Surf Forecasts:
Rivermouth_Wailuku surf forecast from 6 Aug 2026:
- Most powerful swell: Sunday 9 Aug, 2PM (local time) - 5.5ft (1.7m), 8s period, ENE swell with 355 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 1.7m 8s and forecast to arrive on Sunday (Aug 09) at 2PM. 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 3s period and expected on Thursday (Aug 06) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Sun 9th Aug) | 5.5ft (1.7m) 8s |
Table - best surf conditions forecast for Rivermouth_Wailuku over the next 16 days.
The Lowdown
Alright, let me break this down for you. It's Rusty here.
Rivermouth_Wailuku has a tough run ahead. The whole 16-day window is filled with poor surf conditions. Honestly, it's a bit of a bummer.
We kick off Wednesday the 5th of August with some small swell around 4ft from the ENE, with a period of 9 seconds. The combined energy is only moderate at 215. But the wind is out of the NE at 9 mph, which is a cross-onshore breeze, and that's making the surface fairly choppy. It's just not clean. This pattern of cross-onshore wind and poor conditions sticks with us day after day, right through to the end of the forecast on the 20th.
The water temperature is 80°F, which is about average for this time of year. Not too different.
The swell tries to build a bit around the 14th of August, with heights reaching 5ft to 5ft, and by the 16th and 17th we see 6ft. The combined energy jumps up into the strong range, hitting 562 on the 17th morning. But that cross-onshore wind just won't let up. It's a constant ENE breeze, sometimes picking up to 16 mph, which just chops everything up. The period sits mostly around 7-9 seconds, so it's not a long-period groundswell that could save the day. It's all poor surf.
There are literally no standout sessions here. The whole forecast is a big, flat, choppy mess. If you were hoping for a clean wave at Rivermouth_Wailuku, you're out of luck for the next two weeks. For a spot that's a fairly consistent reef setup, this is a real dry spell.
Hang in there. Forecasts change. But right now, I'm not telling you to go.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Wed morning, min 24°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sun morning. 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 | ENE 8 | ENE 8 | ENE 8 | NE 8 | ENE 5 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | E 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 207 | 194 | 108 | 172 | 131 | 28 | 44 | 67 | 135 | 147 | 176 | 255 | 336 | 308 | 258 | 199 | 199 | 193 | 136 | 136 | 146 |
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 | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 26 | 27 | 27 | 25 | 26 | 27 | 25 | 27 | 27 | 26 | 27 | 27 | 26 |
Feels °C | 28 | 28 | 26 | 27 | 27 | 26 | 27 | 28 | 27 | 27 | 26 | 25 | 27 | 28 | 26 | 29 | 29 | 27 | 28 | 28 | 27 |
Swell 1 Height (m) Direction Period (s) | NNE 9 | NNE 8 | ENE 8 | N 8 | NNW 8 | NE 8 | ENE 7 | NE 7 | NE 11 | NE 10 | NE 9 | NE 9 | NE 9 | NE 9 | NNW 10 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | NNW 7 |
| kJ | 8 | 7 | 108 | 5 | 7 | 28 | 34 | 24 | 18 | 24 | 26 | 14 | 14 | 13 | 20 | 16 | 16 | 13 | 12 | 6 | 5 |
Swell 2 Height (m) Direction Period (s) | W 12 | W 12 | NNE 8 | W 11 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | NNW 7 | N 7 | N 6 | WSW 18 | WSW 17 | N 11 | NE 9 | NE 8 | W 10 | W 10 | W 10 | W 10 | W 10 |
| kJ | 11 | 11 | 6 | 10 | 6 | 11 | 10 | 5 | 5 | 3 | 3 | 30 | 27 | 10 | 12 | 11 | 8 | 8 | 8 | 8 | 8 |
Swell 3 Height (m) Direction Period (s) | SW 16 | SW 16 | W 12 | NW 8 | W 12 | NE 11 | W 11 | NE 12 | WSW 19 | WSW 18 | WSW 18 | N 6 | W 12 | WSW 16 | W 11 | W 11 | SW 16 | SW 15 | SW 15 | SW 14 | SW 19 |
| kJ | 10 | 10 | 11 | 3 | 11 | 5 | 9 | 23 | 37 | 33 | 31 | 3 | 12 | 26 | 9 | 9 | 10 | 9 | 8 | 8 | 15 |
Wind waves Height (m) Direction Period (s) | ENE 9 | ENE 9 | ESE 3 | ENE 8 | ENE 8 | ENE 4 | ENE 5 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | E 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 |
| kJ | 207 | 194 | 4 | 172 | 131 | 27 | 44 | 67 | 135 | 147 | 176 | 255 | 336 | 308 | 258 | 199 | 199 | 193 | 136 | 136 | 146 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 5 | 12 | 5 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 20 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 5 | 14 | 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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