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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 1 am Saturday 18 Apr 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
24.7° 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 8AM is: 1.3m 5s primary swell from a East direction (forecast issued at 01:00am April 18). An open ocean swell of 0.4m 13s is not directed at the surf break, a second open ocean swell of 0.4m 11s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Apr) | 4.5ft (1.4m) | 5s |
| Afternoon (18 Apr) | 5.5ft (1.7m) | 6s |
| Evening (18 Apr) | 5ft (1.5m) | 6s |
Table - waves today at Waialua Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 18 | Sunday 19 | Monday 20 | ||||||||||||||||||||||
| 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 | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 6 | 6 | 6 | 13 | 12 | 12 | 12 | 12 | 12 | 7 | 7 | 7 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 53 | 83 | 73 | 86 | 134 | 205 | 211 | 175 | 130 | 105 | 103 | 97 | 83 | 81 | 106 | 96 | 94 | 92 | 89 | 97 | 121 | 103 | 131 | 81 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | 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 |
High Tide / height (m) | 3:10AM 0.28 | 4:13PM 0.70 | 3:52AM 0.22 | 5:03PM 0.70 | 4:39AM 0.17 | 5:59PM 0.68 | ||||||||||||||||||
Low Tide / height (m) | 10:30PM 0.02 | 9:11AM -0.12 | 11:34PM 0.03 | 9:44AM -0.11 | 12:46AM 0.03 | 10:23AM -0.08 | ||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:05 | - | - | - | - | - | - | - | 6:05 | - | - | - | - | - | - | - | 6:03 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:46 | - | - | - | - | - | - | - | 6:46 | - | - | - | - | - | - | - | 6:46 | - |
 | | |  | | | |  | | |  |  | | | | | | | | | | |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - |
| Temp. °C | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 23 | 23 | 23 | 22 | 23 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 24 |
| Feels °C (?) | 23 | 23 | 22 | 22 | 22 | 23 | 25 | 23 | 23 | 23 | 22 | 23 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 24 | 23 | 24 | 25 | 25 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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