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Waialua Rivermouth Surf Forecast
/ HAW – Molokai (14 breaks) / Hawaii (267 breaks) /
Surf Forecasts:
Waialua Rivermouth surfForecast / HAW – Molokai / USA
48hr Weather and Surf, issued 7 am Wednesday 20 May 2026 HSTForecast 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)How big are the waves at Waialua Rivermouth today?
The current surf forecast for Waialua Rivermouth at 10AM is: 2.3m 8s primary swell from a East direction and 0.7m 10s secondary swell from a North-northwest direction (forecast issued at 07:00am May 20). An open ocean swell of 0.4m 16s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | 7ft (2.2m) | 8s |
| Afternoon (20 May) | 8ft (2.5m) | 8s |
| Evening (20 May) | 8ft (2.5m) | 8s |
Table - waves today at Waialua Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 24°C on Wed morning, min 23°C on Wed morning). Mainly strong winds. | ||||||||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | Sat 23 | |||||||||||||||||||||
5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
E 8 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 8 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | |
539 | 634 | 743 | 893 | 915 | 962 | 902 | 936 | 893 | 984 | 1009 | 1125 | 1140 | 1194 | 1168 | 1072 | 1024 | 953 | 864 | 819 | 899 | 909 | 887 | 836 | |
Wind (km/h) | ||||||||||||||||||||||||
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-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross-on | cross-on | |
High Tide | 5:59AM0.15m | 6:39PM0.69m | 7:30AM0.17m | 7:35PM0.63m | 9:07AM0.22m | 8:31PM0.57m | ||||||||||||||||||
Low Tide | 10:59AM-0.02m | 2:48AM0.00m | 12:03PM0.05m | 3:38AM-0.00m | 1:28PM0.12m | |||||||||||||||||||
 |  | | | | | |  | | | | |  | | | | | | | | | | | | |
 | 5:47 | — | — | — | — | — | — | — | 5:47 | — | — | — | — | — | — | — | 5:46 | — | — | — | — | — | — | 5:46 |
 | — | — | — | — | 6:59 | — | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:00 | — | — | 7:00 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 23 | 23 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 |
21 | 20 | 21 | 21 | 19 | 20 | 19 | 19 | 19 | 19 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | |
Swell 1 Height (m) Direction Period (s) | NW 10 | NW 10 | NNW 10 | NNW 10 | NNW 11 | NNW 11 | NNW 11 | NNW 11 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NW 10 | NW 10 | NW 10 | NW 9 | NW 10 | NW 10 | NW 10 | NNW 10 | NNW 11 | NW 11 | NW 11 | NW 11 |
 kJ | 110 | 106 | 90 | 92 | 66 | 75 | 75 | 44 | 42 | 34 | 20 | 19 | 24 | 24 | 24 | 23 | 25 | 25 | 25 | 41 | 45 | 57 | 57 | 57 |
Swell 2 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 16 | SW 16 | SSW 14 | SW 14 | SSW 14 | SSW 16 | SW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 16 |
| kJ | 98 | 99 | 99 | 64 | 38 | 47 | 37 | 49 | 64 | 50 | 24 | 24 | 22 | 43 | 42 | 21 | 21 | 21 | 20 | 20 | 19 | 18 | 18 | 52 |
Swell 3 Height (m) Direction Period (s) | WSW 16 | SW 16 | SW 16 | SW 16 | SSW 16 | S 18 | SW 18 | WNW 9 | WNW 9 | WNW 9 | NW 9 | SSW 13 | S 12 | S 12 | S 12 | SW 12 | S 12 | S 12 | SSW 18 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | NW 19 |
| kJ | 25 | 41 | 41 | 41 | 26 | 6 | 12 | 8 | 8 | 8 | 3 | 16 | 3 | 3 | 3 | 6 | 3 | 3 | 31 | 31 | 30 | 30 | 29 | 15 |
Wind waves Height (m) Direction Period (s) | E 8 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 8 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 539 | 634 | 743 | 893 | 915 | 962 | 902 | 936 | 893 | 984 | 1009 | 1125 | 1140 | 1194 | 1168 | 1072 | 1024 | 953 | 864 | 819 | 899 | 909 | 887 | 836 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 23 | 23 | 27 | 25 | 28 | 23 | 23 | 23 | 23 | 23 | 25 | 25 | 28 | 23 | 27 | 174 | 27 | 23 | 27 | 27 | 52 | 27 | 174 | 51 |
Best forecast wave conditions in Molokai | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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