Flat Rocks Beach (WA) Surf Forecast

/ WA – North West (27 breaks) / Western Australia (159 breaks) /

Australia (828 breaks) / Lat Long: (29.02° S 114.78° E)

Surf Forecasts:

Flat Rocks Beach (WA) surfForecast / WA – North West / Australia

12 Day Weather and Surf, issued 1 am Thursday 18 Sep 2025 AWST

Forecast update in hr min s Forecast update imminent

Flat Rocks Beach (WA) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Flat Rocks Beach (WA) sea temperature is 18.0° C
(Which is 1.7°C colder than average for this time of year)

Best Forecast Surf Conditions for Flat Rocks Beach (WA) this week:

The surf forecast for Flat Rocks Beach (WA) over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 22) at 2PM. The primary swell is predicted to be 1.5m and 19s period with a secondary swell of 1.4m and 14s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Flat Rocks Beach (WA) in the next 12 days are 2.5m 15s and forecast to arrive on Friday (Sep 19) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 6s period and expected on Monday (Sep 22) at 5AM.

Wave Type	Time (AWST) & Date	Wave Height & Period
Next good surf (1 star+)	2PM (Mon 22nd Sep)	5ft (1.5m) 19s
Best Surf	2PM (Mon 22nd Sep)	5ft (1.5m) 19s
Most Powerful	8PM (Fri 19th Sep)	8ft (2.5m) 15s

Table - best surf conditions forecast for Flat Rocks Beach (WA) over the next 12 days.

Updates in hr min s Forecast update imminent

12 Days Hourly

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	Short Range Forecast Mostly dry. Warm (max 20°C on Sat afternoon, min 12°C on Thu night). Mainly fresh winds.									Days 3-6 Weather Summary Mostly dry. Warm (max 30°C on Tue afternoon, min 17°C on Sun morning). Winds decreasing (fresh winds from the S on Sun afternoon, light winds from the ESE by Tue afternoon).
	Thursday 18			Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24
	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night
Rating (10 max)	1	0	3	3	1	3	3	0	2	2	0	2	3	3	3	4	4	4	3	2	4
Swell Height Map See all maps
Wave Height (m) & direction (?)	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW
Period(s) (?)	12	14	15	15	15	15	14	14	14	13	13	16	20	19	18	17	16	16	15	15	15
Wave Graph (?)
kJ (?)	778	1863	2686	2208	2832	2517	1728	1559	801	690	711	864	1092	1731	2192	1915	1446	1170	1039	1011	1204
Wind (km/h)	S	S	ESE	SE	S	SE	SE	S	ESE	E	S	ESE	ENE	ESE	ENE	NE	ESE	ENE	NE	SSW	ENE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- on	cross- on	cross- off	cross- off	cross	cross- off	cross- off	cross- on	cross- off	cross- off	cross	cross- off	off	cross- off	off	off	cross- off	off	cross- off	cross- on	off
High Tide / height (m)			12:02AM 0.38	7:59AM 0.59		10:15PM 0.40	8:43AM 0.56		10:04PM 0.44	9:23AM 0.52		10:09PM 0.49	10:00AM 0.47		10:19PM 0.53	10:35AM 0.42		10:30PM 0.57	11:07AM 0.37		10:40PM 0.60
Low Tide / height (m)		3:38PM 0.11	12:19AM 0.38		3:48PM 0.15	2:05AM 0.34		3:45PM 0.20	2:55AM 0.31		3:34PM 0.23	3:38AM 0.27		3:27PM 0.25	4:18AM 0.25		3:27PM 0.26	4:57AM 0.23		3:30PM 0.26

	Thursday 18			Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24
Sunrise	6:16	-	-	6:15	-	-	6:13	-	-	6:11	-	-	6:11	-	-	6:09	-	-	6:09	-	-
Sunset	-	6:14	-	-	6:15	-	-	6:15	-	-	6:15	-	-	6:15	-	-	6:16	-	-	6:16	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp. °C	17	17	16	17	18	17	19	20	20	24	27	25	26	29	27	26	30	29	29	31	26
Feels °C (?)	12	13	11	13	14	12	15	15	15	19	22	20	20	23	22	20	25	24	24	28	22

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Recent Eyeball Surf Reports for WA - North West

Wind Update Recent on-shore wind 5 km from Cable Beach (Broome) has fallen light (light winds from the WSW at Broome Airport). Waves cleaning up. 0.4m 3s local chop from the W with a 0.2m 9s swell from the WSW and a 0.2m 13s groundswell from the W. 3 swells combining to make bigger set waves.
1 hour 12 minutes ago Cable Beach (Broome)

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27 km away, 42 min ago

13 km/h

NNE

0.0

18.0

Air / Water (°C)

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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 12 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.