Surf Forecasts:
Waimea Rivermouth surf forecast from 13 Oct 2026:
- Best quality surf: Tuesday 20 Oct, 5AM (local time) - 6ft (1.9m), 8s period, E swell with cross-offshore winds.
- Most powerful swell: Tuesday 20 Oct, 5AM (local time) - 6ft (1.9m), 8s period, E swell with 470 kJ wave energy.
- Next surfable swell (1★+): Tuesday 13 Oct, 2PM (local time) - 2.5ft (0.7m), 13s period with S swell.
Best Forecast Surf Conditions for Waimea Rivermouth this week:
The surf forecast for Waimea Rivermouth over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Oct 13) at 2PM. The primary swell is predicted to be 0.7m and 13s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Waimea Rivermouth in the next 16 days are 1.9m 8s and forecast to arrive on Tuesday (Oct 20) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Thursday (Oct 15) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Tue 13th Oct) | 2.5ft (0.7m) 13s |
| Best Surf | 5AM (Tue 20th Oct) | 6ft (1.9m) 8s |
| Most Powerful | 5AM (Tue 20th Oct) | 6ft (1.9m) 8s |
Table - best surf conditions forecast for Waimea Rivermouth over the next 16 days.
Short Range ForecastMostly dry. Warm (max 27°C on Tue morning, min 24°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Sat morning. Warm (max 27°C on Fri morning, min 23°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 13 | Wednesday 14 | Thursday 15 | Friday 16 | Saturday 17 | Sunday 18 | Monday 19 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | S 13 | S 13 | S 13 | E 9 | S 21 | S 20 | S 19 | S 18 | S 17 | S 16 | SSE 10 | E 6 | E 7 | E 7 | E 7 | E 7 | SE 6 | E 8 | E 8 | E 8 | E 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 167 | 167 | 165 | 125 | 138 | 188 | 181 | 161 | 153 | 128 | 69 | 178 | 274 | 264 | 392 | 352 | 18 | 399 | 410 | 410 | 466 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | cross-off | glassy | glassy | 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 | 4:13PM0.23m | 6:13AM0.52m | 4:04PM0.21m | 7:01AM0.49m | 8:00AM0.46m | 9:11AM0.45m | 8:57PM0.14m | 10:23AM0.44m | 11:47PM0.17m | 11:22AM0.45m | 00:33AM0.22m | ||||||||||
Low Tide | 12:34PM0.20m | 10:29PM0.02m | 2:02PM0.21m | 10:54PM0.05m | 11:21PM0.07m | 11:53PM0.10m | 7:55PM0.15m | 00:47AM0.14m | 7:14PM0.14m | 3:17AM0.17m | 7:15PM0.12m | ||||||||||
 |  |  | | | | | | | | | |  | | | | | | | | | |
 | 6:33 | — | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — | 6:35 | — | — | 6:35 | — | — | 6:35 | — | — |
 | — | 6:15 | — | — | 6:14 | — | — | 6:13 | — | — | 6:13 | — | — | 6:12 | — | — | 6:10 | — | — | 6:09 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — |
Temp °C | 27 | 26 | 25 | 26 | 26 | 25 | 27 | 27 | 25 | 27 | 27 | 25 | 26 | 27 | 25 | 25 | 27 | 25 | 25 | 27 | 25 |
Feels °C | 30 | 29 | 28 | 28 | 28 | 26 | 28 | 26 | 25 | 27 | 26 | 25 | 26 | 26 | 24 | 24 | 26 | 25 | 25 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | NW 14 | NW 14 | NW 13 | NW 13 | NW 12 | NW 12 | NNW 12 | NNW 11 | NNW 11 | NNW 10 | NNW 12 | N 11 | N 11 | N 11 | NNE 7 | N 12 | N 12 | N 13 | N 12 | N 12 | NE 8 |
| kJ | 846 | 701 | 632 | 494 | 449 | 330 | 235 | 154 | 173 | 184 | 303 | 396 | 451 | 229 | 84 | 299 | 284 | 335 | 235 | 177 | 64 |
Swell 2 Height (m) Direction Period (s) | S 13 | S 13 | S 13 | S 12 | S 12 | SSE 12 | S 19 | S 18 | S 17 | N 13 | N 7 | SE 8 | SE 6 | NNE 8 | NNW 11 | NNE 7 | NNE 7 | NE 7 | NE 7 | NE 8 | N 11 |
| kJ | 167 | 167 | 165 | 98 | 101 | 145 | 181 | 161 | 147 | 123 | 35 | 20 | 9 | 72 | 150 | 66 | 61 | 77 | 56 | 57 | 89 |
Swell 3 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SW 17 | S 21 | S 20 | S 10 | S 11 | S 11 | S 16 | SSE 10 | S 15 | S 14 | NW 15 | N 13 | S 13 | NW 13 | SE 7 | SE 7 | SE 6 | SE 5 |
| kJ | 66 | 64 | 66 | 77 | 138 | 188 | 54 | 56 | 37 | 125 | 69 | 69 | 65 | 60 | 126 | 83 | 84 | 16 | 21 | 18 | 10 |
Wind waves Height (m) Direction Period (s) | ENE 8 | E 7 | E 7 | E 9 | E 5 | E 5 | E 5 | E 6 | E 6 | E 6 | E 6 | E 6 | E 7 | E 7 | E 7 | E 7 | SE 6 | E 8 | E 8 | E 8 | E 8 |
| kJ | 94 | 69 | 103 | 125 | 37 | 67 | 64 | 158 | 153 | 128 | 132 | 178 | 274 | 264 | 392 | 352 | 18 | 399 | 410 | 410 | 466 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 0 | 6 | 15 | 0 | 330 | 3 | 6 | 156 | 6 | 0 | 6 | 6 |
Best forecast wave conditions in Kaua'i | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.
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 16 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.
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