
Surf Forecasts:
Kahului Harbor surf forecast from 12 Jul 2026:
- Most powerful swell: Sunday 12 Jul, 5PM (local time) - 6ft (1.9m), 8s period, ENE swell with 453 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 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 0.6m 4s 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 | 5PM (Sun 12th Jul) | 6ft (1.9m) 8s |
Table - best surf conditions forecast for Kahului Harbor over the next 16 days.
Alright folks, Rusty here. Let’s have a hard look at what’s coming down the pipe for Kahului Harbor. Straight up, I gotta be real with you – this is a tough stretch. The forecast is a long, drawn-out run of poor surf conditions with hardly a window to get excited about. We’re looking at a solid 16-day outlook with no real standout days, and a whole lot of "don't bother" in between.
The pattern is stubborn. We’ve got a persistent ENE wind blowing cross to cross-onshore for the entire period, which keeps the surface chopped up and ugly. The swell is hanging around in the 3ft to 6ft range for the first week, but it’s all short-period windswell running 7 to 8 seconds, so the wave quality is poor. The combined swell energy is moderate, bouncing between 120 and 453 (moderate wave energy), but that energy is all mess and no shape.
The water temp is about average for the time of year, so no surprises there.
We kick off on Sunday, 12 July, with a 6ft ENE swell at 8 seconds and a moderate cross-shore wind at 12 mph. It looks more interesting for kite surfing than paddle surfing. The wave comment calls it "poor surf conditions" with a score of 0 out of 10. That vibe carries straight through Thursday, 16 July, with the swell dropping to 3ft to 4ft and the wind staying messy.
There’s a little flicker of hope on Monday, 20 July. A 15-second period swell rolls in, but it’s small – only 2ft to 3ft – and the wind is cross-onshore. The combined energy reads 402 to 425 (moderate wave energy), and that long period would usually get my heart going, but with the size so tiny and the wind on it, it’s going to be straight and weak at this reef. Not worth paddling out for.
After that, we sink back into the same pattern: onshore wind, short-period junk, and poor conditions. The last glimmer is Wednesday, 22 July, when the morning session shows a cross-shore wind at 9 mph with a 4ft swell at 7 seconds. The wave comment upgrades to "marginal surf forecast or questionable tide conditions" with a 1 out of 10. That’s about as close to a recommendation as we get, and it’s still a long shot.
The rest of the run through to Monday, 27 July, is all 0 out of 10 scores with "poor surf conditions." No standouts, no hidden gems. This is a blank run for the area, and it’s one of those stretches where the forecast can change, but right now, there’s nothing here worth waxing up for.
Keep the board in the car and the eyes on the horizon. Rusty out.
Short Range ForecastLight rain (total 4mm), mostly falling on Tue morning. Warm (max 26°C on Sun morning, min 23°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Wed afternoon. Warm (max 26°C on Thu morning, min 24°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Sat 18 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | NE 8 | NE 8 | NE 7 | ENE 7 | ENE 7 | NE 7 | ENE 7 | E 6 | ENE 6 | ENE 6 | ENE 6 | E 7 | E 7 | E 8 |
Wave Graph | |||||||||||||||||||||
293 | 410 | 453 | 373 | 319 | 277 | 146 | 229 | 236 | 156 | 101 | 99 | 115 | 123 | 91 | 80 | 121 | 145 | 89 | 89 | 195 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 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 | 5:09AM0.44m | 5:32PM0.71m | |||||||
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 | 10:44AM0.13m | |||||||
— | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | |
7:09 | — | 7:09 | — | — | 7:09 | — | — | 7:09 | — | — | 7:09 | — | — | 7:09 | — | — | 7:08 | — | — | 7:08 | |
mm | — | — | — | — | — | — | — | 2 | 2 | — | — | 2 | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 26 | 26 | 24 | 26 | 26 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 25 | 26 | 26 |
Feels °C | 25 | 26 | 25 | 23 | 26 | 25 | 24 | 26 | 26 | 25 | 26 | 26 | 26 | 27 | 26 | 27 | 26 | 26 | 26 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | WSW 18 | WSW 16 | SW 16 | SW 16 | SW 16 | WSW 15 | NNE 7 | WNW 16 | WNW 16 | NE 7 | N 7 | NNE 7 | NE 7 | W 14 | NNE 7 | NNE 7 | N 8 | WNW 14 | NNE 7 | NNE 7 | NNE 7 |
60 | 53 | 65 | 40 | 39 | 22 | 70 | 51 | 53 | 156 | 36 | 57 | 115 | 104 | 29 | 30 | 29 | 64 | 42 | 42 | 29 | |
Swell 2 Height (m) Direction Period (s) | W 13 | W 13 | W 12 | W 12 | W 12 | W 16 | N 8 | SW 14 | W 14 | WNW 15 | W 15 | W 15 | W 15 | WSW 16 | W 14 | WNW 14 | WNW 14 | SW 16 | WNW 13 | WNW 13 | WNW 13 |
30 | 13 | 12 | 11 | 11 | 19 | 5 | 8 | 33 | 73 | 112 | 109 | 109 | 26 | 103 | 67 | 66 | 10 | 35 | 34 | 34 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | W 20 | NW 20 | W 14 | WSW 19 | SW 14 | WSW 17 | WSW 18 | WSW 18 | WSW 16 | W 16 | WSW 17 | ESE 8 | SW 16 | SW 12 | SW 10 | SW 10 | SW 9 |
— | — | — | — | 8 | 15 | 15 | 37 | 8 | 29 | 30 | 31 | 25 | 5 | 29 | 7 | 10 | 5 | 4 | 4 | 3 | |
Wind waves Height (m) Direction Period (s) | 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 | ENE 6 | ENE 6 | ENE 6 | E 7 | E 7 | E 8 |
293 | 410 | 453 | 373 | 319 | 277 | 146 | 229 | 236 | — | 101 | 99 | — | 123 | 91 | 80 | 121 | 145 | 89 | 89 | 195 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 12 | 12 | 19 | 18 | 12 | 18 | 18 | 12 | 12 | 4 | 4 | 4 | 4 | 20 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
Best forecast wave conditions in Maui | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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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.











