Surf Forecasts:
Waialua Rivermouth surf forecast from 4 Jul 2026:
- Most powerful swell: Tuesday 7 Jul, 8AM (local time) - 7ft (2.2m), 8s period, ENE swell with 566 kJ wave energy.
Best Forecast Surf Conditions for Waialua Rivermouth this week:
The most powerful waves expected at Waialua Rivermouth in the next 16 days are 2.2m 8s and forecast to arrive on Tuesday (Jul 07) at 8AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 18s period and expected on Sunday (Jul 05) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8AM (Tue 7th Jul) | 7ft (2.2m) 8s |
Table - best surf conditions forecast for Waialua Rivermouth over the next 16 days.
Updates in hr min s Forecast update imminent
Alright, let's talk about Waialua Rivermouth. This is a beach and reef setup, and right now, the forecast is a tough one for us paddle surfers. The trade winds are locked in from the ENE, blowing straight across the swell direction, keeping things ragged and lumpy. The water is sitting at 79°, which is about normal for this time of year.
We kick off on Saturday the 4th of July, but there's nothing worth paddling out for. The wind is a fresh 19 mph cross-onshore, and the 6 ft ENE swell is short-period, around 8 seconds, with moderate energy (438). The conditions are poor and it stays that way.
Through Sunday the 5th and Monday the 6th, the wind picks up to 22 mph, and the swell bumps up to 7 ft. The period drops to 7 seconds, meaning it's mostly wind-slop and chop with moderate to strong energy readings (523-541). For a beginner-friendly spot this size, it's already too big and messy. All sessions through to Tuesday the 7th and Wednesday the 8th remain a write-off.
The entire second week shows no real change. From Thursday the 9th through to Sunday the 19th of July, the pattern is the same: ENE trades between 12 and 22 mph, cross-onshore all the way. Swell stays in the 4 ft to 7 ft range with short periods between 5 and 8 seconds, and energy readings from 127 up to 434. While the wave height drops a little at times, the onshore wind kills the quality every single day.
Honestly, this is a blank run. For a fairly consistent spot, it's rough seeing nothing on offer for the full 16 days. It seems the setup is more interesting for kite surfing than paddle surfing with this constant cross-onshore breeze. Keep your eyes on the charts, things can change quickly around here, but for now, I'd leave the board in the car.
Rusty
Short Range ForecastSome drizzle, heaviest during Sun night. Warm (max 25°C on Sat morning, min 24°C on Sat night). Mainly fresh winds. | Days 4-6 Weather SummarySome drizzle, heaviest during Tue night. Warm (max 25°C on Tue morning, min 24°C on Tue morning). Mainly fresh winds. | ||||||||||||||||||||
Saturday 4 | Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | |||||||||||||||
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) | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 345 | 354 | 403 | 397 | 400 | 394 | 503 | 537 | 560 | 501 | 487 | 444 | 363 | 338 | 326 | 297 | 327 | 281 | 312 | 400 | 431 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 6:00PM0.61m | 7:27AM0.32m | 6:34PM0.54m | 8:41AM0.40m | 7:12PM0.47m | 9:49AM0.48m | 7:59PM0.39m | 10:49AM0.58m | 9:02PM0.31m | 11:42AM0.67m | 10:24PM0.25m | 12:32PM0.75m | 11:44PM0.22m | ||||||||
Low Tide | 11:05AM0.12m | 1:38AM0.04m | 12:11PM0.19m | 2:08AM0.02m | 1:45PM0.25m | 2:41AM0.01m | 3:52PM0.27m | 3:19AM-0.01m | 5:59PM0.24m | 4:02AM-0.03m | 7:27PM0.18m | 4:51AM-0.05m | 8:24PM0.12m | ||||||||
 | |  | | |  | | | | | | |  | |  | | | |  | | | |
 | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:52 | — | — |
 | — | 7:12 | — | — | 7:12 | — | — | 7:12 | — | — | 7:12 | — | — | 7:12 | — | — | 7:12 | — | — | 7:12 | — |
mm | — | — | — | — | — | 1 | — | — | — | — | — | 1 | — | — | — | — | — | — | 1 | 2 | 3 |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 23 | 23 | 23 | 22 | 22 | 22 | 21 | 21 | 21 | 22 | 22 | 21 | 22 | 22 | 23 | 23 | 23 | 24 | 24 | 24 | 24 |
Swell 1 Height (m) Direction Period (s) | NW 12 | NW 12 | NW 12 | NW 11 | SW 18 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 14 | W 13 | W 14 | W 13 |
| kJ | 93 | 90 | 66 | 43 | 150 | 102 | 99 | 92 | 84 | 82 | 81 | 38 | 38 | 37 | 35 | 33 | 32 | 19 | 32 | 33 | 30 |
Swell 2 Height (m) Direction Period (s) | SSW 16 | SW 15 | SW 19 | SSW 18 | NW 11 | NW 10 | NW 10 | NW 10 | NW 9 | ESE 9 | SE 9 | NW 8 | N 8 | W 16 | W 15 | W 15 | W 14 | W 16 | SSW 12 | SSW 13 | SW 19 |
| kJ | 98 | 58 | 93 | 123 | 42 | 17 | 16 | 4 | 3 | 9 | 3 | 3 | 1 | 5 | 5 | 4 | 15 | 19 | 14 | 16 | 59 |
Swell 3 Height (m) Direction Period (s) | SSW 21 | SW 20 | SW 15 | SW 14 | ESE 11 | SSW 13 | SE 10 | W 10 | — | NW 9 | NW 9 | — | — | — | W 10 | W 18 | W 9 | W 13 | SW 21 | SW 21 | W 16 |
| kJ | 88 | 98 | 54 | 54 | 11 | 16 | 4 | 2 | — | 3 | 3 | — | — | — | 2 | 6 | 2 | 3 | 18 | 17 | 20 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
| kJ | 345 | 354 | 403 | 397 | 400 | 394 | 503 | 537 | 560 | 501 | 487 | 444 | 363 | 338 | 326 | 297 | 327 | 281 | 312 | 400 | 431 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 23 | 23 | 25 | 23 | 23 | 23 | 23 | 27 | 25 | 23 | 23 | 25 | 23 | 25 | 25 | 27 | 27 | 27 | 23 | 23 | 23 |
Best forecast wave conditions in Molokai | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Waialua Rivermouth Surf forecast
The above surf forecast table for Waialua Rivermouth provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Waialua Rivermouth can be found by selecting the local surf guide option on the grey menu. Our Waialua 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 (Waialua 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 Waialua 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 Molokai? If you are looking for accommodation near Waialua Rivermouth, camping, hotels and condos and appartments in Molokai, consider staying in Kaunakakai - Molokai which is 36 km (22 miles) away. Other places in and around Molokai where you can find information about places to rent, and car hire include Wailuku which is 36 km (22 miles) away, Kahului, Lanai - Lanai and Kihei.
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