Surf Forecasts:
Flatrock surf forecast from 29 Jul 2026:
- Best quality surf: Thursday 30 Jul, 3AM (local time) - 8ft (2.5m), 13s period, SSW swell with cross-offshore winds.
- Most powerful swell: Sunday 2 Aug, 9PM (local time) - 10ft (3.0m), 16s period, SW swell with 4,948 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 3AM (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 3AM. 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 3.0m 16s and forecast to arrive on Sunday (Aug 02) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 8s period and expected on Saturday (Aug 01) at 3AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Thu 30th Jul) | 8ft (2.5m) 13s |
| Best Surf | 3AM (Thu 30th Jul) | 8ft (2.5m) 13s |
| Most Powerful | 9PM (Sun 2nd Aug) | 10ft (3.0m) 16s |
Table - best surf conditions forecast for Flatrock over the next 16 days.
The Lowdown
Yo, Rusty here. Let’s break down what Flatrock’s got cookin’.
Water temp is about 60°F, dead average for now. The first few days have some serious size, but the wind is gonna be a headache. The real magic is hiding in the second week.
Starting out on Wednesday, July 29th, there’s a massive 13-foot SSW swell with a super long 16-second period. That’s a ton of energy (6919), but a moderate cross-shore breeze is gonna make it lumpy. This is strictly for the big-dog experts. Too big for anyone else. By afternoon, it drops a bit to 12 feet, but the wind shifts and it gets messy.
Thursday the 30th looks way better. Swell settles to a still-chunky 8 feet from the SSW, period 13 seconds, and we get a light cross-offshore breeze. Conditions are clean. This is solid for experienced surfers, with moderate energy (2003) behind it.
Friday the 31st drops to 5 feet. The morning is clean with a cross-off breeze, but the afternoon brings a cross-onshore wind that messes with it.
Saturday the 1st and Sunday the 2nd of August are total washouts. Onshore gales will destroy the 7-8 foot SW swell. Don’t even think about it.
Monday the 3rd and Tuesday the 4th bring some hope. Monday has an 8-foot SW swell, but it’s cross-shore and a bit lumpy. Tuesday morning, the 4th, is a real sleeper. The swell drops to 6 feet from the SSW, but the wind turns light cross-offshore, making for clean waves. The energy is moderate (1306), but the size is way more manageable. This is the pick of the first week for experienced surfers wanting clean conditions.
From Wednesday the 5th through Friday the 7th, the wind picks up again, making things lumpy and messy despite the 7-foot swell.
The Big One: Circle Saturday, August 8th. This is it. A 13-foot SSW swell, huge energy (6497), but with a light cross-offshore breeze. That’s clean. It’s only for experts, but for them, this is exceptional. The long period (14-15 seconds) at a reef break like Flatrock will produce some walled-up, powerful waves. The crowd situation is sometimes an issue, but this size will keep the crowds small.
Sunday the 9th still has an 12-foot swell and a clean morning, but the afternoon gets blown out. Monday the 10th and beyond is mostly strong onshore wind and junk.
So, for experienced surfers, your best bets are Thursday, July 30th for a clean, solid session, and the champion day is Saturday, August 8th for the biggest, cleanest swell of the run.
Rusty.
Short Range ForecastMostly dry. Very mild (max 13°C on Fri morning, min 11°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Sun morning. Very mild (max 15°C on Sat afternoon, min 11°C on Sat morning). Winds decreasing (fresh winds from the N on Sat night, light winds from the ENE by Mon night). | ||||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | |||||||||||||||
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 16 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SW 14 | SW 18 | SW 17 | SW 17 | SW 16 | SW 15 | SW 15 | SW 16 | SW 14 | SW 13 | SW 12 | SSW 11 | SW 15 | SW 19 |
Wave Graph  | |||||||||||||||||||||
 kJ | 6919 | 4803 | 2820 | 1830 | 1475 | 1014 | 796 | 743 | 1974 | 2778 | 3483 | 2866 | 2293 | 2902 | 4885 | 2570 | 2275 | 1411 | 706 | 1163 | 2374 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-on | cross-off | cross | cross-on | cross | on | on | cross-on | cross | cross-on | off | cross-off | cross-on | cross-off |
High Tide | 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 | 3:05PM0.41m | ||||||||
Low Tide | 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 | 9:11AM0.11m | 9:24PM0.05m | ||||||||
 |  |  | | |  |  | |  | | | |  | | | | | | | | | |
 | 7:24 | — | — | 7:24 | — | — | 7:24 | — | — | 7:22 | — | — | 7:22 | — | — | 7:20 | — | — | 7:20 | — | — |
 | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — | — | 5:49 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 4 | — | — | — | — | — | — | — | — |
Temp °C | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 12 | 13 | 15 | 15 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 13 | 11 |
Feels °C | 7 | 7 | 8 | 10 | 9 | 8 | 9 | 9 | 8 | 5 | 9 | 9 | 6 | 6 | 6 | 10 | 9 | 10 | 8 | 10 | 7 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SW 14 | SW 18 | SW 17 | SW 17 | SW 16 | SW 15 | SW 15 | SW 16 | SW 14 | SW 13 | SW 12 | SSW 11 | SW 15 | SW 19 |
| kJ | 6919 | 4803 | 2820 | 1830 | 1475 | 1014 | 796 | 743 | 1974 | 2778 | 3483 | 2866 | 2293 | 2902 | 4885 | 2570 | 2275 | 1411 | 706 | 1163 | 2374 |
Swell 2 Height (m) Direction Period (s) | — | — | — | SSE 9 | SSE 9 | SSW 22 | SW 20 | SW 20 | SW 13 | — | — | — | — | — | — | SW 20 | SSW 18 | SW 17 | SW 16 | SW 21 | SW 14 |
| kJ | — | — | — | 173 | 177 | 45 | 198 | 552 | 591 | — | — | — | — | — | — | 97 | 221 | 439 | 477 | 454 | 612 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | SW 24 | SW 22 | SW 20 | SSE 8 | — | — | — | — | — | — | — | — | — | SW 18 | SW 22 | SW 21 | S 9 |
| kJ | — | — | — | — | 22 | 73 | 312 | 47 | — | — | — | — | — | — | — | — | — | 510 | 118 | 735 | 101 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | NNE 3 | — | SE 8 | NNW 4 | NW 6 | NW 7 | WNW 7 | — | SW 16 | — | — | — | N 3 | NNW 4 | — |
| kJ | — | — | — | — | — | — | 3 | — | 33 | 26 | 66 | 94 | 259 | — | 3269 | — | — | — | 5 | 10 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1120 | 698 | 126 | 0 | 0 | 0 | 44 | 42 | 74 | 204 | 204 | 204 | 799 | 315 | 316 | 126 | 126 | 0 | 0 | 42 | 74 |
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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