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Surf Forecasts:
Duds Reef surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 1 am Monday 20 Apr 2026 HSTForecast update in hr min s Forecast update imminent
Duds Reef surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Duds Reef sea temperature is
24.8° C
(Which is normal for this time of year)How big are the waves at Duds Reef today?
The current surf forecast for Duds Reef at 4AM is: 0.4m 12s primary swell from a South-southeast direction and 0.6m 6s secondary swell from a East direction (forecast issued at 01:00am April 20). An open ocean swell of 0.5m 14s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Apr) | 1.5ft (0.5m) | 12s |
| Afternoon (20 Apr) | 1.5ft (0.5m) | 14s |
| Evening (20 Apr) | 1.5ft (0.5m) | 14s |
Table - waves today at Duds Reef. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 20 | Tuesday 21 | Wednesday 22 | ||||||||||||||||||||||
| 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) (?) | 11 | 11 | 12 | 12 | 12 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 40 | 40 | 49 | 49 | 75 | 103 | 103 | 103 | 102 | 97 | 91 | 88 | 87 | 85 | 84 | 84 | 83 | 82 | 80 | 79 | 0 | 0 | 73 | 73 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- off | cross- off | cross- off | on | cross- on | glass | glass | glass | glass | glass | glass | cross | cross | cross- off | glass | cross | cross- off | cross- off | cross | on | glass | glass | cross |
High Tide / height (m) | 5:02AM 0.28 | 6:44PM 0.77 | 5:48AM 0.24 | 7:46PM 0.73 | 7:09AM 0.21 | |||||||||||||||||||
Low Tide / height (m) | 1:12AM 0.20 | 10:51AM 0.02 | 2:39AM 0.21 | 11:31AM 0.06 | 4:20AM 0.19 | 12:21PM 0.12 | ||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:09 | - | - | - | - | - | - | - | 6:07 | - | - | - | - | - | - | - | 6:07 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:52 | - | - | - | - | - | - | - | 6:52 | - | - | - | - | - | - | - | 6:52 | - |
 |  | |  | |  | | | | | | | | | |  | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 24 | 24 | 23 | 24 | 25 | 25 | 25 | 24 | 24 | 24 | 23 | 24 | 25 | 25 | 25 | 25 | 24 | 23 | 23 | 23 | 25 | 25 | 25 | 24 |
| Feels °C (?) | 27 | 27 | 25 | 27 | 27 | 27 | 28 | 27 | 28 | 28 | 26 | 27 | 27 | 26 | 27 | 28 | 26 | 25 | 26 | 26 | 27 | 27 | 28 | 27 |
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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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