
Surf Forecasts:
Kahului Harbor surf forecast from 2 Aug 2026:
- Most powerful swell: Saturday 1 Aug, 11PM (local time) - 7ft (2.1m), 8s period, ENE swell with 636 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 2.1m 8s and forecast to arrive on Saturday (Aug 01) 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 0.2m 11s period and expected on Tuesday (Aug 04) at 5AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Sat 1st Aug) | 7ft (2.1m) 8s |
Table - best surf conditions forecast for Kahului Harbor over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let’s be straight with you: the next couple of weeks are looking pretty ordinary for Kahului Harbor. We’ve got a solid run of pulse in the water, but the wind and conditions are just not playing nice. It’s not going to be a total flat spell, but you’re going to have to pick your moments and lower your expectations. There’s a lot of cross-shore and cross-onshore breeze messing up what could be decent waves.
Right out of the gate, Saturday the 1st, we have some swell, coming in at 7ft 2in from the ENE, with a short, 8-second period. The energy is moderate at 861, but the wind is a moderate cross-shore breeze that’s going to put a chop on it. This is a reef break, so it’s got a bit of structure to it, but the conditions are marginal, and the tide could be a problem. Not the day to get too excited.
Sunday the 2nd is more of the same, with 6ft 6in of short-period ENE swell. The morning has a moderate cross-shore breeze, but it's still a bit lumpy. By the afternoon, the wind swings more cross-onshore and it gets choppy. The conditions are poor; it’s just not shaping up to be much fun.
We roll into Monday the 3rd, and we’ve got a drop in size to 4ft 11in. The wind lightens up a bit in the morning, but it’s still cross-onshore, so the face is going to be lumpy. The whole day is rated as poor. There’s just not a lot to work with here.
Tuesday the 4th, we see the period stretch out to a more comfortable 11 seconds, with waves around 4ft 7in to 4ft 11in. The morning looks best with a light cross-shore breeze, but it's still not clean. It’s rated as marginal, meaning the tide and conditions are just questionable. The afternoon goes downhill again with a gentle cross-onshore breeze.
From the 5th through the rest of the first week, we’re looking at a slow fade in energy. We’ve got waves, but the period drops back down, and the wind stays in an annoying cross/cross-on pattern. There are a few days where the swell could be fun, but the conditions just won’t allow it. There’s a chance of a thunderstorm on Wednesday the 5th and again on Sunday the 9th, which could mess with the wind even more.
The second week, from around the 11th onward, sees the swell drop off even more, with wave heights mostly in the 4ft 3in to 4ft 11in range and short periods. The energy is weak, dipping into the low 200s. The wind remains a constant problem, mostly a moderate cross-shore breeze that keeps things bumpy. By the 16th, we see a slight bump in size to 5ft 7in, but the period is only 8 seconds and the wind is still cross-shore.
So, to be honest, there is no standout day in this whole 16-day window. The water temp at the start is a normal 80.1°F, which is about average for this time of year, so no surprises there. It’s just a classic case of persistent trade winds and short-period wind swell ruining what could be a fun week of waves. You might find a few semi-rideable morning sessions, but I wouldn't be booking any time off work for it.
Short Range ForecastSome drizzle, heaviest during Sun night. Warm (max 27°C on Sun morning, min 24°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Fri morning, min 25°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | ||||||||||||||
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 8 | ENE 8 | ENE 8 | ENE 8 | ENE 11 | ENE 11 | ENE 11 | ENE 10 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | NE 8 | E 6 | ENE 7 | ENE 7 |
Wave Graph | |||||||||||||||||||
588 | 588 | 477 | 370 | 261 | 284 | 560 | 436 | 404 | 281 | 207 | 244 | 212 | 140 | 105 | 28 | 98 | 175 | 180 | |
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 | cross-on | cross-on | cross-on | cross | cross-on | cross | cross | cross | cross-on | cross | cross-on | cross |
High Tide | 4:25AM0.49m | 4:43PM0.71m | 5:20AM0.50m | 4:58PM0.65m | 6:31AM0.50m | 5:07PM0.58m | 8:17AM0.53m | 4:59PM0.52m | 10:35AM0.60m | 11:51AM0.70m | |||||||||
Low Tide | 11:00PM0.16m | 10:03AM0.14m | 11:27PM0.13m | 10:39AM0.24m | 11:58PM0.11m | 11:22AM0.35m | 00:37AM0.08m | 12:37PM0.46m | 1:32AM0.06m | 2:47AM0.04m | 4:09AM0.00m | ||||||||
— | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | |
7:04 | — | 7:02 | — | — | 7:02 | — | — | 7:01 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | |
mm | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 27 | 27 | 25 | 27 | 26 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 26 |
Feels °C | 24 | 26 | 26 | 24 | 28 | 27 | 26 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 26 | 27 |
Swell 1 Height (m) Direction Period (s) | E 14 | E 14 | E 13 | E 13 | E 13 | E 12 | ENE 11 | ENE 11 | W 13 | ENE 10 | ENE 9 | NNE 8 | ENE 8 | NNW 8 | NNW 8 | NE 8 | NNW 7 | NNW 7 | NE 11 |
183 | 142 | 130 | 125 | 119 | 104 | 560 | 436 | 13 | 281 | 207 | 7 | 134 | 7 | 6 | 28 | 10 | 5 | 40 | |
Swell 2 Height (m) Direction Period (s) | N 10 | N 9 | N 9 | N 8 | N 8 | N 7 | N 7 | W 11 | N 10 | N 9 | NNE 9 | W 12 | NNE 8 | N 8 | N 8 | NNW 7 | SW 14 | SW 20 | NNW 7 |
18 | 15 | 14 | 12 | 11 | 17 | 4 | 2 | 2 | 7 | 8 | 11 | 6 | 5 | 4 | 5 | 8 | 15 | 5 | |
Swell 3 Height (m) Direction Period (s) | SW 14 | SW 14 | W 12 | W 12 | W 11 | W 12 | W 12 | SW 17 | SW 17 | W 12 | W 12 | SW 16 | W 12 | W 11 | W 12 | ENE 10 | W 21 | SW 14 | WSW 19 |
8 | 8 | 3 | 3 | 2 | 3 | 11 | 11 | 11 | 12 | 11 | 10 | 11 | 10 | 11 | 11 | 9 | 8 | 37 | |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | — | — | ENE 11 | — | — | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 4 | E 6 | ENE 7 | ENE 7 |
588 | 588 | 477 | 370 | 261 | 284 | — | — | 404 | — | — | 244 | 212 | 140 | 105 | 27 | 98 | 175 | 180 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 12 | 18 | 18 | 18 | 12 | 4 | 18 | 4 | 4 | 12 | 4 | 4 | 4 | 4 | 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.











