Backdoor 4 48 hour detailed Surf Forecast

Lat Long: 33.28° S 151.57° E

Issued: 9 am 13 Sep 2026 (local time)

Forecast update in hr min

Today's Backdoor 4 sea temperature is

17.9°C

Backdoor 4 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 Backdoor 4 today (13 Sep):

Morning surf: Morning surf (13 Sep, local time) - 3ft (0.9m), 10s period with S swell.
Afternoon surf: Afternoon surf (13 Sep, local time) - 3ft (0.9m), 11s period with S swell.
Evening surf: Evening surf (13 Sep, local time) - 5ft (1.6m), 6s period with NE swell.

The current surf forecast for Backdoor 4 at 3PM is: 0.9m 11s primary swell from a South direction and 0.3m 16s secondary swell from a South direction, 1.0m 5s secondary swell from a East-northeast direction (forecast issued at 09:00am September 13). The wind direction is predicted to be cross-onshore.

Time (AEST) & Date	Wave Height	Wave Period
Morning (13 Sep)	3ft (0.9m)	10s
Afternoon (13 Sep)	3ft (0.9m)	11s
Evening (13 Sep)	5ft (1.6m)	6s

Table - waves today at Backdoor 4. (Swell directed towards the surf break)

	Short Range Forecast Mostly dry. Warm (max 24°C on Mon morning, min 10°C on Tue night). Winds increasing (light winds from the NNW on Sun night, strong winds from the S by Tue night).
	Sunday 13						Monday 14								Tuesday 15
	7 AM	10 AM	1 PM	4 PM	7 PM	10 PM	1 AM	4 AM	7 AM	10 AM	1 PM	4 PM	7 PM	10 PM	1 AM	4 AM	7 AM	10 AM	1 PM	4 PM	7 PM	10 PM
Rating (10 max)	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0	1	0	0	0	0
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	S 10	S 10	S 11	S 11	NE 6	NE 6	NE 6	S 12	S 12	S 12	S 11	S 11	S 11	NE 6	NE 6	ENE 6	NE 6	NE 7	NE 7	NE 7	ENE 7	NE 7
Wave Graph
kJ	158	164	184	184	165	143	184	175	172	132	118	82	90	151	141	69	59	44	35	21	38	22
Wind (km/h)	NNW	NE	ENE	NE	NNE	NNE	NNW	NNW	NNW	NNE	NE	NE	NNE	N	N	NW	NW	SSE	SE	SE	S	S
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	on	cross-on	cross-on	cross-on	cross-on	on	on	on	on	cross-on	cross-on	cross-on	cross-on	on	on	cross-on	cross-on	off	cross-off	cross-off	off	off
High Tide		9:21AM1.49m				9:34PM1.38m				9:57AM1.49m					10:13PM1.25m				10:34AM1.46m
Low Tide				3:31PM0.19m				3:39AM0.19m					4:15PM0.24m				4:10AM0.28m				5:01PM0.31m


