Kahului Harbor Surf Break

Lat Long: 20.90° N 156.48° W

Kahului Harbor Surf Forecast and Surf Report

Issued: 7 pm 11 Jul 2026 (local time)

Forecast update in  hr  min

Today's Kahului Harbor sea temperature is
26.1° C
0.2° 

Kahului Harbor surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Kahului Harbor surf forecast from 12 Jul 2026:

  • Most powerful swell: Sunday 12 Jul, 5PM (local time) - 6ft (1.9m), 8s period, ENE swell with 453 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 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Wednesday (Jul 15) at 8AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 5PM (Sun 12th Jul)6ft (1.9m) 8s

Table - best surf conditions forecast for Kahului Harbor over the next 16 days.


Alright folks, Rusty here. Let’s have a hard look at what’s coming down the pipe for Kahului Harbor. Straight up, I gotta be real with you – this is a tough stretch. The forecast is a long, drawn-out run of poor surf conditions with hardly a window to get excited about. We’re looking at a solid 16-day outlook with no real standout days, and a whole lot of "don't bother" in between.

The pattern is stubborn. We’ve got a persistent ENE wind blowing cross to cross-onshore for the entire period, which keeps the surface chopped up and ugly. The swell is hanging around in the 3ft to 6ft range for the first week, but it’s all short-period windswell running 7 to 8 seconds, so the wave quality is poor. The combined swell energy is moderate, bouncing between 120 and 453 (moderate wave energy), but that energy is all mess and no shape.

The water temp is about average for the time of year, so no surprises there.

We kick off on Sunday, 12 July, with a 6ft ENE swell at 8 seconds and a moderate cross-shore wind at 12 mph. It looks more interesting for kite surfing than paddle surfing. The wave comment calls it "poor surf conditions" with a score of 0 out of 10. That vibe carries straight through Thursday, 16 July, with the swell dropping to 3ft to 4ft and the wind staying messy.

There’s a little flicker of hope on Monday, 20 July. A 15-second period swell rolls in, but it’s small – only 2ft to 3ft – and the wind is cross-onshore. The combined energy reads 402 to 425 (moderate wave energy), and that long period would usually get my heart going, but with the size so tiny and the wind on it, it’s going to be straight and weak at this reef. Not worth paddling out for.

After that, we sink back into the same pattern: onshore wind, short-period junk, and poor conditions. The last glimmer is Wednesday, 22 July, when the morning session shows a cross-shore wind at 9 mph with a 4ft swell at 7 seconds. The wave comment upgrades to "marginal surf forecast or questionable tide conditions" with a 1 out of 10. That’s about as close to a recommendation as we get, and it’s still a long shot.

The rest of the run through to Monday, 27 July, is all 0 out of 10 scores with "poor surf conditions." No standouts, no hidden gems. This is a blank run for the area, and it’s one of those stretches where the forecast can change, but right now, there’s nothing here worth waxing up for.

Keep the board in the car and the eyes on the horizon. Rusty out.

Short Range Forecast

Light rain (total 4mm), mostly falling on Tue morning. Warm (max 26°C on Sun morning, min 23°C on Sun night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 2mm), mostly falling on Wed afternoon. Warm (max 26°C on Thu morning, min 24°C on Tue night). Wind will be generally light.

Sunday
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Sat
18
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.7
ENE
7
1.9
ENE
8
1.9
ENE
8
1.7
ENE
8
1.7
ENE
8
1.6
ENE
8
1.1
E
8
1.4
NE
8
1.4
NE
8
1.2
NE
7
1
ENE
7
1
ENE
7
1.1
NE
7
1.2
ENE
7
1.1
E
6
1
ENE
6
1.3
ENE
6
1.3
ENE
6
1
E
7
1
E
7
1.2
E
8
Wave Graph
Metric surfscale
Energy kJ
293
410
453
373
319
277
146
229
236
156
101
99
115
123
91
80
121
145
89
89
195
Wind (km/h)
20
ENE
20
ENE
25
ENE
25
ENE
15
ENE
20
NE
15
NE
15
ENE
15
ENE
15
ENE
10
ENE
15
NE
15
ENE
15
ENE
20
ENE
20
E
20
ENE
20
ENE
20
ENE
20
ENE
15
ENE
Wind State
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
11:19PM0.36m
2:08PM0.90m
00:31AM0.37m
2:48PM0.93m
1:30AM0.39m
3:26PM0.94m
2:24AM0.41m
4:02PM0.91m
3:17AM0.43m
4:36PM0.86m
4:10AM0.44m
5:06PM0.79m
5:09AM0.44m
5:32PM0.71m
Low Tide
8:39PM0.33m
6:18AM-0.15m
9:08PM0.29m
7:08AM-0.18m
9:39PM0.26m
7:55AM-0.18m
10:12PM0.24m
8:40AM-0.15m
10:46PM0.22m
9:23AM-0.08m
11:19PM0.20m
10:04AM0.02m
11:52PM0.18m
10:44AM0.13m
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
rain showers
rain showers
clear
clear
rain showers
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:52
5:52
5:52
5:52
5:52
5:54
5:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:09
7:09
7:09
7:09
7:09
7:09
7:08
7:08
 mm
2
2
2
Temp °C
25
26
26
24
26
26
24
25
25
25
25
25
25
26
26
26
26
26
25
26
26
Feels °C
25
26
25
23
26
25
24
26
26
25
26
26
26
27
26
27
26
26
26
27
27
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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