Surf Forecasts:
Rivermouth_Wailuku surf forecast from 31 Jul 2026:
- Most powerful swell: Monday 3 Aug, 11PM (local time) - 5ft (1.6m), 12s period, ENE swell with 725 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 1.6m 12s and forecast to arrive on Monday (Aug 03) at 11PM. 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 11s period and expected on Tuesday (Aug 04) at 5AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Mon 3rd Aug) | 5ft (1.6m) 12s |
Table - best surf conditions forecast for Rivermouth_Wailuku over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it.
Well, I’ve got to be straight with you – this 16-day window for Rivermouth_Wailuku is a tough one. It’s a real dry spell. We’re looking at a solid run of poor conditions from the get-go, all the way through Thursday, August 14th. The wind is a constant problem, sticking to a cross-on direction from the ENE and E most days, with speeds cranking from 9 mph to 16 mph. That’s blowing the surf out something shocking, leaving it choppy and messy. There’s a gap here with no real worthwhile surf to speak of for the entire period.
The only flicker of hope comes on Tuesday morning, August 4th. It’s still not a good day, but it’s the closest we get to something rideable. The swell is 5 ft from the ENE, with a period stretching out to 11 seconds. That longer period gives it a bit more shape and energy, and the combined energy is moderate at 582. The wind drops to a light breeze at 6 mph, so there’s only small wind ripples on the surface. It’s still cross-on, so it won’t be glassy, but it’s the cleanest call in a very ugly window. The water temperature is sitting at 80°, which is about average for this time of year.
Really, if you’re desperate for a paddle, that Tuesday morning session is your only chance to get wet, but don’t expect much. The rest of the forecast is a write-off. For the most part, this reef setup is just getting hammered by onshore wind and short-period, weak energy. It’s a bleak picture, but in this area, a blank run like this isn’t unheard of.
Stay patient, and keep an eye on the forecasts. Things can change.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Thu afternoon, min 24°C on Fri night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Mon night. Warm (max 27°C on Sun afternoon, min 24°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Thu 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | ||||||||||||||
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) | E 8 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 12 | ENE 11 | ENE 11 | ENE 10 | ENE 9 | ENE 9 | E 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 265 | 259 | 346 | 406 | 520 | 575 | 660 | 621 | 537 | 488 | 422 | 284 | 321 | 713 | 582 | 551 | 348 | 218 | 176 | 137 |
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-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 | 3:42PM0.83m | 2:58AM0.47m | 4:04PM0.80m | 3:39AM0.48m | 4:25PM0.76m | 4:25AM0.49m | 4:43PM0.71m | 5:20AM0.50m | 4:58PM0.65m | 6:31AM0.50m | 5:07PM0.58m | 8:17AM0.53m | 4:59PM0.52m | |||||||
Low Tide | 10:10PM0.21m | 8:59AM-0.02m | 10:34PM0.19m | 9:31AM0.05m | 11:00PM0.16m | 10:03AM0.14m | 11:27PM0.13m | 10:39AM0.24m | 11:58PM0.11m | 11:22AM0.35m | 00:37AM0.08m | 12:37PM0.46m | 1:32AM0.06m | |||||||
 |  |  | | | | | | | |  | | |  | | | |  | | | |
 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — |
 | 7:05 | — | — | 7:04 | — | — | 7:04 | — | — | 7:02 | — | — | 7:02 | — | — | 7:01 | — | — | 7:01 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — |
Temp °C | 28 | 27 | 27 | 27 | 25 | 27 | 27 | 25 | 27 | 27 | 25 | 26 | 26 | 25 | 26 | 26 | 26 | 26 | 27 | 26 |
Feels °C | 29 | 28 | 27 | 26 | 24 | 26 | 26 | 24 | 26 | 27 | 24 | 27 | 26 | 25 | 28 | 27 | 28 | 28 | 28 | 28 |
Swell 1 Height (m) Direction Period (s) | E 18 | E 16 | E 15 | E 15 | E 14 | E 14 | E 14 | E 14 | E 14 | E 13 | E 13 | E 13 | E 12 | W 12 | ENE 11 | W 12 | N 10 | ENE 9 | NNE 9 | E 8 |
| kJ | 96 | 183 | 228 | 219 | 202 | 194 | 196 | 183 | 142 | 130 | 125 | 121 | 148 | 3 | 582 | 12 | 7 | 218 | 7 | 137 |
Swell 2 Height (m) Direction Period (s) | WSW 18 | N 9 | N 9 | N 8 | N 8 | N 8 | SW 14 | N 10 | N 9 | N 9 | N 8 | N 8 | N 7 | W 18 | W 11 | N 10 | W 12 | NNE 9 | W 11 | N 8 |
| kJ | 30 | 15 | 14 | 12 | 11 | 4 | 8 | 18 | 15 | 14 | 12 | 11 | 17 | 6 | 2 | 2 | 11 | 8 | 10 | 5 |
Swell 3 Height (m) Direction Period (s) | N 10 | WSW 17 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | N 11 | SW 14 | SW 14 | W 12 | W 12 | W 11 | W 12 | SW 12 | SW 17 | SW 17 | SW 16 | W 12 | SW 16 | W 13 |
| kJ | 7 | 27 | 25 | 25 | 22 | 21 | 9 | 8 | 8 | 3 | 3 | 2 | 3 | 6 | 11 | 11 | 10 | 11 | 10 | 13 |
Wind waves Height (m) Direction Period (s) | E 8 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 12 | — | ENE 11 | ENE 10 | ESE 6 | ENE 9 | — |
| kJ | 265 | 259 | 346 | 406 | 520 | 575 | 660 | 621 | 537 | 488 | 422 | 284 | 321 | 713 | — | 551 | 348 | 26 | 176 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 14 | 14 | 14 | 20 | 20 | 14 | 14 | 14 | 20 | 20 | 20 | 5 | 21 | 5 | 5 | 20 | 14 | 14 | 14 | 14 |
Best forecast wave conditions in Maui | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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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.
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