3ft swell with a strong 19 mph N wind – that’s just a blown-out mess. Sunday the 19th looks a bit more promising in size (5ft) but the wind is onshore again. Not much for the surfer there.
We get another brief flicker of hope on Monday the 20th with a clean 4ft swell and light NNE winds, and again on Tuesday the 21st with a 5ft swell and a 13-second period with offshore E wind. The energy is moderate (683), and the conditions are rated very good. That Tuesday morning is a solid, reliable window for a clean, if not huge, session.
Past that, the outlook gets messy. A big lump of wind and swell hits around Wednesday the 22nd and Thursday the 23rd brings a tiny glassy 3ft swell with SE wind – calm, but small. The biggest red flag is the final weekend: by Friday the 24th and Saturday the 25th, we’re looking at 8ft to 10ft of SW swell again, but with onshore and cross-on winds over 12 mph. That’s a full-on closeout situation for anyone but the most die-hard experts, if even them.
For the last few days, the swell fades, but the wind stays onshore or cross. Not much to get excited about.
So to wrap it up: the standout is undeniably Wednesday morning the 15th for clean, solid groundswell. Tuesday the 21st is your backup for a clean, smaller session. Everything else has a lot of wind and chop to fight through.
This is Rusty, signing off.
Short Range ForecastSome drizzle, heaviest during Sun night. Very mild (max 16°C on Mon morning, min 14°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 18°C on Wed afternoon, min 12°C on Sat morning). Winds increasing (light winds from the E on Wed afternoon, fresh winds from the N by Sat morning). | ||||||||||||||||||||
Sun 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | SW 12 | SW 14 | SW 16 | SW 16 | SSW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 | SW 19 |
Wave Graph | |||||||||||||||||||||
1738 | 1507 | 3077 | 5210 | 5598 | 2645 | 2325 | 1632 | 1108 | 1025 | 736 | 650 | 1062 | 773 | 710 | 551 | 336 | 212 | 178 | 124 | 446 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | on | on | cross-on | cross-on | cross-off | off | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross |
High Tide | 00:34AM0.55m | 12:23PM1.38m | 00:49AM0.58m | 12:54PM1.41m | 1:01AM0.62m | 1:19PM1.39m | 1:14AM0.68m | 1:39PM1.33m | 1:29AM0.76m | 1:54PM1.25m | 1:49AM0.83m | 2:05PM1.17m | 2:13AM0.89m | ||||||||
Low Tide | 7:15PM0.15m | 5:12AM0.27m | 7:39PM0.14m | 5:46AM0.18m | 7:58PM0.18m | 6:17AM0.12m | 8:10PM0.22m | 6:44AM0.10m | 8:17PM0.25m | 7:10AM0.11m | 8:21PM0.24m | 7:34AM0.15m | 8:28PM0.21m | 7:58AM0.22m | |||||||
— | — | 7:37 | — | — | 7:37 | — | — | 7:37 | — | — | 7:35 | — | — | 7:35 | — | — | 7:35 | — | — | 7:35 | |
5:49 | — | — | 5:49 | — | — | 5:50 | — | — | 5:50 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | 5:52 | |
mm | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 16 | 16 | 15 | 15 | 15 | 15 | 16 | 18 | 17 | 16 | 18 | 17 | 16 | 18 | 17 | 16 | 19 | 18 | 17 |
Feels °C | 9 | 11 | 11 | 11 | 13 | 13 | 13 | 14 | 14 | 15 | 13 | 12 | 14 | 13 | 10 | 12 | 11 | 8 | 11 | 12 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 14 | SW 16 | SW 16 | SSW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 | SW 19 |
1738 | 1507 | 3077 | 5210 | 5598 | 2645 | 2325 | 1632 | 1108 | 1025 | 736 | 650 | 1062 | 773 | 710 | 551 | 336 | 212 | 178 | 124 | 446 | |
Swell 2 Height (m) Direction Period (s) | SW 19 | SW 18 | — | — | — | — | — | — | — | — | — | SW 19 | — | — | — | NNW 4 | S 10 | — | — | SW 21 | SW 14 |
15 | 447 | — | — | — | — | — | — | — | — | — | 14 | — | — | — | 4 | 2 | — | — | 72 | 167 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 16 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 10 | — | |
Wind waves Height (m) Direction Period (s) | SW 12 | SW 17 | SW 16 | SW 16 | SW 17 | SW 16 | SW 16 | — | — | — | — | NNE 3 | — | NE 3 | N 3 | — | NNE 3 | N 3 | N 4 | N 4 | NNW 4 |
1150 | 47 | 66 | 3011 | 3161 | 68 | 64 | — | — | — | — | 4 | — | 2 | 5 | — | 1 | 11 | 9 | 15 | 54 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1626 | 1227 | 1424 | 1288 | 1049 | 648 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 402 | 402 | 564 | 649 |
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.











