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Backdoor Surf Forecast
/ HAW – Oahu (122 breaks) / Hawaii (267 breaks) /
Surf Forecasts:
Backdoor surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 7 pm Saturday 18 Apr 2026 HSTForecast update in hr min s Forecast update imminent
Backdoor surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Backdoor sea temperature is
24.5° C
(Which is normal for this time of year)How big are the waves at Backdoor today?
The current surf forecast for Backdoor at 4AM is: 0.4m 12s primary swell from a West-southwest direction and 0.4m 11s secondary swell from a Northwest direction (forecast issued at 07:00pm April 18). An open ocean swell of 1.0m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Apr) | 1.5ft (0.4m) | 13s |
| Afternoon (19 Apr) | 2ft (0.6m) | 13s |
| Evening (19 Apr) | 2ft (0.6m) | 12s |
Table - waves today at Backdoor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | |||||||||||||||||||||
| 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 | 5 AM | 8 AM | 11 AM | 2 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 11 | 11 | 11 | 12 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 13 | 13 | 14 | 16 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 69 | 63 | 60 | 77 | 46 | 45 | 61 | 106 | 95 | 90 | 89 | 89 | 86 | 77 | 58 | 57 | 57 | 55 | 85 | 88 | 100 | 78 | 77 | 89 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | off | cross- off | cross- off | cross- off | cross- off | off | glass | glass | glass | glass | glass |
High Tide / height (m) | 2:12AM 0.42 | 5:01PM 0.78 | 1:56AM 0.39 | 6:01PM 0.76 | ||||||||||||||||||||
Low Tide / height (m) | 10:53PM 0.37 | 9:02AM -0.00 | 12:36AM 0.39 | 9:35AM 0.01 | 10:12AM 0.05 | |||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:09 | - | - | - | - | - | - | - | 6:07 | - | - | - | - | - | - | - | 6:07 | - | - |
| Sunset | 6:52 | - | - | - | - | - | - | - | 6:52 | - | - | - | - | - | - | - | 6:52 | - | - | - | - | - | - | - |
 |  |  | | |  | |  | |  | | | | | |  | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - |
| Temp. °C | 24 | 23 | 23 | 22 | 22 | 23 | 24 | 25 | 24 | 24 | 23 | 23 | 23 | 23 | 25 | 25 | 24 | 24 | 24 | 23 | 23 | 23 | 24 | 25 |
| Feels °C (?) | 25 | 23 | 24 | 23 | 22 | 22 | 24 | 26 | 26 | 26 | 25 | 24 | 24 | 25 | 28 | 27 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 28 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Backdoor surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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