Rivermouth_Wailuku Surf Break

Lat Long: 20.91° N 156.49° W

Issued: 1 pm 03 Jul 2026 (local time)

Forecast update in  hr  min

Today's Rivermouth_Wailuku sea temperature is
26.2° C

Normal for this time of year

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 4 Jul 2026:

  • Most powerful swell: Monday 6 Jul, 2PM (local time) - 6ft (1.9m), 8s period, ENE swell with 393 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 1.9m 8s and forecast to arrive on Monday (Jul 06) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 17s period and expected on Sunday (Jul 05) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2PM (Mon 6th Jul)6ft (1.9m) 8s

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


Updates in  hr  min  s Forecast update imminent

Alright folks, Rusty here. Let’s look at what’s on the table for the next 16 days at Rivermouth_Wailuku.

Straight up, this is a tough stretch. The entire 16-day window is a write-off for quality surf. The wind is locked in from the ENE, blowing cross-onshore the whole time. That means the surface is going to be choppy and messy from Friday the 3rd of July right through to Saturday the 18th of July. There’s no standout day, no window for clean conditions – it’s all poor surf.

The swell hangs around the 4 ft to 6 ft range for the first couple of weeks, mostly from the ENE with a short, weak period of 6 to 8 seconds, so the energy is weak to moderate. There are no long-period groundswells to save the day. On Monday the 13th of July, the swell direction swings to the WNW with a long 16-second period, but the height is a tiny 1 ft, so that’s not going to do anything, and the wind is still cross-onshore with rain showers.

The water temp is sitting at a warm 79°F with a small anomaly, so that’s about average for the time of year. Not a detail that will help the waves though.

Rivermouth_Wailuku is a reef setup that’s fairly consistent and exposed to the swell, with the optimum direction being NNE. The swell coming in is from the ENE and NE, which is off-angle. The crowds here are often an issue, but with conditions this poor, you might have it to yourself anyway.

Honestly, there is nothing worth paddling out for across this whole forecast period. The cross-onshore wind ruins every session. I’d leave the boards in the shed and find something else to do. Forecasts can change, but this looks like a long, flat, choppy run.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 26°C on Fri afternoon, min 24°C on Fri night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 4mm), mostly falling on Mon night. Warm (max 26°C on Mon afternoon, min 23°C on Mon night). Wind will be generally light.

