Rivermouth_Wailuku surfForecast / HAW – Maui / USA

information circle16 Day Weather and Surf, issued 1 pm Saturday 21 Mar 2026 HST
Forecast update in hr  min  s Forecast update imminent
Rivermouth_Wailuku surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Rivermouth_Wailuku sea temperature is
24.5° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Rivermouth_Wailuku this week:

The surf forecast for Rivermouth_Wailuku over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Mar 21) at 8PM. The primary swell is predicted to be 1.7m and 11s period with a secondary swell of 0.4m and 7s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Rivermouth_Wailuku in the next 16 days are 1.7m 11s and forecast to arrive on Saturday (Mar 21) at 8PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Saturday (Mar 21) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Sat 21st Mar)5.5ft (1.7m) 11s
Best Surf 8PM (Sat 21st Mar)5.5ft (1.7m) 11s
Most Powerful 8PM (Sat 21st Mar)5.5ft (1.7m) 11s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 24mm), heaviest during Sat night. Warm (max 25°C on Sat afternoon, min 21°C on Mon night). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 4mm), mostly falling on Tue night. Warm (max 23°C on Tue afternoon, min 21°C on Tue night). Wind will be generally light.

Sat
21
Sunday
22
Monday
23
Tuesday
24
Wednesday
25
Thursday
26
Friday
27
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
3
3
2
3
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.7
N
1.5
N
0.9
N
1.1
N
1
N
0.9
N
1.1
NNE
0.9
N
1.8
NNE
2
NNE
2.1
NNE
1.8
NNE
1.8
NE
1.5
NNE
1.6
NE
1.7
NE
1.4
NE
1.2
NE
1.2
NE
0.8
NW
1.2
ENE
Period(s) (?)12111111101091188889999999129
Wave
Graph
(?)Metric surfscale
Energy kJ (?)778535185274206162216182446512573453470343384468328230235217207
Wind
(km/h)
15
SSW
15
SSW
15
SSW
5
S
0
S
10
NNE
15
NE
10
ENE
15
NE
20
NE
20
ENE
25
ENE
25
NE
25
NE
20
NE
25
NE
20
NE
20
NE
25
NE
25
ENE
30
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffoffcross-
off
glassoncross-
on
cross-
on
cross-
on
oncross-
on
cross-
on
cross-
on
cross-
on
cross-
on
oncross-
on
cross-
on
cross-
on
cross-
on
cross-
on
High Tide
/ height (m)
4:38PM
0.66
3:33AM
0.46
5:34PM
0.63
3:39AM
0.40
6:48PM
0.60
8:37PM
0.59
10:25PM
0.61
11:28PM
0.64
11:08AM
0.23
12:10AM
0.67
12:06PM
0.32
Low Tide
/ height (m)
10:35PM
0.21
10:16AM
-0.12
11:36PM
0.30
10:51AM
-0.10
11:35AM
-0.05
12:48PM
0.01
2:55PM
0.05
7:17AM
0.16
4:36PM
0.04
7:13AM
0.13
Sat
21
Sunday
22
Monday
23
Tuesday
24
Wednesday
25
Thursday
26
Friday
27
Sunrise--6:28--6:26--6:26--6:24--6:24--6:22--6:22
Sunset6:37--6:37--6:37--6:37--6:37--6:37--6:38--
thunderstorm
mod rain
thunderstorm
light rain
light rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
thunderstorm
thunderstorm
clear
part cloud
rain showers
clear
part cloud
clear
clear
clear
part cloud
Rain (mm)
284311311-21--1------
Temp. °C252424232323232223232223232223232223242223
Feels °C (?)262526252625222222222121212021212121222020
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  • 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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