
Surf Forecasts:
Castles surf forecast from 4 Jul 2026:
- Best quality surf: Sunday 5 Jul, 3AM (local time) - 4.5ft (1.4m), 15s period, SW swell with offshore winds.
- Most powerful swell: Sunday 5 Jul, 9AM (local time) - 6ft (1.9m), 17s period, SW swell with 2,191 kJ wave energy.
- Next surfable swell (1★+): Sunday 5 Jul, 12AM (local time) - 4.5ft (1.4m), 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 Sunday (Jul 05) at 12AM. The primary swell is predicted to be 1.4m and 14s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Castles in the next 16 days are 1.9m 17s and forecast to arrive on Sunday (Jul 05) at 9AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Monday (Jul 06) at 9PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sun 5th Jul) | 4.5ft (1.4m) 14s |
| Best Surf | 3AM (Sun 5th Jul) | 4.5ft (1.4m) 15s |
| Most Powerful | 9AM (Sun 5th Jul) | 6ft (1.9m) 17s |
Table - best surf conditions forecast for Castles over the next 16 days.
Updates in hr min s Forecast update imminent
Alright, Rusty here. Let’s get into it.
We’ve got a solid block of surf coming up at Castles, starting this Sunday morning, July 5th. The ocean’s been working, and this spot will be firing with a clean 6 ft SW groundswell rolling in at a very long 17 seconds. The wind is light offshore from the ENE at 12 mph, which is textbook for Castles. This is prime, powerful stuff – the wave energy is strong (2191) and the sets will have some real welly behind them. This is pure reef-grinding quality, but with this size and period, it’s for experienced surfers only. Beginners, stay on the sand for this one. The water temp is hugging the seasonal average, nothing unusual there.
Sunday afternoon keeps the dream alive: still 6 ft from the SW, 16-second period, winds lightening to 9 mph from the same ENE offshore direction. Another session of excellence, but again, this is serious reef surfing.
Monday the 6th is a step down. The swell drops to 4 ft and the wind swings, turning cross-offshore. The energy is way down to 536, and overall it’s marginal. Not worth messing with.
Tuesday the 7th is better. Morning brings a clean 4 ft SW groundswell with 15-second period and offshore wind. It’s not pumping but it’s clean and fun (525 energy). The afternoon is similar with a little more period, worth a look.
Wednesday the 8th is a highlight. The swell bumps back up to 6 ft from the SW, 17-second period, with light cross-off winds. The energy is strong again (1710), the sets will be long and lined up – this is a standout session for experienced surfers. The reef will be working beautifully.
Thursday the 9th fades to 4 ft with cross-off wind in the morning, but the afternoon gets messy with rain and a cross-on wind.
Friday the 10th is marginal with cross and cross-on wind, small swell around 4-4 ft. Not your day.
Saturday the 11th is a write-off. Onshore winds screaming at 19 mph, poor quality, 5 ft lumpy slop. No go.
Sunday the 12th sees the swell back to 7 ft, but it’s all onshore and messy. Avoid.
Monday the 13th: morning has 5 ft with cross winds (1418 energy) – okay, but the afternoon is massive: 8 ft at 20 seconds from the SW, energy through the roof at 4600. That is a huge, powerful swell, but the wind is cross-on and marginal. Only for very experienced surfers on the reef, and even then, it’s a beast.
Tuesday the 14th to Wednesday the 15th is a mix of 6-6 ft SW swell but with onshore or cross-on wind. Not ideal.
Thursday the 16th morning is a sneaky good one: 4 ft SW, 14 seconds, but with glassy conditions. Perfect texture. This is a clean little session for those who want smooth waves and no wind hassle.
After that, the surf mostly goes flat or junky until the 19th. On Sunday the 19th of July, the ocean roars back. A massive 8 ft SW groundswell at 17 seconds, energy at 6647, with cross-shore winds. This is a huge, powerful swell. It’s going to be big, raw, and demanding – again, experts only. The reef will have some serious slabs breaking.
Overall, the standout sessions are Sunday morning July 5th, and Wednesday morning July 8th. Thursday morning July 16th is a quieter but beautiful glassy option.
Rusty, signing out.
Short Range ForecastMostly dry. Very mild (max 16°C on Sat night, min 11°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Thu afternoon. Very mild (max 17°C on Wed afternoon, min 12°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | Sat 11 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | SW 14 | SW 17 | SW 16 | SW 16 | SW 14 | SW 14 | SW 13 | SW 15 | SW 16 | SW 16 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 16 | SW 14 | SW 14 | WSW 14 | SW 13 | SW 12 |
Wave Graph | |||||||||||||||||||||
799 | 2191 | 1631 | 1087 | 536 | 390 | 183 | 525 | 635 | 1137 | 1710 | 1230 | 875 | 472 | 472 | 875 | 614 | 507 | 814 | 892 | 773 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | glassy | cross | cross-on | cross-on | on | cross-on |
High Tide | 2:35AM0.83m | 2:52PM1.23m | 3:12AM0.82m | 3:21PM1.09m | 3:58AM0.79m | 3:48PM0.92m | 5:05AM0.77m | 3:57PM0.72m | 7:59AM0.80m | 10:15AM0.97m | 11:53PM0.50m | 11:07AM1.15m | |||||||||
Low Tide | 8:15AM0.16m | 9:29PM0.20m | 8:50AM0.26m | 9:59PM0.25m | 9:32AM0.39m | 10:30PM0.33m | 10:37AM0.56m | 11:00PM0.40m | 11:37PM0.46m | 6:31PM0.33m | |||||||||||
— | 7:39 | — | — | 7:39 | — | — | 7:39 | — | — | 7:39 | — | — | 7:37 | — | — | 7:37 | — | — | 7:37 | — | |
— | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — | — | 5:47 | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | 2 | 1 | — |
Temp °C | 16 | 14 | 16 | 15 | 13 | 15 | 14 | 14 | 15 | 15 | 15 | 17 | 14 | 15 | 15 | 14 | 15 | 16 | 15 | 15 | 14 |
Feels °C | 11 | 9 | 11 | 10 | 9 | 10 | 9 | 11 | 12 | 12 | 12 | 15 | 11 | 14 | 13 | 13 | 11 | 12 | 9 | 9 | 6 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 17 | SW 16 | SW 16 | SW 14 | SW 14 | SW 13 | SW 15 | SW 16 | SW 16 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 16 | SW 14 | SW 14 | — | — | — |
799 | 2191 | 1631 | 1087 | 536 | 390 | 183 | 525 | 635 | 1137 | 1710 | 1230 | 875 | 472 | 472 | 875 | 614 | 507 | — | — | — | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | SW 17 | — | — | SSE 10 | — | — | — | — | SW 18 | — | — | — | — | — | — |
— | — | — | — | — | — | 142 | — | — | 36 | — | — | — | — | 203 | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | E 3 | — | — | — | NE 3 | — | ESE 4 | — | — | — | — | — | — | — | — | — | — | W 3 | WSW 14 | SW 13 | SW 12 |
5 | — | — | — | 2 | — | 10 | — | — | — | — | — | — | — | — | — | — | 2 | 814 | 892 | 773 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 132 | 0 | 1 | 501 | 553 | 1228 | 1245 |
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.











