Rivermouth_Wailuku Surf Break

Lat Long: 20.91° N 156.49° W

Rivermouth_Wailuku Surf Forecast and Surf Report

Issued: 1 am 08 Jul 2026 (local time)

Forecast update in  hr  min

Today's Rivermouth_Wailuku sea temperature is
26.2° C
0.4° 

Rivermouth_Wailuku surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Rivermouth_Wailuku surf forecast from 8 Jul 2026:

  • Most powerful swell: Sunday 12 Jul, 8PM (local time) - 6ft (1.8m), 8s period, ENE swell with 412 kJ wave energy.

Best Forecast Surf Conditions for Rivermouth_Wailuku this week:

The most powerful waves expected at Rivermouth_Wailuku in the next 16 days are 1.8m 8s and forecast to arrive on Sunday (Jul 12) 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 0.4m 16s period and expected on Sunday (Jul 12) at 11AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8PM (Sun 12th Jul)6ft (1.8m) 8s

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


Alright, let’s chew through what we got for Rivermouth_Wailuku. Honestly, it’s a rough stretch ahead. The wind is punishing – nothing but ENE or NE cross-onshore winds locking in day after day, and it’s killing any chance of a decent wave. Water temp is about 79°, which is totally normal for this time of year, nothing out of the ordinary.

You’ve got moderate wave energy in the 200s to 500s range, but the period is short, mostly 7 to 8 seconds, so it’s just messy windswell. On the 21st and 22nd, the combined energy jumps up into the 800s and 600s with a period of 15 to 17 seconds, so there’s real groundswell there. But it doesn’t matter – the wind is still cross-onshore and trashy, and at a reef like this, those long-period waves will be too fast and straight, just closing out in the chop.

The swell direction is ENE or E the whole time, while this spot really wants NNE. So the angle is off. Swell heights run from about 2 ft up to 7 ft, so there’s some push, but the quality is shot. From the 8th of July all the way to the 23rd, it’s nothing but “poor surf conditions.” No standout days. Not a single one. If you’re a kite surfer, that constant onshore breeze might get you stoked, but for anyone wanting to paddle out, this is a total dud. A long, blank stretch with nothing to recommend.

Rusty.

Short Range Forecast

Light rain (total 2mm), mostly falling on Thu night. Warm (max 26°C on Wed morning, min 24°C on Wed night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 3mm), mostly falling on Sat morning. Warm (max 26°C on Sun morning, min 23°C on Mon night). Wind will be generally light.

Wednesday
8
Thursday
9
Friday
10
Saturday
11
Sunday
12
Monday
13
Tuesday
14
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
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)
1.8
ENE
7
2
ENE
7
1.8
ENE
8
1.7
ENE
8
1.7
ENE
7
1.7
ENE
7
1.6
ENE
7
1.7
ENE
7
1.8
ENE
7
1.9
ENE
7
1.8
ENE
7
1.5
E
7
1.7
ENE
8
1.7
ENE
8
1.8
ENE
8
1.7
ENE
8
1.6
ENE
8
1.6
ENE
7
1.5
ENE
7
1.5
ENE
8
0.9
NNE
8
Wave Graph
Metric surfscale
Energy kJ
344
405
372
302
294
310
265
279
334
387
334
251
327
354
402
336
294
263
234
240
106
Wind (km/h)
25
ENE
25
ENE
20
E
20
ENE
20
ENE
20
ENE
20
ENE
25
ENE
20
ENE
25
ENE
25
ENE
20
ENE
20
ENE
20
ENE
20
ENE
20
ENE
20
NE
15
ENE
15
ENE
20
NE
15
ENE
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
10:41AM0.53m
7:00PM0.48m
11:52AM0.64m
12:42PM0.75m
9:34PM0.37m
1:26PM0.84m
11:19PM0.36m
2:08PM0.90m
00:31AM0.37m
2:48PM0.93m
1:30AM0.39m
3:26PM0.94m
2:24AM0.41m
Low Tide
3:32PM0.46m
3:32AM0.01m
4:29AM-0.05m
8:19PM0.37m
5:24AM-0.11m
8:39PM0.33m
6:18AM-0.15m
9:08PM0.29m
7:08AM-0.18m
9:39PM0.26m
7:55AM-0.18m
10:12PM0.24m
clear
clear
clear
clear
part cloud
rain showers
rain showers
part cloud
part cloud
rain showers
rain showers
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:50
5:50
5:50
5:50
5:52
5:52
5:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:10
7:10
7:10
7:09
7:09
7:09
7:09
 mm
1
1
2
1
Temp °C
26
26
25
26
26
25
26
26
25
25
25
25
26
26
25
25
26
24
26
26
25
Feels °C
25
25
25
26
26
25
27
27
25
24
25
25
26
25
25
24
25
24
26
26
25
  • 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 Rivermouth_Wailuku Surf forecast

The above surf forecast table for Rivermouth_Wailuku provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Rivermouth_Wailuku can be found by selecting the local surf guide option on the grey menu. Our Rivermouth_Wailuku 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 (Rivermouth_Wailuku) 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 Rivermouth_Wailuku 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.

Rivermouth_Wailuku is 4 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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