Surf Forecasts:
Kahului Harbor surf forecast from 25 Jul 2026:
- Best quality surf: Tuesday 28 Jul, 11PM (local time) - 10ft (3.0m), 11s period, ENE swell with onshore winds.
- Most powerful swell: Tuesday 28 Jul, 5PM (local time) - 8ft (2.5m), 13s period, E swell with 2,287 kJ wave energy.
- Next surfable swell (1★+): Tuesday 28 Jul, 11PM (local time) - 10ft (3.0m), 11s period with ENE swell.
Best Forecast Surf Conditions for Kahului Harbor this week:
The surf forecast for Kahului Harbor over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Jul 28) at 11PM. The primary swell is predicted to be 3.0m and 11s period. The wind is predicted to be onshore as the swell arrives.
The most powerful waves expected at Kahului Harbor in the next 16 days are 2.5m 13s and forecast to arrive on Tuesday (Jul 28) at 5PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 18s period and expected on Sunday (Jul 26) at 5AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Tue 28th Jul) | 10ft (3.0m) 11s |
| Best Surf | 11PM (Tue 28th Jul) | 10ft (3.0m) 11s |
| Most Powerful | 5PM (Tue 28th Jul) | 8ft (2.5m) 13s |
Table - best surf conditions forecast for Kahului Harbor over the next 16 days.
The Lowdown
Hey folks, Rusty here. Let’s talk about what’s coming up for Kahului Harbor. It’s a reef break, exposed, and it likes swell from the NNE. Right now, the water’s sitting at 80°, which is about average for this time of year – nothing weird going on there.
Honestly, the next several days are a bit of a write-off. The wind is rubbish – mostly cross-on or cross, and the surf is just messy. Saturday morning, July 25th, you’ve got a 6ft NE swell, but it’s short-period at 8 seconds and the wind is cross-on, so it’s choppy and not worth paddling out for. That theme sticks around through Sunday, Monday, and Tuesday. The energy builds a bit – Tuesday morning, July 28th, we see a 7ft swell from the E, period 13 seconds, and the combined energy hits 1596 (moderate to strong energy), but it’s still cross-on, and the surf is just marginal. Not your day.
Then, Wednesday, July 29th, things flip. A 7ft NE swell rolls in with a 10-second period, but the wind switches to a light cross-off from the SE – that’s clean. The combined energy is 766 (moderate), and the surf is expected to be very good. That morning session is the standout of the whole 16-day window. The afternoon drops a bit to 6ft from the ENE, still clean, but the morning is the real gem. The swell direction is NNE-compatible, and the wind is sweet. This is the one to circle.
After that, it’s back to the same old story. From Thursday, July 30th, through to Saturday, August 9th, the wind stays cross or cross-on, and the swell is either short-period or too small. There’s a brief moment on Monday, August 3rd, with a 3ft E swell, 14-second period, but it’s cross-on and choppy – not worth the effort. The energy drops right off by the second week, with numbers in the low hundreds.
