Gnaraloo 48 hour detailed Surf Forecast

Lat Long: 23.76° S 113.54° E

Issued: 1 am 20 Sep 2026 (local time)

Forecast update in hr min

Today's Gnaraloo sea temperature is

22.1°C

Gnaraloo surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Surf Forecasts:

How big are the waves at Gnaraloo today (20 Sep):

Morning surf: Morning surf (20 Sep, local time) - 5.5ft (1.7m), 14s period with WSW swell.
Afternoon surf: Afternoon surf (20 Sep, local time) - 5ft (1.5m), 13s period with WSW swell.
Evening surf: Evening surf (20 Sep, local time) - 4.5ft (1.3m), 13s period with WSW swell.

The current surf forecast for Gnaraloo at 10AM is: 1.7m 14s primary swell from a West-southwest direction (forecast issued at 01:00am September 20). An open ocean swell of 0.7m 3s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 4.

Time (AWST) & Date	Wave Height	Wave Period
Morning (20 Sep)	5.5ft (1.7m)	14s
Afternoon (20 Sep)	5ft (1.5m)	13s
Evening (20 Sep)	4.5ft (1.3m)	13s

Table - waves today at Gnaraloo. (Swell directed towards the surf break)

	Short Range Forecast Mostly dry. Warm (max 25°C on Tue morning, min 16°C on Sun morning). Mainly strong winds.
	Sunday 20								Monday 21								Tuesday 22
	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM
Rating (10 max)	2	2	3	3	2	0	1	0	0	1	0	2	1	1	1	2	2	2	2	3	1	0	0	1
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	WSW 14	WSW 14	WSW 14	WSW 13	WSW 13	WSW 13	WSW 13	WSW 13	WSW 12	WSW 12	WSW 13	WSW 13	SW 12	WSW 16	WSW 16	WSW 16	WSW 16	WSW 16	WSW 16	WSW 15	WSW 15	WSW 15	WSW 14	WSW 14
Wave Graph
kJ	1569	1241	1214	1074	905	623	522	426	413	355	378	465	359	848	962	1041	1041	1169	1241	1079	917	706	565	557
Wind (km/h)	S	SSE	SSE	SSE	SSW	SSW	S	S	S	SSE	S	SSW	SSW	SSW	SSW	S	S	S	S	S	SSW	SSW	SSW	S
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross-off	cross-off	off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off
High Tide		2:18AM1.03m				4:46PM0.55m				3:10AM0.95m								4:58AM0.89m						10:27PM0.74m
Low Tide				10:30AM0.44m			6:06PM0.55m						1:11PM0.43m									2:12PM0.39m


