Surf Forecasts:
Flatrock surf forecast from 7 Aug 2026:
- Best quality surf: Sunday 9 Aug, 6PM (local time) - 11ft (3.5m), 19s period, SW swell with cross-onshore winds.
- Most powerful swell: Wednesday 12 Aug, 9PM (local time) - 18ft (5.5m), 16s period, SW swell with 15,703 kJ wave energy.
- Next surfable swell (1★+): Sunday 9 Aug, 6PM (local time) - 11ft (3.5m), 19s 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 Sunday (Aug 09) at 6PM. The primary swell is predicted to be 3.5m and 19s period with a secondary swell of 3.0m and 13s. Another secondary swell of 2.5m and 19s is also forecast. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Flatrock in the next 16 days are 5.5m 16s and forecast to arrive on Wednesday (Aug 12) 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 0.3m 6s period and expected on Sunday (Aug 09) at 6AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Sun 9th Aug) | 11ft (3.5m) 19s |
| Best Surf | 6PM (Sun 9th Aug) | 11ft (3.5m) 19s |
| Most Powerful | 9PM (Wed 12th Aug) | 18ft (5.5m) 16s |
Table - best surf conditions forecast for Flatrock over the next 16 days.
Short Range ForecastHeavy rain (total 31mm), heaviest during Sun morning. Very mild (max 16°C on Sat morning, min 12°C on Sun afternoon). Winds increasing (moderate winds from the NNW on Sat morning, near gales from the SSW by Sun night). | Days 5-7 Weather SummaryModerate rain (total 14mm), heaviest on Tue afternoon. Very mild (max 15°C on Thu morning, min 10°C on Tue afternoon). Winds decreasing (near gales from the NNW on Tue morning, moderate winds from the W by Thu afternoon). | ||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | ||||||||||||||
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 16 | SW 16 | SW 15 | SW 14 | SW 16 | WSW 15 | SW 19 | SW 17 | SW 16 | SW 16 | WSW 14 | SW 18 | SW 16 | SW 18 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 |
Wave Graph  | |||||||||||||||||||
 kJ | 2825 | 2768 | 2178 | 1945 | 1929 | 4580 | 12093 | 8698 | 6394 | 3455 | 3078 | 2316 | 8466 | 9982 | 9449 | 14712 | 7073 | 5404 | 5085 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross | cross | on | cross-on | cross-on | on | cross-on | cross | cross-on | cross-on | on | cross-on | on | on | on | on |
High Tide | 10:26AM0.43m | 11:28AM0.50m | 12:06PM0.56m | 1:39AM0.14m | 12:38PM0.60m | 1:07AM0.18m | 1:05PM0.60m | 1:06AM0.23m | 1:27PM0.58m | 1:18AM0.29m | |||||||||
Low Tide | 8:51PM0.03m | 8:33PM0.03m | 8:25PM0.03m | 4:35AM0.12m | 8:22PM0.05m | 5:35AM0.07m | 8:19PM0.08m | 6:18AM0.04m | 8:14PM0.09m | ||||||||||
 |  |  |  |  | |  |  | | | | | | |  |  | | | | |
 | — | 7:16 | — | — | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — | 7:13 | — | — | 7:11 | — | — |
 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:53 | — | — | 5:54 | — | — | 5:54 | — |
mm | — | — | 3 | 10 | 9 | 8 | 1 | — | — | 1 | — | 9 | 2 | 2 | — | — | — | — | — |
Temp °C | 14 | 16 | 16 | 14 | 13 | 14 | 14 | 12 | 13 | 14 | 14 | 11 | 13 | 14 | 14 | 14 | 15 | 15 | 15 |
Feels °C | 9 | 11 | 11 | 7 | 7 | 8 | 4 | 4 | 7 | 7 | 4 | 2 | 3 | 6 | 6 | 9 | 11 | 11 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 15 | SW 14 | SW 16 | SW 20 | — | — | SW 16 | SW 16 | SW 14 | SW 18 | — | — | — | SW 16 | SW 16 | SW 15 | SW 15 |
| kJ | 2825 | 2768 | 2178 | 1945 | 1929 | 1584 | — | — | 6394 | 3455 | 2053 | 2316 | — | — | — | 14712 | 7073 | 5404 | 5085 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | SW 20 | — | — | SSE 7 | SSE 7 | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 2334 | — | — | 140 | 26 | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 5 | NNW 5 | NW 4 | NNW 6 | NW 6 | WSW 15 | SW 19 | SW 17 | — | NNW 4 | WSW 14 | W 8 | SW 16 | SW 18 | SW 17 | SW 16 | — | — | — |
| kJ | 44 | 33 | 20 | 108 | 128 | 4580 | 12093 | 8698 | — | 11 | 3078 | 898 | 8466 | 9982 | 9449 | 7317 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 44 | 42 | 204 | 204 | 204 | 204 | 523 | 742 | 901 | 316 | 799 | 889 | 698 | 884 | 1351 | 884 | 162 | 871 | 189 |
Best forecast wave conditions in Eyre Peninsula | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Flatrock surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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