
Surf Forecasts:
Castles surf forecast from 28 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 6PM (local time) - 7ft (2.1m), 14s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 29 Jul, 9AM (local time) - 8ft (2.4m), 16s period, SW swell with 2,832 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 6PM (local time) - 7ft (2.1m), 14s 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 Wednesday (Jul 29) at 6PM. The primary swell is predicted to be 2.1m and 14s 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 16s and forecast to arrive on Wednesday (Jul 29) at 9AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Sunday (Aug 02) at 3AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Wed 29th Jul) | 7ft (2.1m) 14s |
| Best Surf | 6PM (Wed 29th Jul) | 7ft (2.1m) 14s |
| Most Powerful | 9AM (Wed 29th Jul) | 8ft (2.4m) 16s |
Table - best surf conditions forecast for Castles over the next 16 days.
The Lowdown
G’day, I’m Rusty, and I’ve been staring at the charts for our local patch. We’ve got a solid run of surf shaping up, but it’s not all perfect. Let’s get into it.
We start off on Wednesday, 29 July, with a bit of a messy situation. The ocean is pushing a solid 8ft SW groundswell (combined energy 2896), but a cross wind from the S is blowing across it, making it grotty. The water’s at 60°, which is about average for this time of year. Thursday morning, 30 July, is where the first real standout comes in. The wind flicks around to the ENE, blowing off and clean, and the swell settles to a clean 5ft from the SW (13 seconds, 784 energy). The wave comment says “expect very good surf conditions.” That’s our window. Castles is a reef break, consistent, and it’s exposed to the SW swell—the direction it wants. The only catch is crowds can be a thing here sometimes, but that morning glass will be worth it. This is the best on offer early.
Friday, 31 July, hangs in there with clean cross-off winds and dropping swell—down to 3ft in the morning. It’s still surfable but nothing to howl about. Saturday, 1 August, turns into a windy mess. A strong N wind hits 25 mph, and though the swell gets a long period of 17 seconds, the combined energy hits 747, and the wind state is just dirty. Sunday, 2 August, is a write-off with cross-onshore winds and poor surf. That’s a gap of a couple of days.
Now, Monday, 3 August, is another standout. The morning is magic: a light ENE breeze at 3 mph, offshore, and the swell is a clean 5ft from the SW (14 seconds, 1077 energy). The forecast says “excellent surf conditions for experienced surfers.” That’s because 5ft being a bit solid for beginners, but for anyone who knows what they’re doing, it will be clean and lined up. A really good session.
After that, the week goes quiet. Tuesday, 4 August, the swell drops to 4ft, and the wind is messy. Wednesday, 5 August, picks up a bit with a long period 18-second swell, but the wind is fresh and cross-off, making it tricky. The energy is moderate (1053). It’s a maybe, but not a standout.
The second week is more of a promise than a certainty. Thursday, 6 August, afternoon has a big 5ft SW swell with a very long 21-second period (2228 energy) and clean cross-off winds. That’s a long period groundswell—it’ll be powerful, but at a beach or reef, it can break a bit straight. For Castles (reef), it could be a treat if the timing is right. Friday, 7 August, has a strong breeze (25 mph) making it ugly. Saturday, 8 August, and Sunday, 9 August, get big—10ft on Saturday (WSW, 10 seconds, 1578 energy) and 10ft again on Sunday (SW, 14 seconds, 3341 energy). But the wind is onshore or cross-onshore, so it’s blown out. That’s absolute expert-only territory if you’re brave, and honestly, it looks more interesting for kite surfing than paddle surfing. The energy is strong, but the quality is poor.
Monday, 10 August, stays big and messy with 8ft. Tuesday, 11 August, has a 6ft SW swell with a 19-second period (2310 energy) but cross winds. Wednesday, 12 August, has a near gale (34 mph) and rain. The final days, 12 and 13 August, are all onshore and poor.
So, the two standouts: Thursday morning, 30 July, for the clean glass and solid 5ft, and Monday morning, 3 August, for the same in excellent conditions. Keep your eyes on those.