	—	6:18	—	—	—	—	—	—	—	6:16	—	—	—	—	—	—	—	6:16	—	—	—	—	—	—
	—	—	—	—	—	6:20	—	—	—	—	—	—	—	6:21	—	—	—	—	—	—	—	6:21	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	18	16	16	21	24	22	20	19	19	18	19	24	24	24	21	20	20	19	20	25	25	24	21	20
Feels °C	13	11	10	16	20	15	15	14	15	15	16	21	19	19	17	16	17	16	16	21	20	18	16	16
Swell 1 Height (m) Direction Period (s)	WSW 14	WSW 14	WSW 14	WSW 13	WSW 13	WSW 13	WSW 13	WSW 13	WSW 12	WSW 12	WSW 13	WSW 13	WSW 16	WSW 16	WSW 16	WSW 16	WSW 16	WSW 16	WSW 16	WSW 15	WSW 15	WSW 15	WSW 14	WSW 14
kJ	1569	1241	1214	1074	905	623	522	426	413	355	378	465	359	848	962	1041	1041	1169	1241	1079	917	706	565	557
Swell 2 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	W 10	WSW 16	W 18	W 17	W 9	W 9	—	—	—	—	—	—	—	—	—	—
kJ	—	—	—	—	—	—	—	—	2	53	56	220	2	2	—	—	—	—	—	—	—	—	—	—
Swell 3 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	W 10	—	—	—	—	—	—	—	—	—	—	—	—	—	—
kJ	—	—	—	—	—	—	—	—	—	2	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Wind waves Height (m) Direction Period (s)	S 4	S 4	SSE 3	—	—	SSW 4	SSW 4	SSW 4	SSW 4	SSW 6	SSW 6	—	SW 12	SW 4	SSW 5	SSW 4	SSW 6	—	—	SSE 3	—	SSW 4	SSW 4	SSW 5
kJ	14	18	10	—	—	17	42	35	26	36	29	—	325	28	41	28	34	—	—	2	—	32	40	55
Nearest Offshore or Glassy	Blue Holes WA - North West	Blue Holes WA - North West	Blue Holes WA - North West	Lighthouse Bombie WA - North West	Cathedral Rock WA - Rottnest Island	Cathedral Rock WA - Rottnest Island	Ledge Point WA - Perth City	Explosives (Geraldton Lighthouse) WA - North West	Jakes WA - North West	Blue Holes WA - North West	Blue Holes WA - North West	Explosives (Geraldton Lighthouse) WA - North West	Bunbury The Wall WA - Perth South	Bunbury The Wall WA - Perth South	Bunbury The groyne WA - Perth South	Drummonds WA - North West	Jakes WA - North West	Jakes WA - North West	Coronation Beach WA - North West	Cozies and Geeries WA - Perth City	Bunbury The Wall WA - Perth South	The Quarries WA - Margaret River	Boneyards WA - Margaret River	Watermans WA - Perth City
Rating (10 max)	4	4	4	5	3	3	4	3	4	4	4	4	4	4	3	4	4	4	4	4	3	3	3	4
Distance (km)	445	445	445	216	937	937	820	567	446	445	445	567	1081	1081	1081	557	446	446	543	1001	1081	1096	1098	924
Best forecast wave conditions in North West WA	Greenough River Mouth	Port Denison	Port Denison	Lighthouse Bombie				Port Denison	Port Denison	Port Denison	Port Denison	Explosives (Geraldton Lighthouse)				Port Denison	Port Denison	Port Denison	Port Denison
Rating (10 max)	4	4	4	5				4	4	4	4	4				4	4	4	4
Best forecast wave conditions in Australia	Luna Park VIC - Far West	Remarkable Caves TAS - East Coast	Remarkable Caves TAS - East Coast	Conto Springs WA - Margaret River	Conto Springs WA - Margaret River	Conto Springs WA - Margaret River	Surfers Point WA - Margaret River	Surfers Point WA - Margaret River	Cyclops WA - Far South	Cyclops WA - Far South	Cyclops WA - Far South	Cyclops WA - Far South	Ethel Wreck SA - Yorke Peninsula	Left Point VIC - Phillip Island	Blacknose Point VIC - Far West	Easter Reef VIC - Far West	Luna Park VIC - Far West	Luna Park VIC - Far West	Quarantine VIC - Mornington Peninsula	Quarantine VIC - Mornington Peninsula	Daly Heads SA - Yorke Peninsula	Trial Harbour TAS - West Coast	Luna Park VIC - Far West	Luna Park VIC - Far West
Rating (10 max)	5	4	4	5	5	5	6	6	5	5	5	5	5	4	6	8	8	9	5	6	4	9	8	6
Header Global	Luna Park Australia	Asu Indonesia	Asu Indonesia	Asu Indonesia	Nine Mile New Zealand	Papatowai New Zealand	Papatowai New Zealand	Shipwrecks Bay-Peaks New Zealand	Shipwrecks Bay-Peaks New Zealand	Shipwreck Bay-Supertubes New Zealand	Cyclops Australia	Cyclops Australia	Ethel Wreck Australia	Shipwrecks Bay-Peaks New Zealand	Papatowai New Zealand	Easter Reef Australia	Easter Reef Australia	Easter Reef Australia	Easter Reef Australia	Quarantine Australia	Dunedin - Bobs Beach New Zealand	Trial Harbour Australia	Trial Harbour Australia	Papatowai New Zealand
Rating (10 max)	5	4	4	4	9	9	9	7	8	8	5	5	5	5	5	8	8	9	9	6	7	9	9	8

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

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Gnaraloo 48 hour detailed Surf Forecast

How big are the waves at Gnaraloo today (20 Sep):

Short Range Forecast

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