Surf Forecasts:
Rivermouth_Wailuku surf forecast from 9 Jul 2026:
- Most powerful swell: Sunday 12 Jul, 11PM (local time) - 6ft (1.9m), 8s period, ENE swell with 476 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 1.9m 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 (1.9m) 8s |
Table - best surf conditions forecast for Rivermouth_Wailuku over the next 16 days.
Alright, Rusty here. Let’s call it like it is: for Rivermouth Wailuku, the next 16 days are a tough watch for anyone looking to paddle out. From Thursday, 9 July, right through the period, it’s all poor surf conditions.
Water temp is 26.2° – about normal for the season. But the wind is the killer. Almost every session has a cross-onshore breeze from the ENE or NE, blowing 9 to 16 mph, making the surface choppy and ugly. Swell heights run from about 4.3 ft to 6.6 ft, but the period is short – mostly 7 or 8 seconds. That’s junky windswell. The combined swell energy hits moderate levels, peaking at 774 near the end of the month, but it’s all energy with no quality. The swell direction is off for this break anyway; we need it from the NNE.
When the swell does get longer period – like 18 seconds on 20 July or 16 seconds on the 21st – the wind is still cross-onshore, and the direction is still wrong. That long-period groundswell would be magic on the right reef, but here it’s going to be a fast, bumpy, and disappointing mess.
Honestly, this whole stretch looks more like a kiteboarding forecast than a surf forecast. That consistent cross-onshore wind and blown-out faces are perfect for kites, not paddle surfing. The only half-interesting moment might be the morning of Wednesday, 22 July, when we get an “on” wind from the NE at 9 mph – the closest we get to offshore. The swell drops to 2.6 ft with a 14-second period. It could be clean for a tiny log, but it’s not worth the drive.
It’s a long, dry spell. Forecasts can shift, but right now, Rivermouth Wailuku has nothing on offer for us.
Short Range ForecastSome drizzle, heaviest during Sat morning. Warm (max 26°C on Thu morning, min 24°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Tue afternoon. Warm (max 26°C on Sun morning, min 23°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | |||||||||||||||
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 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | ENE 8 | ENE 8 | NNE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 8 | E 7 | E 7 | ENE 7 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 336 | 336 | 305 | 280 | 265 | 251 | 343 | 286 | 186 | 447 | 432 | 223 | 362 | 310 | 265 | 228 | 240 | 131 | 157 | 210 | 256 |
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 | 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 | 4:02PM0.91m | 3:17AM0.43m | ||||||||
Low Tide | 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 | 10:46PM0.22m | |||||||||
 |  |  | | | |  | | | | | | | | | | | | | | | |
 | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — |
 | — | 7:10 | — | — | 7:10 | — | — | 7:09 | — | — | 7:09 | — | — | 7:09 | — | — | 7:09 | — | — | 7:09 | — |
mm | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — |
Temp °C | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 24 | 26 | 26 | 24 | 25 | 25 | 25 | 26 | 26 | 25 |
Feels °C | 27 | 26 | 25 | 26 | 26 | 25 | 25 | 25 | 25 | 26 | 25 | 23 | 25 | 26 | 24 | 25 | 25 | 25 | 26 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | W 15 | W 14 | W 13 | W 13 | W 14 | W 13 | W 14 | WSW 18 | NNE 7 | WSW 16 | SW 16 | NNE 8 | SW 16 | SW 15 | W 14 | WNW 16 | WNW 16 | NNE 8 | NNE 7 | W 15 | W 15 |
| kJ | 4 | 4 | 4 | 13 | 16 | 13 | 35 | 30 | 66 | 53 | 65 | 187 | 39 | 35 | 15 | 51 | 53 | 88 | 62 | 109 | 109 |
Swell 2 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 14 | W 21 | SW 21 | WSW 19 | WSW 19 | W 14 | WSW 18 | W 13 | W 12 | WSW 16 | W 12 | W 16 | WSW 14 | SW 14 | W 14 | WNW 15 | W 15 | WSW 18 | WSW 16 |
| kJ | 7 | 7 | 8 | 9 | 17 | 37 | 34 | 15 | 60 | 13 | 12 | 49 | 12 | 19 | 21 | 8 | 33 | 73 | 112 | 30 | 25 |
Swell 3 Height (m) Direction Period (s) | — | W 18 | W 16 | W 18 | S 12 | NE 9 | — | — | W 13 | — | — | W 12 | W 20 | NW 20 | WNW 18 | WSW 19 | SW 14 | WSW 17 | WSW 18 | — | W 19 |
| kJ | — | 6 | 5 | 6 | 3 | 3 | — | — | 30 | — | — | 11 | 7 | 15 | 31 | 37 | 8 | 29 | 30 | — | 7 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | ENE 8 | ENE 8 | E 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 8 | E 7 | E 7 | ENE 7 | ENE 7 |
| kJ | 336 | 336 | 305 | 280 | 265 | 251 | 343 | 286 | 186 | 447 | 432 | 223 | 362 | 310 | 265 | 228 | 240 | 131 | 157 | 210 | 256 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 14 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 14 | 14 | 20 | 20 | 14 | 20 | 14 | 14 | 14 | 14 | 14 | 20 | 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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