Waialua Rivermouth surfForecast / HAW – Molokai / USA

information circle12 Day Weather and Surf, issued 1 pm Wednesday 10 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
25.9° C
(Which is slightly warmer than usual)


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 Thursday (Dec 11) at 11AM. The primary swell is predicted to be 2.1m and 13s period with a secondary swell of 0.7m and 8s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Waialua Rivermouth in the next 12 days are 2.1m 14s and forecast to arrive on Wednesday (Dec 10) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 12s period and expected on Monday (Dec 15) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Thu 11th Dec)7ft (2.1m) 13s
Best Surf11AM (Thu 11th Dec)7ft (2.1m) 13s
Most Powerful11PM (Wed 10th Dec)7ft (2.1m) 14s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Light rain (total 4mm), mostly falling on Thu morning. Warm (max 26°C on Wed afternoon, min 22°C on Thu morning). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 4mm), mostly falling on Sat night. Warm (max 26°C on Tue morning, min 24°C on Sat night). Wind will be generally light.

Wed
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
2
3
4
4
4
2
2
0
0
0
1
0
1
2
0
0
0
1
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
2.3
NW
2
NW
2.1
NW
2.2
NW
1.9
NW
1.5
NW
1.3
NNW
1.2
N
1.5
NNW
1.4
NNW
1
NNW
0.8
NW
1.4
NW
2
NW
1.8
NW
1.5
N
1.6
N
1.4
N
1.1
N
0.9
N
1.1
NW
Period(s) (?)141313121211111110101015111312151413121216
Wave
Graph
(?)Metric surfscale
Energy kJ (?)223213671452146210295343963514513922092624921367925953960663368228653
Wind
(km/h)
20
SW
15
SW
15
NNW
15
N
10
NNE
10
NE
10
SE
20
S
15
SSW
20
S
10
SW
10
SSE
15
SE
15
S
25
SSW
15
S
20
E
15
S
30
SSW
30
S
25
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscrosscross-
off
cross-
off
cross-
off
crossoncross-
on
cross-
on
cross-
on
crossononcross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
High Tide
/ height (m)
9:15PM
0.30
8:15AM
0.53
10:30PM
0.38
9:03AM
0.45
11:25PM
0.46
9:52AM
0.38
12:07AM
0.54
10:42AM
0.32
12:43AM
0.59
11:32AM
0.27
1:16AM
0.64
12:20PM
0.24
1:47AM
0.67
1:05PM
0.22
Low Tide
/ height (m)
3:20PM
0.04
1:41AM
0.19
3:56PM
0.03
3:33AM
0.24
4:28PM
0.02
5:24AM
0.24
4:57PM
0.01
6:53AM
0.22
5:24PM
-0.00
7:59AM
0.18
5:52PM
-0.01
8:48AM
0.14
6:21PM
-0.02
9:27AM
0.11
Wed
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Sunrise--6:52--6:54--6:54--6:54--6:56--6:56--6:56
Sunset5:45--5:45--5:45--5:46--5:46--5:46--5:47--
clear
clear
rain showers
rain showers
part cloud
part cloud
part cloud
clear
clear
clear
rain showers
clear
clear
part cloud
thunderstorm
thunderstorm
part cloud
part cloud
clear
thunderstorm
clear
Rain (mm)
--31------2---11---2-
Temp. °C262424232323232324252425252525252526262525
Feels °C (?)242324242324242323242526262724232527252424
  • 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 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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