Rusty.
Short Range ForecastMostly dry. Very mild (max 17°C on Fri afternoon, min 12°C on Thu morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Sat afternoon, min 11°C on Mon night). Winds decreasing (fresh winds from the N on Sat morning, light winds from the ESE by Sun night). | ||||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | |||||||||||||||
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 15 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 14 | SW 18 | SW 17 | SW 17 | SW 16 | SW 15 | SW 15 | SW 16 | SW 14 | SW 13 | SW 13 | SW 12 | SW 15 | SW 20 |
Wave Graph | |||||||||||||||||||||
2832 | 2027 | 1197 | 784 | 581 | 424 | 347 | 331 | 307 | 742 | 1107 | 1029 | 831 | 1140 | 1622 | 1077 | 852 | 633 | 383 | 284 | 380 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-on | cross-on | cross | off | cross | off | cross-off | cross-on | off |
High Tide | 12:39PM1.36m | 00:47AM0.84m | 1:00PM1.41m | 1:08AM0.91m | 1:22PM1.42m | 1:30AM0.97m | 1:44PM1.40m | 1:55AM1.02m | 2:06PM1.33m | 2:21AM1.04m | 2:27PM1.22m | 2:48AM1.04m | 2:45PM1.07m | 3:17AM1.01m | |||||||
Low Tide | 7:16PM0.11m | 6:24AM0.06m | 7:33PM0.07m | 6:50AM0.01m | 7:50PM0.04m | 7:16AM-0.00m | 8:08PM0.03m | 7:44AM0.02m | 8:27PM0.04m | 8:13AM0.09m | 8:45PM0.08m | 8:43AM0.19m | 9:00PM0.13m | ||||||||
7:30 | — | — | 7:28 | — | — | 7:28 | — | — | 7:26 | — | — | 7:26 | — | — | 7:26 | — | — | 7:24 | — | — | |
— | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:02 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 14 | 13 | 14 | 14 | 13 | 15 | 17 | 16 | 16 | 19 | 18 | 14 | 14 | 14 | 14 | 14 | 13 | 15 | 16 | 15 |
Feels °C | 9 | 9 | 10 | 10 | 10 | 9 | 10 | 13 | 10 | 8 | 13 | 11 | 9 | 8 | 10 | 11 | 9 | 9 | 11 | 13 | 9 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 14 | SW 14 | SW 17 | SW 17 | SW 16 | SW 15 | — | SW 16 | SW 14 | SW 13 | SW 13 | SW 12 | SW 15 | SW 15 |
2832 | 2027 | 1197 | 784 | 581 | 424 | 347 | 331 | 218 | 742 | 1107 | 1029 | 831 | — | 1622 | 1077 | 852 | 633 | 383 | 284 | 370 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | SW 22 | SW 21 | SW 20 | SW 18 | S 8 | — | — | — | — | — | — | — | SW 18 | SW 24 | SW 10 | SW 20 |
— | — | — | — | — | 19 | 71 | 239 | 307 | 5 | — | — | — | — | — | — | — | 12 | 22 | 102 | 380 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | SW 21 | S 9 | — | — | — | — | — | — | — | — | — | — | ESE 4 | SW 22 | S 9 |
— | — | — | — | — | — | 110 | 39 | — | — | — | — | — | — | — | — | — | — | 6 | 163 | 78 | |
Wind waves Height (m) Direction Period (s) | SW 16 | SW 15 | — | — | — | — | NE 2 | — | NE 3 | N 4 | NW 4 | N 4 | WNW 5 | SW 15 | — | — | — | ESE 3 | NE 3 | SW 22 | — |
64 | 55 | — | — | — | — | 1 | — | 3 | 19 | 7 | 14 | 36 | 1140 | — | — | — | 7 | 1 | 118 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 1052 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 564 | 564 | 564 | 940 | 1045 | 1 | 0 | 153 | 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.










