Backdoor 48 hour detailed Surf Forecast

Lat Long: 21.67° N 158.05° W

Issued: 1 pm 13 Jul 2026 (local time)

Forecast update in hr min

Today's Backdoor sea temperature is

26.0° C

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 Backdoor today (13 Jul):

Morning surf: Morning surf (13 Jul, local time) - 1.5ft (0.5m), 15s period with SW swell.
Afternoon surf: Afternoon surf (13 Jul, local time) - 1.5ft (0.4m), 19s period with W swell.
Evening surf: Evening surf (13 Jul, local time) - 1.5ft (0.4m), 18s period with W swell.

The current surf forecast for Backdoor at 6PM is: 0.5m 14s primary swell from a Southwest direction and 0.3m 14s secondary swell from a West direction (forecast issued at 01:00pm July 13). An open ocean swell of 1.5m 8s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (HST) & Date	Wave Height	Wave Period
Morning (13 Jul)	1.5ft (0.5m)	15s
Afternoon (13 Jul)	1.5ft (0.4m)	19s
Evening (13 Jul)	1.5ft (0.4m)	18s

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

	Short Range Forecast Light rain (total 6mm), mostly falling on Tue morning. Warm (max 26°C on Thu morning, min 23°C on Mon night). Wind will be generally light.
	Mon 13					Tuesday 14								Wednesday 15								Thu 16
	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	2 AM	5 AM	8 AM
Rating (10 max)	0	1	0	1	1	0	1	1	1	2	1	2	0	0	1	1	1	1	1	1	1	1	1	1
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	SW 15	W 19	SW 14	W 18	W 18	NNE 7	W 17	NE 7	NE 7	NE 8	W 16	NE 8	W 15	W 15	W 15	W 15	W 15	W 15	W 15	W 15	W 15	W 15	W 15	W 14
Wave Graph
kJ	110	113	103	102	102	100	146	162	162	276	194	248	172	172	233	227	224	221	218	215	215	215	209	206
Wind (km/h)	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	E	E	E	E	E	E	E	E	E	ESE	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	cross-off	cross-off	cross-off	cross-off
High Tide			3:05PM0.88m			1:15AM0.34m					3:42PM0.87m				2:16AM0.36m				4:17PM0.84m				3:16AM0.37m
Low Tide					10:33PM0.31m			7:48AM-0.04m					10:57PM0.30m				8:33AM-0.00m					11:24PM0.28m


