Surf Forecasts:
Rivermouth_Wailuku surf forecast from 24 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 8AM (local time) - 10ft (3.0m), 10s period, NE swell with cross-offshore winds.
- Most powerful swell: Tuesday 28 Jul, 11PM (local time) - 10ft (3.0m), 12s period, ENE swell with 2,493 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 8AM (local time) - 10ft (3.0m), 10s period with NE 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 8AM. The primary swell is predicted to be 3.0m and 10s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Rivermouth_Wailuku in the next 16 days are 3.0m 12s and forecast to arrive on Tuesday (Jul 28) at 11PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 3s period and expected on Wednesday (Jul 29) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Wed 29th Jul) | 10ft (3.0m) 10s |
| Best Surf | 8AM (Wed 29th Jul) | 10ft (3.0m) 10s |
| Most Powerful | 11PM (Tue 28th Jul) | 10ft (3.0m) 12s |
Table - best surf conditions forecast for Rivermouth_Wailuku over the next 16 days.
The Lowdown
Alright folks, Rusty here again, but in feet and miles now. Let’s talk about the same stretch for Rivermouth_Wailuku (Wailuku). It’s a grim one for the most part.
From Friday 24th through Tuesday 28th, it’s just a battle with cross-onshore wind. Friday and Saturday, 24th and 25th, you’ve got about 6 feet of messy, short-period junk (7 to 8 seconds) and energy is weak to moderate (330 to 427). Don’t even bother. Sunday 26th brings a longer-period groundswell from the east (15 seconds) but with that ENE wind blowing cross-onshore, it’s still choppy. Combined energy picks up to 674 to 803, but with only 3 to 4 feet of swell and the wrong wind, it’s not clean. Monday and Tuesday have a nice offshore wind in the mornings, but the surf still isn’t rated good. Tuesday 28th even has a risk of t-storms.
Now, the one day that shines like a diamond in a cow patty is Wednesday 29th July. That’s the morning to be out. We’ve got a clean 8 feet of northeast swell with a 10-second period, and the wind is light offshore from the SSW. That means glassy, lined-up waves. Combined energy is a strong 1133. This is expert territory – anything over 8 feet is big, and 8 feet is pushing it for anyone who isn’t skilled. Rivermouth_Wailuku is a reef, fairly consistent, and the swell direction is right in that NNE sweet spot the spot loves. Expect crowds though – this spot gets often busy. The afternoon also looks very good with a 6-foot swell and a light cross-offshore breeze, but the morning is the real gem.
After that golden Wednesday, it’s back to the grind. Thursday 30th, Friday 31st July, and Saturday 1st August all look like poor, choppy cross-onshore slop. Then on Sunday 2nd August, we get another long-period groundswell (16 seconds) from the east, with combined energy over 1000, but it’s only 4 feet and the wind is still cross-onshore from the ENE – marginal at best.
The rest of the first week of August is just tiny, weak, and messy – 3 feet or less, periods down to 6 seconds, and energy dropping off to 128. Nothing to get excited about.
So the verdict: most of this 16-day window is a dud. Mark your calendar for Wednesday 29th July. Get out there in the morning for the cleanest, biggest waves of the forecast. After that, you’re waiting on a change that’s not in this run. I’m not optimistic for the second week – it’s small, weak, and windy. But, hey, forecasts shift.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Sat night. Warm (max 27°C on Fri afternoon, min 23°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Mon night. Warm (max 28°C on Wed morning, min 24°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | |||||||||||||||
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 7 | ENE 7 | ENE 7 | NE 8 | NE 8 | ENE 8 | NE 8 | E 15 | E 14 | E 14 | E 14 | E 13 | E 13 | E 13 | ENE 11 | NE 10 | ENE 9 | ENE 8 | E 8 | E 8 | E 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 301 | 301 | 250 | 353 | 353 | 403 | 339 | 506 | 687 | 604 | 932 | 976 | 1514 | 2088 | 2256 | 1133 | 553 | 330 | 308 | 329 | 292 |
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 | on | on | cross-on | on | on | cross-on | off | cross-off | cross-on | cross-on | cross-on | cross-on |
High Tide | 1:01PM0.69m | 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 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — |
 | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:06 | — | — | 7:05 | — | — | 7:05 | — |
mm | — | — | — | — | — | 3 | — | 1 | — | — | — | 4 | 2 | 2 | — | — | — | — | — | — | — |
Temp °C | 26 | 27 | 25 | 26 | 26 | 25 | 26 | 25 | 25 | 26 | 27 | 25 | 26 | 27 | 25 | 28 | 28 | 27 | 27 | 28 | 26 |
Feels °C | 24 | 26 | 24 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 28 | 25 | 27 | 28 | 25 | 30 | 31 | 29 | 26 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | WSW 18 | E 16 | E 14 | E 13 | E 13 | E 15 | E 15 | E 15 | E 14 | E 14 | E 14 | E 13 | E 13 | E 13 | ENE 11 | NE 10 | ENE 9 | W 4 | WSW 18 | WSW 18 | N 9 |
| kJ | 31 | 44 | 65 | 56 | 54 | 106 | 339 | 506 | 687 | 604 | 932 | 976 | 1514 | 2088 | 2256 | 1133 | 553 | 1 | 31 | 30 | 15 |
Swell 2 Height (m) Direction Period (s) | NNW 9 | SW 17 | ENE 9 | SW 19 | E 16 | E 12 | SW 17 | SSW 16 | SW 16 | SW 16 | SW 15 | SW 14 | — | NNE 9 | — | S 14 | SW 14 | W 19 | N 10 | N 10 | WSW 17 |
| kJ | 8 | 47 | 8 | 15 | 20 | 46 | 45 | 25 | 10 | 9 | 9 | 8 | — | 217 | — | 4 | 8 | 7 | 2 | 8 | 27 |
Swell 3 Height (m) Direction Period (s) | E 16 | NNW 8 | WSW 16 | SW 16 | SW 18 | SW 18 | — | — | — | — | — | — | — | — | — | W 21 | W 20 | SW 13 | S 12 | E 16 | E 18 |
| kJ | 21 | 7 | 26 | 10 | 51 | 49 | — | — | — | — | — | — | — | — | — | 8 | 7 | 6 | 3 | 5 | 24 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | NE 8 | NE 8 | ENE 8 | NE 8 | ENE 7 | NE 7 | NE 8 | NE 7 | NNE 7 | NNE 9 | — | — | SW 3 | — | ENE 8 | E 8 | E 8 | E 8 |
| kJ | 301 | 301 | 250 | 353 | 353 | 403 | 335 | 297 | 235 | 223 | 167 | 155 | 202 | — | — | 11 | — | 330 | 308 | 329 | 292 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 20 | 20 | 14 | 14 | 20 | 20 | 20 | 20 | 20 | 12 | 20 | 5 | 20 | 35 | 14 | 0 | 0 | 14 | 14 | 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.
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