Surf Forecasts:
Castles surf forecast from 6 Jul 2026:
- Best quality surf: Wednesday 8 Jul, 12AM (local time) - 5ft (1.6m), 16s period, SW swell with offshore winds.
- Most powerful swell: Monday 13 Jul, 12PM (local time) - 8ft (2.5m), 19s period, SW swell with 4,674 kJ wave energy.
- Next surfable swell (1★+): Tuesday 7 Jul, 6AM (local time) - 3.5ft (1.0m), 16s 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 07) at 6AM. The primary swell is predicted to be 1.0m and 16s 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 2.5m 19s and forecast to arrive on Monday (Jul 13) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 2s period and expected on Wednesday (Jul 08) at 6PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Tue 7th Jul) | 3.5ft (1.0m) 16s |
| Best Surf | 12AM (Wed 8th Jul) | 5ft (1.6m) 16s |
| Most Powerful | 12PM (Mon 13th Jul) | 8ft (2.5m) 19s |
Table - best surf conditions forecast for Castles over the next 16 days.
Updates in hr min s Forecast update imminent
Alright, let’s talk surf in feet and miles per hour, because that’s how I grew up reading it. Here’s the deal with Castles for the next couple weeks.
We open on Tuesday the 7th with a clean start. A light offshore breeze, 3-4 ft swell out of the southwest, with a long 15-16 second period. Wave energy is moderate, around 519-635. The water temp is about normal for this time of year. Good morning surf.
Wednesday the 8th is the standout of the first week. Swell builds to 5-6 ft, with a beautiful 17-second groundswell from the southwest. Offshore wind stays light, and the wave energy jumps into strong territory (1710 on Wednesday morning). The surf will be clean, powerful, and better for experienced surfers. It’s too big for beginners at this size. If you’ve got the skills, this is your day.
Thursday the 9th morning is still okay with light cross-offshore winds and 4 ft swell, but the afternoon turns messy with cross-onshore wind and the swell drops. From Friday through the weekend, it’s a disaster. Strong onshore winds from the west and southwest at 15-18 mph, and the surf gets blown out and choppy. The wave energy drops way down (313). There’s a gap of several days with nothing worth paddling for—Thursday afternoon right through Sunday.
Monday the 13th brings a big 8 ft swell from the southwest with an 18-second period. Wave energy is very strong at 4459, but the wind is directly onshore. That’s a reef break, so the long-period groundswell could have some shape, but it’s messy. Only for experts, and it’s a marginal proposition.
Then Wednesday the 15th is a return to clean. Offshore wind returns with a 5 ft swell from the southwest, 14-15 second period, and moderate wave energy (836). This is your second standout session. Clean and fun.
Thursday the 16th stays clean but the swell is a little smaller. Still rideable.
From Friday the 17th onward, it’s mostly onshore wind, lumpy seas, and poor quality. A 6 ft swell on Saturday the 18th is wrecked by 19-22 mph cross and onshore winds.
Best bets: Tuesday the 7th, Wednesday the 8th, and Wednesday the 15th. The big 8 ft swell on the 13th has potential but looks blown out. Crowds are only sometimes a problem here, so you might have it quiet.
Rusty.
Short Range ForecastMostly dry. Very mild (max 17°C on Wed afternoon, min 11°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 16°C on Fri afternoon, min 13°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Mon 13 | |||||||||||||||
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 13 | SW 15 | SW 16 | SW 16 | SW 17 | SW 16 | SW 16 | SW 15 | SW 17 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 14 | SW 14 | SW 14 | SW 18 | SW 17 |
Wave Graph  | |||||||||||||||||||||
 kJ | 183 | 519 | 635 | 1230 | 1710 | 1245 | 886 | 472 | 594 | 783 | 566 | 529 | 373 | 299 | 553 | 437 | 1836 | 1484 | 1990 | 4377 | 4043 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | off | off | off | cross-off | cross-off | cross-on | cross | cross-on | on | cross-on | on | on | on | on | on | on | on | on |
High Tide | 3:58AM0.79m | 3:48PM0.92m | 5:05AM0.77m | 3:57PM0.72m | 7:59AM0.80m | 10:15AM0.97m | 11:53PM0.50m | 11:07AM1.15m | 00:15AM0.53m | 11:48AM1.29m | 00:34AM0.55m | 12:23PM1.38m | |||||||||
Low Tide | 9:59PM0.25m | 9:32AM0.39m | 10:30PM0.33m | 10:37AM0.56m | 11:00PM0.40m | 11:37PM0.46m | 6:31PM0.33m | 6:49PM0.21m | 4:29AM0.36m | 7:15PM0.15m | 5:12AM0.27m | ||||||||||
 |  | |  |  | | | | |  |  | | | | | | | | | | | |
 | — | 7:39 | — | — | 7:39 | — | — | 7:37 | — | — | 7:37 | — | — | 7:37 | — | — | 7:37 | — | — | 7:37 | — |
 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — | — | 5:47 | — | — | 5:49 | — | — | 5:49 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 13 | 15 | 15 | 16 | 17 | 14 | 15 | 15 | 14 | 15 | 16 | 15 | 15 | 14 | 15 | 15 | 16 | 16 | 15 | 15 |
Feels °C | 8 | 9 | 11 | 11 | 13 | 14 | 10 | 15 | 13 | 14 | 11 | 12 | 12 | 10 | 9 | 10 | 10 | 11 | 13 | 12 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 15 | SW 16 | SW 16 | SW 17 | SW 16 | SW 16 | SW 15 | SW 17 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | — | — | SW 14 | SW 24 | SW 14 | SW 18 | SW 17 |
| kJ | 183 | 519 | 635 | 1230 | 1710 | 1245 | 886 | 472 | 594 | 783 | 566 | 529 | 373 | 299 | — | — | 1836 | 22 | 1990 | 4377 | 4043 |
Swell 2 Height (m) Direction Period (s) | SW 17 | — | — | — | — | — | — | SW 20 | SW 14 | W 4 | SW 4 | — | SW 4 | — | — | — | — | — | SSW 21 | — | — |
| kJ | 142 | — | — | — | — | — | — | 134 | 331 | 3 | 4 | — | 3 | — | — | — | — | — | 180 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | ESE 3 | — | — | — | — | — | — | — | SW 18 | WSW 4 | SW 4 | SW 4 | — | WSW 4 | SW 13 | SW 12 | SW 14 | SW 14 | SW 14 | SW 18 | SW 17 |
| kJ | 5 | — | — | — | — | — | — | — | 78 | 10 | 1 | 4 | — | 14 | 553 | 437 | 1238 | 1484 | 1304 | 82 | 77 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 132 | 1 | 178 | 510 | 510 | 1217 | 1219 | 1045 | 1217 | 1623 | 1035 | 940 | 648 |
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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