Surf Forecasts:
Flatrock surf forecast from 22 Jul 2026:
- Best quality surf: Tuesday 28 Jul, 9AM (local time) - 8ft (2.5m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Thursday 23 Jul, 6PM (local time) - 13ft (4.0m), 15s period, SW swell with 6,872 kJ wave energy.
- Next surfable swell (1★+): Monday 27 Jul, 9PM (local time) - 6ft (1.9m), 14s 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 Monday (Jul 27) at 9PM. The primary swell is predicted to be 1.9m and 14s period with a secondary swell of 0.1m and 10s. 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 4.0m 15s and forecast to arrive on Thursday (Jul 23) at 6PM. 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 (Mon 27th Jul) | 6ft (1.9m) 14s |
| Best Surf | 9AM (Tue 28th Jul) | 8ft (2.5m) 16s |
| Most Powerful | 6PM (Thu 23rd Jul) | 13ft (4.0m) 15s |
Table - best surf conditions forecast for Flatrock over the next 16 days.
The Lowdown
Alright, let’s talk about Flatrock. It’s a reef break, faces the south-west, and for the first week it’s a bit of a dud.
We’re looking at a big stretch of nothing from Wednesday the 22nd through Monday the 27th. The wind is mostly cross-on or cross-shore, blowing fresh, and the water is lumpy and choppy. There’s swell, but the conditions are just poor. The wave energy is moderate to strong (1190 to 1647), but it’s all wind-slop. On Friday 24th afternoon the wind is onshore, and it’s still only marginal. Not much to get excited about.
The first real day to circle is Tuesday the 28th. The swell is a solid 8ft out of the SW, with a 15-16 second period – that’s a proper groundswell, lots of power. The wind is cross-off in the morning, turning to a clean offshore in the afternoon. The combined energy is strong (3040-3068). The notes say “excellent surf conditions for experienced surfers,” and that’s the truth. At 8ft, this is strictly for the advanced crew. The reef will handle the long period nicely, giving you some lined-up, hollow waves. The water temperature is 60°F, which is normal for this time of year.
Wednesday the 29th and Thursday the 30th are still good, with a steady 7ft to 8ft SSW swell, and offshore/cross-off winds keeping it clean. The energy stays strong (1471 to 2760). It’s a bit smaller than Tuesday, but still excellent. Tuesday 28th afternoon is the pick, with the best wind and the most consistent big sets.
After that, the surf drops. Friday 31st has a 4ft SSW swell with a long 16-second period, but it’s a cross-off, not pure offshore. It’s cleaner, but smaller. From Saturday 1st August, the wind kicks back up, starting with a strong, messy cross-on and a 8ft swell, making it a mess. The following days see another big pulse – 10ft to 13ft swell – but with strong onshore winds, until Monday 3rd August. On that Monday, the swell is predicted to be 13ft to 18ft, with massive energy over 21,000, but the wind is howling onshore. The notes say it’s too big for this break. That’s a day for the experts to watch from the shore.
So, the standout is Tuesday 28th July. Get it while it’s big, clean, and powerful. After that, it’s a waiting game.
Rusty
Short Range ForecastSome drizzle, heaviest during Wed night. Very mild (max 14°C on Wed morning, min 11°C on Thu afternoon). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Sat afternoon. Very mild (max 15°C on Mon afternoon, min 12°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | |||||||||||||||
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) | SW 13 | SW 12 | SW 14 | SW 14 | SW 15 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 13 | SSW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 13 | WSW 13 | SW 16 | SW 16 | SW 15 | SSW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1190 | 1131 | 5810 | 5682 | 6691 | 4920 | 4136 | 3431 | 2216 | 1573 | 1407 | 1047 | 781 | 710 | 722 | 1099 | 1444 | 1787 | 3040 | 3045 | 3302 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | cross | cross | cross-on | on | cross-on | on | on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-off | cross-off | off | cross-off |
High Tide | 2:50PM0.33m | 6:14AM0.37m | 1:25PM0.32m | 9:36AM0.38m | 11:03AM0.43m | 11:41AM0.48m | 00:33AM0.15m | 12:12PM0.52m | 00:30AM0.18m | 12:39PM0.56m | 00:43AM0.21m | ||||||||||
Low Tide | 10:18AM0.26m | 10:08PM0.06m | 11:31AM0.32m | 10:24PM0.07m | 10:29PM0.09m | 9:39PM0.11m | 8:23PM0.11m | 3:47AM0.13m | 8:04PM0.10m | 4:59AM0.10m | 8:03PM0.09m | ||||||||||
 |  |  | | |  | | |  | |  | |  | | | | | | |  | | |
 | 7:30 | — | — | 7:28 | — | — | 7:28 | — | — | 7:28 | — | — | 7:26 | — | — | 7:26 | — | — | 7:26 | — | — |
 | — | 5:39 | — | — | 5:39 | — | — | 5:40 | — | — | 5:42 | — | — | 5:42 | — | — | 5:43 | — | — | 5:44 | — |
mm | — | — | 1 | — | — | — | — | — | — | — | 2 | 3 | — | — | — | — | — | — | — | 11 | 7 |
Temp °C | 14 | 14 | 12 | 13 | 11 | 12 | 12 | 13 | 12 | 13 | 13 | 14 | 13 | 13 | 13 | 13 | 15 | 14 | 14 | 11 | 14 |
Feels °C | 7 | 8 | 6 | 7 | 4 | 6 | 7 | 8 | 7 | 9 | 8 | 11 | 9 | 7 | 9 | 6 | 11 | 10 | 9 | 8 | 7 |
Swell 1 Height (m) Direction Period (s) | — | SW 12 | SW 14 | SW 14 | SW 15 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 13 | SSW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 13 | WSW 13 | SW 16 | SW 16 | SW 15 | SSW 14 |
| kJ | — | 1131 | 5810 | 5682 | 6691 | 4920 | 4136 | 3431 | 2216 | 1573 | 1407 | 1047 | 781 | 710 | 722 | 1099 | 1444 | 1787 | 3040 | 3045 | 3302 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SW 18 | — | SW 16 | SSE 11 | S 11 | SW 15 | S 10 | S 10 | WNW 8 | — | SW 24 | SW 22 |
| kJ | — | — | — | — | — | — | — | — | — | 12 | — | 67 | 24 | 2 | 229 | 8 | 7 | 186 | — | 23 | 76 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | SSE 11 | S 10 | — | — | S 9 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 40 | 8 | — | — | 2 | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 13 | — | SSW 14 | SW 14 | SW 15 | — | — | — | — | — | — | — | NW 3 | NW 4 | NW 5 | NNW 4 | NW 6 | — | — | — | — |
| kJ | 1190 | — | 3632 | 3716 | 4650 | — | — | — | — | — | — | — | 3 | 11 | 41 | 35 | 196 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 322 | 871 | 153 | 871 | 901 | 152 | 126 | 361 | 238 | 164 | 153 | 42 | 42 | 162 | 44 | 44 | 151 | 44 | 0 | 0 | 126 |
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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