Surf Forecasts:
How big are the waves at Backdoor today (17 Sep):
- Morning surf: Morning surf (17 Sep, local time) - 1.5ft (0.5m), 16s period with SW swell.
- Afternoon surf: Afternoon surf (17 Sep, local time) - 1.5ft (0.5m), 16s period with SW swell.
- Evening surf: Evening surf (17 Sep, local time) - 1.5ft (0.5m), 16s period with SW swell.
The current surf forecast for Backdoor at 8AM is: 0.5m 16s primary swell from a Southwest direction and 0.3m 11s secondary swell from a Southwest direction (forecast issued at 01:00am September 17). An open ocean swell of 2.1m 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 (17 Sep) | 1.5ft (0.5m) | 16s |
| Afternoon (17 Sep) | 1.5ft (0.5m) | 16s |
| Evening (17 Sep) | 1.5ft (0.5m) | 16s |
Table - waves today at Backdoor. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 2mm), mostly falling on Thu afternoon. Warm (max 27°C on Fri morning, min 26°C on Thu morning). Mainly fresh winds. | ||||||||||||||||||||||||
Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||||||||||
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 | 5 PM | 8 PM | 11 PM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | SW 17 | NE 7 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | NW 12 | NW 12 | WNW 11 | WNW 11 | NW 10 | NW 10 | NW 10 | NNE 7 | NW 9 | NW 9 | NW 9 | NW 9 | W 9 | SW 16 | W 8 | NW 10 | N 12 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 145 | 342 | 127 | 125 | 125 | 125 | 124 | 6 | 6 | 12 | 12 | 4 | 4 | 4 | 47 | 3 | 3 | 3 | 3 | 3 | 121 | 1 | 4 | 4 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | 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 | 8:23AM0.57m | 10:24AM0.59m | 11:23AM0.62m | |||||||||||||||||||||
Low Tide | 11:15PM0.18m | 00:18AM0.21m | ||||||||||||||||||||||
 | |  |  |  | |  | | | |  | | | | | | | | | | | | |  | |
 | — | 6:18 | — | — | — | — | — | — | — | 6:18 | — | — | — | — | — | — | — | 6:20 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:32 | — | — | — | — | — | — | — | 6:31 | — | — | — | — | — | — | — | 6:30 | — | — |
mm | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 26 | 26 | 26 |
Feels °C | 26 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 27 | 27 | 26 | 26 | 26 | 26 | 25 | 26 | 26 | 26 | 25 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | E 10 | E 10 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SSW 16 | SSW 17 | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SSW 17 | NNE 7 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SW 16 | SSW 16 | SSW 16 | SSW 16 |
| kJ | 96 | 94 | 127 | 125 | 125 | 125 | 124 | 175 | 202 | 204 | 121 | 202 | 197 | 193 | 47 | 179 | 173 | 171 | 166 | 166 | 121 | 164 | 164 | 164 |
Swell 2 Height (m) Direction Period (s) | SW 17 | SW 16 | SW 11 | WSW 11 | SSW 20 | SSW 20 | SSW 19 | SW 10 | NW 12 | WNW 11 | SW 14 | NW 10 | NW 10 | NW 10 | SSW 17 | NW 9 | NW 9 | NW 9 | NW 9 | NW 8 | S 18 | S 18 | NW 10 | N 12 |
| kJ | 145 | 132 | 19 | 11 | 37 | 37 | 72 | 4 | 6 | 12 | 52 | 4 | 4 | 4 | 184 | 3 | 3 | 3 | 3 | 3 | 6 | 6 | 4 | 3 |
Swell 3 Height (m) Direction Period (s) | SW 11 | SW 11 | NW 10 | SSW 20 | NW 10 | WSW 10 | SW 8 | NW 12 | SW 10 | SW 10 | WNW 11 | W 9 | W 9 | W 9 | NW 9 | W 9 | W 9 | W 9 | W 9 | W 9 | W 8 | W 8 | W 8 | NW 10 |
| kJ | 19 | 19 | 4 | 38 | 4 | 10 | 3 | 6 | 4 | 4 | 12 | 2 | 2 | 2 | 3 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 4 |
Wind waves Height (m) Direction Period (s) | ENE 7 | NE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 |
| kJ | 332 | 342 | 469 | 537 | 531 | 539 | 682 | 603 | 547 | 547 | 472 | 472 | 427 | 461 | 408 | 419 | 430 | 451 | 453 | 501 | 501 | 513 | 476 | 513 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 26 | 26 | 26 | 26 | 29 | 26 | 5 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 2 | 24 | 24 | 24 | 24 | 24 | 5 | 24 | 24 | 24 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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