
Surf Forecasts:
Flatrock surf forecast from 12 Jul 2026:
- Best quality surf: Monday 13 Jul, 3AM (local time) - 16ft (5.0m), 16s period, SW swell with onshore winds.
- Most powerful swell: Tuesday 14 Jul, 12AM (local time) - 18ft (5.5m), 17s period, SW swell with 15,888 kJ wave energy.
- Next surfable swell (1★+): Monday 13 Jul, 3AM (local time) - 16ft (5.0m), 16s 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 13) at 3AM. The primary swell is predicted to be 5.0m and 16s period with a secondary swell of 4.0m and 16s. The wind is predicted to be onshore as the swell arrives.
The most powerful waves expected at Flatrock in the next 16 days are 5.5m 17s and forecast to arrive on Tuesday (Jul 14) at 12AM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Mon 13th Jul) | 16ft (5.0m) 16s |
| Best Surf | 3AM (Mon 13th Jul) | 16ft (5.0m) 16s |
| Most Powerful | 12AM (Tue 14th Jul) | 18ft (5.5m) 17s |
Table - best surf conditions forecast for Flatrock over the next 16 days.
Alright, Rusty here. Let's get into it.
First up, we're looking at a pretty solid run of swell here at Flatrock, but it's a classic case of too much of a good thing at the start. We've got a massive pulse of SW groundswell rolling in, but the wind is going to be a problem, and the size will be a genuine hazard for most.
The first surfable opportunity is a bit of a wait. We've got no good options through Sunday and Monday. The swell is just too big, with wind howling straight onshore, making it a complete mess. You'd be mad to paddle out Sunday morning with 12 ft of SW swell and a 25 mph WSW wind destroying it. The combined energy is a massive 3324, but it's totally wasted.
Monday, 13th July, is a real shame. The morning sees a 16 ft SW groundswell with a 16-second period, giving a combined energy of 21709, which is incredibly powerful. The wording says "wind and tide favorable, but the swell is predicted to be too big for this break." Word to the wise: that's not a session for anyone but the most elite, and even then, it's a gamble. Monday afternoon drops to 13 ft but the wind is still on, so it's still a no-go. Tuesday, 14th July, is more of the same – another 16 ft pulse in the morning with a cross-onshore wind. It's just too much power for this setup.
We finally get a window on Wednesday, 15th July. The swell has dropped to a much more manageable 8 ft from the SW. Now, pay attention. The morning has a light cross-offshore breeze from the NE, and the afternoon turns glassy. That's right, glassy. If you are an experienced surfer, Wednesday afternoon is your day. The combined energy is still a decent 2612, and with 15-second periods, you're getting long, powerful lines that will wrap perfectly around this reef. This is the standout of the first week.
Thursday, 16th July, is a step down to the 7 ft range with a 14-second period. The morning is clean with a cross-offshore breeze, but the notes say "marginal," so it's a good option but not the highlight. Friday, 17th July, is also in the marginal camp with cleaner winds but a drop in size.
We then hit a lull from Saturday, 18th July, through to Sunday, 19th July. The wind is messy, the swell is small and choppy. It's a write-off.
Monday, 20th July, sees a new pulse of 12 ft of SW swell, but the wind is onshore and cross-onshore, so it's a messy, powerful bounce. Not a great prospect.
The next real standout is on Tuesday, 21st July. The swell is down to 6 ft from the SW, but the wind is offshore from the E. Combined energy is 1173, so it's a moderate push, but with 13-second period and clean conditions, this will be a fun, punchy session for the crew. The morning is the go.
We get a little bump in size on Wednesday, 22nd July, with 8 ft from the SSW, but the wind is cross-shore, so it's a bit choppy. Thursday, 23rd July, is a drop-off in size with clean cross-offshore wind, but it's a smaller, weaker swell.
Then we get the real cherry on top. Friday, 24th July, is another cracker. A 6 ft swell from the SW with a 17-second period and a clean cross-offshore wind. The combined energy is a very healthy 3585. The afternoon is the pick of the day. Saturday, 25th July, is also excellent, with a 10 ft SW swell and a 16-second period, clean in the morning with a cross-offshore breeze. The combined energy is 4470, so it's a powerful, clean groundswell. This is the second standout of the forecast period.
The final few days from Sunday, 26th July, to Monday, 27th July, are back to "marginal" or "poor" conditions with messy cross-shore and cross-onshore winds. It's a fade out.
