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Surf Forecasts:

Waimea Rivermouth surfForecast / HAW – Kaua'i / USA

information circle12 Day Weather and Surf, issued 7 pm Saturday 17 Jan 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
25.1° C
 (Which is slightly warmer than usual)

Best Forecast Surf Conditions for Waimea Rivermouth this week:

The surf forecast for Waimea Rivermouth over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Jan 18) at 8AM. The primary swell is predicted to be 1.3m and 6s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Waimea Rivermouth in the next 12 days are 1.3m 6s and forecast to arrive on Sunday (Jan 18) at 8AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 16s period and expected on Sunday (Jan 18) at 11AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Sun 18th Jan)4.5ft (1.3m) 6s
Best Surf 2PM (Sun 18th Jan)4ft (1.2m) 6s
Most Powerful 8AM (Sun 18th Jan)4.5ft (1.3m) 6s

Table - best surf conditions forecast for Waimea Rivermouth over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Mostly dry. Warm (max 24°C on Mon morning, min 21°C on Sat night). Wind will be generally light.

Days 3-6 Weather Summary Moderate rain (total 10mm), heaviest on Wed night. Warm (max 23°C on Tue night, min 19°C on Wed night). Wind will be generally light.

Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Sat
24
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
1
0
0
0
0
0
0
0
1
0
0
0
0
1
0
0
0
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.3
N
1.2
ESE
0.4
SSE
0.9
E
0.5
SE
0.4
SSE
0.6
SSE
0.5
SE
0.4
SSE
0.4
SE
0.3
SSE
0.3
SSE
0.2
SSE
0.2
SSW
0.3
SE
1.2
NNW
1.1
E
0.4
SE
0.4
SE
1.3
NNW
1.1
ESE
Period(s) (?)1261678888771212715812788117
Wave
Graph
(?)Metric surfscale
Energy kJ (?)012310769352646311815292852111010723230118
Wind
(km/h)
20
ENE
15
ESE
10
ESE
10
ENE
10
SE
10
S
5
E
5
SSE
5
SSW
5
NNE
15
NNE
20
NNE
20
NNE
15
NE
15
NE
15
NE
15
NE
15
ENE
15
NE
10
ENE
10
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		crosscrosscross-
off		crosscross-
on		cross-
off		cross-
on		glassglassoffoffoffcross-
off		offcross-
off		offcross-
off		offglasscross-
off
High Tide
/ height (m)
4:14AM
0.54
3:31PM
0.15
4:43AM
0.54
4:11PM
0.16
5:11AM
0.53
4:55PM
0.19
5:38AM
0.50
5:47PM
0.21
6:04AM
0.46
6:48PM
0.24
6:29AM
0.40
7:59PM
0.28
6:52AM
0.34
Low Tide
/ height (m)
8:40PM
-0.09
11:27AM
0.07
9:16PM
-0.09
11:49AM
0.07
9:51PM
-0.07
12:12PM
0.06
10:29PM
-0.03
12:36PM
0.05
11:10PM
0.02
1:03PM
0.03
11:59PM
0.09
1:32PM
0.02
1:05AM
0.17
2:06PM
-0.00
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Sat
24
Sunrise-7:18--7:18--7:18--7:18--7:18--7:18--7:18-
Sunset--6:17--6:19--6:19--6:20--6:21--6:21--6:22
clear
part cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
mod rain
light rain
cloud
part cloud
part cloud
part cloud
part cloud
clear
thunderstorm
Rain (mm)
------------64------1
Temp. °C222323222424222424232322201921202122212323
Feels °C (?)192121222323232423242220171820192021202424
  • 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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Latest Updates

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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

Information about the Waimea Rivermouth Surf forecast

The above surf forecast table for Waimea Rivermouth provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Waimea Rivermouth can be found by selecting the local surf guide option on the grey menu. Our Waimea Rivermouth surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Waimea Rivermouth) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Waimea Rivermouth may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Are you planning a vacation in Kaua'i? If you are looking for accommodation near Waimea Rivermouth, camping, hotels and condos and appartments in Kaua'i, consider staying in Nawiliwili which is 32 km (20 miles) away. Alternatively, find information about places to stay and car hire in Lihue - Kauai which is 34 km (21 miles) away

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