Surf Forecasts:
Flatrock surf forecast from 24 Jul 2026:
- Best quality surf: Saturday 1 Aug, 12AM (local time) - 8ft (2.5m), 18s period, SW swell with cross-offshore winds.
- Most powerful swell: Saturday 1 Aug, 9AM (local time) - 11ft (3.5m), 20s period, SSW swell with 10,326 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 12AM (local time) - 8ft (2.5m), 13s period with SSW 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 Thursday (Jul 30) at 12AM. The primary swell is predicted to be 2.5m and 13s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Flatrock in the next 16 days are 3.5m 20s and forecast to arrive on Saturday (Aug 01) at 9AM. 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+) | 12AM (Thu 30th Jul) | 8ft (2.5m) 13s |
| Best Surf | 12AM (Sat 1st Aug) | 8ft (2.5m) 18s |
| Most Powerful | 9AM (Sat 1st Aug) | 11ft (3.5m) 20s |
Table - best surf conditions forecast for Flatrock over the next 16 days.
The Lowdown
Alright, Rusty here, checkin’ out Flatrock for the next couple of weeks. Got some big swell rollin’ in, but the wind’s gonna make you work for it.
Water temp’s about 60°F, dead average for the season, so no worries there.
First few days are a bust. Saturday and Sunday have decent wave height, but that cross-onshore wind is messin’ it up, and the conditions are poor. Energy’s high (4082 on Saturday morning), but it’s choppy junk.
Monday and Tuesday get worse – strong winds, near gale force, and the swell’s up past 10ft, but it’s blown out. Not worth it.
Wednesday the 29th is still rough, but the wind goes cross-shore with a light breeze. Swell’s around 11-12ft from the SSW with a 15-second period – that’s real groundswell, massive energy (4766), but it’s still marginal for quality. Advanced only.
Then we get a clean window. Thursday the 30th morning – the wind goes light and cross-offshore from the SE, and we’ve got a 7ft SSW swell with a 13-second period. Energy’s strong (1536), and the conditions are described as excellent for experienced surfers. This is your first stand-out. Glassy, clean, and that reef will be shapin’ up. Crowds are possible, so get out there early.
Friday the 31st morning is another clean one – light NNE wind, cross-off, with a 6ft SSW swell and a long 14-second period. Smaller but still clean. Good for a session.
Then it goes ugly again. From Saturday the 1st of August through Tuesday the 6th, it’s mostly blown out or onshore winds. Even though the swell is massive – that Saturday morning has 13ft from the SSW with a 20-second period and energy over 10000 (10326) – the wind ruins it. Expert territory only, and honestly, it’d be a better day for kite surfers than paddlers.
Wednesday the 5th and Thursday the 6th are still onshore and messy. No go.
Next chance is Saturday the 8th morning – a 10ft SW swell with a 16-second period, moderate cross-shore wind. It’s marginal, but energy’s decent (4189). Then Sunday the 9th afternoon looks like a real beast – a 13ft SW swell with a 19-second period, energy over 10000 (10377), and a moderate cross-shore breeze. That’s the long-range hype day, but it’s over a week out, so don’t book your flights just yet. If it cleans up, that’ll be the best day for experts.
