Surf Forecasts:
Kahului Harbor surf forecast from 27 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 2AM (local time) - 6.5ft (2.0m), 10s period, ENE swell with cross-offshore winds.
- Most powerful swell: Tuesday 28 Jul, 11AM (local time) - 7.5ft (2.3m), 13s period, E swell with 1,751 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 2AM (local time) - 6.5ft (2.0m), 10s 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 Wednesday (Jul 29) at 2AM. The primary swell is predicted to be 2.0m and 10s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Kahului Harbor in the next 16 days are 2.3m 13s and forecast to arrive on Tuesday (Jul 28) at 11AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 18s period and expected on Thursday (Jul 30) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Wed 29th Jul) | 6.5ft (2.0m) 10s |
| Best Surf | 2AM (Wed 29th Jul) | 6.5ft (2.0m) 10s |
| Most Powerful | 11AM (Tue 28th Jul) | 7.5ft (2.3m) 13s |
Table - best surf conditions forecast for Kahului Harbor over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s cookin’ for our local zone over the next couple of weeks.
Right off the bat, I gotta be straight with you – the surf situation is a bit of a struggle. We’re looking at a long stretch of days where it’s just not gonna be worth paddling out. Most of the time the wind is either cross or cross-onshore, making things choppy and messy. The swell energy is hit or miss, and the conditions are just not cooperating.
The first real chance to get wet without hating life looks like Wednesday, July 29th. That morning we’ve got a clean 5 ft swell from the ENE, with a light cross-offshore wind from the SE. The water is a pleasant 80°, which is pretty normal for this time of year. The swell period is a short 9 seconds, so it’ll be a bit crumbly, but it’s the best we’ve got. The afternoon picks up a little at 6 ft from the same ENE direction, and while the wind is a bit stronger, it stays cross-offshore. The combined energy is moderate (395 in the morning, 781 in the afternoon), so there’s some push. This is our standout window.
After that, things go downhill again. From Thursday the 30th right through the end of the first week of August, the wind is mostly onshore or cross-shore, and the swell is junky with short periods of 7-8 seconds. The energy is weak, often in the low hundreds. There’s a tiny flicker on August 11th – a Tuesday morning with a glassy 4 ft swell from the NE. The wind is almost dead calm, and the period is a short 6 seconds, so it’ll be small and weak, but at least it’s clean. The afternoon is glassy too, but still tiny at 4 ft. That’s about as good as it gets in the second week.
So, to sum it up: Wednesday, July 29th is your best bet. Hit Kahului Harbor in the morning for the cleanest conditions. The rest of the forecast is a real bummer, with a lot of chop and no real juice. This is a tough stretch, but it won’t last forever. Keep an eye on the charts.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Wed night. Warm (max 27°C on Mon afternoon, min 25°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Sat night. Warm (max 27°C on Thu morning, min 24°C on Fri night). Mainly fresh winds. | ||||||||||||||||||||
Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | |||||||||||||||
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) | E 14 | E 14 | E 13 | E 13 | ENE 12 | ENE 10 | ENE 9 | ENE 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 711 | 1130 | 1247 | 1751 | 1372 | 788 | 395 | 437 | 279 | 265 | 300 | 324 | 407 | 418 | 437 | 547 | 589 | 581 | 516 | 457 | 344 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | on | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross |
High Tide | 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 | 4:25PM0.76m | 4:25AM0.49m | 4:43PM0.71m | ||||||||
Low Tide | 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 | 9:31AM0.05m | 11:00PM0.16m | 10:03AM0.14m | 11:27PM0.13m | ||||||||
 |  |  |  |  |  | | | | | |  | | | | | |  | | | | |
 | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — |
 | — | 7:06 | — | — | 7:06 | — | — | 7:05 | — | — | 7:05 | — | — | 7:04 | — | — | 7:04 | — | — | 7:02 | — |
mm | — | 1 | 4 | 1 | — | — | — | 1 | 2 | — | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 26 | 27 | 25 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 25 | 26 | 26 | 25 |
Feels °C | 27 | 28 | 26 | 29 | 29 | 29 | 30 | 29 | 28 | 28 | 27 | 27 | 27 | 26 | 25 | 25 | 24 | 23 | 25 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | E 14 | E 14 | E 13 | E 13 | ENE 12 | ENE 10 | ENE 9 | ENE 8 | SW 19 | WSW 18 | E 17 | E 16 | E 15 | E 15 | E 14 | E 14 | E 14 | E 14 | E 14 | E 14 | E 13 |
| kJ | 711 | 1130 | 1247 | 1751 | 1372 | 788 | 395 | 344 | 15 | 31 | 53 | 178 | 153 | 205 | 202 | 199 | 196 | 261 | 200 | 146 | 128 |
Swell 2 Height (m) Direction Period (s) | SW 16 | SW 15 | NNE 8 | NNE 9 | NNE 8 | SW 15 | SW 14 | S 13 | S 13 | E 19 | WSW 18 | N 9 | N 9 | N 8 | N 8 | N 8 | SW 14 | N 10 | N 9 | N 9 | N 8 |
| kJ | 9 | 8 | 165 | 194 | 151 | 9 | 8 | 3 | 3 | 28 | 30 | 15 | 14 | 12 | 11 | 5 | 8 | 8 | 15 | 14 | 12 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | W 21 | W 20 | N 11 | N 10 | N 10 | WSW 17 | WSW 16 | WSW 16 | WSW 15 | SW 15 | N 8 | SW 14 | SW 14 | SW 14 | SW 13 |
| kJ | — | — | — | — | — | — | 8 | 7 | 2 | 7 | 7 | 27 | 25 | 25 | 22 | 8 | 1 | 8 | 8 | 8 | 7 |
Wind waves Height (m) Direction Period (s) | NE 8 | NE 7 | — | — | NNE 7 | — | — | ENE 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 244 | 171 | — | — | 105 | — | — | 437 | 279 | 265 | 300 | 324 | 407 | 418 | 437 | 547 | 589 | 581 | 516 | 457 | 344 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 18 | 18 | 18 | 18 | 12 | 0 | 0 | 0 | 4 | 12 | 20 | 12 | 12 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 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.
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