Surf Forecasts:
Rivermouth_Wailuku surf forecast from 8 Jul 2026:
- Most powerful swell: Sunday 12 Jul, 8PM (local time) - 6ft (1.8m), 8s period, ENE swell with 412 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 Sunday (Jul 12) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 16s period and expected on Sunday (Jul 12) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Sun 12th Jul) | 6ft (1.8m) 8s |
Table - best surf conditions forecast for Rivermouth_Wailuku over the next 16 days.
Alright, let’s chew through what we got for Rivermouth_Wailuku. Honestly, it’s a rough stretch ahead. The wind is punishing – nothing but ENE or NE cross-onshore winds locking in day after day, and it’s killing any chance of a decent wave. Water temp is about 79°, which is totally normal for this time of year, nothing out of the ordinary.
You’ve got moderate wave energy in the 200s to 500s range, but the period is short, mostly 7 to 8 seconds, so it’s just messy windswell. On the 21st and 22nd, the combined energy jumps up into the 800s and 600s with a period of 15 to 17 seconds, so there’s real groundswell there. But it doesn’t matter – the wind is still cross-onshore and trashy, and at a reef like this, those long-period waves will be too fast and straight, just closing out in the chop.
The swell direction is ENE or E the whole time, while this spot really wants NNE. So the angle is off. Swell heights run from about 2 ft up to 7 ft, so there’s some push, but the quality is shot. From the 8th of July all the way to the 23rd, it’s nothing but “poor surf conditions.” No standout days. Not a single one. If you’re a kite surfer, that constant onshore breeze might get you stoked, but for anyone wanting to paddle out, this is a total dud. A long, blank stretch with nothing to recommend.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Thu night. Warm (max 26°C on Wed morning, min 24°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Sat morning. Warm (max 26°C on Sun morning, min 23°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | |||||||||||||||
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 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 8 | NNE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 344 | 405 | 372 | 302 | 294 | 310 | 265 | 279 | 334 | 387 | 334 | 251 | 327 | 354 | 402 | 336 | 294 | 263 | 234 | 240 | 106 |
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 | 10:41AM0.53m | 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 | |||||||||
 | |  | |  |  |  | |  | | | | | | | | | | | | | |
 | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — |
 | — | 7:10 | — | — | 7:10 | — | — | 7:10 | — | — | 7:09 | — | — | 7:09 | — | — | 7:09 | — | — | 7:09 | — |
mm | — | — | — | — | — | 1 | 1 | — | — | 2 | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 25 | 25 | 25 | 26 | 26 | 25 | 25 | 26 | 24 | 26 | 26 | 25 |
Feels °C | 25 | 25 | 25 | 26 | 26 | 25 | 27 | 27 | 25 | 24 | 25 | 25 | 26 | 25 | 25 | 24 | 25 | 24 | 26 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | W 15 | W 14 | W 13 | W 13 | W 14 | W 13 | W 14 | WSW 18 | NNE 8 | SW 16 | SW 16 | WSW 16 | SW 16 | SW 15 | W 14 | WNW 16 | WNW 16 | NNE 8 |
| kJ | 8 | 8 | 7 | 4 | 4 | 4 | 13 | 16 | 13 | 35 | 61 | 75 | 69 | 65 | 49 | 39 | 35 | 15 | 51 | 53 | 81 |
Swell 2 Height (m) Direction Period (s) | — | — | W 16 | SW 13 | SW 13 | SW 14 | W 21 | SW 21 | WSW 19 | WSW 19 | W 14 | WSW 18 | W 13 | W 12 | W 12 | W 12 | W 16 | WSW 14 | N 8 | W 14 | WNW 15 |
| kJ | — | — | 5 | 7 | 7 | 8 | 9 | 17 | 37 | 34 | 15 | 60 | 13 | 12 | 11 | 12 | 19 | 21 | 6 | 32 | 73 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | W 18 | W 16 | W 18 | — | — | — | — | W 13 | — | W 12 | — | W 20 | NW 20 | WNW 18 | WSW 14 | SW 14 | WSW 17 |
| kJ | — | — | — | — | 6 | 5 | 6 | — | — | — | — | 30 | — | 3 | — | 8 | 15 | 31 | 20 | 8 | 29 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 8 | E 7 |
| kJ | 344 | 405 | 372 | 302 | 294 | 310 | 265 | 279 | 334 | 387 | 334 | 251 | 327 | 354 | 402 | 336 | 294 | 263 | 234 | 240 | 106 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 14 | 14 | 14 | 14 | 14 | 20 | 14 | 20 | 14 | 20 | 20 | 20 | 14 | 20 | 14 | 20 | 20 | 5 | 14 | 20 | 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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