Surf Forecasts:
How big are the waves at Backdoor today (19 Aug):
- Afternoon surf: Afternoon surf (19 Aug, local time) - 1ft (0.3m), 17s period with SW swell.
- Evening surf: Evening surf (19 Aug, local time) - 1ft (0.3m), 12s period with WNW swell.
The current surf forecast for Backdoor at 12AM is: 0.3m 12s primary swell from a West-northwest direction and 0.2m 6s secondary swell from a West-southwest direction (forecast issued at 07:00pm August 18). An open ocean swell of 1.3m 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 (19 Aug) | - | - |
| Afternoon (19 Aug) | 1ft (0.3m) | 17s |
| Evening (19 Aug) | 1ft (0.3m) | 12s |
Table - waves today at Backdoor. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 27°C on Fri morning, min 24°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Tue 18 | Wednesday 19 | Thursday 20 | |||||||||||||||||
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) | WNW 13 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | NE 7 | SW 16 | WNW 12 | NE 6 | WNW 11 | WNW 11 | NNE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NE 7 | NNE 6 | NNE 7 |
Wave Graph  | |||||||||||||||||||
 kJ | 34 | 30 | 28 | 28 | 28 | 46 | 43 | 27 | 39 | 12 | 12 | 49 | 39 | 39 | 40 | 43 | 44 | 37 | 41 |
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 | cross | cross | cross-off |
High Tide | 10:00AM0.55m | 11:33AM0.60m | |||||||||||||||||
Low Tide | 00:09AM0.17m | 00:51AM0.18m | |||||||||||||||||
 |  | | |  | |  | | | | | | | | | | | | | |
 | — | — | — | — | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — |
 | 7:00 | — | — | — | — | — | — | — | 6:59 | — | — | — | — | — | — | — | 6:59 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 25 | 25 | 24 | 24 | 24 | 25 | 26 | 26 | 25 | 25 | 25 | 24 | 25 | 26 | 26 | 26 | 26 | 25 |
Feels °C | 25 | 25 | 25 | 24 | 24 | 24 | 25 | 27 | 27 | 25 | 26 | 26 | 25 | 27 | 28 | 28 | 28 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | WNW 13 | WNW 12 | WNW 12 | WNW 12 | NNE 7 | NE 7 | NE 6 | SW 16 | NE 6 | WNW 11 | WSW 8 | E 8 | E 8 | E 8 | E 8 | E 8 | NE 7 | E 8 | NNE 7 |
| kJ | 34 | 30 | 28 | 28 | 9 | 46 | 43 | 67 | 39 | 12 | 6 | 102 | 102 | 78 | 74 | 55 | 44 | 54 | 41 |
Swell 2 Height (m) Direction Period (s) | SSW 18 | SSW 18 | WSW 6 | NNE 7 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 11 | WSW 7 | WNW 11 | NNE 6 | NE 6 | NE 6 | NE 6 | NE 6 | E 8 | NNE 6 | ENE 7 |
| kJ | 30 | 31 | 4 | 9 | 28 | 28 | 28 | 27 | 25 | 5 | 12 | 49 | 39 | 39 | 40 | 43 | 55 | 37 | 37 |
Swell 3 Height (m) Direction Period (s) | WSW 6 | WSW 6 | SSW 18 | SSW 18 | WSW 7 | SW 16 | SW 16 | WSW 7 | SSW 16 | SSW 16 | SSW 16 | SW 16 | SW 17 | SW 18 | SW 18 | SW 18 | SW 17 | SW 17 | E 8 |
| kJ | 4 | 4 | 31 | 30 | 4 | 41 | 41 | 5 | 25 | 25 | 25 | 67 | 71 | 78 | 79 | 78 | 76 | 70 | 41 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | E 9 | E 8 | ENE 6 | E 8 | ENE 8 | ENE 8 | — | — | — | — | — | — | — | — |
| kJ | 160 | 156 | 149 | 160 | 151 | 117 | 115 | 113 | 107 | 176 | 172 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 28 | 24 | 24 | 24 | 10 | 2 | 2 | 6 | 2 | 24 | 24 | 6 | 6 | 0 | 0 | 2 | 2 | 13 | 0 |
Best forecast wave conditions in Oahu | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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