Surf Forecasts:
Rivermouth_Wailuku surf forecast from 13 Jul 2026:
- Most powerful swell: Sunday 12 Jul, 11PM (local time) - 6ft (1.8m), 8s period, ENE swell with 392 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 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 (Sun 12th Jul) | 6ft (1.8m) 8s |
Table - best surf conditions forecast for Rivermouth_Wailuku over the next 16 days.
Alright, Rusty here. Let's talk about the local surf scene for the next couple of weeks.
Honestly, it's a bit of a tough stretch ahead for Rivermouth_Wailuku. The entire first week and a half is looking pretty grim with persistent cross-onshore winds and messy, poor surf conditions. There are no real standout sessions to get excited about until the very end of the forecast period.
We start off with the water temp at a pretty normal 79°, nothing unusual there. But the surf just isn't cooperating. From Sunday the 12th right through to Saturday the 25th of July, every single session is rated as poor. We're dealing with moderate breezes from the ENE and NE, blowing cross-on shore, making everything choppy and bumpy. Wave heights bump around from 2ft up to 6ft, but with that onshore wind, it's just a mess. The swell energy during this period is mostly moderate, running between 128 and 432 (combined energy), but it doesn't matter when the wind is that bad. For the most part, the period is short too, around 6 to 8 seconds, so the waves lack punch.
The first glimpse of something better doesn't show up until Monday the 27th of July. The wind clocks around to a gentle NE breeze and actually flips to offshore by the afternoon. Now we're talking. The swell is still small, around 4ft, but it's coming from the east with a very long period of 15 seconds. That's a proper groundswell. The combined energy jumps up into the strong range, hitting 901 and 943. This sets up Rivermouth_Wailuku (reef) best for an optimum swell from the NNE.
So, if you're holding out for something clean, that Monday the 27th of July is the one window. The waves might not be huge, but with offshore winds and that long period groundswell, the shape should be there. Expect long gaps between sets, but the waves that come through will have real push. This is a reef break, so that long period should wrap in nicely. Keep in mind it can get crowded here though, as it's often busy.
For the rest of the time, with that persistent cross-onshore wind and poor conditions, this setup honestly looks more interesting for kite surfing than paddle surfing, especially when the swell is around 5ft to 6ft and choppy.
Stay patient, that Monday the 27th might be worth the wait.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Mon night. Warm (max 26°C on Sun afternoon, min 23°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Wed afternoon. Warm (max 27°C on Sat morning, min 24°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sun 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | |||||||||||||||
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 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | NE 8 | NE 8 | NE 7 | NE 7 | ENE 7 | E 6 | E 6 | E 6 | ENE 7 | E 6 | E 6 | E 7 | E 8 | E 8 | ENE 8 | ENE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 432 | 382 | 319 | 277 | 120 | 200 | 200 | 176 | 128 | 99 | 78 | 102 | 108 | 117 | 78 | 88 | 206 | 318 | 355 | 341 | 246 |
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 | 2:08PM0.90m | 00:31AM0.37m | 2:48PM0.93m | 1:30AM0.39m | 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 | |||||||
Low Tide | 9:08PM0.29m | 7:08AM-0.18m | 9:39PM0.26m | 7:55AM-0.18m | 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 | |||||||
 |  | | |  |  |  |  | | | | | | | | | | | | | | |
 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 |
 | 7:09 | — | — | 7:09 | — | — | 7:09 | — | — | 7:09 | — | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — | 7:08 |
mm | — | — | — | — | 1 | — | 2 | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 24 | 26 | 26 | 24 | 25 | 25 | 25 | 26 | 25 | 25 | 26 | 26 | 25 | 26 | 26 | 26 | 27 | 27 | 26 | 26 |
Feels °C | 26 | 23 | 25 | 25 | 24 | 27 | 26 | 26 | 27 | 26 | 26 | 26 | 25 | 25 | 28 | 27 | 29 | 28 | 27 | 27 | 26 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SW 15 | NNE 7 | WNW 16 | WNW 16 | NE 7 | W 15 | NNE 8 | NNE 8 | NNE 8 | NNE 7 | NNE 8 | NNE 8 | NNE 7 | N 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 |
| kJ | 65 | 40 | 39 | 35 | 70 | 51 | 53 | 176 | 112 | 44 | 65 | 50 | 30 | 21 | 44 | 30 | 27 | 18 | 17 | 18 | 11 |
Swell 2 Height (m) Direction Period (s) | W 12 | W 12 | W 12 | W 16 | W 14 | SW 14 | W 14 | WNW 15 | SW 18 | W 15 | W 15 | W 14 | WNW 14 | WNW 14 | WNW 14 | WNW 14 | WNW 13 | WNW 13 | WNW 13 | WNW 13 | W 12 |
| kJ | 12 | 11 | 11 | 19 | 15 | 8 | 33 | 73 | 48 | 109 | 109 | 106 | 67 | 67 | 66 | 64 | 35 | 34 | 34 | 17 | 11 |
Swell 3 Height (m) Direction Period (s) | — | — | W 20 | NW 20 | WSW 14 | WSW 19 | SW 14 | WSW 17 | W 21 | WSW 18 | WSW 16 | WSW 16 | SW 17 | SSW 12 | SSW 11 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | W 20 |
| kJ | — | — | 8 | 15 | 21 | 37 | 8 | 29 | 9 | 30 | 25 | 26 | 47 | 14 | 12 | 10 | 10 | 9 | 8 | 8 | 8 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | NE 8 | NE 8 | — | NE 7 | ENE 7 | E 6 | E 6 | E 6 | ENE 7 | E 6 | E 6 | E 7 | E 8 | E 8 | ENE 8 | ENE 8 |
| kJ | 432 | 382 | 319 | 277 | 120 | 200 | 200 | — | 128 | 99 | 78 | 102 | 108 | 117 | 78 | 88 | 206 | 318 | 355 | 341 | 246 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 20 | 20 | 20 | 14 | 5 | 12 | 14 | 5 | 5 | 14 | 5 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 20 |
Best forecast wave conditions in Maui | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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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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