Kahului Harbor Surf Break

Lat Long: 20.90° N 156.48° W

Kahului Harbor Surf Forecast and Surf Report

Issued: 1 pm 26 Aug 2026 (local time)

Forecast update in  hr  min

Today's Kahului Harbor sea temperature is
26.9°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 27 Aug 2026:

  • Most powerful swell: Tuesday 1 Sep, 8AM (local time) - 5.5ft (1.7m), 9s period, ENE swell with 444 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 1.7m 9s and forecast to arrive on Tuesday (Sep 01) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 17s period and expected on Saturday (Aug 29) at 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8AM (Tue 1st Sep)5.5ft (1.7m) 9s

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


The Lowdown

Alright, let’s talk about what’s going on. For the next 16 days, the only spot that’s been in the mix is Kahului Harbor (Maui), and it’s been a rough ride. The water’s about 80°, which is pretty normal for this time of year, so no big deal there.

Right now, the swell is coming from the ENE at about 5ft, but the period is short – just 6 seconds – and the wind is a cross-on from the NE at 12 mph. The combined energy is weak at 163, and the surf is poor. It’s choppy, messy, and not worth paddling out for. This is a reef break, but with that short period and onshore wind, it’s just not holding any shape.

We’ve got a long stretch of nothing. From Wednesday afternoon all the way through to the morning of Thursday the 3rd of September, it’s the same story: small swell, cross or cross-on winds, and poor conditions. The scores are all zeros, and the wave comment says it all – “poor surf conditions.” The combined energy does bump up a bit around the 29th of August (309-319), but it’s still weak to moderate, and the wind is still messing things up.

Then, from the morning of Thursday the 3rd of September through to the end of the forecast, we get a slight improvement. The scores go from 0 to 1, and the comments change to “marginal surf forecast or questionable tide conditions.” The swell drops off a bit, with heights around 4ft to 5ft, and the period stretches to 8 seconds. The wind eases off to a light breeze, mostly cross-shore, which is a big step up. The combined energy stays moderate (261-338). But it’s still not clean. It’s a marginal window, and the wave quality is still a question mark.

The best of the bunch would be the morning of Friday the 4th of September. Swell is 5ft from the ENE, period 8 seconds, and the wind is light and cross-shore from the ENE at 6 mph. The combined energy is 318. It’s not great, but it’s the least bad option. The direction is close to the optimum NNE, but not quite. Still, for a reef break, that period and light wind might give you a few workable waves. Expect crowds to be possible, as it’s a known spot.

But honestly, if you’re looking for a proper surf, this isn’t it. The setup is more interesting for kite surfing than paddle surfing, given the cross-on wind and short period.

Hang tight, the forecasts can change.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 27°C on Wed afternoon, min 24°C on Wed night). Wind will be generally light.

Days 5-7 Weather Summary

Some drizzle, heaviest during Sun night. Warm (max 27°C on Sat afternoon, min 24°C on Sat night). Wind will be generally light.

Wed
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
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
0
1
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)
1.4
ENE
6
1.2
ENE
7
1.2
ENE
7
1.2
ENE
7
1.1
ENE
7
1.2
ENE
6
1.3
ENE
6
1.3
ENE
6
1.5
ENE
6
1.5
ENE
7
1.4
ENE
7
1.5
ENE
7
1.4
ENE
7
1.5
ENE
7
1.7
ENE
8
1.8
NE
8
1.7
ENE
8
1.7
ENE
8
1.7
ENE
8
1.8
NE
8
Wave Graph
Metric surfscale
Energy kJ
149
135
135
135
114
115
127
140
181
210
191
204
175
198
348
418
374
392
383
418
Wind (km/h)
20
NE
15
ENE
15
ENE
20
ENE
15
ENE
15
ENE
20
NE
20
ENE
20
ENE
20
ENE
20
ENE
15
ENE
20
ENE
20
ENE
15
ENE
20
NE
15
ENE
15
ENE
20
NE
20
ENE
Wind State
cross-on
cross
cross
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross
cross-on
cross
cross-on
cross-on
cross
cross-on
cross-on
cross
High Tide
2:15PM0.81m
1:38AM0.52m
2:37PM0.81m
2:14AM0.56m
2:57PM0.80m
2:52AM0.60m
3:16PM0.76m
3:32AM0.62m
3:34PM0.71m
4:17AM0.64m
3:49PM0.64m
5:09AM0.63m
4:00PM0.58m
Low Tide
8:36PM0.21m
7:42AM-0.01m
8:55PM0.17m
8:15AM0.02m
9:15PM0.13m
8:48AM0.07m
9:38PM0.10m
9:22AM0.14m
10:01PM0.07m
9:59AM0.23m
10:28PM0.05m
10:40AM0.33m
10:59PM0.04m
clear
clear
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
rain showers
clear
clear
clear
clear
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:07
6:07
6:07
6:09
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:46
6:45
6:45
6:44
6:43
6:42
6:40
 mm
1
3
Temp °C
27
25
27
27
25
27
26
25
27
27
25
27
27
25
27
27
26
27
27
26
Feels °C
26
24
27
27
25
27
26
25
27
26
25
28
27
25
28
28
27
29
28
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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