	5:56	—	—	—	—	—	—	5:54	—	—	—	—	—	—	—	5:54	—	—	—	—	—	—
	—	—	—	5:43	—	—	—	—	—	—	—	5:44	—	—	—	—	—	—	—	5:44	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	13	17	19	18	18	17	16	16	17	21	24	22	22	22	21	20	19	22	18	18	16	14
Feels °C	12	15	14	12	12	13	13	14	14	18	19	17	19	18	18	18	16	20	15	17	13	7
Swell 1 Height (m) Direction Period (s)	S 10	S 10	S 11	S 11	S 10	S 10	NE 6	NE 6	ENE 6	S 12	S 11	S 11	S 11	NE 6	NE 6	ENE 6	NE 6	NE 7	NE 7	NE 7	ENE 7	NE 7
kJ	158	164	184	184	138	136	112	75	47	132	118	82	81	109	88	69	59	44	35	21	38	22
Swell 2 Height (m) Direction Period (s)	NE 5	ENE 5	S 16	S 15	ENE 13	ENE 13	S 10	S 12	S 12	NE 6	ENE 13	ENE 12	ENE 12	S 10	S 10	S 10	S 10	S 10	S 10	S 9	S 9	E 14
kJ	23	15	47	41	17	17	138	175	172	34	16	15	15	54	50	30	30	30	29	15	14	15
Swell 3 Height (m) Direction Period (s)	S 18	S 17	ENE 13	ENE 13	ENE 13	S 18	ENE 13	ENE 13	ENE 13	ENE 13	S 19	—	E 16	E 12	E 12	E 12	E 12	NE 13	E 13	E 13	E 14	—
kJ	102	53	17	17	17	6	17	17	17	17	7	—	5	12	12	12	3	6	13	14	15	—
Wind waves Height (m) Direction Period (s)	NE 5	NE 5	ENE 5	ENE 5	NE 6	NE 6	NE 6	NE 6	NE 6	NE 6	NE 6	NE 5	NE 5	NE 6	NE 6	—	—	—	SE 2	SE 3	S 4	S 5
kJ	31	22	19	74	165	143	184	144	69	68	33	41	90	151	141	—	—	—	2	7	5	136
Nearest Offshore or Glassy	Soldiers Beach NSW - Newcastle	Pelican Beach NSW - Newcastle	Box Head NSW - Newcastle	Cudmirrah Reef NSW - South Coast	Garie Beach NSW - Illawarra	Umina Beach NSW - Newcastle	Soldiers Beach NSW - Newcastle	Soldiers Beach NSW - Newcastle	Soldiers Beach NSW - Newcastle	Soldiers Beach NSW - Newcastle	Umina Beach NSW - Newcastle	Umina Beach NSW - Newcastle	Umina Beach NSW - Newcastle	Shelley Beach NSW - Newcastle	Soldiers Beach NSW - Newcastle	Soldiers Beach NSW - Newcastle	Soldiers Beach NSW - Newcastle	Backdoor 4 NSW - Newcastle	Old Woman Island - South Side QLD - Sunshine Coast	Avoca Point NSW - Newcastle	Little Bombie NSW - Newcastle	Bendalong Beach NSW - South Coast
Rating (10 max)	2	2	1	2	1	2	2	2	2	1	1	1	1	2	2	1	1	1	1	1	1	4
Distance (km)	2	3	37	231	110	37	2	2	2	2	37	37	37	11	2	2	2	0	754	25	0	238
Best forecast wave conditions in Newcastle	Copacobana Point	Moonee	Box Head			Umina Point	Copacobana Point	Crackneck	Moonee	Forresters	Umina Point	Umina Point	Anna Bay-Morna Point	Copacobana Point	Copacobana Point	Crackneck	Crackneck	Little Bombie		Avoca Point	Little Bombie
Rating (10 max)	2	2	1			2	2	2	2	1	1	1	1	2	2	1	1	1		1	1
Best forecast wave conditions in Australia	Red Bluff WA - North West	Red Bluff WA - North West	Shipstern Bluff TAS - East Coast	Luna Park VIC - Far West	Luna Park VIC - Far West	Luna Park VIC - Far West	Cyclops WA - Far South	Shipstern Bluff TAS - East Coast	Shipstern Bluff TAS - East Coast	Boneyard NSW - Illawarra	Surfers Point WA - Margaret River	Bunker Bay Bommie WA - Margaret River	Bells Beach - Rincon VIC - Torquay	Surfers Point WA - Margaret River	Surfers Point WA - Margaret River	Surfers Point WA - Margaret River	Surfers Point WA - Margaret River	Surfers Point WA - Margaret River	Surfers Point WA - Margaret River	Supertubes WA - Margaret River	Surfers Point WA - Margaret River	Surfers Point WA - Margaret River
Rating (10 max)	4	4	4	4	4	4	4	2	2	2	6	4	1	6	6	5	5	5	5	5	5	5
Header Global	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Greenmeadows New Zealand	Papatowai New Zealand	Fish Boma South Africa	Injidup Carpark Australia	Cobblestones Australia	Sea Vista South Africa	Cloudbreak Fiji	Gas Bay Australia	Gas Bay Australia	Cintsa West South Africa	Hole-in-the-Wall South Africa	Cobblestones Australia	Cobblestones Australia	Supertubes Australia	Gas Bay Australia	Gas Bay Australia
Rating (10 max)	9	9	9	8	7	6	5	6	5	5	6	6	5	6	6	6	9	5	5	5	5	5

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

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Backdoor 4 48 hour detailed Surf Forecast

How big are the waves at Backdoor 4 today (13 Sep):

Short Range Forecast

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