Kahului Harbor Surf Break

Lat Long: 20.90° N 156.48° W

Kahului Harbor Surf Forecast and Surf Report

Issued: 1 am 20 Sep 2026 (local time)

Forecast update in  hr  min

Today's Kahului Harbor sea temperature is
27.1°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 20 Sep 2026:

  • Most powerful swell: Wednesday 23 Sep, 5AM (local time) - 6ft (1.9m), 9s period, E swell with 641 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 9s and forecast to arrive on Wednesday (Sep 23) at 5AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 17s period and expected on Friday (Sep 25) at 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 5AM (Wed 23rd Sep)6ft (1.9m) 9s

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


Short Range Forecast

Mostly dry. Warm (max 28°C on Sun afternoon, min 25°C on Sun night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Thu morning. Warm (max 27°C on Wed morning, min 25°C on Wed night). Mainly fresh winds.

Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
1
1
0
1
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)
1.7
ENE
8
1.7
ENE
8
1.8
ENE
8
1.7
ENE
8
1.7
ENE
8
1.6
ENE
8
1.5
ENE
8
1.6
E
8
1.9
E
9
1.8
E
10
1.7
E
10
1.6
E
9
1.7
E
9
1.7
E
8
1.7
E
8
2
E
8
2
E
8
1.9
ENE
8
2.2
ENE
8
2.2
ENE
8
2.1
ENE
8
Wave Graph
Metric surfscale
Energy kJ
412
422
434
398
389
330
280
367
627
602
527
421
442
422
412
488
513
473
585
599
560
Wind (km/h)
20
ENE
25
NE
20
ENE
25
ENE
20
NE
20
ENE
15
ENE
20
ENE
20
ENE
20
ENE
20
ENE
20
ENE
25
ENE
20
ENE
20
ENE
30
ENE
30
ENE
25
ENE
30
E
25
ENE
25
ENE
Wind State
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross-on
cross
cross-on
cross
cross-on
cross
cross
cross
cross
cross
cross
cross
High Tide
11:58AM0.67m
11:04PM0.32m
12:24PM0.71m
11:46PM0.39m
12:46PM0.74m
00:21AM0.47m
1:07PM0.76m
00:55AM0.54m
1:27PM0.76m
1:29AM0.62m
1:47PM0.74m
2:06AM0.68m
2:07PM0.71m
2:44AM0.73m
Low Tide
7:29PM0.28m
4:47AM0.16m
7:14PM0.26m
5:35AM0.12m
7:18PM0.22m
6:14AM0.09m
7:29PM0.18m
6:50AM0.08m
7:44PM0.13m
7:26AM0.09m
8:03PM0.07m
8:03AM0.12m
8:24PM0.02m
clear
clear
part cloud
clear
clear
part cloud
clear
clear
part cloud
part cloud
clear
part cloud
rain showers
clear
part cloud
rain showers
part cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
6:13
6:13
6:13
6:15
6:15
6:15
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:23
6:22
6:22
6:21
6:20
6:19
6:17
 mm
1
1
Temp °C
27
28
25
28
27
26
27
27
26
27
27
26
27
27
26
26
26
25
26
27
25
Feels °C
27
28
25
28
27
27
29
28
27
28
27
27
27
27
26
26
25
24
24
25
22
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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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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