Surf Forecasts:
Rivermouth_Wailuku surf forecast from 4 Aug 2026:
- Most powerful swell: Tuesday 4 Aug, 5PM (local time) - 5ft (1.5m), 11s period, ENE swell with 521 kJ wave energy.
Best Forecast Surf Conditions for Rivermouth_Wailuku this week:
The most powerful waves expected at Rivermouth_Wailuku in the next 16 days are 1.5m 11s and forecast to arrive on Tuesday (Aug 04) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 13s period and expected on Tuesday (Aug 04) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5PM (Tue 4th Aug) | 5ft (1.5m) 11s |
Table - best surf conditions forecast for Rivermouth_Wailuku over the next 16 days.
The Lowdown
Well, folks, it’s Rusty here, and I gotta level with you. Lookin’ at the next 16 days for our local stretch, it's a pretty grim picture. The only break on the cards is Rivermouth_Wailuku, and honestly, it’s a tough watch. The forecast is a flat-line of poor surf conditions right through from the start on Tuesday, August 4th, all the way to Wednesday, August 19th. That’s over two weeks of nothing to write home about.
The whole period is plagued by a persistent cross-onshore wind, mostly from the ENE, blowing at 9 to 16 mph. That breeze is just chopping everything up, keeping the surface messy and bumpy. The swell is hanging around the 3 ft to 7 ft range, but it’s a short-period, wind-driven affair (mostly 7 to 8 seconds, sometimes as low as 5), so there’s no real power or shape to it. The combined energy does get up there, like on Sunday, August 16th afternoon, hitting 638 (moderate wave energy), but with that wind and the poor quality, it’s just a messy, blown-out lump.
The water temp is sitting at 80°, which is about normal for this time of year. The anomaly is only 0.5°, so nothing to get excited about. The optimum swell direction for this reef setup is from the NNE, but we’re getting everything from the ENE and E – totally wrong angle. The conditions are so consistently poor, and the break is a reef setup, so with the wind and swell being unfriendly, it’s a no-go.
Honestly, this is one of those blank runs where the area just ain’t delivering. It’s not a shocker for a spot like this when the wind and swell directions don’t line up. Keep your gear waxed, hope the forecasts change, but for now, you’re better off finding something else to do. There is no standout period, no hidden gem in this window. It’s all a washout.
Rusty.
Short Range ForecastSome drizzle, heaviest during Thu afternoon. Warm (max 26°C on Tue morning, min 24°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Sun morning. Warm (max 27°C on Sat morning, min 25°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 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 11 | ENE 11 | ENE 10 | ENE 9 | ENE 9 | NE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 5 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 436 | 521 | 325 | 207 | 211 | 158 | 183 | 131 | 86 | 96 | 61 | 101 | 168 | 215 | 254 | 283 | 364 | 355 | 280 | 283 | 268 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | 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 | cross-on |
High Tide | 5:07PM0.58m | 8:17AM0.53m | 4:59PM0.52m | 10:35AM0.60m | 11:51AM0.70m | 12:37PM0.79m | 10:03PM0.34m | 1:16PM0.86m | 11:50PM0.37m | 1:52PM0.90m | 00:51AM0.42m | ||||||||||
Low Tide | 11:22AM0.35m | 00:37AM0.08m | 12:37PM0.46m | 1:32AM0.06m | 2:47AM0.04m | 4:09AM0.00m | 8:44PM0.33m | 5:19AM-0.05m | 8:26PM0.30m | 6:16AM-0.09m | 8:41PM0.26m | ||||||||||
 | |  | | | | |  | |  | |  | | | | |  | | | | | |
 | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — |
 | — | 7:01 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:59 | — |
mm | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | 1 | 2 | — | — | — | — |
Temp °C | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 26 | 27 | 27 | 25 | 26 | 26 | 26 | 27 | 27 | 26 |
Feels °C | 28 | 28 | 26 | 28 | 28 | 26 | 27 | 27 | 26 | 26 | 27 | 27 | 28 | 27 | 25 | 27 | 27 | 27 | 28 | 28 | 27 |
Swell 1 Height (m) Direction Period (s) | ENE 11 | W 13 | ENE 10 | NNE 9 | NNE 8 | NNE 8 | N 8 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | NE 11 | NE 10 | NE 10 | NE 9 | NE 9 | W 12 | W 11 | W 11 | N 9 | N 8 |
| kJ | 436 | 13 | 325 | 8 | 7 | 6 | 5 | 7 | 11 | 10 | 5 | 18 | 24 | 14 | 22 | 14 | 11 | 9 | 9 | 6 | 5 |
Swell 2 Height (m) Direction Period (s) | W 11 | N 10 | N 9 | W 12 | W 12 | W 12 | W 11 | NW 8 | NE 11 | W 10 | NE 12 | NNW 7 | N 7 | WSW 18 | WSW 18 | WSW 17 | N 7 | WSW 16 | N 9 | W 10 | W 10 |
| kJ | 2 | 2 | 7 | 11 | 11 | 11 | 10 | 2 | 5 | 9 | 23 | 5 | 3 | 31 | 30 | 27 | 4 | 25 | 6 | 8 | 8 |
Swell 3 Height (m) Direction Period (s) | SW 17 | SW 17 | W 12 | SW 16 | SW 16 | SW 16 | NW 8 | W 12 | W 12 | SW 14 | SW 20 | WSW 19 | WSW 18 | N 6 | W 13 | W 12 | WSW 16 | N 10 | SW 16 | SW 16 | SW 15 |
| kJ | 11 | 11 | 12 | 10 | 10 | 9 | 3 | 11 | 11 | 8 | 15 | 37 | 33 | 3 | 13 | 11 | 26 | 8 | 10 | 10 | 9 |
Wind waves Height (m) Direction Period (s) | — | ENE 11 | — | ENE 9 | ENE 9 | NE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 5 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 |
| kJ | — | 521 | — | 207 | 211 | 158 | 183 | 131 | 86 | 96 | 61 | 101 | 168 | 215 | 254 | 283 | 364 | 355 | 280 | 283 | 268 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 5 | 14 | 5 | 5 | 20 | 14 | 14 | 20 | 14 | 14 | 14 | 14 | 14 | 20 | 14 | 14 | 14 | 14 | 14 | 14 | 14 |
Best forecast wave conditions in Maui | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
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 Rivermouth_Wailuku 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 Rivermouth_Wailuku Surf forecast
The above surf forecast table for Rivermouth_Wailuku provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Rivermouth_Wailuku can be found by selecting the local surf guide option on the grey menu. Our Rivermouth_Wailuku 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 (Rivermouth_Wailuku) 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 Rivermouth_Wailuku 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.
Rivermouth_Wailuku is 4 km (2 miles) from Wailuku. If you plan a vacation in Maui, look for hotels and other accommodation in Wailuku. Wailuku has rooms for a wide range of budgets as well as car hire and transport links.
Nearest