So, to wrap up: If you're an experienced surfer, block out Wednesday, 15th July, for the glassy afternoon session. And for the second week, the Friday, 24th July, afternoon and Saturday, 25th July, morning are the absolute standouts. The break is exposed and consistent, so it will be working, but it's an advanced reef, so don't be a hero if you're not ready for it.
That's the story from out here.
Rusty
Short Range ForecastLight rain (total 3mm), mostly falling on Mon night. Very mild (max 15°C on Sun morning, min 13°C on Tue night). Winds decreasing (fresh winds from the WSW on Sun morning, light winds from the SE by Tue night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 15°C on Thu morning, min 12°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | |||||||||||||||
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 12 | SW 13 | SW 16 | SW 16 | SW 16 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SW 13 | SW 13 | SW 21 |
Wave Graph | |||||||||||||||||||||
3278 | 3765 | 7353 | 11700 | 7954 | 15888 | 11624 | 5998 | 4356 | 2913 | 2612 | 2004 | 1581 | 3417 | 2658 | 2314 | 1526 | 862 | 503 | 386 | 368 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | cross-on | cross-on | cross-off | cross-off | glassy | cross-off | cross-off | cross-on | cross-off | cross-off | cross-on | cross-off | cross | cross | cross |
High Tide | 11:46AM0.57m | 1:08AM0.10m | 12:29PM0.61m | 00:54AM0.11m | 1:07PM0.63m | 00:57AM0.13m | 1:39PM0.62m | 1:10AM0.18m | 2:06PM0.59m | 1:34AM0.23m | 2:27PM0.54m | 2:06AM0.29m | 2:42PM0.49m | 2:43AM0.33m | |||||||
Low Tide | 8:44PM0.05m | 9:00PM0.06m | 4:44AM0.06m | 9:13PM0.08m | 5:40AM0.03m | 9:17PM0.11m | 6:27AM0.02m | 9:15PM0.13m | 7:10AM0.03m | 9:13PM0.13m | 7:49AM0.05m | 9:14PM0.12m | |||||||||
7:33 | — | — | 7:33 | — | — | 7:33 | — | — | 7:33 | — | — | 7:33 | — | — | 7:31 | — | — | 7:31 | — | — | |
— | 5:32 | — | — | 5:34 | — | — | 5:35 | — | — | 5:35 | — | — | 5:36 | — | — | 5:36 | — | — | 5:37 | — | |
mm | — | — | — | — | — | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 13 | 15 | 15 | 14 | 17 | 16 |
Feels °C | 7 | 8 | 9 | 8 | 8 | 9 | 11 | 12 | 12 | 13 | 13 | 12 | 12 | 12 | 12 | 8 | 12 | 11 | 6 | 12 | 8 |
Swell 1 Height (m) Direction Period (s) | SSW 22 | SW 20 | SW 16 | SW 16 | SW 16 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 |
46 | 186 | 7353 | 11700 | 7954 | 15888 | 11624 | 5998 | 4356 | 2913 | 2612 | 2004 | 1581 | 3417 | 2658 | 2314 | 1526 | 862 | 503 | 386 | 217 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | SW 19 | — | — | — | — | — | — | — | SW 22 | SSW 18 | S 12 | SSE 11 | SSE 11 | SSE 10 | SE 10 | — | SW 24 | W 7 |
— | — | — | 2530 | — | — | — | — | — | — | — | 18 | 864 | 69 | 40 | 22 | 10 | 4 | — | 22 | 70 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | S 12 | — | — | — | — | — | — | — | SW 21 |
— | — | — | — | — | — | — | — | — | — | — | — | 47 | — | — | — | — | — | — | — | 368 | |
Wind waves Height (m) Direction Period (s) | SW 12 | SW 13 | — | SW 16 | — | SW 17 | SW 16 | — | — | — | — | — | N 3 | — | — | — | — | NW 6 | NNW 5 | NW 6 | N 4 |
3278 | 3765 | — | 7479 | — | 8646 | 7037 | — | — | — | — | — | 8 | — | — | — | — | 16 | 56 | 94 | 47 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1339 | 1419 | 871 | 1189 | 1511 | 884 | 316 | 316 | 0 | 0 | 0 | 0 | 42 | 42 | 44 | 44 | 42 | 44 | 44 | 44 | 305 |
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.










