Kahului Harbor surf break

Kahului Harbor surfForecast / HAW – Maui / USA

information circle16 Day Weather and Surf, issued 1 am Wednesday 20 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 normal for this time of year)

Best Forecast Surf Conditions for Kahului Harbor this week:

The most powerful waves expected at Kahului Harbor in the next 16 days are 2.5m 9s and forecast to arrive on Thursday (May 21) 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 0.2m 16s period and expected on Wednesday (May 20) at 8AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8PM (Thu 21st May)8ft (2.5m) 9s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 25°C on Wed morning, min 22°C on Thu night). Mainly fresh winds.

Days 4-6 Weather Summary

Light rain (total 3mm), mostly falling on Mon night. Warm (max 25°C on Sat morning, min 22°C on Sat night). Mainly fresh winds.

Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
Monday
25
Tuesday
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)
1
0
0
0
0
1
0
0
1
0
0
0
1
0
1
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
8
2.1
ENE
9
2.1
ENE
8
2.3
ENE
9
2.2
ENE
9
2.3
ENE
9
2.2
ENE
9
2.1
ENE
8
2.1
ENE
8
2.2
ENE
8
2.2
ENE
9
2.1
ENE
8
2.1
ENE
8
2
ENE
8
1.8
ENE
8
1.8
NE
8
1.7
ENE
8
1.5
ENE
8
1.5
ENE
8
1.7
ENE
8
1.6
ENE
8
Wave Graph
Metric surfscale
Energy kJ
574
647
618
754
749
793
714
653
587
699
732
630
587
525
444
428
394
285
271
347
287
Wind (km/h)
20
ENE
25
ENE
25
ENE
30
ENE
30
ENE
25
ENE
30
ENE
30
ENE
25
ENE
25
ENE
30
ENE
25
ENE
25
ENE
25
ENE
25
ENE
20
ENE
25
ENE
25
ENE
25
ENE
25
ENE
20
ENE
cross
cross-on
cross-on
cross
cross-on
cross
cross-on
cross-on
cross
cross
cross-on
cross-on
cross
cross-on
cross
cross
cross-on
cross
cross
cross
cross
High Tide
6:26PM0.76m
4:28AM0.25m
7:24PM0.70m
6:54AM0.23m
8:21PM0.65m
9:34AM0.28m
9:11PM0.59m
11:05AM0.38m
9:53PM0.54m
12:00PM0.48m
10:27PM0.50m
12:40PM0.58m
10:58PM0.46m
Low Tide
10:21AM-0.09m
2:41AM0.24m
11:13AM0.00m
3:46AM0.20m
12:19PM0.11m
4:20AM0.16m
1:52PM0.20m
4:45AM0.11m
3:40PM0.27m
5:07AM0.07m
5:10PM0.30m
5:28AM0.02m
6:21PM0.31m
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
part cloud
rain showers
rain showers
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:46
5:46
5:46
5:45
5:45
5:45
5:45
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:58
6:58
6:59
6:59
7:00
7:00
7:00
3
1
Temp °C
25
25
24
25
25
23
25
25
23
25
24
23
25
25
23
25
25
23
25
24
23
24
23
23
22
23
20
21
22
20
22
20
20
23
23
21
24
23
21
24
22
21
Swell 1
Height (m)
Direction
Period (s)
0.6
NNW
10
0.6
NNW
10
0.4
NNW
11
0.3
NNW
10
0.3
NNW
10
0.2
NNW
10
0.4
NW
10
0.4
NW
11
0.4
NNW
11
0.4
NNW
10
0.4
NNW
16
0.6
NNW
14
0.6
NNW
13
0.6
NW
12
0.5
NW
12
0.5
NW
11
0.4
NW
11
0.4
NW
11
0.4
NW
10
0.3
NW
10
0.5
NW
15
Energy kJ
69
73
44
20
19
9
26
29
46
43
98
131
111
118
67
59
42
29
25
15
110
Swell 2
Height (m)
Direction
Period (s)
0.2
WSW
16
0.1
SW
16
0.1
SW
16
0.1
NW
9
0.1
SW
15
0.1
SW
15
0.1
S
14
0.1
S
14
0.1
SW
17
0.3
NNW
17
0.4
NW
10
0.4
NW
10
0.3
NW
10
0.1
S
15
0.1
S
16
0.1
S
15
0.1
W
19
0.1
N
20
0.2
NNW
18
0.2
NNW
10
Energy kJ
25
10
10
3
9
9
4
4
12
57
26
25
15
4
5
5
7
7
31
9
Swell 3
Height (m)
Direction
Period (s)
0.1
SW
16
0.1
W
18
0.1
N
20
0.1
SW
16
0.1
S
16
0.1
S
14
0.1
S
14
0.1
W
18
0.1
W
18
0.1
W
18
Energy kJ
10
6
7
10
5
4
4
6
6
6
Wind waves
Height (m)
Direction
Period (s)
2.1
ENE
8
2.1
ENE
9
2.1
ENE
8
2.3
ENE
9
2.2
ENE
9
2.3
ENE
9
2.2
ENE
9
2.1
ENE
8
2.1
ENE
8
2.2
ENE
8
2.2
ENE
9
2.1
ENE
8
2.1
ENE
8
2
ENE
8
1.8
ENE
8
1.8
NE
8
1.7
ENE
8
1.5
ENE
8
1.5
ENE
8
1.7
ENE
8
1.6
ENE
8
Energy kJ
574
647
618
754
749
793
714
653
587
699
732
630
587
525
444
428
394
285
271
347
287
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
12
19
18
19
18
18
19
143
18
18
19
18
12
18
18
12
18
18
12
18
18
Best forecast wave conditions in Maui
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
1
1
3
3
1
3
2
2
2
1
2
3
2
1
3
2
2
3
1
2
3
Header Global
Rating
(10 max)
4
5
5
5
5
7
6
5
5
9
6
5
5
4
4
5
5
4
5
5
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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