Surf Forecasts:
Kahului Harbor surf forecast from 23 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 2AM (local time) - 8ft (2.5m), 11s period, ENE swell with glassy winds.
- Most powerful swell: Wednesday 29 Jul, 2AM (local time) - 8ft (2.5m), 11s period, ENE swell with 1,514 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 2AM (local time) - 8ft (2.5m), 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 Wednesday (Jul 29) at 2AM. The primary swell is predicted to be 2.5m and 11s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Kahului Harbor in the next 16 days are 2.5m 11s and forecast to arrive on Wednesday (Jul 29) at 2AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 19s period and expected on Thursday (Jul 23) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Wed 29th Jul) | 8ft (2.5m) 11s |
| Best Surf | 2AM (Wed 29th Jul) | 8ft (2.5m) 11s |
| Most Powerful | 2AM (Wed 29th Jul) | 8ft (2.5m) 11s |
Table - best surf conditions forecast for Kahului Harbor over the next 16 days.
The Lowdown
Rusty here again, let's break this down in feet and miles per hour.
Same story, different numbers. Kahului Harbor is lookin' mostly rough for the foreseeable future. Plenty of swell but the damn wind is just wreckin' it.
From July 23rd to the 24th, you got waves around 5 to 6 ft, but that ENE wind is 12 to 15 mph and it's all cross-shore and choppy. Not clean. Energy is moderate.
Saturday the 25th and Sunday the 26th: on Sunday that swell turns into a nice long period groundswell, 14 seconds, energy jumps (good readings there), but the wind is onshore from the ENE at 12 mph. Surf size drops to around 3 ft. Clean it is not.
Monday the 27th, a bit more size, up to 6 ft in the afternoon with very strong wave energy, but there it is again, cross-onshore wind. Choppy.
Now, Wednesday the 29th of July is the one. Wind goes light cross-offshore from the SE, just 9 mph. Clean conditions. Morning starts with a 8 ft swell from the ENE, period 10 seconds, high energy. In the afternoon, it's 7 ft from the east, period 9s, but the energy is very strong. This is for the experienced surfer—this wave is heavy. Kahului Harbor (Maui) under light offshore winds is a different beast. That's your window.
From July 30th all the way to August 7th, it's back to the usual: chest to head-high surf, 5 to 6 ft mostly, but those trade winds are a constant 9 to 15 mph from the east-northeast. Wave energy stays moderate to occasionally high (like on August 2nd or 5th). There's a day on August 5th with a 7 ft swell and 11-second period, energy high, wind light at 6 mph — could clean up enough for a session, but it's a gamble. Most of it is sloppy or just marginal.
Honestly, the whole 16 days is a pretty flat run except for that Wednesday the 29th. If you're gonna go, that's the one. The rest? Kite surfers might have some fun.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sat night. Warm (max 27°C on Thu afternoon, min 23°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 10mm), heaviest on Sun morning. Warm (max 27°C on Tue afternoon, min 24°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | |||||||||||||||
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 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | E 7 | ENE 8 | NE 8 | NE 8 | NE 8 | E 14 | E 14 | E 13 | ENE 13 | ENE 12 | ENE 12 | E 12 | ENE 11 | ENE 10 | E 9 | ENE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 226 | 207 | 161 | 244 | 301 | 171 | 330 | 362 | 344 | 329 | 492 | 452 | 507 | 1255 | 1134 | 1163 | 841 | 1514 | 961 | 678 | 344 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-on | cross | cross | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | cross-off | cross-off | cross |
High Tide | 12:27PM0.64m | 1:01PM0.69m | 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 | |||||||||
Low Tide | 4:25AM0.06m | 5:21AM0.03m | 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 | ||||||||||
 |  |  | | | | | |  |  | |  | | | | |  |  | | | | |
 | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — |
 | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:06 | — | — | 7:05 | — |
mm | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | 1 | 2 | 2 | 4 | — | 2 | 1 |
Temp °C | 26 | 27 | 25 | 26 | 27 | 25 | 26 | 27 | 25 | 26 | 25 | 24 | 26 | 26 | 25 | 26 | 27 | 26 | 28 | 28 | 26 |
Feels °C | 25 | 26 | 24 | 24 | 26 | 24 | 26 | 26 | 25 | 25 | 24 | 24 | 26 | 25 | 25 | 28 | 28 | 32 | 30 | 30 | 28 |
Swell 1 Height (m) Direction Period (s) | WSW 20 | NNW 10 | ENE 10 | WSW 18 | E 16 | NNE 8 | E 13 | E 13 | E 15 | E 14 | E 14 | E 14 | E 13 | SW 15 | SW 14 | SW 14 | E 12 | ENE 11 | ENE 10 | ENE 9 | SW 19 |
| kJ | 38 | 9 | 34 | 31 | 44 | 120 | 56 | 54 | 106 | 329 | 492 | 452 | 507 | 8 | 8 | 7 | 841 | 1514 | 961 | 534 | 15 |
Swell 2 Height (m) Direction Period (s) | NNW 10 | WSW 20 | SW 18 | NNW 9 | SW 17 | E 14 | ENE 9 | E 16 | E 12 | SW 17 | SSW 16 | SW 16 | SW 16 | — | — | — | NNE 8 | SW 15 | SW 14 | SW 14 | S 13 |
| kJ | 10 | 37 | 50 | 8 | 47 | 65 | 8 | 20 | 46 | 45 | 25 | 10 | 9 | — | — | — | 178 | 8 | 8 | 8 | 3 |
Swell 3 Height (m) Direction Period (s) | SW 16 | SW 16 | NNW 9 | E 16 | NNW 8 | WSW 16 | SW 19 | SW 18 | SW 18 | — | — | — | — | — | — | — | — | — | — | W 20 | N 11 |
| kJ | 10 | 10 | 8 | 21 | 7 | 26 | 15 | 51 | 49 | — | — | — | — | — | — | — | — | — | — | 7 | 2 |
Wind waves Height (m) Direction Period (s) | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | E 7 | ENE 8 | NE 8 | NE 8 | NE 8 | NE 8 | ENE 7 | NE 7 | ENE 13 | ENE 12 | ENE 12 | — | — | — | E 9 | ENE 8 |
| kJ | 226 | 207 | 161 | 244 | 301 | 171 | 330 | 362 | 344 | 326 | 276 | 297 | 242 | 1255 | 1134 | 1163 | — | — | — | 678 | 344 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 12 | 188 | 12 | 12 | 19 | 12 | 12 | 18 | 12 | 18 | 18 | 18 | 18 | 18 | 12 | 11 | 20 | 0 | 4 | 0 | 12 |
Best forecast wave conditions in Maui | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Kahului Harbor surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest