Surf Forecasts:
Rivermouth_Wailuku surf forecast from 9 Jul 2026:
- Most powerful swell: Monday 13 Jul, 2AM (local time) - 6ft (1.8m), 8s period, ENE swell with 423 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 1.8m 8s and forecast to arrive on Monday (Jul 13) at 2AM. 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 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Mon 13th Jul) | 6ft (1.8m) 8s |
Table - best surf conditions forecast for Rivermouth_Wailuku over the next 16 days.
Alright folks, Rusty here. We’ve got a 16-day look at Rivermouth_Wailuku, and I gotta be straight with you – it’s a tough stretch. The wind is locked in from the ENE, blowing cross-on shore, and it just doesn’t let up. That’s going to keep things choppy and messy for the entire run. The water temp is sitting at 79°, which is pretty much average for this time of year, so nothing weird there.
The first week and a half is a real grind. From Wednesday, July 8th right through to Monday, July 20th, we’re looking at waist to chest-high swell, mostly around 5 ft to 6 ft, with a short, weak period of 7 to 8 seconds. The combined energy is moderate, sitting between 265 and 384 for most of it, but it jumps up to 963 on Saturday, July 18th, and then 1178 that afternoon. Even with that bump in energy, the wind is ruining any chance of a clean wave. It’s just a constant battle with chop. The swell direction is ENE, but the optimum direction for this spot is NNE, so it’s not wrapping in right either.
The second week doesn’t offer much hope. On Tuesday, July 21st, the swell drops off to 2 ft, and the period jumps to 18 seconds. That’s a long-period groundswell, but it’s tiny and the wind is still onshore. The combined energy is 638, which is solid for such a small wave, but it’s just not going to have any shape with the wind. The rest of the week sees the energy fade, with the swell staying under 3 ft and the period dropping from 15 down to 13 seconds. The wind is still there, ruining it.
Folks, I can’t even pick a standout here. Every single session is flagged as poor surf conditions. There’s nothing on offer. If you’re a kite surfer, this constant cross-on wind might look interesting, but for a paddle surfer, it’s a two-week blank. The forecasts can change, but right now, you’re better off finding something else to do.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Thu night. Warm (max 26°C on Wed afternoon, min 24°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Sat afternoon, min 24°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wed 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | |||||||||||||||
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) | ENE 7 | NE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 379 | 196 | 302 | 302 | 319 | 265 | 279 | 310 | 362 | 302 | 209 | 301 | 421 | 423 | 355 | 319 | 227 | 214 | 263 | 231 | 294 |
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 | cross-on |
High Tide | 7:00PM0.48m | 11:52AM0.64m | 12:42PM0.75m | 9:34PM0.37m | 1:26PM0.84m | 11:19PM0.36m | 2:08PM0.90m | 00:31AM0.37m | 2:48PM0.93m | 1:30AM0.39m | 3:26PM0.94m | 2:24AM0.41m | |||||||||
Low Tide | 3:32PM0.46m | 3:32AM0.01m | 4:29AM-0.05m | 8:19PM0.37m | 5:24AM-0.11m | 8:39PM0.33m | 6:18AM-0.15m | 9:08PM0.29m | 7:08AM-0.18m | 9:39PM0.26m | 7:55AM-0.18m | 10:12PM0.24m | 8:40AM-0.15m | ||||||||
 |  |  | |  |  | | | | |  | | | | | | | | | | | |
 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 |
 | 7:10 | — | — | 7:10 | — | — | 7:10 | — | — | 7:09 | — | — | 7:09 | — | — | 7:09 | — | — | 7:09 | — | 7:09 |
mm | — | — | — | — | 1 | 2 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 24 | 25 | 26 | 25 | 26 | 26 | 24 | 25 | 26 | 24 | 26 | 26 | 25 | 26 |
Feels °C | 25 | 25 | 27 | 26 | 25 | 27 | 26 | 23 | 24 | 26 | 25 | 26 | 26 | 23 | 24 | 25 | 24 | 26 | 26 | 25 | 26 |
Swell 1 Height (m) Direction Period (s) | SW 14 | NE 8 | W 15 | W 14 | W 13 | W 13 | W 14 | W 13 | W 14 | WSW 18 | NNE 8 | NNE 8 | SW 16 | WSW 16 | SW 16 | SW 15 | NNE 7 | WNW 16 | WNW 16 | N 7 | W 15 |
| kJ | 8 | 196 | 4 | 4 | 14 | 13 | 16 | 13 | 35 | 61 | 107 | 20 | 65 | 49 | 39 | 35 | 64 | 51 | 53 | 35 | 112 |
Swell 2 Height (m) Direction Period (s) | — | SW 14 | SW 13 | SW 13 | SW 14 | W 21 | SW 21 | WSW 19 | WSW 19 | W 14 | WSW 18 | WSW 16 | W 12 | W 12 | W 12 | W 16 | W 14 | N 8 | W 14 | WNW 15 | WSW 18 |
| kJ | — | 7 | 7 | 7 | 8 | 9 | 17 | 37 | 34 | 15 | 60 | 53 | 12 | 11 | 12 | 19 | 15 | 5 | 33 | 73 | 30 |
Swell 3 Height (m) Direction Period (s) | — | W 15 | — | W 18 | — | W 18 | — | — | — | — | W 13 | W 13 | — | — | W 20 | NW 20 | WSW 14 | SW 14 | SW 14 | WSW 17 | SW 13 |
| kJ | — | 5 | — | 6 | — | 6 | — | — | — | — | 30 | 13 | — | — | 7 | 15 | 21 | 8 | 8 | 29 | 7 |
Wind waves Height (m) Direction Period (s) | ENE 7 | E 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
| kJ | 379 | 193 | 302 | 302 | 319 | 265 | 279 | 310 | 362 | 302 | 209 | 301 | 421 | 423 | 355 | 319 | 227 | 214 | 263 | 231 | 294 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 20 | 14 | 14 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 14 | 20 | 20 | 20 | 14 | 14 | 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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