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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 am Friday 20 Mar 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
24.3° C
(Which is normal for this time of year)How big are the waves at Backdoor today?
The current surf forecast for Backdoor at 2PM is: 1.2m 12s primary swell from a North direction and 0.7m 5s secondary swell from a Southwest direction (forecast issued at 07:00am March 20). An open ocean swell of 0.5m 7s 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 Mar) | 3.5ft (1.0m) | 10s |
| Afternoon (20 Mar) | 4.5ft (1.3m) | 12s |
| Evening (20 Mar) | 5ft (1.5m) | 11s |
Table - waves today at Backdoor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 20 | Saturday 21 | Sunday 22 | Mon 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 | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 10 | 12 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 12 | 11 | 11 | 11 | 11 | 10 | 15 | 15 | 14 | 14 | 14 | 14 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 242 | 196 | 200 | 393 | 431 | 457 | 577 | 556 | 551 | 598 | 693 | 1187 | 1365 | 1208 | 990 | 850 | 679 | 348 | 372 | 362 | 357 | 347 | 264 | 225 |
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 | cross- off | cross | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross | cross- off | cross- off | glass |
High Tide / height (m) | 2:53AM 0.58 | 4:10PM 0.67 | 3:07AM 0.52 | 5:01PM 0.68 | 3:12AM 0.47 | 6:03PM 0.68 | ||||||||||||||||||
Low Tide / height (m) | 9:18AM 0.09 | 10:09PM 0.32 | 9:42AM 0.07 | 11:10PM 0.39 | 10:09AM 0.06 | 12:59AM 0.44 | ||||||||||||||||||
Friday 20 | Saturday 21 | Sunday 22 | Mon 23 | |||||||||||||||||||||
| Sunrise | - | 6:35 | - | - | - | - | - | - | - | 6:35 | - | - | - | - | - | - | - | 6:33 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:43 | - | - | - | - | - | - | - | 6:43 | - | - | - | - | - | - | - | 6:43 | - | - | - |
 |  | | | | | | | |  | | | | | | | | | | | | | | | |
Rain (mm) | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 1 | 2 | - | 1 | 2 | 4 | 2 | 1 | 1 | 1 | 2 | 1 | 3 | 3 | 2 | 1 | 1 |
| Temp. °C | 23 | 24 | 25 | 26 | 25 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 24 | 24 | 23 | 23 | 23 | 24 | 24 | 24 | 23 | 23 | 23 |
| Feels °C (?) | 25 | 25 | 25 | 26 | 25 | 25 | 26 | 26 | 26 | 27 | 25 | 27 | 26 | 26 | 25 | 24 | 24 | 23 | 25 | 24 | 25 | 25 | 25 | 26 |
- 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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