Waialua Rivermouth surfForecast / HAW – Molokai / USA

information circle16 Day Weather and Surf, issued 1 pm Sunday 17 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
25.2° 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-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 15s period and expected on Sunday (May 17) at 11PM.

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 25°C on Sun afternoon, min 23°C on Sun night). Mainly fresh winds.

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Fri night. Warm (max 24°C on Wed afternoon, min 22°C on Thu night). Mainly strong winds.

Sun
17
Monday
18
Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Saturday
23
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
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)
1.9
ENE
8
2.2
E
8
2
E
8
1.8
ENE
8
1.8
E
8
1.7
E
8
1.8
E
8
1.9
ENE
8
2.4
ENE
8
2.4
ENE
8
2.4
ENE
8
2.5
ENE
8
3
ENE
8
2.5
ENE
8
2.4
ENE
8
2.5
ENE
8
2.5
ENE
8
2.3
ENE
8
2.5
ENE
8
2.1
ENE
9
2.1
ENE
9
Wave Graph
Metric surfscale
Energy kJ
497
612
526
437
401
374
428
497
695
762
762
865
974
977
801
824
848
721
798
629
645
Wind (km/h)
25
E
30
E
30
ENE
30
ENE
30
E
30
ENE
30
ENE
30
ENE
35
E
35
ENE
35
ENE
40
ENE
40
ENE
40
ENE
35
ENE
40
ENE
35
ENE
30
ENE
35
ENE
35
ENE
35
ENE
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
cross-on
cross-on
cross
cross-on
cross
cross
cross-on
cross-on
High Tide
4:01PM0.79m
3:46AM0.17m
4:51PM0.78m
4:45AM0.15m
5:43PM0.74m
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
Low Tide
11:47PM0.01m
9:20AM-0.11m
00:48AM0.01m
10:06AM-0.07m
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
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
rain showers
rain showers
clear
rain showers
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:48
5:47
5:47
5:47
5:46
5:46
5:46
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:58
6:59
6:59
6:59
7:00
7:00
7:00
7:00
2
1
1
Temp °C
25
24
24
24
23
24
24
23
24
24
23
23
23
23
23
23
23
23
23
23
23
25
23
22
22
22
22
23
21
21
21
20
19
18
18
18
18
18
19
18
19
19
Swell 1
Height (m)
Direction
Period (s)
0.6
NNW
10
0.4
NNW
10
0.4
SW
14
0.4
NW
13
0.5
NW
12
0.6
NNW
11
0.6
NNW
11
0.7
NW
11
0.7
NNW
10
0.5
NNW
11
0.4
NNW
11
0.3
NNW
10
0.4
NW
10
0.4
NW
11
0.4
NNW
10
0.5
NW
10
0.5
NW
11
0.5
NW
11
0.5
NW
10
0.4
NW
10
0.5
NW
13
Energy kJ
65
35
51
42
69
82
84
117
90
66
44
19
24
30
39
48
56
55
51
25
83
Swell 2
Height (m)
Direction
Period (s)
0.4
SSW
15
0.4
SW
14
0.4
NW
14
0.4
SW
13
0.4
SW
14
0.4
SW
14
0.4
SW
14
0.4
SSW
16
0.4
SSW
16
0.3
SSW
14
0.4
SW
16
0.3
SSW
16
0.3
SSW
15
0.3
SSW
15
0.2
SSW
14
0.2
SSW
14
0.2
SSW
16
0.2
SSW
16
0.3
SSW
16
0.4
NW
14
0.4
NW
10
Energy kJ
84
52
48
45
47
51
53
95
99
37
63
49
44
42
20
19
26
25
48
51
24
Swell 3
Height (m)
Direction
Period (s)
0.4
NW
18
0.4
NW
16
0.4
NW
9
0.3
SW
19
0.2
SSW
17
0.3
SW
18
0.2
SSW
18
0.2
NNW
13
0.3
SW
16
0.2
SSW
16
0.3
NW
9
0.1
NW
9
0.1
S
12
0.1
S
12
0.2
SSW
18
0.2
SSW
18
0.2
SSW
13
0.2
SSW
13
0.1
N
16
0.3
SSW
15
0.2
SSW
14
Energy kJ
78
62
21
59
29
49
31
17
41
26
13
3
3
3
31
30
17
17
5
42
20
Wind waves
Height (m)
Direction
Period (s)
1.9
ENE
8
2.2
E
8
2
E
8
1.8
ENE
8
1.8
E
8
1.7
E
8
1.8
E
8
1.9
ENE
8
2.4
ENE
8
2.4
ENE
8
2.4
ENE
8
2.5
ENE
8
3
ENE
8
2.5
ENE
8
2.4
ENE
8
2.5
ENE
8
2.5
ENE
8
2.3
ENE
8
2.5
ENE
8
2.1
ENE
9
2.1
ENE
9
Energy kJ
497
612
526
437
401
374
428
497
695
762
762
865
974
977
801
824
848
721
798
629
645
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
Distance (km)
25
23
23
23
23
23
23
23
28
23
23
25
176
159
25
174
23
23
25
25
23
Best forecast wave conditions in Molokai
Rating
(10 max)
2
Best forecast wave conditions in United States
Rating
(10 max)
4
5
4
4
4
3
2
4
1
2
3
3
2
2
1
2
2
4
2
3
2
Header Global
Rating
(10 max)
4
5
4
4
4
4
4
5
5
5
5
4
4
5
6
5
7
5
5
5
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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