Backdoor 4 48 hour detailed Surf Forecast

Lat Long: 33.28° S 151.57° E

Issued: 3 am 21 Jul 2026 (local time)

Forecast update in hr min

Today's Backdoor 4 sea temperature is

18.7° 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 (21 Jul):

Morning surf: Morning surf (21 Jul, local time) - 5ft (1.5m), 10s period with ENE swell.
Afternoon surf: Afternoon surf (21 Jul, local time) - 4.5ft (1.3m), 10s period with ENE swell.
Evening surf: Evening surf (21 Jul, local time) - 3.5ft (1.1m), 10s period with ENE swell.

The current surf forecast for Backdoor 4 at 7AM is: 1.5m 10s primary swell from a East-northeast direction and 0.6m 11s secondary swell from a South direction (forecast issued at 03:00am July 21). The wind direction is predicted to be cross-onshore.

Time (AEST) & Date	Wave Height	Wave Period
Morning (21 Jul)	5ft (1.5m)	10s
Afternoon (21 Jul)	4.5ft (1.3m)	10s
Evening (21 Jul)	3.5ft (1.1m)	10s

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

	Short Range Forecast Mostly dry. Warm (max 20°C on Wed morning, min 8°C on Thu night). Winds increasing (light winds from the WSW on Wed morning, fresh winds from the WSW by Thu afternoon).
	Tuesday 21								Wednesday 22								Thursday 23
	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	1 AM	4 AM	7 AM	10 AM	1 PM	4 PM	7 PM	10 PM
Rating (10 max)	2	2	2	1	0	0	0	0	0	0	0	0	2	0	0	0	0	0	0	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	ENE 10	ENE 10	ENE 10	ENE 10	ENE 10	ENE 10	ENE 10	ENE 10	ENE 10	ENE 10	ENE 10	ENE 10	ENE 10	ENE 10	ENE 9	ENE 9	ENE 9	ENE 9	ENE 9	ENE 9	ENE 9	ENE 9	ENE 9	ENE 9
Wave Graph
kJ	501	482	416	363	363	294	250	245	201	269	248	248	210	172	156	156	149	119	119	116	92	92	62	62
Wind (km/h)	NNW	NW	NW	N	NE	NE	NE	N	N	NW	NW	NW	WSW	E	WNW	W	W	W	W	WSW	W	WSW	WSW	WSW
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross-on	cross-on	cross-on	on	cross-on	cross-on	cross-on	on	on	cross-on	cross-on	cross-on	cross-off	cross	cross	cross	cross	cross	cross	cross-off	cross	cross-off	cross-off	cross-off
High Tide	00:51AM1.17m					1:51PM1.29m				1:47AM1.03m				2:45PM1.31m				2:53AM0.93m				3:42PM1.32m
Low Tide				7:10AM0.31m				8:11PM0.53m				7:53AM0.39m				9:26PM0.53m				8:42AM0.45m


