
Surf Forecasts:
Flatrock surf forecast from 18 Jul 2026:
- Best quality surf: Friday 24 Jul, 9PM (local time) - 8ft (2.5m), 14s period, SSW swell with glassy winds.
- Most powerful swell: Thursday 23 Jul, 12PM (local time) - 10ft (3.0m), 16s period, SW swell with 5,154 kJ wave energy.
- Next surfable swell (1★+): Friday 24 Jul, 9PM (local time) - 8ft (2.5m), 14s 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 Friday (Jul 24) at 9PM. The primary swell is predicted to be 2.5m and 14s 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 3.0m 16s and forecast to arrive on Thursday (Jul 23) at 12PM. 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+) | 9PM (Fri 24th Jul) | 8ft (2.5m) 14s |
| Best Surf | 9PM (Fri 24th Jul) | 8ft (2.5m) 14s |
| Most Powerful | 12PM (Thu 23rd Jul) | 10ft (3.0m) 16s |
Table - best surf conditions forecast for Flatrock over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s cooking at Flatrock over the next couple of weeks.
Right off the bat, we’re in a bit of a holding pattern. The first few days are a write-off with messy, choppy conditions and onshore winds. The waiting game starts now. From Sunday the 19th through to Wednesday the 23rd, it’s a real battle – the wind is all over the place and the waves are chopped up, offering nothing worth your time. The waiting game starts now.
The first real flicker of hope shows up on Thursday, 30 July. The morning has a clean 6 ft SSW swell with a light cross-offshore breeze. The energy is moderate (2229), and the conditions are described as clean. This is for experienced surfers, but it’s the first sign of quality. The swell period is a solid 14 seconds, so there’s some proper groundswell running, but at a reef break like Flatrock, that long period should wrap in nicely. Be ready for a dawn patrol session.
The real standout, though, is the Friday, 31 July. The afternoon session is the pick of the entire forecast. The wind drops to dead calm – glassy conditions – with a 5 ft SSW swell. The energy is moderate (850), but the complete lack of wind makes up for it. The word is “glassy,” and that’s the kind of magic that Flatrock can deliver. The swell direction is a solid match for the optimum, and the consistency is fairly consistent. This is the one to circle on the calendar. You’ll want to be in the water.
Then, into the first week of August, the swell holds. Saturday, 1 August, has a glassy 3 ft SW swell in the afternoon. It’s small but clean. Then Sunday, 2 August, the morning pulls in a 4 ft SSW swell with a very long 20-second period. That’s proper groundswell, and the energy is picking up (1657). A clean cross-off breeze makes it stand out. And Monday, 3 August, the morning session has a 5 ft SW swell with a 16-second period, clean conditions, and moderate energy (1539). The second week is looking a lot more promising, but it’s still a little way out, so keep an eye on the forecasts.
The water temperature is about average for the time of year.
So, to sum it up: the first week is a write-off for paddling, but if you’re a kite surfer, some of those windy, lumpy days in the middle of the week might get you going. For the rest of us, the real window opens on the 30th, with the 31st being the absolute best day for a glassy, clean session at Flatrock. The second week has some solid potential, too.
Rusty signing off.
Short Range ForecastMostly dry. Very mild (max 16°C on Sat night, min 13°C on Sat night). Mainly fresh winds. | Days 5-7 Weather SummarySome drizzle, heaviest during Tue night. Very mild (max 15°C on Tue night, min 11°C on Thu night). Winds decreasing (fresh winds from the SW on Tue night, light winds from the SSW by Thu night). | ||||||||||||||||||
Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | ||||||||||||||
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 13 | SW 19 | SW 18 | SW 16 | SW 15 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 | SW 13 | SW 12 | SW 14 | SW 14 | SW 16 | SW 15 | SW 14 | SSW 14 | SSW 14 |
Wave Graph | |||||||||||||||||||
363 | 303 | 1227 | 1591 | 1377 | 1776 | 1608 | 1137 | 825 | 734 | 1568 | 1347 | 4762 | 3060 | 5154 | 3720 | 2125 | 2121 | 2378 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross | cross | cross-on | cross | cross | cross-on | on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | on | glassy |
High Tide | 2:43AM0.33m | 2:54PM0.44m | 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 | ||||||||
Low Tide | 8:26AM0.09m | 9:21PM0.09m | 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 | ||||||||
— | 7:31 | — | — | 7:31 | — | — | 7:30 | — | — | 7:30 | — | — | 7:28 | — | — | 7:28 | — | — | |
— | — | 5:37 | — | — | 5:37 | — | — | 5:38 | — | — | 5:39 | — | — | 5:39 | — | — | 5:40 | — | |
mm | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 13 | 16 | 16 | 14 | 15 | 15 | 15 | 15 | 15 | 13 | 13 | 12 | 12 | 12 | 12 | 11 | 11 | 11 |
Feels °C | 12 | 7 | 12 | 12 | 9 | 11 | 12 | 12 | 12 | 11 | 6 | 6 | 5 | 6 | 7 | 8 | 8 | 7 | 9 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 12 | SW 18 | SW 16 | SW 15 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 | SW 13 | SW 14 | SW 14 | SW 14 | SW 16 | SW 15 | SW 14 | SSW 14 | SSW 14 |
363 | 240 | 1227 | 1591 | 1377 | 1776 | 1608 | 1137 | 825 | 734 | 984 | 384 | 4762 | 3060 | 5154 | 3720 | 2125 | 2121 | 2378 | |
Swell 2 Height (m) Direction Period (s) | WNW 6 | SW 19 | S 10 | SSW 10 | S 10 | S 10 | S 10 | — | — | SW 15 | — | — | — | SW 18 | — | — | — | — | — |
23 | 303 | 55 | 20 | 8 | 8 | 7 | — | — | 255 | — | — | — | 1263 | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | SSW 21 | SW 15 | — | SSW 10 | — | — | — | — | — | S 14 | — | — | — | — | — | — | — | — | — |
45 | 33 | — | 34 | — | — | — | — | — | 4 | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | NW 4 | NW 6 | NW 7 | NW 5 | — | — | — | NW 4 | — | SW 13 | SW 12 | SW 14 | — | — | — | — | — | — |
— | 35 | 75 | 97 | 60 | — | — | — | 6 | — | 1568 | 1347 | 3107 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 44 | 44 | 44 | 44 | 74 | 78 | 44 | 44 | 151 | 44 | 881 | 894 | 884 | 153 | 198 | 89 | 42 | 153 | 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.










