Surf Forecasts:
Flatrock surf forecast from 19 Jul 2026:
- Best quality surf: Sunday 26 Jul, 12AM (local time) - 6.5ft (2.0m), 12s period, SSW swell with glassy winds.
- Most powerful swell: Thursday 23 Jul, 3PM (local time) - 13ft (4.0m), 15s period, SW swell with 7,569 kJ wave energy.
- Next surfable swell (1★+): Tuesday 21 Jul, 3PM (local time) - 6ft (1.8m), 13s period with SW swell.
Best Forecast Surf Conditions for Flatrock this week:
The surf forecast for Flatrock over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Jul 21) at 3PM. The primary swell is predicted to be 1.8m and 13s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Flatrock in the next 16 days are 4.0m 15s and forecast to arrive on Thursday (Jul 23) at 3PM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Tue 21st Jul) | 6ft (1.8m) 13s |
| Best Surf | 12AM (Sun 26th Jul) | 6.5ft (2.0m) 12s |
| Most Powerful | 3PM (Thu 23rd Jul) | 13ft (4.0m) 15s |
Table - best surf conditions forecast for Flatrock over the next 16 days.
The Lowdown
Alright, Rusty here again, giving you the same outlook in feet and miles per hour. Flatrock’s a reef, advanced only, fairly consistent, and it faces SW swell. The next couple weeks have some rough patches, but a few sweet spots.
Tuesday the 21st afternoon: glassy conditions with 6ft SW swell at 13 seconds – clean, no chop. Wave energy is moderate (974). Nice session.
Thursday the 23rd afternoon: 13ft SW groundswell, 15-second period – huge, expert-only. Energy is strong (12594). Cross-shore wind makes it a little lumpy, but still a big-wave day for the brave.
Then a long stretch of onshore slop through the rest of July.
Best bet: Saturday the 1st of August morning. Cross-offshore wind, light air, 4ft SW swell with an 18-second period – that’s a dream at a reef. Energy is moderate-high (1609). Clean lines, long gaps between sets. Crowds can pop up sometimes, so be early.
Sunday the 2nd also has clean cross-offshore winds with 4-5ft swell – still fun, but not as crisp as Saturday.
After that, onshore winds return. Mark your calendar for August 1st morning – that’s the one.
Rusty out.
Short Range ForecastLight rain (total 2mm), mostly falling on Wed morning. Very mild (max 16°C on Sun night, min 13°C on Wed morning). Winds increasing (calm on Tue afternoon, fresh winds from the SW by Wed morning). | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Thu morning. Very mild (max 14°C on Fri night, min 11°C on Wed night). Winds decreasing (fresh winds from the SSW on Wed night, light winds from the SSW by Sat afternoon). | ||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | ||||||||||||||
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 15 | SW 14 | SW 13 | SW 13 | SW 12 | SW 13 | SW 12 | SW 14 | SW 15 | SW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 1456 | 1123 | 1776 | 1608 | 1137 | 974 | 683 | 1014 | 1905 | 6237 | 4401 | 7569 | 4372 | 3487 | 2803 | 2448 | 2421 | 1939 | 1135 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | glassy | on | cross-on | cross-on | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy |
High Tide | 3:23AM0.36m | 3:02PM0.40m | 4:08AM0.37m | 3:03PM0.36m | 4:59AM0.37m | 2:50PM0.33m | 6:14AM0.37m | 1:25PM0.32m | 9:36AM0.38m | 11:03AM0.43m | |||||||||
Low Tide | 9:02AM0.15m | 9:34PM0.07m | 9:39AM0.21m | 9:51PM0.06m | 10:18AM0.26m | 10:08PM0.06m | 11:31AM0.32m | 10:24PM0.07m | 10:29PM0.09m | 9:39PM0.11m | |||||||||
 |  | | | |  |  |  |  | | | | | | |  | | | | |
 | — | 7:31 | — | — | 7:30 | — | — | 7:30 | — | — | 7:28 | — | — | 7:28 | — | — | 7:28 | — | — |
 | — | — | 5:37 | — | — | 5:38 | — | — | 5:39 | — | — | 5:39 | — | — | 5:40 | — | — | 5:42 | — |
mm | — | — | — | — | — | — | — | 1 | 1 | — | 1 | — | — | — | — | 1 | — | — | — |
Temp °C | 16 | 14 | 15 | 15 | 15 | 15 | 15 | 13 | 14 | 12 | 12 | 11 | 12 | 12 | 12 | 14 | 14 | 14 | 14 |
Feels °C | 12 | 9 | 12 | 11 | 11 | 14 | 11 | 6 | 7 | 4 | 5 | 5 | 7 | 6 | 6 | 10 | 11 | 11 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 | SW 13 | SW 12 | SW 14 | SW 15 | SW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 12 |
| kJ | 1456 | 1123 | 1776 | 1608 | 1137 | 974 | 683 | 1014 | 1905 | 6237 | 4401 | 7569 | 4372 | 3487 | 2803 | 2448 | 2421 | 1939 | 1135 |
Swell 2 Height (m) Direction Period (s) | SSW 10 | S 10 | S 10 | S 10 | — | — | SW 15 | — | — | — | SSW 18 | — | — | — | — | — | WSW 18 | — | — |
| kJ | 20 | 8 | 8 | 7 | — | — | 143 | — | — | — | 578 | — | — | — | — | — | 31 | — | — |
Swell 3 Height (m) Direction Period (s) | S 10 | — | — | — | — | — | S 14 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 52 | — | — | — | — | — | 4 | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 6 | NW 4 | — | — | — | — | WSW 3 | — | SW 12 | SSW 14 | — | SW 16 | — | — | — | — | — | — | — |
| kJ | 83 | 32 | — | — | — | — | 3 | — | 1439 | 4082 | — | 5025 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 44 | 151 | 78 | 44 | 44 | 0 | 162 | 321 | 901 | 871 | 153 | 1120 | 126 | 238 | 361 | 321 | 198 | 153 | 0 |
Best forecast wave conditions in Eyre Peninsula | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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 Flatrock 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 Flatrock Surf forecast
The above surf forecast table for Flatrock provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Flatrock can be found by selecting the local surf guide option on the grey menu. Our Flatrock 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 (Flatrock) 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 Flatrock 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 Eyre Peninsula? If you are looking for accommodation near Flatrock, camping, hotels and holiday cottages in Eyre Peninsula, consider staying in Port Lincoln which is 49 km (30 miles) away.
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