Kahului Harbor Surf Break

Lat Long: 20.90° N 156.48° W

Kahului Harbor Surf Forecast and Surf Report

Issued: 1 am 06 Sep 2026 (local time)

Forecast update in  hr  min

Today's Kahului Harbor sea temperature is
26.7°C
0.1° 

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 6 Sep 2026:

  • Best quality surf: Monday 7 Sep, 11PM (local time) - 6ft (1.9m), 11s period, ENE swell with cross-offshore winds.
  • Most powerful swell: Monday 7 Sep, 2AM (local time) - 7.5ft (2.3m), 12s period, E swell with 1,539 kJ wave energy.
  • Next surfable swell (1★+): Monday 7 Sep, 11PM (local time) - 6ft (1.9m), 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 Monday (Sep 07) at 11PM. The primary swell is predicted to be 1.9m and 11s 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 12s and forecast to arrive on Monday (Sep 07) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 14s period and expected on Tuesday (Sep 08) at 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Mon 7th Sep)6ft (1.9m) 11s
Best Surf11PM (Mon 7th Sep)6ft (1.9m) 11s
Most Powerful 2AM (Mon 7th Sep)7.5ft (2.3m) 12s

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 coming our way.

Overall, we’re looking at a pretty patchy run for the next couple of weeks. The surf starts off on Sunday morning but it’s not until Tuesday that we see anything worth getting properly excited about. After that, there’s a real drop-off, with days and days of poor conditions rolling in from Wednesday the 9th right through until the end of the period. A long stretch of nothing much, so pick your moments carefully.

First up, Sunday the 6th is a bit of a write-off. The swell is there, around 7 ft from the ENE with a 12-second period, but it’s cross-on and choppy. Combined wave energy is sitting at 1245, so there’s plenty of juice, but the wind is just messing it up. Monday isn’t much better – still messy.

Tuesday the 8th is where it’s at. This is the standout. Tuesday morning we get a clean 6 ft swell from the ENE, period 11 seconds, and the wind swings to a gentle offshore from the south. That’s going to make things clean and lined up at Kahului Harbor. Combined energy is 799 – moderate but solid enough. Tuesday afternoon gets even better: the wind goes light cross-off from the southeast at just 3 mph, swell drops a touch to 5 ft but it’s still clean. This is the window.

After that, from Wednesday the 9th onward, it’s a long, grim run. The swell drops, the period gets shorter, and the wind stays cross or cross-on pretty much non-stop. There’s a brief moment on Thursday the 17th morning where it’s cross-shore and the swell is around 6 ft with an 8-second period, but it’s marginal at best. Honestly, not worth paddling out for.

Water temp is sitting at 80°F, which is pretty normal for this time of year – no anomaly to speak of. The break itself is a consistent, exposed reef setup that loves a NNE swell, and we’re getting ENE most of the time, so it’s a bit off the optimum. But that Tuesday window, with offshore winds? That’s the one.

So, to wrap it up: Tuesday the 8th is your day. Morning and afternoon both look good. After that, you’re waiting for the next pulse. Stay tuned, forecasts can change.

Rusty.

Short Range Forecast

Light rain (total 7mm), mostly falling on Sun night. Warm (max 29°C on Tue morning, min 25°C on Sun night). Wind will be generally light.

Days 4-6 Weather Summary

Some drizzle, heaviest during Fri night. Warm (max 27°C on Wed morning, min 24°C on Thu night). Wind will be generally light.

Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
2
2
1
3
3
3
3
2
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
Wave
Height (m)
Direction
Period (s)
2.1
ENE
12
2.2
ENE
12
2.3
E
12
1.6
E
12
2
ENE
12
1.8
ENE
11
1.7
ENE
11
1.5
ENE
10
1.2
NE
9
1.2
ENE
8
1.3
ENE
8
1.2
ENE
7
1.4
ENE
7
1.3
ENE
7
0.7
ENE
12
1.5
ENE
8
1.5
ENE
11
1.2
ENE
11
1.4
NE
10
1.4
NE
10
1
ENE
10
Wave Graph
Metric surfscale
Energy kJ
1240
1316
1539
761
1084
817
661
457
231
188
176
157
178
168
137
240
517
350
400
384
197
Wind (km/h)
15
ENE
20
E
15
E
20
E
20
ESE
10
SSE
15
S
5
SE
5
ESE
15
E
15
ENE
15
E
20
ENE
15
ENE
15
ENE
15
ENE
20
ENE
20
ENE
15
ENE
20
ENE
15
ENE
Wind State
cross-on
cross
cross
cross
cross-off
cross-off
off
cross-off
cross-off
cross
cross
cross
cross
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
12:17PM0.80m
11:18PM0.35m
12:51PM0.84m
00:17AM0.43m
1:22PM0.86m
1:02AM0.51m
1:49PM0.85m
1:44AM0.59m
2:14PM0.82m
2:23AM0.65m
2:37PM0.77m
3:02AM0.68m
2:57PM0.71m
3:41AM0.70m
Low Tide
7:43PM0.28m
5:19AM0.03m
7:44PM0.24m
6:13AM0.00m
7:57PM0.20m
6:59AM-0.01m
8:15PM0.16m
7:41AM0.02m
8:35PM0.11m
8:20AM0.07m
8:55PM0.08m
8:58AM0.13m
9:16PM0.05m
part cloud
thunderstorm
thunderstorm
part cloud
part cloud
clear
clear
clear
thunderstorm
clear
clear
part cloud
clear
clear
part cloud
clear
part cloud
rain showers
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:11
6:11
6:11
6:11
6:11
6:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:37
6:36
6:35
6:34
6:32
6:31
6:30
 mm
2
3
2
1
Temp °C
27
27
26
27
28
27
29
29
28
27
27
27
27
27
25
26
26
25
26
26
25
Feels °C
28
28
26
28
29
28
31
33
32
30
29
29
28
28
25
26
27
25
26
26
24
  • 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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