Surf Forecasts:
Rivermouth_Wailuku surf forecast from 5 Aug 2026:
- Most powerful swell: Sunday 9 Aug, 5PM (local time) - 6ft (1.8m), 8s period, ENE swell with 384 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 (Aug 09) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 12s period and expected on Wednesday (Aug 05) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5PM (Sun 9th Aug) | 6ft (1.8m) 8s |
Table - best surf conditions forecast for Rivermouth_Wailuku over the next 16 days.
The Lowdown
G'day, it's Rusty. Look, I've got to be straight with you – the next 16 days are a write-off for Rivermouth Wailuku. There's not a single decent wave in the window. The whole stretch from Wednesday the 5th of August right through to Thursday the 20th of August is showing nothing but "poor surf conditions" and zero scores. A full 16-day blank run.
The problem is relentless ENE cross-onshore winds. They're blowing at 9 to 15 mph every day, keeping the surface messy and choppy. The swell height builds from 4 ft up to 7 ft by the 16th, and the combined energy climbs into strong territory, peaking at 734 (moderate to strong wave energy), but it's all wind-affected junk. The period is short, mostly 7 to 8 seconds, so there's no real push or shape.
The water temp is a pretty normal 80°F – about average for this time of year, so no surprises there.
This setup looks more interesting for kite surfing than paddle surfing. There's just no clean, rideable wave coming together. It's a tough run, but for this area, a spell of poor conditions like this isn't unheard of. Forecasts can change, but right now, I'd leave the board at home.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Fri morning, min 24°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Sun afternoon. Warm (max 27°C on Sat morning, min 25°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | |||||||||||||||
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 9 | ENE 9 | NE 8 | ENE 8 | ENE 8 | ENE 4 | ENE 7 | ENE 5 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 193 | 194 | 100 | 172 | 131 | 28 | 102 | 73 | 104 | 143 | 225 | 255 | 356 | 384 | 310 | 244 | 234 | 252 | 222 | 245 | 183 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | 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 | 8:17AM0.53m | 4:59PM0.52m | 10:35AM0.60m | 11:51AM0.70m | 12:37PM0.79m | 10:03PM0.34m | 1:16PM0.86m | 11:50PM0.37m | 1:52PM0.90m | 00:51AM0.42m | 2:25PM0.92m | 1:42AM0.48m | |||||||||
Low Tide | 12:37PM0.46m | 1:32AM0.06m | 2:47AM0.04m | 4:09AM0.00m | 8:44PM0.33m | 5:19AM-0.05m | 8:26PM0.30m | 6:16AM-0.09m | 8:41PM0.26m | 7:05AM-0.11m | 9:02PM0.23m | ||||||||||
 | |  | |  |  | | | | | | | |  |  | | | | | | | |
 | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — |
 | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:59 | — | — | 6:58 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | — | — | — | — | — | — |
Temp °C | 26 | 26 | 25 | 26 | 26 | 25 | 27 | 26 | 26 | 27 | 27 | 25 | 26 | 26 | 25 | 27 | 27 | 26 | 27 | 27 | 26 |
Feels °C | 28 | 28 | 26 | 27 | 27 | 26 | 28 | 27 | 28 | 28 | 27 | 25 | 27 | 27 | 26 | 29 | 28 | 27 | 28 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | NNE 9 | NNE 8 | NE 8 | N 8 | NNW 8 | ENE 7 | NNW 7 | NNW 7 | NE 11 | NE 10 | N 6 | NE 9 | WSW 17 | WSW 16 | NNW 10 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | W 13 |
| kJ | 8 | 7 | 100 | 5 | 7 | 21 | 10 | 5 | 18 | 24 | 3 | 14 | 27 | 26 | 20 | 17 | 16 | 13 | 12 | 6 | 13 |
Swell 2 Height (m) Direction Period (s) | W 12 | W 12 | NNE 8 | W 11 | NNW 8 | NNW 8 | W 11 | NE 12 | NNW 7 | N 7 | WSW 18 | WSW 18 | W 12 | W 11 | W 11 | W 11 | W 11 | W 10 | W 10 | W 10 | NNW 8 |
| kJ | 11 | 11 | 6 | 10 | 6 | 11 | 9 | 23 | 5 | 3 | 31 | 30 | 12 | 10 | 10 | 9 | 9 | 8 | 8 | 8 | 6 |
Swell 3 Height (m) Direction Period (s) | SW 16 | SW 16 | W 12 | NW 8 | W 12 | NE 11 | SW 14 | SW 20 | WSW 19 | WSW 18 | SW 13 | N 6 | N 8 | N 11 | WSW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 19 |
| kJ | 10 | 10 | 11 | 3 | 11 | 5 | 8 | 15 | 37 | 33 | 7 | 3 | 1 | 10 | 25 | 10 | 10 | 9 | 8 | 8 | 15 |
Wind waves Height (m) Direction Period (s) | ENE 9 | ENE 9 | E 3 | ENE 8 | ENE 8 | ENE 4 | ENE 7 | ENE 5 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
| kJ | 193 | 194 | 2 | 172 | 131 | 28 | 102 | 73 | 104 | 143 | 225 | 255 | 356 | 384 | 310 | 244 | 234 | 252 | 222 | 245 | 183 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 5 | 20 | 5 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 20 | 5 | 14 | 20 | 14 |
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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