Waialua Rivermouth surfForecast / HAW – Molokai / USA

information circle16 Day Weather and Surf, issued 7 pm Tuesday 19 May 2026 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
25.4° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Waialua Rivermouth this week:

The most powerful waves expected at Waialua Rivermouth in the next 16 days are 3.0m 8s and forecast to arrive on Thursday (May 21) 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 0.4m 16s period and expected on Wednesday (May 20) at 5AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8PM (Thu 21st May)10ft (3.0m) 8s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 24°C on Tue night, min 23°C on Tue night). Mainly strong winds.

Days 5-7 Weather Summary

Light rain (total 4mm), mostly falling on Fri night. Warm (max 24°C on Sat afternoon, min 23°C on Fri night). Mainly strong winds.

Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
Monday
25
Tue
26
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.1
E
8
2.5
E
8
2.5
ENE
8
3
ENE
8
3
ENE
8
3
ENE
8
3
ENE
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.4
ENE
8
2.3
ENE
8
2.2
NE
8
2.4
ENE
8
2.2
ENE
8
1.9
ENE
8
1.7
ENE
8
Wave Graph
Metric surfscale
Energy kJ
579
804
893
936
1055
1118
1072
844
850
850
848
869
817
798
691
620
632
705
581
441
347
Wind (km/h)
30
E
35
E
35
ENE
35
ENE
40
E
40
ENE
35
ENE
40
ENE
40
ENE
35
ENE
40
ENE
40
ENE
35
ENE
40
ENE
35
ENE
30
E
40
ENE
40
ENE
35
ENE
40
ENE
35
ENE
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
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
5:59AM0.15m
6:39PM0.69m
7:30AM0.17m
7:35PM0.63m
9:07AM0.22m
8:31PM0.57m
10:26AM0.30m
9:25PM0.50m
11:24AM0.40m
10:15PM0.43m
12:10PM0.48m
11:01PM0.37m
12:49PM0.56m
Low Tide
1:50AM0.01m
10:59AM-0.02m
2:48AM0.00m
12:03PM0.05m
3:38AM-0.00m
1:28PM0.12m
4:19AM-0.01m
3:12PM0.17m
4:53AM-0.02m
4:55PM0.19m
5:23AM-0.03m
6:22PM0.19m
5:49AM-0.04m
7:35PM0.16m
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
rain showers
rain showers
part cloud
rain showers
clear
clear
clear
part cloud
part cloud
rain showers
rain showers
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:47
5:47
5:46
5:46
5:46
5:46
5:45
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:59
6:59
7:00
7:00
7:00
7:00
7:00
7:01
1
1
2
3
1
Temp °C
24
24
24
23
24
23
23
24
24
23
23
24
23
24
24
23
23
24
23
24
24
22
21
21
20
19
18
18
19
19
18
18
19
19
19
20
19
19
20
19
20
20
Swell 1
Height (m)
Direction
Period (s)
0.7
NW
11
0.7
NNW
10
0.5
NNW
11
0.4
NNW
11
0.3
NNW
10
0.4
NW
10
0.3
SSW
15
0.4
NW
10
0.4
NNW
11
0.5
NW
11
0.5
NW
10
0.6
NNW
16
0.7
NW
14
0.8
NW
13
0.7
NW
12
0.6
NW
12
0.6
NW
11
0.5
NW
11
0.4
NW
11
0.4
NW
10
0.4
NW
18
Energy kJ
117
90
66
44
20
24
42
25
45
57
52
160
191
193
149
108
97
57
40
25
86
Swell 2
Height (m)
Direction
Period (s)
0.4
SW
16
0.4
SSW
16
0.3
SW
16
0.3
SSW
16
0.2
SSW
16
0.2
SSW
15
0.2
NNW
9
0.2
SSW
14
0.2
SSW
14
0.2
SSW
16
0.4
NW
16
0.5
NW
10
0.4
NW
10
0.2
SSW
14
0.2
SSW
14
0.2
SSW
13
0.2
SSW
13
0.1
SW
15
0.2
SSW
14
0.2
S
13
0.4
NW
10
Energy kJ
62
99
42
49
24
22
8
21
19
26
69
50
24
20
18
18
17
8
20
14
24
Swell 3
Height (m)
Direction
Period (s)
0.2
NNW
13
0.3
SW
16
0.2
SSW
14
0.2
WNW
9
0.1
NW
9
0.1
S
12
0.2
NNW
11
0.1
SW
18
0.2
SSW
18
0.2
SSW
13
0.2
SSW
16
0.3
SSW
16
0.2
SSW
15
0.3
NW
10
0.1
S
16
0.1
S
12
0.1
SW
17
0.2
S
13
Energy kJ
17
41
19
8
3
3
11
13
30
17
25
48
21
15
5
3
11
14
Wind waves
Height (m)
Direction
Period (s)
2.1
E
8
2.5
E
8
2.5
ENE
8
3
ENE
8
3
ENE
8
3
ENE
8
3
ENE
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.4
ENE
8
2.3
ENE
8
2.2
NE
8
2.4
ENE
8
2.2
ENE
8
1.9
ENE
8
1.7
ENE
8
Energy kJ
579
804
893
936
1055
1118
1072
844
850
850
848
869
817
798
691
620
632
705
581
441
347
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
23
23
23
25
51
174
23
51
174
23
27
28
27
27
23
27
42
25
25
42
23
Best forecast wave conditions in Molokai
Rating
(10 max)
Best forecast wave conditions in United States
Rating
(10 max)
4
1
1
3
3
3
3
3
2
2
1
2
3
1
2
3
1
1
3
2
2
Header Global
Rating
(10 max)
4
4
5
4
5
5
7
6
5
5
8
5
5
5
4
4
4
4
4
4
4
  • 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 16 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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