Surf Forecasts:
Rivermouth_Wailuku surf forecast from 15 Jul 2026:
- Most powerful swell: Saturday 18 Jul, 11PM (local time) - 5ft (1.6m), 8s period, E swell with 349 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 8s and forecast to arrive on Saturday (Jul 18) 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 0.5m 15s period and expected on Wednesday (Jul 15) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Sat 18th Jul) | 5ft (1.6m) 8s |
Table - best surf conditions forecast for Rivermouth_Wailuku over the next 16 days.
The Lowdown
Alright crew, Rusty here, talkin' feet and miles per hour. This 16-day look is a tough one. For the first 12 days, there’s absolutely nothing doin'. The only spot in the game is Rivermouth_Wailuku, a reef break, and it’s gettin' a big fat zero every day until the 26th of July. The wind is all cross-on, and the wave report is just "poor surf conditions". A proper dry spell.
The water sits at 79°F, dead average for the season.
The one and only chance comes on the 26th of July. Sunday afternoon flips the script. Swell comes from the NE at 3ft, but the period jumps to 14 seconds—that’s real groundswell. The combined energy reads 659, which is solid. The wind is glassy, straight onshore from the NE at 9 mph, making it clean as a whistle. For a reef, that long-period NE swell is the ticket. It’s a bit small for the punch, but the lines will be sweet. Fair warning: crowds are common here, so you won’t be alone. Still, it’s the only real window.
The 27th still has that long-period energy (15 seconds!) but the wind goes cross-on, so it’ll get messy. After that, it’s back to the same old junk.
If you’re holdin’ out, keep your eyes on Sunday the 26th afternoon. That’s the one. Everything else is a wash.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Wed afternoon. Warm (max 26°C on Thu morning, min 24°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Sat morning, min 24°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tue 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | NE 8 | NE 7 | NE 7 | ENE 7 | NE 7 | E 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | E 6 | E 6 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | E 7 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 223 | 121 | 132 | 117 | 136 | 88 | 151 | 115 | 82 | 163 | 101 | 141 | 287 | 349 | 273 | 238 | 191 | 181 | 177 | 79 | 128 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | 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 | 3:26PM0.94m | 2:24AM0.41m | 4:02PM0.91m | 3:17AM0.43m | 4:36PM0.86m | 4:10AM0.44m | 5:06PM0.79m | 5:09AM0.44m | 5:32PM0.71m | 6:19AM0.44m | 5:51PM0.62m | 7:53AM0.45m | 6:01PM0.55m | 10:04AM0.50m | |||||||
Low Tide | 10:12PM0.24m | 8:40AM-0.15m | 10:46PM0.22m | 9:23AM-0.08m | 11:19PM0.20m | 10:04AM0.02m | 11:52PM0.18m | 10:44AM0.13m | 00:26AM0.16m | 11:26AM0.26m | 1:00AM0.14m | 12:18PM0.37m | 1:38AM0.12m | ||||||||
 |  | |  | | | | | | | | | | | | | | |  | | | |
 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 |
 | 7:09 | — | — | 7:09 | — | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — | — | 7:08 | — | — | 7:08 | — | 7:07 |
mm | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 27 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 |
Feels °C | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 26 | 27 | 26 | 26 | 27 | 25 | 25 | 26 | 26 | 25 | 27 | 27 | 26 | 27 |
Swell 1 Height (m) Direction Period (s) | WNW 16 | NE 7 | ENE 7 | N 8 | W 15 | NNE 7 | W 14 | N 7 | NNE 7 | WNW 14 | NNE 7 | N 7 | N 7 | NNE 8 | W 12 | W 12 | W 12 | W 12 | W 12 | NNE 7 | E 13 |
| kJ | 53 | 121 | 66 | 43 | 109 | 43 | 103 | 28 | 29 | 63 | 40 | 25 | 26 | 21 | 11 | 11 | 11 | 10 | 11 | 32 | 31 |
Swell 2 Height (m) Direction Period (s) | W 14 | WNW 15 | N 7 | W 15 | WSW 16 | W 14 | WSW 17 | WNW 14 | WNW 14 | SW 16 | WNW 13 | WNW 13 | WNW 13 | WNW 13 | W 20 | W 20 | SW 19 | SW 18 | SW 18 | E 15 | E 11 |
| kJ | 33 | 73 | 39 | 109 | 25 | 106 | 29 | 67 | 66 | 10 | 60 | 34 | 34 | 33 | 8 | 7 | 14 | 13 | 12 | 17 | 10 |
Swell 3 Height (m) Direction Period (s) | SW 14 | E 8 | W 15 | WSW 18 | W 19 | WSW 16 | W 17 | WSW 17 | SW 16 | SW 12 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | S 14 | S 13 | S 12 | E 16 | SW 17 | SW 17 |
| kJ | 8 | 18 | 112 | 31 | 7 | 26 | 6 | 29 | 10 | 5 | 10 | 9 | 8 | 8 | 7 | 4 | 4 | 3 | 5 | 11 | 11 |
Wind waves Height (m) Direction Period (s) | NE 8 | — | NE 7 | ENE 7 | NE 7 | E 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | E 6 | E 6 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | E 7 | ENE 7 |
| kJ | 223 | — | 132 | 117 | 136 | 88 | 151 | 115 | 82 | 163 | 101 | 141 | 287 | 349 | 273 | 238 | 191 | 181 | 177 | 79 | 128 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 14 | 5 | 5 | 5 | 5 | 14 | 14 | 14 | 14 | 14 | 14 | 20 | 14 | 14 | 14 | 14 | 5 | 14 | 5 | 5 | 5 |
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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