So the call is: Thursday 30th July and Friday 31st July mornings are your best bets for clean, solid surf. After that, there’s a long dry stretch until the 8th and 9th of August, which have potential if the wind plays ball. The rest is a washout. Stay patient.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Sat morning. Very mild (max 15°C on Sat morning, min 13°C on Sun night). Winds increasing (light winds from the WNW on Sat night, near gales from the NW by Mon morning). | Days 4-6 Weather SummaryMostly dry. Very mild (max 13°C on Tue morning, min 11°C on Tue night). Winds decreasing (fresh winds from the S on Tue night, calm by Thu morning). | ||||||||||||||||||||
Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | |||||||||||||||
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) | SSW 13 | SW 12 | SSW 12 | SW 11 | SW 12 | SW 12 | WNW 8 | WSW 12 | SW 13 | WSW 14 | SW 14 | SW 15 | SSW 15 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SW 13 | SSW 14 | SSW 14 | SW 18 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2422 | 1920 | 988 | 754 | 851 | 425 | 605 | 2571 | 2419 | 4568 | 2927 | 4032 | 4648 | 3200 | 2197 | 1497 | 1198 | 880 | 1143 | 1447 | 3869 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | on | cross-on | cross-on | cross-on | cross | cross | cross | cross-off | cross-off | cross-on | off | cross-off | cross-on | cross-off |
High Tide | 11:03AM0.43m | 11:41AM0.48m | 00:33AM0.15m | 12:12PM0.52m | 00:30AM0.18m | 12:39PM0.56m | 00:43AM0.21m | 1:04PM0.58m | 1:02AM0.25m | 1:28PM0.59m | 1:25AM0.28m | 1:50PM0.58m | 1:50AM0.32m | ||||||||
Low Tide | 9:39PM0.11m | 8:23PM0.11m | 3:47AM0.13m | 8:04PM0.10m | 4:59AM0.10m | 8:03PM0.09m | 5:44AM0.06m | 8:10PM0.09m | 6:21AM0.04m | 8:19PM0.08m | 6:55AM0.02m | 8:31PM0.07m | |||||||||
 |  |  |  | |  |  | | | |  | | | |  | | | | | |  | |
 | 7:28 | — | — | 7:26 | — | — | 7:26 | — | — | 7:26 | — | — | 7:24 | — | — | 7:24 | — | — | 7:24 | — | — |
 | — | 5:42 | — | — | 5:42 | — | — | 5:43 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — |
mm | 2 | — | 1 | — | — | — | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 15 | 14 | 14 | 14 | 15 | 14 | 14 | 13 | 13 | 12 | 11 | 12 | 12 | 12 | 12 | 12 | 11 | 12 | 12 |
Feels °C | 12 | 11 | 12 | 12 | 10 | 9 | 4 | 5 | 7 | 7 | 7 | 5 | 7 | 8 | 8 | 9 | 9 | 9 | 7 | 9 | 9 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SW 12 | SSW 12 | SW 11 | SW 12 | SW 12 | SW 10 | S 10 | SW 13 | WSW 14 | SW 14 | SW 15 | SSW 15 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SW 13 | SSW 14 | SSW 14 | SW 18 |
| kJ | 2422 | 1920 | 988 | 754 | 851 | 425 | 369 | 8 | 2419 | 4568 | 2927 | 4032 | 4648 | 3200 | 2197 | 1497 | 1198 | 880 | 1143 | 1447 | 3869 |
Swell 2 Height (m) Direction Period (s) | SW 18 | — | SW 16 | SSE 11 | S 11 | SW 15 | S 10 | — | SW 15 | — | WSW 13 | — | SW 22 | SW 19 | — | S 26 | SSW 24 | SW 22 | SW 20 | SW 20 | — |
| kJ | 12 | — | 67 | 43 | 2 | 183 | 8 | — | 734 | — | 1490 | — | 118 | 96 | — | 13 | 55 | 229 | 586 | 1111 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | SSE 11 | S 10 | — | — | S 9 | — | — | — | — | — | — | SW 26 | S 13 | S 13 | — | — | — |
| kJ | — | — | — | — | 40 | 9 | — | — | 2 | — | — | — | — | — | — | 26 | 3 | 3 | — | — | — |
Wind waves Height (m) Direction Period (s) | SSW 13 | SSW 13 | — | — | — | NW 5 | WNW 8 | WSW 12 | — | SW 15 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 1648 | 1407 | — | — | — | 73 | 605 | 2571 | — | 2863 | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 153 | 871 | 153 | 42 | 42 | 44 | 320 | 799 | 692 | 884 | 1365 | 153 | 126 | 153 | 0 | 0 | 126 | 0 | 0 | 42 | 0 |
Best forecast wave conditions in Eyre Peninsula | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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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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