Surf Forecasts:
Kahului Harbor surf forecast from 11 Jul 2026:
- Most powerful swell: Sunday 12 Jul, 11AM (local time) - 6ft (1.9m), 8s period, ENE swell with 410 kJ wave energy.
Best Forecast Surf Conditions for Kahului Harbor this week:
The most powerful waves expected at Kahului Harbor in the next 16 days are 1.9m 8s and forecast to arrive on Sunday (Jul 12) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 6s period and expected on Thursday (Jul 16) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Sun 12th Jul) | 6ft (1.9m) 8s |
Table - best surf conditions forecast for Kahului Harbor over the next 16 days.
Alright, let’s talk in feet and miles per hour. Rusty here.
The first real chance to get wet is Wednesday, 15 July in the morning. The swell is running about 4ft from the ENE, with a short 7-second period, and the wind is side-shore. The energy is weak (301). It’s marginal at best, and you’d have to be pretty keen to make it work. Water temp is about 79°, which is normal for the time of year.
To be honest, the whole 16-day run is a bit of a grind. The best of the bunch comes Sunday morning, 26 July, with a swell around 6ft from the ENE, an 8-second period, and moderate energy (435). The wind is side-shore with only a slight chop, which is the cleanest we get. The catch is the swell direction is ENE, and the spot wants it from the NNE, so it won’t be perfect. It’s a reef break, advanced only, and crowds are "sometimes," so you might have a few company.
The rest of the stretch is mostly cross-onshore wind, short-period junk, and poor conditions. There’s a gap of nearly two weeks between the first marginal day and the best one. It’s one of those quiet stretches for the area.
Stay patient, and check the forecasts. It’ll turn around.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Sat morning, min 23°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Wed afternoon. Warm (max 26°C on Thu morning, min 24°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||
Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | |||||||||||||||
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 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | NE 8 | NE 8 | ENE 7 | ENE 7 | ENE 7 | NNE 7 | E 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 286 | 278 | 263 | 410 | 392 | 382 | 319 | 285 | 142 | 210 | 229 | 207 | 173 | 121 | 93 | 56 | 133 | 98 | 110 | 154 | 152 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on |
High Tide | 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 | 4:36PM0.86m | 4:10AM0.44m | 5:06PM0.79m | ||||||||
Low Tide | 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 | 9:23AM-0.08m | 11:19PM0.20m | 10:04AM0.02m | 11:52PM0.18m | ||||||||
 | |  | | | | | | | |  | | |  |  | | | | | | | |
 | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — |
 | — | 7:09 | — | — | 7:09 | — | — | 7:09 | — | — | 7:09 | — | — | 7:09 | — | — | 7:09 | — | — | 7:08 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | 1 | — |
Temp °C | 26 | 26 | 25 | 26 | 26 | 24 | 26 | 25 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 25 | 26 | 26 | 25 |
Feels °C | 26 | 26 | 25 | 26 | 25 | 23 | 25 | 24 | 24 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 26 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | W 14 | WSW 18 | WSW 18 | WSW 16 | SW 16 | SW 16 | SW 16 | WSW 15 | NNE 7 | WNW 16 | WNW 16 | NE 7 | NE 7 | NNE 8 | NNE 7 | NNE 7 | W 14 | N 8 | NNE 8 | WNW 14 | N 7 |
| kJ | 35 | 30 | 60 | 53 | 65 | 40 | 39 | 22 | 50 | 51 | 53 | 137 | 128 | 45 | 93 | 48 | 103 | 29 | 44 | 64 | 25 |
Swell 2 Height (m) Direction Period (s) | WSW 19 | W 14 | W 13 | W 13 | W 12 | W 12 | W 12 | W 16 | N 8 | SW 14 | W 14 | E 7 | W 15 | W 15 | W 15 | W 14 | WSW 17 | WNW 14 | WNW 14 | SW 16 | WNW 13 |
| kJ | 34 | 15 | 30 | 13 | 12 | 11 | 11 | 20 | 12 | 8 | 33 | 27 | 112 | 109 | 109 | 106 | 29 | 67 | 66 | 10 | 35 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | W 20 | NW 20 | W 14 | WSW 19 | SW 14 | WNW 15 | WSW 18 | WSW 18 | WSW 16 | WSW 16 | W 17 | WSW 17 | ESE 8 | SW 12 | SW 16 |
| kJ | — | — | — | — | — | — | 8 | 15 | 15 | 37 | 8 | 73 | 30 | 31 | 25 | 26 | 6 | 29 | 13 | 6 | 10 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | NE 8 | NE 8 | ENE 7 | ENE 7 | ENE 7 | E 6 | E 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 |
| kJ | 286 | 278 | 263 | 410 | 392 | 382 | 319 | 285 | 142 | 210 | 229 | 207 | 173 | 121 | 31 | 56 | 133 | 98 | 110 | 154 | 152 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 12 | 12 | 12 | 12 | 18 | 18 | 18 | 18 | 4 | 12 | 12 | 4 | 4 | 12 | 12 | 12 | 12 | 12 | 18 | 18 | 18 |
Best forecast wave conditions in Maui | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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Information about the Kahului Harbor Surf forecast
The above surf forecast table for Kahului Harbor provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Kahului Harbor can be found by selecting the local surf guide option on the grey menu. Our Kahului Harbor 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 (Kahului Harbor) 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 Kahului Harbor 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.
Kahului Harbor is 3 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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