Waimanu Bay Surf Forecast

/ HAW – Big Island (60 breaks) / Hawaii (267 breaks) /

USA (1297 breaks) / Lat Long: (20.15° N 155.64° W)

Surf Forecasts:

Waimanu Bay surfForecast / HAW – Big Island / USA

48hr Weather and Surf, issued 1 pm Friday 05 Sep 2025 HST

Forecast update in hr min s Forecast update imminent

Waimanu Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Waimanu Bay sea temperature is 26.5° C
(Which is normal for this time of year)

How big are the waves at Waimanu Bay today?

The current surf forecast for Waimanu Bay at 4PM is: 0.4m 11s primary swell from a North-northwest direction and 0.3m 7s secondary swell from a North direction, 1.0m 4s secondary swell from a East direction (forecast issued at 01:00pm September 05). The wind direction is predicted to be cross-onshore.

Time (HST) & Date	Wave Height	Wave Period
Morning (05 Sep)	1.5ft (0.4m)	11s
Afternoon (05 Sep)	1.5ft (0.4m)	11s
Evening (05 Sep)	2.5ft (0.8m)	6s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Friday 05					Saturday 06								Sunday 07								Monday 08
	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	0	0	0	0	0	1	0	0	0	0	0	2	2	1	2	2	1	1	1	2	1	1	1
Swell Height Map See all maps
Wave Height (m) & direction (?)	NW	NW	NNW	E	NW	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E
Period(s) (?)	11	11	11	6	11	11	12	12	11	11	14	14	13	13	13	12	13	13	13	12	13	13	12	12
Wave Graph (?)
Energy (?)	76	95	106	118	151	160	145	181	332	292	399	500	573	524	492	482	622	729	670	574	556	554	517	578
Wind (km/h)	ENE	ENE	ENE	E	E	ESE	SE	E	NE	NE	ENE	E	E	ESE	E	E	NE	ENE	E	E	E	E	E	E
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- on	cross- on	cross- on	cross- on	cross	cross	cross- off	cross	cross- on	cross- on	cross- on	cross- on	cross	cross	cross	glass	on	cross- on	cross- on	cross	cross	cross- on	cross- on	cross- on
High Tide / height (m)		1:58PM 0.93				1:45AM 0.60					2:26PM 0.93				2:27AM 0.67				2:54PM 0.91				3:10AM 0.73
Low Tide / height (m)					8:30PM 0.24			7:38AM 0.09					8:52PM 0.20				8:21AM 0.11				9:16PM 0.16

	Friday 05					Saturday 06								Sunday 07								Monday 08
Sunrise	-	-	-	-	-	-	-	6:07	-	-	-	-	-	-	-	6:07	-	-	-	-	-	-	-	6:07
Sunset	-	-	6:34	-	-	-	-	-	-	-	6:32	-	-	-	-	-	-	-	6:31	-	-	-	-	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	1	-	-	-	-	-
Temp. °C	27	27	26	25	24	24	24	25	27	27	26	25	25	24	24	25	27	26	26	25	24	24	24	24
Feels °C (?)	26	27	26	25	24	25	25	26	28	28	27	26	27	26	27	27	29	28	28	26	25	25	24	24

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

Recent Eyeball Surf Reports for HAW - Big Island

Wind Update The wind is still cross-on at Waimanu Bay (light winds from the ENE at Kapulena wx 12 km from Waimanu Bay). 0.7m 6s windswell from the E with a 0.6m 9s swell from the ENE and a 0.5m 10s swell from the NE as well as a 0.4m 9s swell from the NNW. 4 swells combining to make bigger set waves.
1 hour 7 minutes ago Waimanu Bay

Expand

View all

1 h 7 min ago

13 km/h

ENE

Cross-On

Please reload the page to see if there are any updates.

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Waimanu Bay surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.