
Surf Forecasts:
Rivermouth_Wailuku surf forecast from 25 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 2AM (local time) - 11ft (3.5m), 11s period, ENE swell with offshore winds.
- Most powerful swell: Tuesday 28 Jul, 8PM (local time) - 11ft (3.5m), 13s period, ENE swell with 3,752 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 2AM (local time) - 11ft (3.5m), 11s period with ENE swell.
Best Forecast Surf Conditions for Rivermouth_Wailuku this week:
The surf forecast for Rivermouth_Wailuku over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Jul 29) at 2AM. The primary swell is predicted to be 3.5m and 11s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Rivermouth_Wailuku in the next 16 days are 3.5m 13s and forecast to arrive on Tuesday (Jul 28) at 8PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 4s period and expected on Wednesday (Jul 29) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Wed 29th Jul) | 11ft (3.5m) 11s |
| Best Surf | 2AM (Wed 29th Jul) | 11ft (3.5m) 11s |
| Most Powerful | 8PM (Tue 28th Jul) | 11ft (3.5m) 13s |
Table - best surf conditions forecast for Rivermouth_Wailuku over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it for this neck of the woods. We’ve got a bit of a mixed bag coming up, with a rough start but a real sweet spot mid-week.
The first few days are a write-off, honest. From Saturday the 25th right through to the end of Tuesday the 28th, the easterly trade winds are howling at 12 to 16 mph, blowing straight across the waves. Swell is there, but it’s all cross-onshore junk. Heights are between 3 ft and 10 ft, but the wind has it all chopped up and messy. The combined energy is moderate at first, but by Tuesday afternoon it’s pumping strong at 3560, but it’s un-rideable. You’d be better off staying home.
Then we get a window. Wednesday the 29th of July is the standout. The wind swings light and variable from the SSE at 6 mph, going cross-offshore. The sky clears up, the water cleans right up, and we’ve got a solid 6 ft to 6 ft of swell rolling in from the ENE. The period is a nice 9 to 10 seconds, so the waves will have some shape and push. Combined energy is a decent 694, so there’s plenty of power. This is the one to circle on the calendar. Rivermouth_Wailuku (Wailuku) will be clean, and the water temperature is about average for the time of year, nothing weird.
After that, it’s back into the trade wind grind. From Thursday the 30th through to Sunday the 2nd of August, the cross-onshore winds are back at 12 to 16 mph, ruining the 3 ft to 7 ft of swell. The energy drops off from moderate to weak. Not worth paddling out.
We get a glimmer on Monday the 3rd of August and Tuesday the 4th. The wind drops to a gentle 6 to 9 mph, with a light cross-on breeze. The swell is 4 ft to 5 ft from the ENE, with a longer period of 12 to 14 seconds. The combined energy is moderate. It’s not perfect, but it’s a lot better than the preceding days. Could be worth a look if you’re desperate and the tide is right.
The rest of the run into the second week stays pretty average. From Wednesday the 5th of August through to Sunday the 9th, we’re back to gentle to moderate cross-onshore winds and short-period swell. Heights are 4 ft to 6 ft, but the energy is weak to moderate, and the wind keeps it choppy. Nothing to get excited about.
So, the bottom line: if you're a surfer, hold out for Wednesday the 29th. That’s the best on offer. The rest of the month is a lot of waiting for the wind to cooperate.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sun night. Warm (max 26°C on Sat morning, min 24°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 10mm), heaviest on Mon night. Warm (max 28°C on Wed afternoon, min 25°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | ||||||||||||||
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 7 | NE 8 | NE 8 | NE 8 | ENE 8 | E 15 | E 14 | E 14 | E 13 | E 13 | E 13 | ENE 13 | ENE 11 | ENE 10 | ENE 9 | ENE 8 | E 8 | E 8 | E 8 |
Wave Graph | |||||||||||||||||||
310 | 378 | 388 | 378 | 339 | 610 | 687 | 700 | 905 | 1121 | 1838 | 3560 | 2734 | 579 | 524 | 449 | 308 | 300 | 329 | |
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 | on | on | cross-on | on | on | off | cross-off | cross-off | cross | cross-on | cross-on | cross-on |
High Tide | 1:30PM0.73m | 11:19PM0.34m | 1:58PM0.77m | 00:18AM0.37m | 2:25PM0.80m | 1:02AM0.40m | 2:52PM0.82m | 1:41AM0.43m | 3:17PM0.83m | 2:19AM0.45m | 3:42PM0.83m | 2:58AM0.47m | |||||||
Low Tide | 5:21AM0.03m | 8:39PM0.32m | 6:07AM-0.01m | 8:45PM0.30m | 6:47AM-0.04m | 9:01PM0.27m | 7:24AM-0.07m | 9:22PM0.25m | 7:57AM-0.07m | 9:46PM0.23m | 8:28AM-0.05m | 10:10PM0.21m | |||||||
— | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | |
7:07 | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:06 | — | — | 7:05 | — | — | 7:05 | — | |
mm | — | — | — | — | — | — | 1 | — | — | 4 | 2 | 2 | 1 | — | — | 1 | — | — | — |
Temp °C | 25 | 26 | 26 | 25 | 25 | 25 | 25 | 26 | 26 | 25 | 26 | 27 | 26 | 27 | 28 | 26 | 27 | 27 | 27 |
Feels °C | 24 | 25 | 25 | 24 | 24 | 24 | 25 | 26 | 26 | 26 | 27 | 27 | 29 | 30 | 31 | 28 | 27 | 26 | 27 |
Swell 1 Height (m) Direction Period (s) | E 14 | E 13 | E 13 | E 15 | E 15 | E 15 | E 14 | E 14 | E 13 | E 13 | E 13 | ENE 13 | ENE 11 | ENE 10 | ENE 9 | W 19 | WSW 18 | E 16 | E 15 |
65 | 56 | 54 | 106 | 339 | 610 | 687 | 700 | 905 | 1121 | 1838 | 3560 | 2734 | 579 | 524 | 7 | 31 | 47 | 112 | |
Swell 2 Height (m) Direction Period (s) | ENE 9 | SW 19 | E 16 | E 12 | SW 17 | SSW 16 | SW 16 | SW 16 | SW 15 | SW 14 | — | — | — | N 8 | SW 4 | SW 13 | E 18 | WSW 18 | N 9 |
8 | 15 | 20 | 46 | 45 | 25 | 10 | 9 | 9 | 8 | — | — | — | 115 | 3 | 6 | 7 | 30 | 14 | |
Swell 3 Height (m) Direction Period (s) | WSW 16 | SW 16 | SW 18 | SW 18 | — | — | — | — | — | — | — | — | — | S 13 | SW 14 | E 19 | N 10 | N 10 | WSW 17 |
26 | 10 | 51 | 49 | — | — | — | — | — | — | — | — | — | 4 | 8 | 7 | 2 | 7 | 27 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | NE 8 | NE 8 | NE 8 | ENE 8 | ENE 7 | NE 7 | NE 8 | NE 7 | NNE 7 | NNE 7 | — | — | — | — | ENE 8 | E 8 | E 8 | E 8 |
310 | 378 | 388 | 378 | 314 | 329 | 235 | 223 | 179 | 173 | 131 | — | — | — | — | 449 | 308 | 300 | 329 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 14 | 20 | 20 | 20 | 20 | 20 | 5 | 20 | 20 | 20 | 20 | 35 | 0 | 0 | 0 | 14 | 20 | 14 | 14 |
Best forecast wave conditions in Maui | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.










