Surf Forecasts:
How big are the waves at Backdoor today (20 Jul):
- Afternoon surf: Afternoon surf (20 Jul, local time) - 0.5ft (0.2m), 12s period with W swell.
- Evening surf: Evening surf (20 Jul, local time) - 0.5ft (0.2m), 11s period with W swell.
The current surf forecast for Backdoor at 11PM is: 0.2m 11s primary swell from a West direction (forecast issued at 07:00pm July 20). An open ocean swell of 0.2m 17s is not directed at the surf break, a second open ocean swell of 0.2m 10s is not directed at the surf break, a second open ocean swell of 1.5m 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 (20 Jul) | - | - |
| Afternoon (20 Jul) | 0.5ft (0.2m) | 12s |
| Evening (20 Jul) | 0.5ft (0.2m) | 11s |
Table - waves today at Backdoor. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 6mm), mostly falling on Mon night. Warm (max 26°C on Tue morning, min 24°C on Mon night). Mainly fresh winds. | |||||||||||||||||||
Mon 20 | Tuesday 21 | Wednesday 22 | |||||||||||||||||
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) | W 12 | W 12 | W 11 | SW 16 | SW 16 | 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 12 | ENE 6 |
Wave Graph  | |||||||||||||||||||
 kJ | 11 | 10 | 10 | 42 | 42 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
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 |
High Tide | 11:07AM0.54m | 12:06PM0.60m | |||||||||||||||||
Low Tide | 1:51AM0.18m | 2:33AM0.17m | |||||||||||||||||
 |  |  | |  | |  | | | | | | | | | | | | | |
 | — | — | — | — | 6:00 | — | — | — | — | — | — | — | 6:01 | — | — | — | — | — | — |
 | 7:15 | — | — | — | — | — | — | — | 7:15 | — | — | — | — | — | — | — | 7:15 | — | — |
mm | — | — | — | — | 1 | — | 1 | — | — | — | — | 1 | 1 | 1 | — | — | — | — | — |
Temp °C | 26 | 25 | 25 | 24 | 24 | 25 | 26 | 26 | 26 | 25 | 25 | 24 | 24 | 24 | 25 | 25 | 25 | 24 | 24 |
Feels °C | 25 | 25 | 25 | 24 | 24 | 25 | 26 | 26 | 26 | 25 | 26 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | SSW 18 | SSW 11 | SSW 17 | SW 16 | SW 16 | SW 16 | E 12 | E 12 | E 11 | E 14 | E 13 | E 13 | E 13 | E 12 | E 12 | E 12 | E 12 | E 12 | E 12 |
| kJ | 31 | 11 | 28 | 42 | 42 | 69 | 25 | 24 | 23 | 60 | 87 | 123 | 116 | 105 | 103 | 138 | 132 | 132 | 137 |
Swell 2 Height (m) Direction Period (s) | SSW 11 | SSW 18 | SSW 10 | SSW 11 | E 12 | E 16 | E 15 | E 15 | E 15 | E 11 | SSW 15 | SW 15 | SSW 15 | SW 15 | SW 16 | SW 17 | SSW 23 | SSW 22 | SSW 22 |
| kJ | 11 | 30 | 11 | 11 | 12 | 19 | 40 | 38 | 38 | 22 | 23 | 58 | 45 | 60 | 62 | 77 | 53 | 98 | 92 |
Swell 3 Height (m) Direction Period (s) | W 12 | W 12 | W 11 | E 13 | SSW 11 | E 12 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | E 11 | S 14 | SSW 26 | SSW 24 | SSW 24 | SSW 24 | SSW 17 | SSW 18 | SSW 18 |
| kJ | 11 | 10 | 10 | 12 | 11 | 11 | 27 | 27 | 26 | 24 | 9 | 15 | 64 | 56 | 55 | 54 | 30 | 30 | 30 |
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 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 6 |
| kJ | 193 | 214 | 229 | 191 | 181 | 181 | 200 | 176 | 181 | 181 | 192 | 219 | 247 | 239 | 212 | 181 | 158 | 136 | 146 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 29 | 24 | 26 | 11 | 10 | 11 | 6 | 6 | 11 | 24 | 24 | 24 | 11 | 24 | 24 | 24 | 26 | 24 | 24 |
Best forecast wave conditions in Oahu | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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