
Surf Forecasts:
Flatrock surf forecast from 28 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 12AM (local time) - 18ft (5.5m), 16s period, SSW swell with cross-shore winds.
- Most powerful swell: Wednesday 29 Jul, 3AM (local time) - 20ft (6.0m), 16s period, SSW swell with 17,373 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 12AM (local time) - 18ft (5.5m), 16s 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 Wednesday (Jul 29) at 12AM. The primary swell is predicted to be 5.5m and 16s period with a secondary swell of 4.0m and 17s. The wind is predicted to be cross-shore as the swell arrives.
The most powerful waves expected at Flatrock in the next 16 days are 6.0m 16s and forecast to arrive on Wednesday (Jul 29) at 3AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 8s period and expected on Saturday (Aug 01) at 3AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Wed 29th Jul) | 18ft (5.5m) 16s |
| Best Surf | 12AM (Wed 29th Jul) | 18ft (5.5m) 16s |
| Most Powerful | 3AM (Wed 29th Jul) | 20ft (6.0m) 16s |
Table - best surf conditions forecast for Flatrock over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's get into it. We've got a solid 16-day window, and it's all about one spot: Flatrock. This is a reef break that's not for the faint of heart, and it's about to get lit up. The early stuff is big and messy, but we've got a few golden windows that are going to be truly special.
The water temp is sitting right about average for this time of year, so nothing crazy to report on that front.
We're looking at a bit of a slow start, but things kick off proper on Wednesday, July 29th. The swell is already pumping from the SSW, but it's blown out with a cross-shore wind. The wave energy is massive, hitting 6919 (combined energy), but it's a messy 13ft at 16 seconds. That's a lot of water moving, but it's not clean. It's a bit of a write-off for surf, unless you're a madman on a gun. The afternoon stays similar, just a touch smaller.
Thursday, July 30th, is where it gets interesting. Morning brings a much cleaner setup. The swell drops to 8ft from the SSW, but the period is a solid 13 seconds, and the wind is glassy. Absolutely no wind. That's a massive positive. The reef is going to be laid out like a mirror. It's still a big wave for any beginner, and the energy is strong at 1967, but for an experienced surfer, this is the pick of the early days. The afternoon holds similar quality with a clean cross-off breeze.
Friday, July 31st, the swell drops to 5ft, but the wind is up from the NNE, making it a cross-off breeze. The wave energy drops to 937, so it's weaker, but the morning session is clean. It's not a standout, but a fun, manageable size.
Saturday, August 1st, and the forecast turns ugly. The wind is howling from the north at 22 mph, creating a lumpy cross-chop. The swell is 7ft, but the period stretches to 17 seconds. That's a very long period groundswell, which can make a beach break close out, but at a reef like Flatrock, it could be a thing of beauty if the wind wasn't murdering it. It's not. The afternoon is even worse. Forget it.
The next few days, Sunday through Tuesday, are a write-off. Strong winds, big, lumpy, blown-out surf. We're talking fresh cross-onshore winds and energy readings over 3000, but it's all just a washing machine. If you're a kitesurfer, the setup looks more interesting than for paddle surfing.
Now, check this out. Wednesday, August 5th, is a serious standout. The morning session has a 5ft SW swell, but with a very long period of 18 seconds. The wind is a light cross-off from the NE. The energy is moderate at 2389, but those long-period lines will be peeling down the reef. Then the afternoon turns glassy. Zero wind. The swell is 7ft at 17 seconds. This is the one. This is the best of the entire forecast. Glassy, long-period groundswell at a reef. This is a session that will be etched in your memory. Mark it down.
Thursday, August 6th, is a step down, with a moderate cross-shore wind killing the quality. The drop is noticeable.
But hold on. The next week has a couple more gems. Friday, August 7th, morning has a big 8ft SW swell with a 19-second period, and a clean cross-off breeze. The energy is massive at 6246. This is another serious session, but the wind is stronger, so it's a little less perfect than the 5th. Still, that's a lot of power.
Saturday, August 8th, afternoon is another glassy moment. A 8ft SW swell, 19 seconds, and glassy conditions. The reef will be a dream. This is a strong second-best option.
The final run from Sunday, August 9th, onward is a giant mess again. The wind is a gale, the swell is massive (12ft to 13ft), and it's all going to be blown to pieces. The energy readings are off the charts, but it's all for the windsurfers and kitesurfers. Not for us.
