
Surf Forecasts:
Kahului Harbor surf forecast from 8 Jul 2026:
- Most powerful swell: Sunday 12 Jul, 8PM (local time) - 6ft (1.9m), 8s period, ENE swell with 447 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 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 16s period and expected on Sunday (Jul 12) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Sun 12th Jul) | 6ft (1.9m) 8s |
Table - best surf conditions forecast for Kahului Harbor over the next 16 days.
Alright, let’s talk about what’s brewing for the next couple of weeks, just looking at the one spot we’ve got the scoop on. It’s a bit of a tough go for the lineup. We’re talking about Kahului Harbor (Maui). It’s a consistent spot, an advanced reef break, but the wind and swell direction just aren't playing ball.
The whole outlook is a grind, starting from Wednesday, July 8th, through the end of the run. The swell is hanging around 5 to 6 feet, coming from the ENE, which is almost the wrong way from the break’s optimum direction (NNE). That’s a key problem. The wind is a constant headache—a moderate breeze out of the ENE, mostly cross or cross-onshore, keeping the surface chopped up and messy. We’re getting moderate wave energy, in the 300 to 440 range, which isn’t bad, but it’s all being wasted by the dirty conditions. The water temp is about average for this time of year.
There’s no standout session in the first week. The energy is there, but the quality is consistently poor. The period is short, around 7 to 8 seconds, meaning weak, crumbly waves. This is a beach and reef setup, and with the strong cross-winds and poor surf quality, honestly, it looks more interesting for the kite surfers than paddle surfers during this whole stretch.
There’s a tiny flicker of hope on the morning of Wednesday, July 15th, where the swell drops to about 4 feet and the wind eases to a gentle breeze, but it’s only marginal and the energy is way down. Not worth paddling out for.
Further out, on Wednesday, July 22nd, we finally see a change. The swell drops to about 3 feet, but the period jumps to a very long 14 seconds. That’s groundswell energy, and the combined energy is a solid 427. This is the one to watch. The wind is still a gentle cross-shore, which will keep it a bit bumpy, but a long-period groundswell like that on a reef? It could get good. The swell is from the E, which is a bit better. The water will still be average temp. This is the only hint of a decent session in the whole window, but it’s more than a week away, so treat it as promising but uncertain. The crowds are listed as “sometimes” here, and for a long-period groundswell on a reef break, you might find a few others with the same idea, but it won’t be a circus.
Keep your expectations low for the next ten days or so. The first real glimmer is that Wednesday, July 22nd morning. Keep an eye on it.
Rusty
Short Range ForecastLight rain (total 3mm), mostly falling on Wed night. Warm (max 27°C on Fri afternoon, min 24°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Fri night. Warm (max 26°C on Sat morning, min 24°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tue 14 | |||||||||||||||
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 7 | ENE 8 | NE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | ENE 7 | ENE 7 |
Wave Graph | |||||||||||||||||||||
327 | 344 | 353 | 196 | 327 | 302 | 319 | 319 | 353 | 344 | 344 | 302 | 220 | 372 | 423 | 392 | 336 | 292 | 173 | 263 | 263 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross | cross-on |
High Tide | 10:41AM0.53m | 7:00PM0.48m | 11:52AM0.64m | 12:42PM0.75m | 9:34PM0.37m | 1:26PM0.84m | 11:19PM0.36m | 2:08PM0.90m | 00:31AM0.37m | 2:48PM0.93m | 1:30AM0.39m | 3:26PM0.94m | |||||||||
Low Tide | 2:40AM0.06m | 3:32PM0.46m | 3:32AM0.01m | 4:29AM-0.05m | 8:19PM0.37m | 5:24AM-0.11m | 8:39PM0.33m | 6:18AM-0.15m | 9:08PM0.29m | 7:08AM-0.18m | 9:39PM0.26m | 7:55AM-0.18m | |||||||||
— | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | |
7:10 | — | 7:10 | — | — | 7:10 | — | — | 7:10 | — | — | 7:09 | — | — | 7:09 | — | — | 7:09 | — | — | 7:09 | |
mm | — | — | — | 1 | — | — | 1 | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 27 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 24 | 26 | 26 |
Feels °C | 24 | 25 | 25 | 25 | 26 | 26 | 25 | 27 | 28 | 25 | 26 | 26 | 25 | 26 | 26 | 24 | 25 | 25 | 23 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 14 | SW 14 | NE 8 | W 15 | W 14 | W 13 | W 13 | W 14 | W 13 | W 14 | WSW 18 | NNE 7 | SW 16 | SW 16 | WSW 16 | SW 16 | SW 15 | NNE 7 | W 14 | WNW 16 |
8 | 8 | 8 | 196 | 4 | 4 | 4 | 14 | 16 | 14 | 35 | 61 | 73 | 69 | 65 | 49 | 39 | 35 | 88 | 35 | 85 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | SW 14 | SW 13 | SW 13 | SW 14 | W 21 | SW 21 | WSW 19 | WSW 19 | W 14 | WSW 18 | W 13 | W 12 | W 12 | W 12 | W 16 | W 14 | WNW 18 | SW 14 |
— | — | — | 7 | 7 | 7 | 8 | 9 | 17 | 37 | 34 | 15 | 60 | 13 | 12 | 11 | 12 | 20 | 16 | 32 | 8 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | W 16 | — | W 18 | W 16 | W 18 | S 12 | — | — | — | W 13 | — | — | W 12 | W 20 | W 21 | WSW 14 | WSW 14 | SW 19 |
— | — | — | 5 | — | 6 | 5 | 6 | 3 | — | — | — | 30 | — | — | 3 | 8 | 9 | 21 | 20 | 14 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 8 | E 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | ENE 7 | ENE 7 |
327 | 344 | 353 | 193 | 327 | 302 | 319 | 319 | 353 | 344 | 344 | 302 | 220 | 372 | 423 | 392 | 336 | 292 | 173 | 263 | 263 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 18 | 12 | 12 | 12 | 12 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 12 | 12 | 18 | 12 | 18 | 18 | 12 | 12 | 18 |
Best forecast wave conditions in Maui | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.











