Using Surf-Forecast’s Historical Surf Data To Find The Cleanest Waves On Earth
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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 Wednesday 21 Jan 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
24.6° C
(Which is normal for this time of year)How big are the waves at Backdoor today?
The current surf forecast for Backdoor at 3AM is: 1.9m 14s primary swell from a Northwest direction (forecast issued at 07:00pm January 21). An open ocean swell of 0.2m 15s is not directed at the surf break, a second open ocean swell of 1.0m 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 (22 Jan) | 7ft (2.1m) | 14s |
| Afternoon (22 Jan) | 6ft (1.9m) | 13s |
| Evening (22 Jan) | 5.5ft (1.7m) | 13s |
Table - waves today at Backdoor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | |||||||||||||||||||||
| 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) (?) | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 12 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1956 | 1387 | 1368 | 1349 | 1319 | 1572 | 1242 | 1326 | 1092 | 888 | 1021 | 795 | 759 | 1240 | 1243 | 1223 | 1111 | 929 | 594 | 458 | 396 | 389 | 238 | 166 |
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 | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | off | off | cross- off |
High Tide / height (m) | 4:53AM 0.71 | 5:00PM 0.41 | 5:10AM 0.66 | 6:18PM 0.44 | 5:22AM 0.60 | |||||||||||||||||||
Low Tide / height (m) | 9:39PM 0.15 | 11:50AM 0.24 | 10:14PM 0.24 | 12:16PM 0.21 | 10:54PM 0.34 | 12:48PM 0.18 | ||||||||||||||||||
Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 7:11 | - | - | - | - | - | - | - | 7:11 | - | - | - | - | - | - | - | 7:11 | - | - |
| Sunset | 6:14 | - | - | - | - | - | - | - | 6:15 | - | - | - | - | - | - | - | 6:15 | - | - | - | - | - | - | - |
 |  | |  | |  | | | | | | | | | | | | | | | | |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 2 |
| Temp. °C | 23 | 23 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 22 | 22 | 22 | 21 | 21 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 21 | 21 |
| Feels °C (?) | 20 | 21 | 20 | 21 | 21 | 21 | 22 | 22 | 22 | 21 | 22 | 21 | 20 | 20 | 22 | 22 | 22 | 22 | 22 | 21 | 22 | 22 | 22 | 22 |
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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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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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