Banzai Pipeline and Backdoor 48 hour detailed Surf Forecast

Lat Long: 21.65° N 158.07° W

Issued: 7 am 04 Sep 2026 (local time)

Forecast update in hr min

Today's Banzai Pipeline and Backdoor sea temperature is

26.9°C

Banzai Pipeline and Backdoor 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 Banzai Pipeline and Backdoor today (04 Sep):

Morning surf: Morning surf (04 Sep, local time) - 0.5ft (0.1m), 12s period with SW swell.
Afternoon surf: Afternoon surf (04 Sep, local time) - 0.5ft (0.1m), 13s period with SW swell.
Evening surf: Evening surf (04 Sep, local time) - 0.5ft (0.1m), 13s period with SW swell.

The current surf forecast for Banzai Pipeline and Backdoor at 10AM is: 0.1m 12s primary swell from a Southwest direction (forecast issued at 07:00am September 04). An open ocean swell of 1.0m 14s is not directed at the surf break, a second open ocean swell of 0.3m 12s is not directed at the surf break, a second open ocean swell of 1.9m 7s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (HST) & Date	Wave Height	Wave Period
Morning (04 Sep)	0.5ft (0.1m)	12s
Afternoon (04 Sep)	0.5ft (0.1m)	13s
Evening (04 Sep)	0.5ft (0.1m)	13s

Table - waves today at Banzai Pipeline and Backdoor. (Swell directed towards the surf break)

	Short Range Forecast Light rain (total 7mm), mostly falling on Sun night. Warm (max 27°C on Sun afternoon, min 24°C on Fri night). Mainly fresh winds.
	Friday 4							Saturday 5								Sunday 6
	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)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	SW 12	SW 12	SW 12	SW 13	SW 13	SW 13	N 12	NNE 11	NNE 11	NNE 10	NNE 10	NNE 10	NNE 10	NNE 9	N 9	N 11	N 11	N 11	N 8	SW 16	N 10	N 10	NW 16
Wave Graph
kJ	6	6	6	6	7	7	10	12	23	21	20	19	18	28	14	10	2	9	11	124	8	8	10
Wind (km/h)	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	E	E	E	E	E	E	E	E	ESE	E
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	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	off	off	off
High Tide			10:44AM0.66m									11:43AM0.72m								12:26PM0.76m
Low Tide									2:10AM0.13m								3:55AM0.12m						8:18PM0.28m


