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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 Friday 22 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
25.5° C
(Which is normal for this time of year)How big are the waves at Backdoor today?
The current surf forecast for Backdoor at 10PM is: 0.5m 11s primary swell from a Northwest direction (forecast issued at 01:00pm May 22). An open ocean swell of 0.2m 14s is not directed at the surf break, a second open ocean swell of 2.5m 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 (22 May) | 1.5ft (0.4m) | 10s |
| Afternoon (22 May) | 1.5ft (0.5m) | 11s |
| Evening (22 May) | 1.5ft (0.5m) | 11s |
Table - waves today at Backdoor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 2mm), mostly falling on Sat night. Warm (max 24°C on Fri afternoon, min 22°C on Sat night). Mainly strong winds. | ||||||||||||||||||||||||
Fri 22 | Saturday 23 | Sunday 24 | Mon 25 | |||||||||||||||||||||
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 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 10 | NW 17 | NNW 16 | NNW 16 | NNW 15 | NW 14 | NW 14 | NW 13 | NNW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | |
40 | 56 | 56 | 57 | 57 | 56 | 53 | 74 | 102 | 162 | 191 | 211 | 191 | 180 | 219 | 234 | 216 | 209 | 169 | 142 | 135 | 101 | 97 | 97 | |
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 | 8:31PM0.66m | 10:39AM0.34m | 9:15PM0.61m | 11:49AM0.44m | 9:52PM0.56m | |||||||||||||||||||
Low Tide | 11:43AM0.23m | 4:46AM0.23m | 1:28PM0.33m | 4:59AM0.20m | 3:49PM0.39m | 5:16AM0.16m | ||||||||||||||||||
 | | |  | | |  | |  | | |  | | | |  | | | | | | | | | |
 | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — | — | 5:50 | — |
 | — | — | 7:06 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | 7:07 |
— | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | 1 | — | — | |
Temp °C | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 23 | 23 | 23 | 23 | 22 | 23 | 24 | 24 | 24 | 23 | 22 | 22 | 23 | 23 |
20 | 20 | 18 | 19 | 18 | 19 | 18 | 18 | 17 | 19 | 18 | 19 | 18 | 19 | 19 | 19 | 20 | 20 | 20 | 20 | 18 | 18 | 20 | 20 | |
Swell 1 Height (m) Direction Period (s) | NNW 10 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 10 | NW 10 | NNW 16 | NNW 16 | NNW 15 | NW 14 | NW 14 | NW 13 | NNW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 |
 kJ | 40 | 56 | 56 | 57 | 57 | 56 | 53 | 51 | 102 | 162 | 191 | 211 | 191 | 180 | 219 | 234 | 216 | 209 | 169 | 142 | 135 | 101 | 97 | 97 |
Swell 2 Height (m) Direction Period (s) | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | NNW 19 | NNW 18 | NW 17 | NW 10 | NW 10 | NNW 10 | NW 10 | NW 10 | NW 10 | NW 10 | S 14 | S 14 | S 14 | S 13 | S 13 | S 14 | S 13 | S 13 | S 13 |
| kJ | 21 | 20 | 19 | 18 | 18 | 35 | 31 | 74 | 50 | 50 | 39 | 25 | 24 | 24 | 24 | 16 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 3 |
Swell 3 Height (m) Direction Period (s) | S 12 | S 18 | S 18 | S 18 | S 17 | SSW 13 | S 16 | S 16 | SSW 13 | S 16 | S 16 | S 15 | S 15 | S 15 | S 14 | S 11 | S 16 | S 16 | S 16 | S 16 | — | — | S 20 | S 15 |
| kJ | 3 | 6 | 6 | 6 | 6 | 18 | 21 | 20 | 17 | 5 | 19 | 17 | 17 | 17 | 16 | 2 | 21 | 5 | 5 | 5 | — | — | 8 | 4 |
Wind waves Height (m) Direction Period (s) | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 934 | 847 | 899 | 909 | 941 | 941 | 941 | 941 | 1047 | 1031 | 931 | 943 | 973 | 869 | 809 | 848 | 848 | 778 | 778 | 790 | 771 | 723 | 670 | 579 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 167 | 169 | 170 | 166 | 168 | 168 | 165 | 168 | 176 | 167 | 168 | 168 | 165 | 26 | 24 | 26 | 168 | 165 | 165 | 26 | 26 | 26 | 26 | 26 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Ocean Swells (m)- Wind Speed (km/h)
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