Waimanu Bay 48 hour detailed Surf Forecast

Lat Long: 20.15° N 155.64° W

Issued: 1 am 13 Sep 2026 (local time)

Forecast update in hr min

Today's Waimanu Bay sea temperature is

27.5°C

Waimanu Bay 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 Waimanu Bay today (13 Sep):

Morning surf: Morning surf (13 Sep, local time) - 3ft (0.9m), 9s period with NNE swell.
Afternoon surf: Afternoon surf (13 Sep, local time) - 3ft (0.9m), 9s period with NNE swell.
Evening surf: Evening surf (13 Sep, local time) - 3ft (0.9m), 9s period with NE swell.

The current surf forecast for Waimanu Bay at 9AM is: 0.9m 9s primary swell from a North-northeast direction and 0.5m 8s secondary swell from a East-northeast direction, 0.5m 4s secondary swell from a East direction (forecast issued at 01:00am September 13). The wind direction is predicted to be cross-onshore.

Time (HST) & Date	Wave Height	Wave Period
Morning (13 Sep)	3ft (0.9m)	9s
Afternoon (13 Sep)	3ft (0.9m)	9s
Evening (13 Sep)	3ft (0.9m)	9s

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

	Short Range Forecast Mostly dry. Warm (max 28°C on Tue morning, min 25°C on Sun morning). Wind will be generally light.
	Sunday 13								Monday 14								Tuesday 15
	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)	0	0	0	1	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)	NNE 9	NNE 9	NNE 9	NNE 9	NNE 9	NNE 9	NNE 9	NE 9	NE 8	NE 8	NE 8	NE 8	NE 8	NE 8	NE 8	NE 8	NE 8	NE 8	NE 8	E 12	ENE 5	E 11	E 11	E 11
Wave Graph
kJ	121	124	124	138	135	121	135	110	139	118	115	100	149	145	142	120	114	99	84	66	66	85	84	79
Wind (km/h)	E	E	E	ENE	ENE	ENE	E	E	E	E	ENE	ENE	ENE	ENE	E	E	E	E	E	E	ENE	E	E	E
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on
High Tide		4:13AM0.79m				3:51PM0.69m				4:53AM0.79m				4:10PM0.62m					5:36AM0.77m			4:24PM0.56m
Low Tide				10:15AM0.29m				10:09PM0.13m				11:00AM0.35m				10:33PM0.15m					11:51AM0.41m			10:59PM0.17m


