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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 1 pm Tuesday 28 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 9PM is: 0.7m 13s primary swell from a Northwest direction and 0.5m 10s secondary swell from a Northwest direction (forecast issued at 01:00pm April 28). An open ocean swell of 1.1m 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 (28 Apr) | 1.5ft (0.4m) | 15s |
| Afternoon (28 Apr) | 2ft (0.6m) | 14s |
| Evening (28 Apr) | 2.5ft (0.7m) | 13s |
Table - waves today at Backdoor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastSome drizzle, heaviest during Wed night. Warm (max 25°C on Tue afternoon, min 22°C on Wed night). Mainly fresh winds. | ||||||||||||||||||||||||
Tue 28 | Wednesday 29 | Thursday 30 | Fri 1 | |||||||||||||||||||||
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 | 5 AM | 8 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
NNW 10 | NW 14 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NNW 14 | NW 12 | NW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NNW 11 | NNW 11 | NNW 13 | NNW 13 | NNW 13 | NNW 12 | NNW 12 | |
74 | 119 | 113 | 171 | 235 | 221 | 248 | 200 | 132 | 134 | 282 | 273 | 301 | 287 | 330 | 319 | 309 | 347 | 341 | 408 | 414 | 402 | 359 | 347 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 1:40PM0.62m | 00:36AM0.52m | 2:11PM0.68m | 00:56AM0.48m | 2:42PM0.72m | 1:13AM0.44m | ||||||||||||||||||
Low Tide | 7:32PM0.33m | 7:05AM0.10m | 8:23PM0.33m | 7:22AM0.08m | 9:10PM0.34m | 7:41AM0.07m | ||||||||||||||||||
 | | |  | |  | | | |  | | | | |  |  | | | | | | | | | |
 | — | — | — | — | — | — | 6:01 | — | — | — | — | — | — | — | 6:01 | — | — | — | — | — | — | — | 6:01 | — |
 | — | — | 6:55 | — | — | — | — | — | — | — | 6:57 | — | — | — | — | — | — | — | 6:57 | — | — | — | — | 6:57 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | |
Temp °C | 24 | 25 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 23 | 23 | 23 | 23 | 22 | 23 | 23 | 24 | 23 | 23 | 23 | 23 | 23 | 23 |
24 | 24 | 23 | 22 | 22 | 21 | 21 | 20 | 20 | 22 | 20 | 21 | 21 | 21 | 19 | 20 | 20 | 21 | 20 | 20 | 20 | 20 | 20 | 20 | |
Swell 1 Height (m) Direction Period (s) | NNW 10 | NNW 10 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NNW 11 | NNW 11 | NNW 13 | NNW 13 | NNW 13 | NNW 12 | NNW 12 |
 kJ | 68 | 65 | 113 | 171 | 235 | 221 | 248 | 200 | 132 | 134 | 282 | 273 | 301 | 287 | 330 | 319 | 309 | 347 | 341 | 408 | 414 | 402 | 359 | 347 |
Swell 2 Height (m) Direction Period (s) | NW 14 | NW 14 | NW 10 | NW 10 | NE 8 | SSW 12 | SSW 12 | NW 14 | NNW 14 | NNW 14 | NE 9 | NE 9 | NE 9 | NE 9 | SW 11 | SW 11 | NNE 11 | NE 8 | S 16 | NE 10 | SSW 16 | SW 15 | SW 15 | SSW 15 |
| kJ | 74 | 119 | 47 | 46 | 17 | 14 | 14 | 52 | 129 | 113 | 14 | 22 | 21 | 21 | 5 | 5 | 12 | 18 | 5 | 16 | 25 | 9 | 9 | 21 |
Swell 3 Height (m) Direction Period (s) | NE 8 | NE 8 | NE 8 | NE 8 | SSW 12 | S 15 | NNE 10 | NNE 10 | NE 10 | NE 10 | SSW 11 | SSW 11 | SW 11 | SW 11 | S 13 | S 12 | SW 11 | S 16 | SW 11 | SSW 16 | S 12 | S 11 | S 11 | NW 20 |
| kJ | 18 | 18 | 17 | 16 | 14 | 4 | 9 | 9 | 15 | 15 | 12 | 12 | 5 | 5 | 3 | 3 | 5 | 5 | 5 | 25 | 3 | 2 | 2 | 15 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 |
| kJ | 118 | 105 | 121 | 132 | 151 | 193 | 181 | 176 | 173 | 168 | 141 | 137 | 106 | 126 | 176 | 249 | 273 | 233 | 265 | 286 | 395 | 431 | 440 | 439 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 2 | 2 | 2 | 24 | 2 | 2 | 2 | 2 | 24 | 30 | 165 | 26 | 2 | 2 | 24 | 24 | 24 | 26 | 26 | 24 | 24 | 24 | 24 | 26 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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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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