Waialua Rivermouth surfForecast / HAW – Molokai / USA

information circle12 Day Weather and Surf, issued 1 am Sunday 14 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 surf forecast for Waialua Rivermouth over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Dec 16) at 5AM. The primary swell is predicted to be 1.6m and 13s period. 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 2.4m 13s and forecast to arrive on Sunday (Dec 14) 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 1.5m 11s period and expected on Sunday (Dec 14) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Tue 16th Dec)5ft (1.6m) 13s
Best Surf 8AM (Tue 16th Dec)5ft (1.5m) 13s
Most Powerful11PM (Sun 14th Dec)8ft (2.4m) 13s

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 Sun morning. Warm (max 26°C on Sun afternoon, min 24°C on Sun night). Wind will be generally light.

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

Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
2
2
2
2
3
3
1
2
0
0
0
0
2
2
3
3
3
2
2
0
Swell
Height Map
Wave Height (m) & direction (?)
0.8
NW
1.6
NW
2.2
NW
1.7
N
1.8
N
1.6
N
1.5
N
1.3
N
1.4
N
1.1
N
1
N
0.9
N
0.9
NNW
1.6
NW
1.7
NNW
1.7
NNW
1.6
NNW
1.8
NNW
1.8
NNW
1.6
NNW
1.6
N
Period(s) (?)151113151414131213131312141312121112121213
Wave
Graph
(?)Metric surfscale
Energy kJ (?)269622165912411263915734485660407331244316802849723631970931794825
Wind
(km/h)
15
SSW
15
S
10
S
15
SSE
15
SSE
5
ENE
0
ESE
10
E
10
SSW
25
S
25
S
25
S
20
S
15
SSE
10
S
5
SE
10
NE
10
E
15
ENE
15
ENE
20
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
cross-
on
cross-
on
cross-
on
oncrossglasscross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
oncross-
on
glasscross-
off
cross-
on
cross-
on
crosscross-
on
High Tide
/ height (m)
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
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
Low Tide
/ height (m)
5:24PM
-0.00
7:59AM
0.18
5:52PM
-0.01
8:48AM
0.14
6:21PM
-0.02
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
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunrise6:54--6:56--6:56--6:56--6:56--6:58--6:58--
Sunset-5:46--5:46--5:47--5:47--5:49--5:49--5:50-
thunderstorm
thunderstorm
thunderstorm
cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
clear
rain showers
part cloud
clear
rain showers
clear
clear
clear
Rain (mm)
112-----------2--1---
Temp. °C252624252525252525252525252625252624242424
Feels °C (?)262625272626282729262324252627282926262525
  • 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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