Kahului Harbor surf break

Kahului Harbor surfForecast / HAW – Maui / USA

information circle16 Day Weather and Surf, issued 1 am Saturday 09 May 2026 HST
Forecast update in hr  min  s Forecast update imminent
Kahului Harbor surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kahului Harbor sea temperature is
25.4° C
(Which is slightly warmer than usual)

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 Friday (May 15) at 5PM. The primary swell is predicted to be 1.0m and 12s period with a secondary swell of 1.3m and 7s. 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 1.1m 14s and forecast to arrive on Friday (May 15) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 5s period and expected on Sunday (May 10) at 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Fri 15th May)3.5ft (1.0m) 12s
Best Surf 5PM (Fri 15th May)3.5ft (1.0m) 12s
Most Powerful 2AM (Fri 15th May)3.5ft (1.1m) 14s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Some drizzle, heaviest during Sun night. Warm (max 25°C on Sat morning, min 22°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Thu afternoon. Warm (max 25°C on Tue morning, min 22°C on Tue night). Wind will be generally light.

Saturday
9
Sunday
10
Monday
11
Tuesday
12
Wednesday
13
Thursday
14
Friday
15
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
0
0
0
0
0
0
0
0
1
1
0
2
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
NW
11
0.8
NW
11
0.7
NW
11
0.9
NNW
11
1
NNW
10
1
NNW
12
0.9
NNW
12
1.3
ENE
8
0.9
NNW
11
1.2
E
6
1.3
ENE
6
1.6
ENE
6
1.6
ENE
7
1.7
ENE
7
1.3
NNE
8
1.7
NE
8
1.7
ENE
8
1.1
NW
14
1.1
NW
13
1
NW
12
0.9
NW
12
Wave Graph
Metric surfscale
Energy kJ
205
140
121
215
210
289
239
204
180
102
130
182
206
286
196
344
314
443
394
301
205
Wind (km/h)
15
ENE
15
ENE
15
ENE
15
ENE
20
ENE
20
ENE
20
ENE
25
NE
20
ENE
20
ENE
25
ENE
20
E
20
E
25
ENE
20
ENE
15
ENE
20
ENE
15
ENE
10
ENE
5
ENE
0
NW
cross-on
cross-on
cross
cross
cross
cross
cross
cross-on
cross
cross
cross
cross
cross
cross-on
cross
cross
cross
cross-on
cross-on
glassy
glassy
High Tide
9:28PM0.56m
10:10AM0.27m
10:10PM0.56m
11:18AM0.37m
10:46PM0.55m
12:05PM0.49m
11:19PM0.52m
12:48PM0.61m
11:51PM0.50m
1:30PM0.72m
00:25AM0.46m
2:13PM0.80m
1:00AM0.43m
Low Tide
12:37PM0.15m
5:12AM0.17m
2:41PM0.20m
5:19AM0.12m
4:22PM0.22m
5:36AM0.05m
5:38PM0.23m
5:59AM-0.03m
6:41PM0.23m
6:27AM-0.11m
7:39PM0.23m
6:59AM-0.17m
8:35PM0.23m
part cloud
part cloud
part cloud
part cloud
clear
rain showers
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
clear
rain showers
rain showers
part cloud
part cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:50
5:50
5:50
5:48
5:48
5:48
5:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:52
6:53
6:53
6:54
6:54
6:54
6:55
1
1
1
2
Temp °C
25
25
24
25
25
24
25
25
23
25
25
24
25
25
24
25
25
23
24
25
24
26
25
25
25
24
24
24
23
21
24
23
22
24
23
23
25
24
22
25
28
27
Swell 1
Height (m)
Direction
Period (s)
0.9
NW
11
0.8
NW
11
0.8
N
7
0.9
NNW
11
1
NNW
10
1
NNW
12
0.9
NNW
12
0.9
NNW
11
0.9
NNW
11
0.7
N
7
0.7
NNW
11
0.7
NNW
10
0.7
NNW
10
0.5
NW
9
1.3
NNE
8
0.7
NW
15
0.9
NW
15
1.3
NE
7
1.3
ENE
7
1.3
ENE
7
1.1
NE
7
Energy kJ
205
140
57
215
210
289
239
204
180
42
117
86
81
40
196
232
314
174
183
164
102
Swell 2
Height (m)
Direction
Period (s)
0.6
N
6
0.6
N
7
0.7
NW
11
0.4
N
7
0.4
NW
13
0.1
W
19
0.1
SW
18
0.1
SW
18
0.2
N
14
0.6
NNW
11
0.6
N
6
0.2
N
12
0.2
N
12
0.1
N
12
0.4
NW
17
0.3
NW
9
0.5
N
9
1.1
NW
14
1.1
NW
13
1
NW
12
0.9
NW
12
Energy kJ
27
32
121
14
63
7
12
12
15
102
29
12
12
3
74
13
36
443
394
301
205
Swell 3
Height (m)
Direction
Period (s)
0.2
N
10
0.1
NW
15
0.2
WNW
14
0.1
NW
15
0.1
S
13
0.1
S
13
0.1
SW
18
0.6
NW
10
0.4
NW
10
0.1
SW
16
0.1
SW
16
0.1
SW
15
0.3
NW
9
0.1
SW
15
0.1
SW
18
0.6
E
8
0.3
N
8
0.2
N
8
0.7
E
8
Energy kJ
7
8
18
8
3
3
12
65
24
10
10
9
13
8
12
42
12
5
57
Wind waves
Height (m)
Direction
Period (s)
0.6
E
8
0.9
E
4
0.8
E
5
1
E
6
1.1
E
5
1.1
ENE
5
1.2
ENE
6
1.3
ENE
8
1.3
ENE
5
1.2
E
6
1.3
ENE
6
1.6
ENE
6
1.6
ENE
7
1.7
ENE
7
1.1
E
7
1.7
NE
8
1.7
ENE
8
0.9
ESE
8
Energy kJ
46
28
32
62
52
61
115
201
91
96
130
182
206
286
127
344
306
105
Nearest Offshore or Glassy
Rating
(10 max)
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
2
2
Distance (km)
4
18
12
12
12
12
12
18
12
12
18
18
12
18
12
18
19
18
4
0
0
Best forecast wave conditions in Maui
Rating
(10 max)
2
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
2
2
3
2
3
Best forecast wave conditions in United States
Rating
(10 max)
3
2
4
2
2
3
3
2
3
2
1
3
3
2
3
3
3
3
3
3
3
Header Global
Rating
(10 max)
5
4
4
9
5
5
5
6
9
9
9
9
6
5
5
5
6
5
5
6
5
  • 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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