Waialua Rivermouth surfForecast / HAW – Molokai / USA

information circle12 Day Weather and Surf, issued 1 am Friday 05 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
26.3° C
(Which is 1.0°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Waialua Rivermouth this week:

The surf forecast for Waialua Rivermouth over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Dec 10) at 8AM. The primary swell is predicted to be 2.4m and 15s period with a secondary swell of 0.8m and 8s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Waialua Rivermouth in the next 12 days are 2.3m 17s and forecast to arrive on Tuesday (Dec 09) 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 0.9m 4s period and expected on Friday (Dec 12) at 8AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Wed 10th Dec)8ft (2.4m) 15s
Best Surf 8AM (Wed 10th Dec)8ft (2.4m) 15s
Most Powerful 8PM (Tue 9th Dec)7.5ft (2.3m) 17s

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 Sun morning. Warm (max 25°C on Fri morning, min 23°C on Sat night). Mainly fresh winds.

Days 3-6 Weather Summary Light rain (total 3mm), mostly falling on Tue night. Warm (max 25°C on Wed afternoon, min 23°C on Mon morning). Wind will be generally light.

Friday
05
Saturday
06
Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Thursday
11
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
2
2
3
4
2
3
1
1
0
Swell
Height Map
Wave Height (m) & direction (?)
2.1
NW
2.2
NW
2
NNW
1.7
NNW
1.6
NNW
1.4
NNW
1.3
NNW
1.2
NNW
1
NNW
0.9
NNW
0.9
NW
1
NW
0.9
NW
1.6
NW
2.4
NW
2.3
NW
2.1
NW
1.8
NW
1.6
NW
1.5
NW
1.4
NW
Period(s) (?)131614131312121212111514191816141413131212
Wave
Graph
(?)Metric surfscale
Energy kJ (?)158922331538100282460849344026921633541254116342905214416801144837635533
Wind
(km/h)
35
E
30
ENE
25
E
25
E
25
ENE
20
E
20
E
25
ENE
20
E
25
E
25
ENE
20
E
15
E
15
E
10
SSW
5
SSE
15
SSE
10
SSW
15
SSW
15
S
15
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
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
glasscross-
on
cross-
on
cross-
on
cross-
on
cross-
on
High Tide
/ height (m)
3:05PM
0.20
4:11AM
0.84
3:59PM
0.19
5:00AM
0.80
5:00PM
0.19
5:49AM
0.74
6:14PM
0.20
6:38AM
0.68
7:43PM
0.23
7:27AM
0.60
9:15PM
0.30
8:15AM
0.53
10:30PM
0.38
Low Tide
/ height (m)
11:08AM
0.04
8:43PM
-0.09
12:02PM
0.04
9:28PM
-0.06
12:56PM
0.04
10:16PM
-0.02
1:49PM
0.04
11:09PM
0.05
2:37PM
0.04
12:14AM
0.12
3:20PM
0.04
1:41AM
0.19
3:56PM
0.03
3:33AM
0.24
Friday
05
Saturday
06
Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Thursday
11
Sunrise6:50--6:50--6:50--6:52--6:52--6:52--6:52--
Sunset-5:45--5:45--5:45--5:45--5:45--5:45--5:45-
clear
part cloud
part cloud
clear
part cloud
clear
thunderstorm
clear
clear
clear
clear
clear
clear
rain showers
rain showers
part cloud
clear
clear
clear
clear
rain showers
Rain (mm)
------1------12-----2
Temp. °C252524242424242424242423242424242524252524
Feels °C (?)222221222223232222222221242425272626252424
  • 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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