Waimea Rivermouth Surf Forecast

/ HAW – Kaua'i (25 breaks) / Hawaii (267 breaks) /

USA (1297 breaks) / Lat Long: (21.95° N 159.67° W)

Surf Forecasts:

Waimea Rivermouth surfForecast / HAW – Kaua'i / USA

48hr Weather and Surf, issued 1 am Monday 15 Sep 2025 HST

Forecast update in hr min s Forecast update imminent

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

Today's Waimea Rivermouth sea temperature is 27.8° C
(Which is slightly warmer than usual)

How big are the waves at Waimea Rivermouth today?

The current surf forecast for Waimea Rivermouth at 7AM is: 0.6m 10s primary swell from a South-southeast direction (forecast issued at 01:00am September 15). An open ocean swell of 0.7m 10s is not directed at the surf break, a second open ocean swell of 1.0m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (HST) & Date	Wave Height	Wave Period
Morning (15 Sep)	2ft (0.6m)	10s
Afternoon (15 Sep)	3.5ft (1.1m)	8s
Evening (15 Sep)	1.5ft (0.4m)	13s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

		Monday 15								Tuesday 16								Wednesday 17
	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	11 AM	2 PM	5 PM	8 PM
Rating (10 max)	1	1	1	1	0	2	1	1	1	1	1	1	1	1	1	1	1	1	1	2	2	1	1	1
Swell Height Map See all maps
Wave Height (m) & direction (?)	E	SSE	SSE	SSE	SSE	ESE	SE	SSW	SSW	SSW	SE	SE	SE	SSW	SSW	SSW	SE	E	E	ESE	ESE	SW	SE	SE
Period(s) (?)	7	11	10	10	10	8	10	13	13	13	10	10	10	12	13	13	9	6	6	7	7	15	9	9
Wave Graph (?)
Energy (?)	180	175	143	142	140	287	176	81	167	157	107	137	98	82	96	94	71	179	199	254	322	103	103	89
Wind (km/h)	ENE	ENE	ENE	ENE	ESE	E	ENE	NE	ENE	ENE	ENE	ENE	ENE	E	ENE	ENE	ENE	ENE	ENE	ENE	E	E	ENE	ENE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- off	cross- off	cross- off	cross- off	cross	cross- off	glass	glass	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 / height (m)	9:18PM 0.16					11:54AM 0.56				11:50PM 0.18				12:51PM 0.57				12:57AM 0.22				1:37PM 0.57
Low Tide / height (m)	8:21PM 0.16		3:26AM 0.08						8:14PM 0.14			5:05AM 0.08					8:30PM 0.13			6:18AM 0.06

		Monday 15								Tuesday 16								Wednesday 17
Sunrise	-	-	-	6:24	-	-	-	-	-	-	-	6:24	-	-	-	-	-	-	-	6:24	-	-	-	-
Sunset	-	-	-	-	-	-	6:42	-	-	-	-	-	-	-	6:40	-	-	-	-	-	-	-	6:39	-

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

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 - Kaua'i

Wind Update Continuing clean conditions at Waimea Rivermouth (calm at Barking Sands/Kauai Airport 16 km from Waimea Rivermouth). A 0.7m swell from the SE
2 hours 26 minutes ago Waimea Rivermouth

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16 km away, 2 h 26 min ago

0 km/h

0.0

27.8

Air / Water (°C)

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