Rivermouth_Wailuku Surf Break

Lat Long: 20.91° N 156.49° W

Issued: 7 am 04 Jul 2026 (local time)

Forecast update in  hr  min

Today's Rivermouth_Wailuku sea temperature is
26.3° C

Slightly warmer than usual

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, 5PM (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 5PM. 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 5PM (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 be straight with you – this outlook is a tough one to swallow. I've got nothing but poor surf conditions across the entire 16-day run for Rivermouth_Wailuku. The ocean just isn't cooperating, so don't bother waxing up your board just yet.

The problem is a persistent cross-onshore wind from the ENE all the way through, gusting anywhere from 9 mph to 16 mph. That's keeping the surface choppy and messy. We're looking at chest-high waves, around 3.6 ft to 6.2 ft, but don't let the size fool you. The period is short, mostly 7 to 8 seconds, meaning these are weak, wind-driven slop with very little push. The combined swell energy is moderate at best, ranging from 180 to 397 (moderate wave energy), but it's all just bumpy, disorganised lines. The water temperature is sitting at a warm 79.3°F, which is about normal for this time of year with a 0.9°F anomaly, so at least it'll be a nice bath.

The wind state is always cross-on, so there's no clean window at all. From Saturday the 4th of July straight through to Sunday the 19th of July, every session is a write-off. Honestly, with the strong cross-onshore wind and the beach/reef setup, this might be more interesting for kite surfing than paddle surfing. There's no standout, no hidden gem for the next two weeks-plus. This is just one of those periods where the surf gods are on holiday.

Short Range Forecast

Some drizzle, heaviest during Mon morning. Warm (max 26°C on Sat morning, min 24°C on Sat night). Wind will be generally light.

Days 4-6 Weather Summary

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

Saturday
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
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)
1.5
ENE
8
1.5
ENE
8
1.5
ENE
8
1.5
ENE
8
1.7
ENE
7
1.4
NE
7
1.8
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
1.5
ENE
7
1.3
E
7
1.4
ENE
7
1.5
ENE
7
1.4
ENE
7
1.5
ENE
7
1.7
ENE
7
1.7
ENE
7
Wave Graph
Metric surfscale
Energy kJ
278
292
260
264
297
217
362
393
347
327
382
319
263
249
181
208
234
208
212
294
279
Wind (km/h)
20
ENE
20
ENE
20
ENE
25
ENE
25
ENE
20
ENE
25
ENE
30
ENE
20
E
20
ENE
25
ENE
25
ENE
20
ENE
20
ENE
20
E
20
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
5:37PM0.72m
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
9:34PM0.37m
Low Tide
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
8:19PM0.37m
clear
clear
part cloud
clear
clear
clear
rain showers
clear
part cloud
clear
clear
part cloud
part cloud
clear
clear
part cloud
clear
part cloud
rain showers
rain showers
rain showers
<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
 mm
1
1
2
1
Temp °C
26
26
25
26
26
24
26
26
24
26
26
24
26
26
24
26
26
25
26
26
25
Feels °C
26
26
25
25
25
23
24
24
22
25
25
23
25
25
23
26
25
25
28
27
26
Swell 1
Height (m)
Direction
Period (s)
0.4
NW
12
0.4
NW
12
0.4
NW
12
0.4
NW
11
0.3
NW
11
0.4
E
9
0.2
SSW
16
0.1
SW
16
0.1
SW
15
0.1
SW
15
0.1
SW
15
0.1
SW
15
0.1
SW
14
0.1
SW
14
0.8
NNE
6
0.1
W
15
0.2
W
14
0.2
W
13
0.2
W
13
0.2
W
14
0.3
W
13
Energy kJ
53
52
48
31
19
28
25
10
9
9
9
8
8
8
47
4
15
14
14
14
31
Swell 2
Height (m)
Direction
Period (s)
0.2
WSW
16
0.2
WSW
16
0.2
WSW
19
0.2
WSW
18
0.2
E
11
0.3
NW
11
0.1
NW
10
0.1
NW
10
0.1
NW
10
0.1
NW
9
0.1
NW
9
0.1
SW
14
0.1
S
13
0.1
S
13
0.1
S
13
0.2
N
8
0.1
SW
21
0.2
WSW
19
Energy kJ
25
24
35
31
9
18
4
4
4
3
3
7
3
3
3
4
17
37
Swell 3
Height (m)
Direction
Period (s)
0.1
SW
21
0.1
SW
20
0.1
SW
15
0.1
SW
15
0.2
WSW
18
0.3
SW
16
0.1
SE
10
0.1
W
16
0.1
W
16
0.1
W
15
0.1
W
16
0.1
W
18
0.1
W
21
Energy kJ
17
15
8
8
30
41
4
5
5
5
5
6
9
Wind waves
Height (m)
Direction
Period (s)
1.5
ENE
8
1.5
ENE
8
1.5
ENE
8
1.5
ENE
8
1.7
ENE
7
1.4
NE
7
1.8
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
1.5
ENE
7
1.3
E
7
1.4
ENE
7
1.5
ENE
7
1.4
ENE
7
1.5
ENE
7
1.7
ENE
7
1.7
ENE
7
Energy kJ
278
292
260
264
297
217
362
393
347
327
382
319
263
249
181
208
234
208
212
294
279
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
2
2
2
2
2
2
2
1
1
2
1
1
1
1
1
1
1
1
Distance (km)
20
20
14
20
20
20
20
20
20
14
20
20
14
14
14
14
14
14
14
14
14
Best forecast wave conditions in Maui
Rating
(10 max)
2
3
2
2
2
2
2
2
2
2
2
1
2
1
1
1
1
1
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
2
3
3
2
2
3
2
2
2
2
3
4
2
2
4
1
2
4
1
1
3
Header Global
Rating
(10 max)
5
9
7
5
5
8
7
5
5
9
8
9
9
6
6
5
5
4
6
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)
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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