Fri
3
Saturday
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
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
Height Map
Wave
Height (m)
Direction
Period (s)
1.6
ENE
8
1.5
ENE
8
1.5
ENE
8
1.5
ENE
8
1.4
NE
8
1.6
ENE
8
1.5
ENE
7
1.8
NE
7
1.7
ENE
7
1.9
ENE
8
1.7
ENE
8
1.7
ENE
8
1.8
ENE
8
1.7
ENE
8
1.6
ENE
7
1.6
ENE
7
1.5
ENE
7
1.5
ENE
7
1.4
ENE
7
1.5
ENE
7
1.2
ENE
7
Wave Graph
Metric surfscale
Energy kJ
302
285
278
292
229
287
250
340
329
393
337
347
382
327
263
263
223
212
197
209
132
Wind (km/h)
20
ENE
15
ENE
20
ENE
20
ENE
15
ENE
20
ENE
25
ENE
25
ENE
25
ENE
25
ENE
20
ENE
25
ENE
25
ENE
20
ENE
20
ENE
25
ENE
20
ENE
20
ENE
20
ENE
20
ENE
20
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
5:12PM0.76m
4:26AM0.37m
5:37PM0.72m
5:28AM0.37m
6:00PM0.66m
6:53AM0.38m
6:21PM0.61m
8:47AM0.43m
6:42PM0.55m
10:41AM0.53m
7:00PM0.48m
11:52AM0.64m
12:42PM0.75m
Low Tide
00:05AM0.23m
10:13AM0.06m
00:39AM0.20m
10:48AM0.16m
1:13AM0.16m
11:32AM0.26m
1:53AM0.12m
12:43PM0.37m
2:40AM0.06m
3:32PM0.46m
3:32AM0.01m
4:29AM-0.05m
clear
part cloud
part cloud
clear
part cloud
part cloud
clear
part cloud
clear
clear
rain showers
rain showers
clear
rain showers
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:48
5:48
5:50
5:50
5:50
5:50
5:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:10
7:10
7:10
7:10
7:10
7:10
7:10
7:10
 mm
1
1
2
Temp °C
26
25
25
26
24
26
26
24
26
26
24
25
25
24
25
26
25
26
26
25
26
Feels °C
26
25
24
26
23
25
25
23
24
24
23
23
23
23
24
26
25
26
26
25
26
Swell 1
Height (m)
Direction
Period (s)
0.4
NW
14
0.4
NW
13
0.4
NW
12
0.4
NW
12
0.4
ESE
9
0.3
NW
11
0.3
NW
11
0.3
NW
11
0.2
SSW
16
0.2
SSW
16
0.1
SW
15
0.1
SW
15
0.1
SW
16
0.1
SW
16
0.1
SW
14
0.1
SW
14
0.2
N
8
0.5
N
7
0.2
W
15
0.2
W
14
0.5
N
6
Energy kJ
46
56
53
52
26
19
19
18
25
24
9
9
10
10
8
8
5
25
17
15
20
Swell 2
Height (m)
Direction
Period (s)
0.2
WSW
17
0.2
WSW
16
0.2
WSW
16
0.2
WSW
16
0.4
NW
12
0.2
WSW
18
0.2
E
11
0.3
SW
16
0.1
NW
10
0.1
NW
10
0.1
SE
10
0.1
NW
9
0.1
NW
9
0.1
S
14
0.1
W
18
0.1
W
16
0.1
W
15
0.1
S
13
0.1
S
12
0.3
W
14
Energy kJ
29
26
25
24
48
31
9
41
4
4
4
3
3
4
6
5
4
3
3
32
Swell 3
Height (m)
Direction
Period (s)
0.1
SW
22
0.1
SW
21
0.1
SW
20
0.2
WSW
19
0.1
SW
15
0.1
SW
18
0.1
SE
10
0.1
SE
10
0.1
W
16
0.1
NW
10
0.1
NW
9
0.1
S
14
0.1
S
14
0.1
S
13
0.1
W
18
0.1
W
21
Energy kJ
18
17
15
35
8
12
4
4
5
4
3
4
4
3
6
9
Wind waves
Height (m)
Direction
Period (s)
1.6
ENE
8
1.5
ENE
8
1.5
ENE
8
1.5
ENE
8
1.4
NE
8
1.6
ENE
8
1.5
ENE
7
1.8
NE
7
1.7
ENE
7
1.9
ENE
8
1.7
ENE
8
1.7
ENE
8
1.8
ENE
8
1.7
ENE
8
1.6
ENE
7
1.6
ENE
7
1.5
ENE
7
1.5
ENE
7
1.4
ENE
7
1.5
ENE
7
1.2
ENE
7
Energy kJ
302
285
278
292
229
287
250
340
329
393
337
347
382
327
263
263
223
212
197
209
132
Nearest Offshore or Glassy
Rating
(10 max)
1
2
2
2
2
2
2
2
2
2
2
2
1
2
2
1
1
1
1
1
1
Distance (km)
20
20
20
20
14
14
20
20
20
20
20
20
20
14
14
20
14
14
20
14
20
Best forecast wave conditions in Maui
Rating
(10 max)
2
2
2
3
2
2
2
2
2
2
2
2
2
2
2
1
1
1
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
2
3
2
3
3
2
2
3
2
2
4
2
3
4
2
2
4
1
1
4
3
Header Global
Rating
(10 max)
7
5
5
5
9
7
7
5
8
7
5
6
9
8
9
8
5
5
5
4
9
  • 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 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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