Surf Forecasts:
Flatrock surf forecast from 10 Aug 2026:
- Best quality surf: Tuesday 11 Aug, 6PM (local time) - 13ft (4.0m), 17s period, WSW swell with cross-onshore winds.
- Most powerful swell: Wednesday 12 Aug, 6AM (local time) - 16ft (5.0m), 16s period, SW swell with 12,203 kJ wave energy.
- Next surfable swell (1★+): Tuesday 11 Aug, 6PM (local time) - 13ft (4.0m), 17s period with WSW 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 Tuesday (Aug 11) at 6PM. The primary swell is predicted to be 4.0m and 17s period with a secondary swell of 3.0m and 17s. 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 5.0m 16s and forecast to arrive on Wednesday (Aug 12) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Sunday (Aug 16) at 9AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Tue 11th Aug) | 13ft (4.0m) 17s |
| Best Surf | 6PM (Tue 11th Aug) | 13ft (4.0m) 17s |
| Most Powerful | 6AM (Wed 12th Aug) | 16ft (5.0m) 16s |
Table - best surf conditions forecast for Flatrock over the next 16 days.
Short Range ForecastModerate rain (total 12mm), heaviest on Tue afternoon. Very mild (max 15°C on Tue afternoon, min 12°C on Tue afternoon). Winds decreasing (strong winds from the NNW on Tue morning, light winds from the WSW by Thu morning). | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Sat morning. Very mild (max 15°C on Thu night, min 12°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Mon 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | ||||||||||||||
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 16 | SW 16 | WSW 14 | WSW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SSW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 |
Wave Graph  | ||||||||||||||||||||
 kJ | 5896 | 3631 | 3273 | 5236 | 7975 | 12006 | 11357 | 6947 | 6564 | 5187 | 5187 | 7895 | 6545 | 4704 | 3794 | 3486 | 2525 | 2328 | 1888 | 1500 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | on | cross-on | glassy | cross-on | cross-off | off | off | off | off | cross-off | off |
High Tide | 1:39AM0.14m | 12:38PM0.60m | 1:07AM0.18m | 1:05PM0.60m | 1:06AM0.23m | 1:27PM0.58m | 1:18AM0.29m | 1:44PM0.55m | 1:37AM0.36m | 1:57PM0.50m | 2:01AM0.41m | 2:07PM0.46m | 2:27AM0.45m | |||||||
Low Tide | 8:25PM0.03m | 4:35AM0.12m | 8:22PM0.05m | 5:35AM0.07m | 8:19PM0.08m | 6:18AM0.04m | 8:14PM0.09m | 6:55AM0.02m | 8:11PM0.09m | 7:28AM0.03m | 8:12PM0.07m | 7:58AM0.05m | 8:17PM0.04m | |||||||
 |  |  |  | | |  |  | | |  | | | | | | | | | | |
 | — | — | 7:13 | — | — | 7:13 | — | — | 7:11 | — | — | 7:09 | — | — | 7:09 | — | — | 7:07 | — | — |
 | 5:52 | — | — | 5:53 | — | — | 5:54 | — | — | 5:54 | — | — | 5:55 | — | — | 5:57 | — | — | 5:58 | — |
mm | — | 2 | 1 | 3 | 5 | 1 | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — |
Temp °C | 13 | 14 | 14 | 15 | 13 | 14 | 14 | 14 | 14 | 14 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 12 |
Feels °C | 7 | 9 | 5 | 6 | 6 | 7 | 8 | 10 | 10 | 10 | 12 | 12 | 12 | 11 | 10 | 9 | 9 | 8 | 8 | 7 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | WSW 14 | SW 17 | — | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SSW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 |
| kJ | 5896 | 3631 | 3273 | 4761 | — | 12006 | 11357 | 6947 | 6564 | 5187 | 5187 | 7895 | 6545 | 4704 | 3794 | 3486 | 2525 | 2328 | 1888 | 1500 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 10 | — | S 10 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 51 | — | 51 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 15 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | WNW 7 | WSW 18 | SW 17 | SW 17 | SW 17 | — | — | — | — | — | — | — | — | — | — | E 4 | SE 10 | — |
| kJ | — | — | 627 | 5236 | 7975 | 8030 | 7582 | — | — | — | — | — | — | — | — | — | — | 17 | 120 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1099 | 151 | 624 | 692 | 692 | 1189 | 884 | 316 | 153 | 316 | 153 | 0 | 74 | 0 | 0 | 0 | 0 | 0 | 126 | 0 |
Best forecast wave conditions in Eyre Peninsula | ||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
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.
Nearest