	—	6:09	—	—	—	—	—	—	—	6:09	—	—	—	—	—	—	—	6:09	—	—	—	—	—	—
	—	—	—	—	—	6:27	—	—	—	—	—	—	—	6:25	—	—	—	—	—	—	—	6:24	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	25	25	25	26	26	26	25	25	25	25	26	27	27	27	26	26	26	26	26	28	28	27	27	26
Feels °C	27	27	27	28	28	28	27	27	27	27	29	30	29	29	29	29	29	29	27	30	29	28	29	27
Swell 1 Height (m) Direction Period (s)	NNE 9	NNE 9	NNE 9	NNE 9	NNE 9	NNE 9	NNE 9	NE 9	NE 8	NE 8	NE 8	NE 8	E 14	E 14	NE 8	E 13	NE 8	NE 8	NE 8	NNE 8	E 11	NNE 8	NNE 8	E 11
kJ	121	124	124	138	135	121	135	110	139	118	115	100	16	34	142	53	114	99	84	54	60	47	45	79
Swell 2 Height (m) Direction Period (s)	ENE 9	ENE 9	ENE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 6	E 15	SE 8	SE 8	E 13	N 10	E 12	E 12	E 12	E 12	NNE 8	E 11	E 11	NNE 8
kJ	45	44	40	7	7	6	6	6	6	6	4	17	3	3	31	8	48	72	69	66	22	85	84	44
Swell 3 Height (m) Direction Period (s)	SE 9	SE 9	SE 9	W 11	W 11	W 11	W 11	W 11	W 11	W 11	ESE 8	SE 8	W 10	W 10	SE 8	SE 8	N 10	NNE 10	NNE 10	W 9	N 10	W 9	N 10	N 9
kJ	3	3	3	2	2	2	2	2	2	2	6	3	2	2	2	2	8	10	9	2	8	2	8	7
Wind waves Height (m) Direction Period (s)	E 4	E 4	E 4	ENE 8	ENE 8	ENE 8	ENE 8	ENE 8	—	—	—	ESE 6	NE 8	NE 8	—	NE 8	—	—	E 6	E 4	ENE 5	E 4	E 4	E 4
kJ	9	9	6	73	72	54	38	38	—	—	—	11	149	145	—	120	—	—	3	38	66	40	37	35
Nearest Offshore or Glassy	Manini Beach HAW - Big Island	Pine Trees HAW - Big Island	La Perouse Bay/The Dumps HAW - Maui	Chocks HAW - Big Island	La Perouse Bay/The Dumps HAW - Maui	Dumps HAW - Maui	Makalawena HAW - Big Island	Pine Trees HAW - Big Island	Hakalau HAW - Big Island	Hakalau HAW - Big Island	Hakalau HAW - Big Island	La Perouse Bay/The Dumps HAW - Maui	Chocks HAW - Big Island	Kawaihae Breakwater HAW - Big Island	Hulihee Palace HAW - Big Island	Kolekole HAW - Big Island	Hakalau HAW - Big Island	Kawaihae Breakwater HAW - Big Island	Kawaihae Breakwater HAW - Big Island	Kawaihae Breakwater HAW - Big Island	Kawaihae Breakwater HAW - Big Island	Kawaihae Breakwater HAW - Big Island	Kawaihae Breakwater HAW - Big Island	Kawaihae Breakwater HAW - Big Island
Rating (10 max)	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1
Distance (km)	81	66	97	77	97	98	58	66	60	60	60	97	77	24	68	61	60	24	24	24	24	24	24	24
Best forecast wave conditions in Big Island	Palemano Point	Magics		Kahuku Ranch	Kahuku Ranch	Kahuku Ranch	Waiaha Rivermouth / Honls	Waiaha Rivermouth / Honls	Magics	Magics	Waiaha Rivermouth / Honls	Kaalualu Point	Kahuku Ranch	Kahuku Ranch	Magics	Magics	Magics	Waiaha Rivermouth / Honls	Magics	Spencer Beach Park	Spencer Beach Park	Spencer Beach Park	Magics	Magics
Rating (10 max)	1	1		1	1	1	1	1	1	1	1	1	1	1	1	1	1	2	2	1	1	1	2	2
Best forecast wave conditions in United States	Boners CAL - San Luis Obispo	Boners CAL - San Luis Obispo	Ranches HAW - Oahu	Pipeline HAW - Oahu	Pipeline HAW - Oahu	Church CAL - Orange County	Super Tubes CAL - Ventura	Boners CAL - San Luis Obispo	Boners CAL - San Luis Obispo	Boners CAL - San Luis Obispo	Ranches HAW - Oahu	Ranches HAW - Oahu	Ranches HAW - Oahu	Ranches HAW - Oahu	Mouse Rock CAL - San Luis Obispo	Mouse Rock CAL - San Luis Obispo	Mouse Rock CAL - San Luis Obispo	Mouse Rock CAL - San Luis Obispo	Magics HAW - Big Island	Cojo CAL - Santa Barbara	Off the Wall/Insanities HAW - Oahu	Church CAL - Orange County	Mouse Rock CAL - San Luis Obispo	Ranches HAW - Oahu
Rating (10 max)	3	3	1	2	2	2	3	3	3	3	1	1	2	2	4	3	3	3	2	2	2	2	2	3
Header Global	Ouano Lefts New Caledonia	Shipwreck Bay-Supertubes New Zealand	Cow Bombie Australia	Fish Boma South Africa	Claptons Coils South Africa	Gas Bay Australia	Cobblestones Australia	Cloudbreak Fiji	Gas Bay Australia	Gas Bay Australia	Glen Eden South Africa	Hole-in-the-Wall South Africa	Cow Bombie Australia	Cobblestones Australia	Supertubes Australia	Gas Bay Australia	Cow Bombie Australia	Saint Leu Reunion	Saint Leu Reunion	Saint Leu Reunion	Etang-Sale Reunion	Saint Leu Reunion	Etang-Sale Reunion	Etang-Sale Reunion
Rating (10 max)	6	5	6	5	5	6	6	5	6	6	7	7	5	5	5	5	5	6	5	6	6	5	5	5

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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Waimanu Bay 48 hour detailed Surf Forecast

How big are the waves at Waimanu Bay today (13 Sep):

Short Range Forecast

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