Waialua Rivermouth surfForecast / HAW – Molokai / USA

information circle12 Day Weather and Surf, issued 7 am Wednesday 17 Dec 2025 HST
Forecast update in hr  min  s Forecast update imminent
Waialua Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Waialua Rivermouth sea temperature is
25.8° C
(Which is slightly warmer than usual)


Best Forecast Surf Conditions for Waialua Rivermouth this week:

The most powerful waves expected at Waialua Rivermouth in the next 12 days are 3.0m 9s and forecast to arrive on Wednesday (Dec 24) 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 1.7m 13s period and expected on Wednesday (Dec 17) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2PM (Wed 24th Dec)10ft (3.0m) 9s

Table - best surf conditions forecast for Waialua Rivermouth over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Some drizzle, heaviest during Thu night. Warm (max 26°C on Wed afternoon, min 24°C on Wed night). Winds decreasing (fresh winds from the SSW on Wed morning, light winds from the SSW by Thu night).

Days 3-6 Weather Summary Mostly dry. Warm (max 25°C on Sat morning, min 23°C on Sat night). Winds increasing (light winds from the ESE on Sat morning, fresh winds from the E by Sun night).

Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
1
2
2
2
3
2
3
2
1
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.1
N
1
N
1
N
1.7
NW
2.1
NW
2
NNW
1.8
NNW
1.9
NNW
1.8
NNW
1.8
N
1.5
N
1.9
N
1.7
N
1.5
N
1.4
N
1.2
N
1.2
N
1.3
N
1.3
NNE
1.1
N
1.3
NNE
Period(s) (?)131312141312121111111312121111111010101012
Wave
Graph
(?)Metric surfscale
Energy kJ (?)4073313011115143511148929018368347691039765553457317296339335221486
Wind
(km/h)
30
SSW
25
S
20
SSW
15
S
15
SSE
10
S
10
SSE
10
ENE
10
ESE
5
E
15
E
20
ENE
25
E
30
ENE
25
E
25
E
25
E
25
ENE
35
ENE
45
ENE
40
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
oncross-
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
/ height (m)
1:05PM
0.22
2:19AM
0.68
1:46PM
0.20
2:52AM
0.69
2:24PM
0.20
3:25AM
0.69
3:02PM
0.19
4:00AM
0.69
3:42PM
0.18
4:36AM
0.69
4:30PM
0.19
5:13AM
0.67
5:29PM
0.20
Low Tide
/ height (m)
9:27AM
0.11
6:53PM
-0.02
10:02AM
0.09
7:25PM
-0.03
10:37AM
0.07
7:58PM
-0.04
11:12AM
0.06
8:32PM
-0.04
11:49AM
0.05
9:07PM
-0.02
12:28PM
0.05
9:45PM
-0.00
1:05PM
0.05
10:27PM
0.04
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Sunrise6:56--6:56--6:58--6:58--6:58--7:00--7:00--
Sunset-5:47--5:49--5:49--5:50--5:50--5:51--5:51-
clear
clear
part cloud
cloud
part cloud
thunderstorm
cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
rain showers
part cloud
Rain (mm)
-----1-------------1-
Temp. °C252625262625252524252524242424242424242323
Feels °C (?)232425262627272726282625232222222222201817
  • 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 Waialua Rivermouth Surf forecast

The above surf forecast table for Waialua Rivermouth provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Waialua Rivermouth can be found by selecting the local surf guide option on the grey menu. Our Waialua Rivermouth 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 (Waialua Rivermouth) 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 Waialua Rivermouth 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.

Are you planning a vacation in Molokai? If you are looking for accommodation near Waialua Rivermouth, camping, hotels and condos and appartments in Molokai, consider staying in Kaunakakai - Molokai which is 36 km (22 miles) away. Other places in and around Molokai where you can find information about places to rent, and car hire include Wailuku which is 36 km (22 miles) away, Kahului, Lanai - Lanai and Kihei.

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