	6:16	—	—	—	—	—	—	—	6:16	—	—	—	—	—	—	—	6:16	—	—	—	—	—	—
	—	—	—	—	6:45	—	—	—	—	—	—	—	6:45	—	—	—	—	—	—	—	6:44	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1	2	2
Temp °C	25	25	26	26	25	25	25	24	25	25	26	26	26	25	25	25	25	25	26	27	26	24	24
Feels °C	24	23	24	23	23	23	24	22	24	24	25	25	26	25	25	25	25	25	26	26	26	25	25
Swell 1 Height (m) Direction Period (s)	E 14	E 14	E 14	E 14	E 14	E 14	E 14	S 13	S 13	S 13	S 12	S 12	SSW 12	SSW 13	SSW 13	SSW 12	SSW 13	SSW 12	SSW 12	SSW 13	SSW 13	SSW 14	SSW 14
kJ	334	320	357	432	569	687	678	52	51	85	77	78	121	168	170	172	181	136	133	209	209	515	508
Swell 2 Height (m) Direction Period (s)	SSE 11	SSE 13	SSE 12	S 12	S 12	S 13	S 13	NNE 11	NNE 11	NNE 10	NNE 10	NNE 10	NNE 10	NNE 9	N 9	N 11	N 11	SSW 16	SSW 16	SW 16	SW 15	N 10	NW 16
kJ	24	32	30	27	27	29	50	12	23	21	20	19	18	28	14	9	2	100	162	124	229	8	10
Swell 3 Height (m) Direction Period (s)	SW 12	SW 12	SW 12	SW 13	SW 13	SW 13	N 12	S 19	SW 16	SSW 16	SSW 17	SSW 17	N 12	SSE 9	SSE 10	N 11	N 11	N 11	N 8	N 10	N 10	NW 9	SSE 10
kJ	6	6	6	6	7	7	10	7	10	26	28	29	3	8	19	10	2	9	11	8	8	3	10
Wind waves Height (m) Direction Period (s)	ENE 7	ENE 7	ENE 7	ENE 7	ENE 7	ENE 7	ENE 7	E 14	ENE 14	ENE 14	ENE 14	ENE 13	ENE 13	ENE 14	ENE 13	ENE 13	E 13	E 13	E 12	E 12	E 12	E 12	E 12
kJ	415	415	376	376	340	305	265	1832	1984	1984	1690	1765	1792	1901	1765	1893	1682	1631	1379	1334	1392	1519	1652
Nearest Offshore or Glassy	Ranches HAW - Oahu	Ranches HAW - Oahu	Ranches HAW - Oahu	Ranches HAW - Oahu	Ranches HAW - Oahu	Ranches HAW - Oahu	Ranches HAW - Oahu	Ranches HAW - Oahu	Ranches HAW - Oahu	Ranches HAW - Oahu	Yokohama Bay HAW - Oahu	Ranches HAW - Oahu	Ranches HAW - Oahu	Yokohama Bay HAW - Oahu	Yokohama Bay HAW - Oahu	Yokohama Bay HAW - Oahu	Yokohama Bay HAW - Oahu	Yokohama Bay HAW - Oahu	Yokohama Bay HAW - Oahu	Aligator Rock HAW - Oahu	Avalanche HAW - Oahu	Yokohama Bay HAW - Oahu	Yokohama Bay HAW - Oahu
Rating (10 max)	1	1	1	1	1	1	1	1	1	1	1	1	1	4	4	3	3	4	4	1	2	4	4
Distance (km)	24	24	24	24	24	24	24	24	24	24	22	24	24	22	22	22	22	22	22	3	9	22	22
Best forecast wave conditions in Oahu	Ranches	Ranches	Ranches	Ranches	Ranches	Ranches	Ranches	Ranches	Ranches	Ranches	Ranches	Ranches	Ranches	Maili Point	Bomboras	Ko Olina Resort	Ko Olina Resort	Maili Point	Maili Point	Maili Point	Ranches	Bomboras	Abalolo Reef
Rating (10 max)	1	1	1	1	1	1	1	1	1	1	1	1	1	4	4	3	3	4	4	4	2	4	4
Best forecast wave conditions in United States	Ghost Tree CAL - Monterey	Boners CAL - San Luis Obispo	Ranches HAW - Oahu	Super Tubes CAL - Ventura	Magics HAW - Big Island	The Wedge CAL - Orange County	Hilo Breakwall HAW - Big Island	Mouse Rock CAL - San Luis Obispo	The Wedge CAL - Orange County	Magics HAW - Big Island	Ranches HAW - Oahu	Super Tubes CAL - Ventura	The Wedge CAL - Orange County	Hilo Breakwall HAW - Big Island	Hilo Breakwall HAW - Big Island	Hilo Breakwall HAW - Big Island	Hilo Breakwall HAW - Big Island	Salt Creek Heroins CAL - Orange County	Salt Creek Heroins CAL - Orange County	Trestles (Lowers) CAL - Orange County	The Wedge CAL - Orange County	Boners CAL - San Luis Obispo	The Wedge CAL - Orange County
Rating (10 max)	4	3	1	2	3	3	4	4	3	3	1	2	3	4	4	4	4	4	4	4	3	4	4
Header Global	Cathedral Rock Australia	Trial Harbour Australia	Trial Harbour Australia	Dirk Hartog Island Australia	Ahijedero Mexico	Shipwreck Bay-Supertubes New Zealand	Trial Harbour Australia	Dunedin - Bobs Beach New Zealand	Dunedin - Bobs Beach New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Captains South Africa	Bells Beach - Bowl Australia	Gerickes Point South Africa	Hanga Poukura Chile	Injidup Carpark Australia	Injidup Carpark Australia	Gas Bay Australia	Gas Bay Australia	Cow Bombie Australia	Amanzimtoti South Africa	Amanzimtoti South Africa
Rating (10 max)	5	9	9	5	4	5	5	9	9	9	7	6	5	5	6	5	8	7	9	8	7	8	7

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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Banzai Pipeline and Backdoor 48 hour detailed Surf Forecast

How big are the waves at Banzai Pipeline and Backdoor today (04 Sep):

Short Range Forecast

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