	—	—	—	—	—	—	5:56	—	—	—	—	—	—	—	5:58	—	—	—	—	—	—	—	5:58	—
	—	—	7:17	—	—	—	—	—	—	—	7:17	—	—	—	—	—	—	—	7:17	—	—	—	—	7:16
mm	—	—	—	—	—	—	—	1	1	1	—	—	—	—	—	—	—	1	1	1	—	—	—	—
Temp °C	25	25	25	24	24	24	23	24	24	25	25	24	24	24	24	24	25	25	25	24	24	24	24	25
Feels °C	24	24	25	23	23	24	23	23	23	24	24	24	24	24	24	24	25	25	25	24	24	24	24	25
Swell 1 Height (m) Direction Period (s)	SW 15	SW 15	SW 14	SW 14	SW 14	E 8	NNE 7	E 8	E 8	W 16	E 8	W 16	W 15	W 15	W 15	W 15	W 15	NNE 7	NNE 8	W 15	W 15	W 15	W 15	W 14
kJ	110	106	103	102	102	148	124	82	80	190	58	186	172	172	233	227	224	52	62	215	215	215	209	206
Swell 2 Height (m) Direction Period (s)	W 16	W 19	W 14	W 18	W 18	NNE 7	W 17	W 16	W 16	SW 14	W 16	SW 13	SW 13	SW 13	SW 17	N 7	N 7	W 15	W 15	SW 14	SW 15	SW 16	SW 13	SW 13
kJ	19	113	35	97	97	85	146	135	134	89	190	88	44	43	77	24	24	221	218	103	112	121	44	43
Swell 3 Height (m) Direction Period (s)	W 12	SW 21	W 18	SW 21	SW 18	SW 14	SW 14	SW 14	SW 14	SSW 19	SW 14	S 11	SW 17	SW 17	SW 13	SW 13	SSW 13	SSW 13	SSW 14	SSW 19	SSW 19	SW 20	SW 16	SW 16
kJ	11	17	55	18	12	100	97	95	92	37	89	2	71	75	42	42	65	63	79	36	37	15	65	65
Wind waves Height (m) Direction Period (s)	ENE 8	ENE 8	ENE 8	ENE 8	ENE 8	—	E 8	NE 7	NE 7	NE 8	NE 7	NE 8	NE 8	NE 7	ENE 7	ENE 7	ENE 7	ENE 7	E 7	ENE 7	ENE 7	ENE 7	ENE 7	ENE 7
kJ	364	319	277	277	270	—	152	162	162	276	194	248	229	223	183	181	167	160	138	207	183	183	188	181
Nearest Offshore or Glassy	Off the Wall/Insanities HAW - Oahu	Off the Wall/Insanities HAW - Oahu	Yokohama Bay HAW - Oahu	Off the Wall/Insanities HAW - Oahu	Off the Wall/Insanities HAW - Oahu	Off the Wall/Insanities HAW - Oahu	Off the Wall/Insanities HAW - Oahu	Yokohama Bay HAW - Oahu	Yokohama Bay HAW - Oahu	Yokohama Bay HAW - Oahu	Off the Wall/Insanities HAW - Oahu	Off the Wall/Insanities HAW - Oahu	Off the Wall/Insanities HAW - Oahu	Off the Wall/Insanities HAW - Oahu	Banzai Pipeline and Backdoor HAW - Oahu	Banzai Pipeline and Backdoor HAW - Oahu	Banzai Pipeline and Backdoor HAW - Oahu	Banzai Pipeline and Backdoor HAW - Oahu	Banzai Pipeline and Backdoor HAW - Oahu	Off the Wall/Insanities HAW - Oahu	Banzai Pipeline and Backdoor HAW - Oahu	Banzai Pipeline and Backdoor HAW - Oahu	Banzai Pipeline and Backdoor HAW - Oahu	Banzai Pipeline and Backdoor HAW - Oahu
Rating (10 max)	1	2	2	2	2	1	2	3	3	3	2	3	1	1	2	2	2	2	2	2	2	2	2	2
Distance (km)	2	2	24	2	2	2	2	24	24	24	2	2	2	2	2	2	2	2	2	2	2	2	2	2
Best forecast wave conditions in Oahu	Ranches	Ranches	Ranches	Ranches	Ranches	Ranches	Ranches	Barber's Point - Coast Guard Jetty	Bomboras	Point Panic	Ranches	Off the Wall/Insanities	Ranches	Ranches	Ranches	Ranches	Waimea Bay/Pinballs	Waimea Bay/Pinballs	Ranches	Ranches	Ranches	Ranches	Ranches	Ranches
Rating (10 max)	2	3	3	3	2	2	2	3	3	3	2	3	2	2	2	2	2	2	2	2	2	2	2	2
Best forecast wave conditions in United States	Ranches HAW - Oahu	Ranches HAW - Oahu	Ranches HAW - Oahu	Ranches HAW - Oahu	Mouse Rock CAL - San Luis Obispo	The Wedge CAL - Orange County	Mouse Rock CAL - San Luis Obispo	Waiaha Rivermouth / Honls HAW - Big Island	Majors Bay HAW - Kaua'i	Majors Bay HAW - Kaua'i	Mouse Rock CAL - San Luis Obispo	Boners CAL - San Luis Obispo	Boners CAL - San Luis Obispo	Boners CAL - San Luis Obispo	Magics HAW - Big Island	Waiaha Rivermouth / Honls HAW - Big Island	Waimea Bay/Pinballs HAW - Oahu	Waimea Bay/Pinballs HAW - Oahu	Ranches HAW - Oahu	Super Tubes CAL - Ventura	Boners CAL - San Luis Obispo	Boners CAL - San Luis Obispo	Boners CAL - San Luis Obispo	Ranches HAW - Oahu
Rating (10 max)	2	3	3	3	2	2	2	3	3	3	2	3	3	3	3	3	2	2	2	2	3	4	4	2
Header Global	Bancoora Australia	Buchupureo Chile	Buchupureo Chile	Puertecillo Chile	Point Roadnight Australia	Bancoora Australia	Fox River New Zealand	Cathedral Rock Australia	Cathedral Rock Australia	Cathedral Rock Australia	Asu Indonesia	Shipwreck Bay-Supertubes New Zealand	Antiques Maldives	Balnarring Point Australia	Papatowai New Zealand	Bali Village Indonesia	Dolphin Point South Africa	Dolphin Point South Africa	Boneyards South Africa	Boneyards South Africa	Luna Park Australia	Easter Reef Australia	Dunedin - Bobs Beach New Zealand	Dunedin - Bobs Beach New Zealand
Rating (10 max)	5	7	7	6	9	9	6	8	8	7	4	5	4	4	5	4	5	5	5	5	6	5	9	9

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

Latest Updates

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Backdoor 48 hour detailed Surf Forecast

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

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