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 Thursday 16 Oct 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 5AM is: 0.6m 12s primary swell from a Southeast direction (forecast issued at 01:00am October 16). An open ocean swell of 1.4m 14s 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 (16 Oct)	2ft (0.6m)	11s
Afternoon (16 Oct)	1.5ft (0.4m)	16s
Evening (16 Oct)	1.5ft (0.4m)	16s

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

		Thursday 16								Friday 17								Saturday 18
	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	1	1	0	1	0	1	1	1	1	2	2	2	1	2	1	1	2	2	2	2
Swell Height Map See all maps
Wave Height (m) & direction (?)	SE	SE	SE	SSE	SSW	SSW	SSW	SSW	SE	SSE	SSE	SSE	E	E	E	E	E	E	E	E	E	E	E	E
Period(s) (?)	9	10	12	12	17	16	16	16	9	9	9	9	7	7	7	7	7	7	7	7	7	7	7	7
Wave Graph (?)
kJ (?)	55	57	112	90	117	105	102	102	38	52	52	53	142	215	294	266	214	208	198	233	320	339	264	264
Wind (km/h)	ENE	ENE	ENE	E	E	ESE	E	ENE	ENE	ENE	ENE	ENE	E	E	ENE	ENE	ENE	ENE	ENE	ENE	ENE	E	ENE	ENE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- off	cross- off	cross- off	cross- off	cross- off	cross	cross	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 / height (m)		1:00AM 0.28				12:56PM 0.49				1:41AM 0.34				1:32PM 0.46					2:18AM 0.40				2:02PM 0.42
Low Tide / height (m)				6:15AM 0.13				7:53PM 0.08				7:16AM 0.13					8:09PM 0.07				8:07AM 0.14

		Thursday 16								Friday 17								Saturday 18
Sunrise	-	-	-	6:35	-	-	-	-	-	-	-	6:35	-	-	-	-	-	-	-	6:35	-	-	-	-
Sunset	-	-	-	-	-	-	6:13	-	-	-	-	-	-	-	6:12	-	-	-	-	-	-	-	6:10	-

Rain (mm)	-	-	-	-	-	-	1	-	-	-	-	-	1	2	1	-	-	-	-	1	-	-	-	-
Temp. °C	25	24	24	25	27	27	27	25	25	25	25	25	27	27	26	25	25	25	25	25	27	28	27	25
Feels °C (?)	26	25	25	25	27	27	27	26	27	27	27	26	28	29	28	26	26	26	26	25	27	29	28	26

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 (light winds from the ENE at Barking Sands/Kauai Airport 16 km from Waimea Rivermouth). 1.2m 6s windswell from the E with a 0.5m 9s swell from the SSE and a 0.3m 13s groundswell from the SSW. 3 swells combining to make bigger set waves.
1 hour 50 minutes ago Waimea Rivermouth

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16 km away, 1 h 50 min ago

7 km/h

ENE

0.0

27.8

Air / Water (°C)

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