Waialua Rivermouth surfForecast / HAW – Molokai / USA

information circle16 Day Weather and Surf, issued 7 pm Saturday 16 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 11PM. 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 15s period and expected on Sunday (May 17) at 5PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11PM (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

Light rain (total 4mm), mostly falling on Sat night. Warm (max 26°C on Sat night, min 23°C on Sun night). Winds increasing (calm on Sat night, fresh winds from the E by Sun night).

Days 5-7 Weather Summary

Some drizzle, heaviest during Thu night. Warm (max 24°C on Tue night, min 23°C on Tue night). Mainly strong winds.

Sunday
17
Monday
18
Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Sat
23
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
1
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)
1.7
E
8
1.6
ENE
8
1.9
ENE
8
2.4
E
8
2.1
E
8
2
E
8
1.8
E
8
1.9
E
8
2
E
8
1.9
ENE
8
2.4
ENE
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.4
ENE
8
2.5
ENE
8
2.2
ENE
8
2.2
ENE
8
2.5
ENE
8
2.2
ENE
8
2.2
ENE
8
Wave Graph
Metric surfscale
Energy kJ
393
326
509
670
573
509
412
419
451
485
644
850
787
768
782
866
682
627
798
692
692
Wind (km/h)
10
ENE
20
ENE
25
ENE
30
E
30
ENE
30
ENE
30
E
30
E
30
ENE
30
ENE
35
ENE
40
ENE
35
ENE
35
ENE
35
ENE
40
ENE
35
ENE
40
ENE
30
ENE
40
ENE
40
ENE
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
cross-on
cross
cross-on
cross
cross
cross-on
cross-on
cross
High Tide
2:54AM0.20m
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
Low Tide
10:48PM0.02m
8:38AM-0.12m
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
thunderstorm
clear
clear
rain showers
rain showers
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
clear
rain showers
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:48
5:48
5:47
5:47
5:47
5:46
5:46
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:58
6:58
6:59
6:59
6:59
7:00
7:00
7:00
1
1
1
1
1
Temp °C
26
24
24
24
24
24
24
24
24
24
24
24
23
24
24
23
23
24
23
23
24
30
24
23
23
23
22
23
22
22
22
21
21
20
20
20
19
18
20
18
18
19
Swell 1
Height (m)
Direction
Period (s)
1.7
E
8
1.6
ENE
8
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
0.4
NNW
10
0.4
NW
10
0.4
NW
9
0.4
NW
12
0.4
NNW
12
0.5
NW
11
0.5
NW
11
0.5
NW
10
Energy kJ
393
326
65
35
51
42
69
82
84
117
90
66
44
33
24
23
37
56
61
56
52
Swell 2
Height (m)
Direction
Period (s)
0.6
NNW
10
0.6
NNW
10
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
0.2
SSW
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
Energy kJ
72
68
85
53
48
45
47
51
53
95
99
37
24
49
44
42
21
19
26
25
48
Swell 3
Height (m)
Direction
Period (s)
0.4
SW
15
0.4
SSW
15
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
0.2
SSW
13
0.2
SSW
13
0.1
S
12
0.1
S
12
0.1
SW
18
0.2
SSW
18
0.2
SSW
13
0.2
SSW
13
0.1
N
13
Energy kJ
54
84
78
62
21
59
29
49
31
17
41
26
16
17
3
3
13
30
17
17
4
Wind waves
Height (m)
Direction
Period (s)
1.1
ENE
8
1.9
ENE
8
2.4
E
8
2.1
E
8
2
E
8
1.8
E
8
1.9
E
8
2
E
8
1.9
ENE
8
2.4
ENE
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.4
ENE
8
2.5
ENE
8
2.2
ENE
8
2.2
ENE
8
2.5
ENE
8
2.2
ENE
8
2.2
ENE
8
Energy kJ
165
509
670
573
509
412
419
451
485
644
850
787
768
782
866
682
627
798
692
692
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
15
19
23
23
23
23
25
23
23
23
27
25
23
23
27
27
25
61
23
23
27
Best forecast wave conditions in Molokai
Rating
(10 max)
2
Best forecast wave conditions in United States
Rating
(10 max)
2
2
4
4
4
1
4
3
3
4
4
1
3
1
2
3
1
2
3
1
2
Header Global
Rating
(10 max)
4
6
4
4
4
5
4
5
4
5
6
5
5
9
5
4
5
5
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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