Surf Forecasts:
Flat Rocks Beach (WA) surf forecast from 8 Sep 2026:
- Best quality surf: Thursday 10 Sep, 2AM (local time) - 6ft (1.8m), 15s period, SW swell with offshore winds.
- Most powerful swell: Tuesday 15 Sep, 5AM (local time) - 8ft (2.5m), 15s period, SW swell with 2,722 kJ wave energy.
- Next surfable swell (1★+): Thursday 10 Sep, 2AM (local time) - 6ft (1.8m), 15s period with SW swell.
Best Forecast Surf Conditions for Flat Rocks Beach (WA) this week:
The surf forecast for Flat Rocks Beach (WA) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 10) at 2AM. The primary swell is predicted to be 1.8m and 15s period with a secondary swell of 0.1m and 26s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Flat Rocks Beach (WA) in the next 16 days are 2.5m 15s and forecast to arrive on Tuesday (Sep 15) at 5AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Wednesday (Sep 09) at 8AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Thu 10th Sep) | 6ft (1.8m) 15s |
| Best Surf | 2AM (Thu 10th Sep) | 6ft (1.8m) 15s |
| Most Powerful | 5AM (Tue 15th Sep) | 8ft (2.5m) 15s |
Table - best surf conditions forecast for Flat Rocks Beach (WA) over the next 16 days.
Short Range ForecastMostly dry. Warm (max 22°C on Thu afternoon, min 12°C on Wed morning). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Mon morning, min 13°C on Sun night). Winds increasing (calm on Sat night, fresh winds from the SSE by Mon night). | ||||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | |||||||||||||||
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 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 19 | SW 18 | SW 16 | SW 16 | SW 16 | SW 14 | SW 15 | SW 16 | SW 14 | SW 14 | SW 15 | SW 15 | SW 15 | SW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2087 | 1675 | 1418 | 871 | 757 | 623 | 614 | 945 | 2393 | 1651 | 1297 | 1164 | 1196 | 1262 | 1532 | 1572 | 1918 | 1933 | 2525 | 2208 | 1647 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | off | off | off | cross-on | cross-on | cross-on | on | on | cross-off | cross | cross-on | cross-off | cross | cross-on | cross | cross-on | cross-on | cross |
High Tide | 8:08AM0.66m | 10:43PM0.38m | 9:00AM0.62m | 10:30PM0.42m | 9:46AM0.56m | 10:37PM0.48m | 10:27AM0.49m | 10:50PM0.54m | 11:04AM0.41m | 11:06PM0.59m | 11:36AM0.34m | 11:24PM0.62m | 11:51AM0.28m | 11:41PM0.62m | |||||||
Low Tide | 4:12PM0.10m | 1:55AM0.34m | 4:19PM0.16m | 3:02AM0.30m | 4:11PM0.22m | 3:58AM0.27m | 3:56PM0.25m | 4:49AM0.25m | 3:48PM0.26m | 5:39AM0.25m | 3:45PM0.25m | 6:32AM0.26m | 3:44PM0.23m | ||||||||
 |  |  | |  | | | | | | | | | | | | | | | |  | |
 | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | 6:22 | — | — | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — |
 | — | 6:09 | — | — | 6:09 | — | — | 6:10 | — | — | 6:10 | — | — | 6:12 | — | — | 6:12 | — | — | 6:13 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 21 | 19 | 18 | 22 | 21 | 22 | 20 | 19 | 19 | 19 | 18 | 18 | 19 | 18 | 20 | 20 | 18 | 18 | 18 | 17 |
Feels °C | 11 | 14 | 13 | 12 | 18 | 17 | 20 | 16 | 18 | 19 | 17 | 17 | 17 | 18 | 16 | 17 | 15 | 13 | 14 | 14 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SW 18 | SW 16 | SW 16 | SW 16 | SW 14 | SW 15 | SW 16 | SW 14 | — | SW 15 | SW 15 | SW 15 | SW 15 |
| kJ | 2087 | 1675 | 1418 | 871 | 757 | 623 | 614 | 598 | 2393 | 1651 | 1297 | 1164 | 1196 | 1262 | 1532 | 1572 | — | 1933 | 2525 | 2208 | 1647 |
Swell 2 Height (m) Direction Period (s) | — | — | SW 26 | SW 24 | SW 24 | SW 22 | SW 20 | SW 19 | — | — | WSW 5 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 26 | 90 | 142 | 290 | 400 | 945 | — | — | 11 | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | E 4 | ESE 4 | E 4 | E 3 | — | ENE 3 | — | WNW 4 | — | — | — | — | — | — | S 4 | — | SW 14 | SSW 6 | — | — | — |
| kJ | 10 | 7 | 9 | 5 | — | 6 | — | 20 | — | — | — | — | — | — | 8 | — | 1918 | 129 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 345 | 216 | 0 | 28 | 0 | 0 | 220 | 592 | 700 | 353 | 720 | 0 | 22 | 720 | 22 | 32 | 484 | 290 | 484 | 2007 | 484 |
Best forecast wave conditions in North West WA | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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Information about the Flat Rocks Beach (WA) Surf forecast
The above surf forecast table for Flat Rocks Beach (WA) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Flat Rocks Beach (WA) can be found by selecting the local surf guide option on the grey menu. Our Flat Rocks Beach (WA) 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 (Flat Rocks Beach (WA)) 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 Flat Rocks Beach (WA) 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.
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