So, the best on offer is the Wednesday morning, July 29th, at Kahului Harbor. It’s a clean, moderate swell with good wind. The rest of the window is a dud – long gaps of nothing surfable, especially from July 30th onward. If you’re a beginner, that 7ft is a bit much, but for an advanced surfer, it’s ideal. Keep an eye on the forecast, but for now, that Wednesday is your only real shot.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Sat morning. Warm (max 27°C on Sat afternoon, min 24°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Tue morning. Warm (max 28°C on Wed afternoon, min 25°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||
Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | |||||||||||||||
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) | NE 8 | ENE 8 | ENE 8 | NE 8 | E 15 | E 14 | E 13 | E 13 | E 13 | E 13 | E 13 | ENE 11 | NE 10 | ENE 9 | ENE 8 | E 8 | ENE 8 | E 8 | ENE 8 | ENE 8 | ENE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 378 | 425 | 403 | 339 | 610 | 687 | 595 | 760 | 1077 | 1446 | 2287 | 1658 | 766 | 486 | 438 | 265 | 308 | 292 | 385 | 450 | 497 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross |
High Tide | 1:30PM0.73m | 11:19PM0.34m | 1:58PM0.77m | 00:18AM0.37m | 2:25PM0.80m | 1:02AM0.40m | 2:52PM0.82m | 1:41AM0.43m | 3:17PM0.83m | 2:19AM0.45m | 3:42PM0.83m | 2:58AM0.47m | 4:04PM0.80m | 3:39AM0.48m | |||||||
Low Tide | 8:39PM0.32m | 6:07AM-0.01m | 8:45PM0.30m | 6:47AM-0.04m | 9:01PM0.27m | 7:24AM-0.07m | 9:22PM0.25m | 7:57AM-0.07m | 9:46PM0.23m | 8:28AM-0.05m | 10:10PM0.21m | 8:59AM-0.02m | 10:34PM0.19m | ||||||||
 |  |  |  | | | | | |  | |  | | |  | | | | | | | |
 | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — |
 | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:06 | — | — | 7:05 | — | — | 7:05 | — | — | 7:04 | — |
mm | 2 | — | 1 | — | — | 1 | — | — | 4 | 2 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 27 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 27 | 25 | 27 | 28 | 27 | 27 | 27 | 26 | 27 | 28 | 26 |
Feels °C | 26 | 27 | 24 | 25 | 26 | 25 | 26 | 25 | 25 | 28 | 28 | 26 | 29 | 30 | 29 | 27 | 26 | 26 | 27 | 28 | 26 |
Swell 1 Height (m) Direction Period (s) | E 13 | E 13 | E 15 | E 15 | E 15 | E 14 | E 13 | E 13 | E 13 | E 13 | E 13 | ENE 11 | NE 10 | ENE 9 | W 19 | WSW 18 | WSW 18 | E 15 | E 15 | E 14 | E 14 |
| kJ | 56 | 54 | 106 | 339 | 610 | 687 | 595 | 760 | 1077 | 1446 | 2287 | 1658 | 766 | 486 | 7 | 31 | 30 | 71 | 157 | 146 | 202 |
Swell 2 Height (m) Direction Period (s) | SW 19 | E 16 | E 12 | SW 17 | SSW 16 | SW 16 | SW 16 | SW 15 | SW 14 | — | NNE 9 | — | SW 14 | S 13 | SW 13 | N 10 | N 9 | N 9 | N 9 | N 8 | N 8 |
| kJ | 15 | 20 | 46 | 45 | 25 | 10 | 9 | 9 | 8 | — | 232 | — | 8 | 3 | 7 | 7 | 7 | 14 | 14 | 12 | 12 |
Swell 3 Height (m) Direction Period (s) | SW 16 | SW 18 | SW 18 | — | — | — | — | — | — | — | — | — | W 21 | W 20 | — | E 17 | E 16 | WSW 17 | WSW 16 | WSW 16 | WSW 15 |
| kJ | 10 | 51 | 49 | — | — | — | — | — | — | — | — | — | 8 | 7 | — | 6 | 21 | 27 | 25 | 25 | 22 |
Wind waves Height (m) Direction Period (s) | NE 8 | ENE 8 | ENE 8 | NE 8 | ENE 7 | NE 7 | NE 8 | NE 7 | NNE 7 | NNE 8 | — | — | — | — | ENE 8 | E 8 | ENE 8 | E 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 378 | 425 | 403 | 335 | 329 | 242 | 244 | 212 | 160 | 150 | — | — | — | — | 438 | 265 | 308 | 292 | 385 | 450 | 497 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 18 | 19 | 18 | 18 | 18 | 12 | 19 | 20 | 18 | 18 | 18 | 12 | 0 | 0 | 12 | 20 | 12 | 12 | 12 | 12 | 18 |
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.
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