Surf Forecasts:
Castles surf forecast from 13 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 0.8m 4s period and expected on Saturday (Jul 18) at 6AM.
| 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 in store.
It's a bit of a slow start across the board, to be honest. Right now, nothing is really jumping out as a good wave at Castles, or anywhere else for that matter. We're looking at a pretty flat spell for the first few days, with Monday and Tuesday offering nothing but poor conditions. The water temp is sitting at about 61°, which is pretty much normal for the time of year, so no need to worry about a wetsuit just yet.
The first real glimmer of hope comes in on Wednesday the 15th of July. The wind is going to swing around to a light offshore from the East, cleaning up the swell from the southwest. We're looking at surf around 5ft to 6ft which is a solid size for a keen surfer. The swell period is 15 seconds, so that's proper groundswell energy, and it will be packing a punch with a combined energy value of 1220. That's a lot of power for a day that otherwise looks average. Castles is a reef break, so that long-period swell will be lining up nicely there. This is the standout window, and the morning session looks best.
After that, Thursday the 16th through to the end of the first week sees the swell drop off. The wind stays mostly cross-offshore, which is okay, but the wave heights are dropping into the 4ft to 5ft range. The energy is also fading, with values dropping into the hundreds. Not really worth getting too excited about.
The second week looks like a write-off, to be honest. The wind is mostly onshore or strong cross-off, and the swell is small and messy. There's a brief pulse of size on Thursday the 24th of July, with 7ft swell from the southwest, but the wind is all over the shop, switching from cross-off to cross-shore. It's just not clean enough to recommend. The long-range forecasts are always a bit of a gamble, but this one doesn't look like it'll pay off.
So, the short story is: Wednesday morning the 15th of July is your best bet. Get there for the clean, offshore conditions and that long-period groundswell. Don't wait around for the rest of the window.
Rusty.
Short Range ForecastMostly dry. Very mild (max 19°C on Wed afternoon, min 15°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Sat afternoon, min 12°C on Fri morning). Mainly fresh winds. | ||||||||||||||||||||
Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | |||||||||||||||
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 16 | SW 16 | SSW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 16 | SW 15 | SW 16 | SW 16 | SW 14 | SW 13 | SW 13 | SW 13 | SW 19 | SW 18 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 3077 | 5210 | 5598 | 2645 | 2325 | 1632 | 1220 | 1011 | 813 | 659 | 1055 | 753 | 643 | 532 | 412 | 215 | 175 | 132 | 369 | 686 | 1129 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | cross-on | cross | cross-off | off | off | off | cross-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 | 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 | 2:16PM1.10m | 2:41AM0.91m | |||||||
Low Tide | 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 | 8:40PM0.17m | ||||||||
 | |  | |  |  | | | | | | | | | | | | |  | | | |
 | 7:37 | — | — | 7:37 | — | — | 7:37 | — | — | 7:35 | — | — | 7:35 | — | — | 7:35 | — | — | 7:35 | — | — |
 | — | 5:49 | — | — | 5:50 | — | — | 5:50 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 16 | 16 | 15 | 16 | 17 | 19 | 18 | 16 | 18 | 17 | 15 | 18 | 18 | 18 | 20 | 20 | 18 | 20 | 19 |
Feels °C | 11 | 11 | 13 | 13 | 12 | 14 | 13 | 15 | 14 | 11 | 13 | 11 | 8 | 12 | 13 | 11 | 14 | 14 | 12 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SSW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 16 | SW 15 | SW 16 | SW 16 | SW 14 | SW 13 | SW 13 | SW 13 | SW 19 | SW 18 | SW 16 |
| kJ | 3077 | 5210 | 5598 | 2645 | 2325 | 1632 | 1220 | 1011 | 813 | 659 | 1055 | 753 | 643 | 532 | 412 | 215 | 175 | 132 | 369 | 686 | 1129 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SW 18 | — | — | — | — | S 11 | S 10 | W 6 | SW 21 | SW 14 | SW 13 | — |
| kJ | — | — | — | — | — | — | — | — | — | 260 | — | — | — | — | 2 | 2 | 1 | 72 | 167 | 132 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 6 | SW 15 | W 5 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 8 | 2 | — |
Wind waves Height (m) Direction Period (s) | SW 16 | SW 16 | SW 17 | SW 16 | — | — | — | — | — | NE 3 | — | NE 3 | NNE 4 | N 3 | N 3 | N 4 | NNW 4 | N 3 | NNW 4 | NW 4 | — |
| kJ | 66 | 3011 | 3161 | 69 | — | — | — | — | — | 5 | — | 5 | 10 | 4 | 5 | 18 | 11 | 7 | 19 | 4 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1344 | 1288 | 1035 | 1035 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 402 | 178 | 0 | 402 | 1 | 0 |
Best forecast wave conditions in Nullarbor | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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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.
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