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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 19 May 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
25.3° C
(Which is normal for this time of year)How big are the waves at Backdoor today?
The current surf forecast for Backdoor at 6PM is: 0.6m 11s primary swell from a Northwest direction and 0.3m 13s secondary swell from a Southwest direction (forecast issued at 01:00pm May 19). An open ocean swell of 1.7m 8s 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 May) | 2ft (0.6m) | 11s |
| Afternoon (19 May) | 2ft (0.6m) | 11s |
| Evening (19 May) | 2ft (0.6m) | 11s |
Table - waves today at Backdoor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 25°C on Tue afternoon, min 23°C on Tue night). Mainly strong winds. | ||||||||||||||||||||||||
Tue 19 | Wednesday 20 | Thursday 21 | Fri 22 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
NW 11 | NNW 11 | NW 10 | NW 11 | NW 11 | NW 10 | NW 10 | NNW 10 | NW 10 | NNW 11 | NNW 10 | NNW 11 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NNW 10 | |
104 | 82 | 89 | 92 | 115 | 108 | 104 | 67 | 47 | 65 | 97 | 75 | 63 | 41 | 33 | 37 | 19 | 24 | 24 | 23 | 23 | 25 | 25 | 38 | |
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 | 5:51PM0.81m | 6:46PM0.77m | 7:41PM0.72m | 7:30AM0.27m | ||||||||||||||||||||
Low Tide | 9:21AM-0.00m | 10:03AM0.06m | 10:48AM0.14m | 4:50AM0.26m | ||||||||||||||||||||
 | | |  | | |  | | | | | | | | | | | | | | | | | | |
 | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — | — | 5:50 | — |
 | — | — | 7:05 | — | — | — | — | — | — | — | 7:05 | — | — | — | — | — | — | — | 7:06 | — | — | — | — | 7:06 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 25 | 25 | 24 | 24 | 24 | 23 | 23 | 23 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 23 |
24 | 24 | 22 | 23 | 23 | 21 | 21 | 20 | 22 | 21 | 21 | 20 | 19 | 19 | 19 | 19 | 20 | 20 | 18 | 18 | 18 | 18 | 18 | 19 | |
Swell 1 Height (m) Direction Period (s) | NW 11 | NNW 11 | NW 10 | NW 11 | NW 11 | NW 10 | NW 10 | NNW 10 | NW 10 | NNW 11 | NNW 10 | NNW 11 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NNW 10 |
 kJ | 104 | 82 | 89 | 92 | 115 | 108 | 104 | 67 | 47 | 65 | 97 | 75 | 63 | 41 | 33 | 37 | 19 | 24 | 24 | 23 | 23 | 25 | 25 | 38 |
Swell 2 Height (m) Direction Period (s) | SW 18 | SSW 18 | SW 13 | SSW 16 | SSW 15 | SSW 15 | SW 16 | SW 16 | NNW 11 | SSW 16 | SSW 16 | SSW 13 | NW 9 | NW 9 | WNW 9 | SSW 13 | SSW 13 | SSW 14 | SSW 14 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | S 15 |
| kJ | 79 | 30 | 27 | 24 | 21 | 44 | 64 | 64 | 43 | 50 | 50 | 18 | 13 | 12 | 8 | 16 | 16 | 20 | 20 | 22 | 21 | 21 | 21 | 17 |
Swell 3 Height (m) Direction Period (s) | SW 13 | SW 13 | SSW 18 | SSW 13 | NNW 13 | SW 16 | SW 13 | NNW 12 | SSW 16 | NW 10 | SW 13 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | S 16 | NW 9 | S 16 | S 16 | SW 14 | S 13 | S 13 | S 13 | S 12 |
| kJ | 28 | 27 | 30 | 17 | 17 | 10 | 7 | 28 | 50 | 14 | 7 | 20 | 20 | 17 | 16 | 20 | 3 | 5 | 19 | 8 | 3 | 3 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 8 | E 8 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 8 | ENE 9 |
| kJ | 324 | 324 | 365 | 367 | 397 | 428 | 448 | 565 | 619 | 701 | 748 | 766 | 831 | 871 | 939 | 893 | 979 | 979 | 1003 | 1097 | 1121 | 1098 | 1000 | 953 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 2 | 2 | 24 | 5 | 24 | 24 | 24 | 24 | 24 | 26 | 26 | 26 | 26 | 165 | 166 | 166 | 168 | 166 | 176 | 184 | 169 | 26 | 26 | 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)
FREE! Surf-Forecast.com widget for your website
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