Snow-ForecastSnow-ForecastMountain-ForecastMountain-ForecastTide-ForecastTide-ForecastWeather-ForecastWeather-Forecast
Search by country, region, or break
Search by country, region, or break

Quick Links

Surf Forecasts:

Waimea Rivermouth surfForecast / HAW – Kaua'i / USA

information circle48hr Weather and Surf, issued 1 pm Thursday 12 Mar 2026 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
24.9° C
 (Which is slightly warmer than usual)

How big are the waves at Waimea Rivermouth today?

The current surf forecast for Waimea Rivermouth at 9PM is: 1.4m 6s primary swell from a South direction and 0.3m 15s secondary swell from a South-southeast direction (forecast issued at 01:00pm March 12). An open ocean swell of 1.0m 10s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (HST) & DateWave HeightWave Period
Morning (12 Mar)2.5ft (0.8m)6s
Afternoon (12 Mar)3.5ft (1.0m)5s
Evening (12 Mar)4.5ft (1.4m)6s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table
Thursday
12
Friday
13
Saturday
14
Sunday
15
11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM
Rating
(10 max)
0
0
0
0
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 (?)
0.9
SSW
0.9
S
1
S
1.4
S
1.5
S
1.9
S
2
S
2
S
2.1
SSW
2.2
SSW
2.2
SSW
1.8
SSW
2.5
WSW
2.4
WSW
2.4
WSW
2.1
WSW
2.3
WSW
2.5
WSW
3
WSW
2.2
W
2.2
W
2.1
W
3
WSW
2.5
W
Period(s) (?)655666677777789989101010101010
Wave
Graph
(?)Metric surfscale
Energy kJ (?)524255125139273335345385528503330655781880641662105815041000100090017331397
Wind
(km/h)
20
S
20
SSE
25
S
20
S
30
S
35
SSW
40
SSW
40
SSW
35
SSW
35
SSW
35
SW
30
SW
30
WSW
30
WSW
25
WSW
30
SW
30
WSW
30
WSW
30
SW
30
SW
35
SW
35
SW
35
SW
35
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
oncross-
on		cross-
on		cross-
on		cross-
on		ononononononcross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		onononcross-
on		cross-
on
High Tide
/ height (m)
11:40AM
0.07
12:56AM
0.39
12:49PM
0.10
1:35AM
0.42
1:28PM
0.14
2:07AM
0.44
Low Tide
/ height (m)
9:24AM
0.07
4:43PM
0.03
8:56AM
0.06
5:59PM
0.00
8:56AM
0.05
6:53PM
-0.02
Thursday
12
Friday
13
Saturday
14
Sunday
15
Sunrise-------6:48-------6:48-------6:47
Sunset--6:45-------6:46-------6:46-----
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
mod rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
light rain
light rain
Rain (mm)
4541141820239655532221-11223
Temp. °C242222222222222223232323222222232323242424232323
Feels °C (?)242221222019191921202022202020212121222222202020
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Latest Updates

Surf-Forecast Premium Launches 16-day Forecast and New, Improved Modelling
Ben Mondy

Surf-Forecast Premium Launches 16-day Forecast and New, Improved Modelling

Get 16% off your subscription with code 16DAYS—available for 16 days only, until March 25, 2026. Surf-Forecast Premium just got better. All paid subscribers will now see a full 16-day forecast, surf reports and wind and tide data for over 7,000 of the world's best surf spots. Premium members will also have access to a new high-resolution forecast model, which enhances our current forecasts by making them quicker and more accurate. That’s more lead time. More confidence. More chances to score g

Save Up to 20% on SIXT Rental Cars Worldwide – Exclusive Surf-Forecast Deal
travel
Surf Forecast

Save Up to 20% on SIXT Rental Cars Worldwide – Exclusive Surf-Forecast Deal

Surf road trips just got even better. Surf-Forecast users can now save up to 20% on SIXT rental cars worldwide during the promotional period until March 31, 2026. Whether you’re planning a legendary California road trip, chasing waves along Europe’s coasts, or exploring remote surf destinations, this exclusive SIXT offer helps you travel smarter and cheaper. And if you want some inspiration on where to go, check out our article Five Iconic Surf Road Trips. Click and get your SIXT discount

Read more

Read more

Discover more articles and updates in the Greenroom.

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 Waimea Rivermouth 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.

View detailed surf forecast for Waimea Rivermouth at:
surf-forecast.com

Nearest locationNearest
Nearest locationNearest
Nearest locationNearest