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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 Wednesday 13 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
25.2° 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: 0.3m 18s primary swell from a Northwest direction and 0.5m 9s secondary swell from a Northwest direction, 0.4m 9s secondary swell from a North direction (forecast issued at 01:00pm May 13). An open ocean swell of 1.8m 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 (13 May) | 2.5ft (0.7m) | 9s |
| Afternoon (13 May) | 2ft (0.6m) | 9s |
| Evening (13 May) | 1.5ft (0.4m) | 18s |
Table - waves today at Backdoor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 15mm), heaviest on Fri afternoon. Warm (max 25°C on Thu afternoon, min 22°C on Fri night). Winds decreasing (fresh winds from the ENE on Wed afternoon, light winds from the ESE by Fri afternoon). | ||||||||||||||||||||||||
Wed 13 | Thursday 14 | Friday 15 | Sat 16 | |||||||||||||||||||||
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 9 | NNW 9 | NW 18 | NW 18 | NW 17 | NW 16 | NW 16 | NW 15 | NW 15 | NW 15 | NW 14 | NW 14 | NW 13 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | |
73 | 54 | 50 | 80 | 224 | 271 | 376 | 516 | 558 | 773 | 742 | 828 | 651 | 632 | 623 | 527 | 379 | 373 | 278 | 278 | 195 | 147 | 145 | 145 | |
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 | off | cross-off | cross-off | cross-off | |
High Tide | 1:14PM0.65m | 11:43PM0.50m | 1:54PM0.74m | 00:13AM0.46m | 2:36PM0.81m | 00:41AM0.41m | ||||||||||||||||||
Low Tide | 7:11PM0.36m | 6:27AM0.05m | 8:18PM0.36m | 6:55AM-0.00m | 9:24PM0.36m | 7:27AM-0.03m | ||||||||||||||||||
 | | |  | | |  | | |  | | | |  | |  | | | |  | | | | | |
 | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — |
 | — | — | 7:01 | — | — | — | — | — | — | — | 7:02 | — | — | — | — | — | — | — | 7:02 | — | — | — | — | 7:04 |
— | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | 1 | 3 | 4 | 3 | 2 | — | — | — | |
Temp °C | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 24 | 25 | 24 | 24 | 23 | 23 | 23 | 24 | 25 | 25 | 24 | 22 | 22 | 23 | 23 | 24 |
21 | 21 | 21 | 20 | 20 | 21 | 21 | 21 | 22 | 24 | 23 | 24 | 23 | 23 | 23 | 25 | 25 | 26 | 24 | 21 | 21 | 23 | 23 | 24 | |
Swell 1 Height (m) Direction Period (s) | NNW 9 | NNW 9 | NW 9 | N 8 | NW 17 | NW 16 | NW 16 | NW 15 | NW 15 | NW 15 | NW 14 | NW 14 | NW 13 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | ENE 8 | NW 11 | NW 11 |
 kJ | 73 | 54 | 39 | 34 | 224 | 271 | 376 | 516 | 558 | 773 | 742 | 828 | 651 | 632 | 623 | 527 | 379 | 373 | 278 | 278 | 195 | 350 | 145 | 145 |
Swell 2 Height (m) Direction Period (s) | SSW 15 | N 9 | N 9 | NW 9 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 7 | N 6 | NW 11 | SW 14 | SW 16 |
| kJ | 21 | 15 | 26 | 29 | 33 | 22 | 34 | 22 | 33 | 34 | 22 | 22 | 21 | 21 | 20 | 12 | 11 | 21 | 46 | 33 | 22 | 147 | 29 | 63 |
Swell 3 Height (m) Direction Period (s) | N 10 | SSW 15 | NW 18 | NW 18 | NW 9 | NW 9 | NW 9 | NW 9 | NW 11 | SSW 14 | SSW 14 | SSW 17 | SSW 14 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SSW 16 | SSW 16 | NNW 14 | NNW 13 |
| kJ | 2 | 21 | 50 | 80 | 28 | 27 | 20 | 12 | 60 | 19 | 18 | 30 | 18 | 69 | 67 | 65 | 64 | 64 | 64 | 64 | 25 | 25 | 19 | 35 |
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 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | — | ENE 8 | ENE 8 |
| kJ | 268 | 261 | 268 | 308 | 327 | 371 | 345 | 319 | 310 | 278 | 286 | 261 | 265 | 300 | 279 | 272 | 308 | 308 | 307 | 314 | 295 | — | 361 | 392 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 24 | 168 | 26 | 24 | 24 | 24 | 2 | 5 | 2 | 2 | 24 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 2 | 2 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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