So, the takeaway: Flatrock is going to be pumping. The absolute standout is Wednesday, August 5th afternoon. The glassy, long-period swell will be a dream. The second best is the glassy session on Saturday, August 8th afternoon. The early week of the 29th and 30th is good for the brave, but the real magic is in the first week of August. Stay safe out there, and don't be a kook.
Rusty.
Short Range ForecastMostly dry. Very mild (max 13°C on Fri afternoon, min 11°C on Wed morning). Winds decreasing (fresh winds from the SSW on Tue night, calm by Thu morning). | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Sat night. Very mild (max 15°C on Sat afternoon, min 11°C on Fri night). Winds increasing (light winds from the ENE on Fri night, fresh winds from the NNW by Sat morning). | ||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | ||||||||||||||
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 16 | SSW 16 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SW 13 | SW 14 | SW 18 | SW 17 | SW 17 | SW 16 | SW 16 | SW 15 | WSW 15 | SW 14 | SW 13 | SW 13 |
Wave Graph | |||||||||||||||||||
16312 | 6919 | 4803 | 2820 | 1830 | 1475 | 1014 | 711 | 743 | 1974 | 2541 | 3442 | 2727 | 2158 | 4081 | 5227 | 3789 | 2866 | 1676 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | glassy | cross-off | cross-off | cross-off | cross-on | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross-off |
High Tide | 00:43AM0.21m | 1:04PM0.58m | 1:02AM0.25m | 1:28PM0.59m | 1:25AM0.28m | 1:50PM0.58m | 1:50AM0.32m | 2:12PM0.56m | 2:18AM0.36m | 2:33PM0.52m | 2:48AM0.39m | 2:51PM0.47m | 3:20AM0.41m | ||||||
Low Tide | 5:44AM0.06m | 8:10PM0.09m | 6:21AM0.04m | 8:19PM0.08m | 6:55AM0.02m | 8:31PM0.07m | 7:28AM0.02m | 8:45PM0.06m | 8:01AM0.04m | 8:59PM0.05m | 8:36AM0.07m | 9:12PM0.05m | |||||||
— | 7:24 | — | — | 7:24 | — | — | 7:24 | — | — | 7:22 | — | — | 7:22 | — | — | 7:20 | — | — | |
— | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — |
Temp °C | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 15 | 15 | 13 | 13 | 13 | 13 | 12 | 12 |
Feels °C | 5 | 8 | 8 | 8 | 10 | 10 | 8 | 7 | 9 | 9 | 4 | 8 | 7 | 5 | 5 | 7 | 9 | 7 | 6 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SW 13 | SW 14 | SW 18 | SW 17 | SW 17 | SW 16 | SW 16 | SW 18 | WSW 15 | SW 14 | SW 13 | SW 13 |
16312 | 6919 | 4803 | 2820 | 1830 | 1475 | 1014 | 711 | 743 | 1974 | 2541 | 3442 | 2727 | 2158 | 323 | 5227 | 3789 | 2866 | 1676 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | SSE 9 | SSE 9 | SW 22 | SW 20 | SW 20 | SE 8 | SSE 8 | — | — | SSW 19 | — | SSW 14 | SSW 14 | SSW 18 | SW 17 |
— | — | — | — | 137 | 181 | 73 | 198 | 552 | 24 | 6 | — | — | 566 | — | 2553 | 2151 | 221 | 414 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | SW 24 | SW 22 | SSE 9 | SSE 8 | SE 8 | — | — | — | — | — | — | — | — | SW 18 |
— | — | — | — | — | 22 | 73 | 25 | 40 | 23 | — | — | — | — | — | — | — | — | 510 | |
Wind waves Height (m) Direction Period (s) | SSW 17 | — | — | — | — | — | — | N 3 | NNW 4 | — | NNW 4 | NW 6 | NW 7 | W 7 | SW 15 | SW 15 | — | — | — |
8240 | — | — | — | — | — | — | 3 | 7 | — | 36 | 89 | 187 | 295 | 4081 | 4553 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1120 | 361 | 692 | 74 | 0 | 0 | 0 | 44 | 42 | 74 | 204 | 204 | 317 | 692 | 884 | 152 | 126 | 126 | 126 |
Best forecast wave conditions in Eyre Peninsula | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.