	—	6:52	—	—	—	—	—	—	—	6:52	—	—	—	—	—	—	—	6:50	—	—	—	—	—	—
	—	—	—	—	—	5:07	—	—	—	—	—	—	—	5:07	—	—	—	—	—	—	—	5:07	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	13	12	12	13	15	15	16	15	14	12	12	14	20	18	19	17	16	14	13	15	19	19	15	12
Feels °C	11	10	11	12	12	12	13	12	12	10	9	11	17	14	16	13	12	10	9	11	15	14	7	5
Swell 1 Height (m) Direction Period (s)	ENE 10	ENE 10	ENE 10	ENE 10	ENE 10	ENE 10	ENE 10	ENE 10	ENE 10	ENE 10	ENE 10	ENE 10	ENE 10	ENE 10	ENE 9	ENE 9	ENE 9	ENE 9	ENE 9	ENE 9	ENE 9	ENE 9	ENE 9	ENE 9
kJ	501	482	416	363	363	294	250	245	201	269	248	248	210	172	156	156	149	119	119	116	92	92	62	62
Swell 2 Height (m) Direction Period (s)	S 11	S 11	S 11	S 11	S 11	S 10	S 10	S 10	S 10	S 10	S 10	S 10	S 10	S 10	S 11	S 11	S 11	S 10	S 10	S 10	SSW 6	S 6	S 10	S 9
kJ	84	82	81	56	55	53	31	31	31	31	31	17	17	19	20	21	20	8	8	8	12	17	7	26
Swell 3 Height (m) Direction Period (s)	S 15	S 15	S 15	S 16	S 16	S 15	S 15	S 15	S 14	S 13	S 13	S 13	S 13	—	—	—	—	—	E 10	E 9	S 10	S 10	SE 8	SE 8
kJ	17	17	17	19	19	17	17	17	4	4	3	3	3	—	—	—	—	—	2	2	8	2	3	2
Wind waves Height (m) Direction Period (s)	—	—	—	—	—	ENE 3	ENE 3	NE 4	NE 5	NNW 4	—	NNW 3	—	—	—	—	WSW 3	WSW 3	WSW 3	SW 3	SW 5	SSW 6	SW 4	SSW 5
kJ	—	—	—	—	—	3	8	19	30	5	—	4	—	—	—	—	2	3	5	5	30	27	35	97
Nearest Offshore or Glassy	Soldiers Beach NSW - Newcastle	Soldiers Beach NSW - Newcastle	Soldiers Beach NSW - Newcastle	Soldiers Beach NSW - Newcastle	Pelican Beach NSW - Newcastle	Yacaaba Head-Boulders NSW - Port Macquarie	Umina Beach NSW - Newcastle	Caves Beach NSW - Newcastle	Soldiers Beach NSW - Newcastle	Soldiers Beach NSW - Newcastle	Soldiers Beach NSW - Newcastle	Soldiers Beach NSW - Newcastle	Backdoor 4 NSW - Newcastle	Redhead NSW - Newcastle	Boat Ramp NSW - Newcastle	Sunset NSW - Newcastle	Sunset NSW - Newcastle	Sunset NSW - Newcastle	Sunset NSW - Newcastle	Sunset NSW - Newcastle	Boat Ramp NSW - Newcastle	Sunset NSW - Newcastle	Wamberal Beach NSW - Newcastle	Lakes Beach NSW - Newcastle
Rating (10 max)	3	3	3	2	2	2	2	3	2	2	2	2	2	1	1	1	1	1	1	1	1	1	1	1
Distance (km)	2	2	2	2	3	117	37	20	2	2	2	2	0	32	0	2	2	2	2	2	0	2	19	3
Best forecast wave conditions in Newcastle	Crackneck	Crackneck	Crackneck	Crackneck	Little Gibber - Dark Point		Anna Bay-Morna Point	Nobbys Reef	Crackneck	Crackneck	Crackneck	Crackneck	Crackneck	Little Gibber - Dark Point	Crackneck	Crackneck	Crackneck	Crackneck	Crackneck	Crackneck	Crackneck	Moonee	Wamberal Beach	Blue Bay
Rating (10 max)	3	3	3	2	2		2	3	2	2	2	2	2	1	2	2	1	1	1	1	1	1	1	1
Best forecast wave conditions in Australia	Ethel Wreck SA - Yorke Peninsula	Ethel Wreck SA - Yorke Peninsula	Luna Park VIC - Far West	Luna Park VIC - Far West	Luna Park VIC - Far West	Luna Park VIC - Far West	Luna Park VIC - Far West	Luna Park VIC - Far West	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	Surfers Point WA - Margaret River	Bunker Bay Bommie 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	Bunker Bay Bommie WA - Margaret River	Cyclops WA - Far South	Surfers Point WA - Margaret River
Rating (10 max)	4	4	4	4	4	4	4	4	4	4	5	5	5	6	5	3	5	5	5	5	4	2	4	4
Header Global	Last Chance New Zealand	Diners Beach New Zealand	Diners Beach New Zealand	Purakaunui Bay New Zealand	Asu Indonesia	Asu Indonesia	Aganoa Beach Samoa	Benkunqut Indonesia	Chameau Mauritius	Sea Vista South Africa	Cobblestones Australia	Cobblestones Australia	Cobblestones Australia	Gas Bay Australia	Cow Bombie Australia	Supertubes Australia	Cobblestones Australia	Cathedral Rock Australia	Cathedral Rock Australia	Cobblestones Australia	Georgica Pond United States	Brak River South Africa	Benkunqut Indonesia	Dolphin Point South Africa
Rating (10 max)	5	5	5	5	4	4	4	4	4	5	5	5	5	6	5	5	5	9	9	5	5	4	4	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 (21 Jul):

Short Range Forecast

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