Surf Forecasts:
How big are the waves at Big Lefts today (20 Aug):
- Afternoon surf: Afternoon surf (20 Aug, local time) - 3.5ft (1.1m), 8s period with ENE swell.
- Evening surf: Evening surf (20 Aug, local time) - 4ft (1.2m), 8s period with ENE swell.
The current surf forecast for Big Lefts at 12AM is: 1.2m 8s primary swell from a East-northeast direction and 0.4m 12s secondary swell from a South direction, 0.4m 16s secondary swell from a South-southwest direction (forecast issued at 07:00pm August 19). The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Aug) | - | - |
| Afternoon (20 Aug) | 3.5ft (1.1m) | 8s |
| Evening (20 Aug) | 4ft (1.2m) | 8s |
Table - waves today at Big Lefts. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 27°C on Thu afternoon, min 25°C on Wed night). Winds increasing (calm on Fri afternoon, strong winds from the ENE by Sat afternoon). | |||||||||||||||||||
Wed 19 | Thursday 20 | Friday 21 | |||||||||||||||||
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) | ENE 8 | ENE 8 | ENE 8 | ENE 7 | SW 17 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SW 16 | SW 17 | SW 17 | SW 17 | SW 17 | SW 16 | SW 16 | SSW 16 |
Wave Graph  | |||||||||||||||||||
 kJ | 188 | 188 | 179 | 153 | 142 | 204 | 207 | 207 | 200 | 184 | 177 | 274 | 288 | 295 | 291 | 284 | 264 | 258 | 322 |
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-on | cross-on | glassy | cross-off | cross-off |
High Tide | 11:25AM0.56m | 10:11PM0.21m | 12:25PM0.59m | ||||||||||||||||
Low Tide | 2:47AM0.12m | 8:27PM0.20m | 3:53AM0.12m | 8:41PM0.17m | |||||||||||||||
 |  | |  | |  | | | | | | | | | | | | | | |
 | — | — | — | — | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — |
 | 6:58 | — | — | — | — | — | — | — | 6:57 | — | — | — | — | — | — | — | 6:57 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 27 | 27 | 26 | 26 | 25 | 25 | 25 | 27 | 27 | 27 | 26 | 26 |
Feels °C | 25 | 25 | 25 | 26 | 27 | 27 | 29 | 30 | 30 | 29 | 30 | 29 | 29 | 29 | 31 | 30 | 31 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 12 | S 12 | ENE 7 | E 8 | E 8 | E 8 | NE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | SW 17 | SW 17 | NE 7 | ENE 7 | ENE 7 | ENE 7 |
| kJ | 45 | 45 | 45 | 153 | 97 | 72 | 54 | 57 | 131 | 131 | 111 | 108 | 90 | 295 | 291 | 55 | 48 | 53 | 81 |
Swell 2 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SW 16 | SW 16 | NE 6 | NE 6 | NE 6 | E 8 | SSW 17 | SSW 17 | SSW 16 | SW 16 | SW 17 | ENE 7 | NNE 7 | SW 17 | SW 16 | SW 16 | SSW 16 |
| kJ | 100 | 103 | 66 | 129 | 39 | 43 | 43 | 55 | 200 | 184 | 177 | 274 | 288 | 32 | 31 | 284 | 264 | 258 | 322 |
Swell 3 Height (m) Direction Period (s) | SW 19 | W 11 | SW 19 | S 12 | SW 17 | SSW 18 | SSW 18 | SSW 18 | W 11 | W 10 | W 10 | W 9 | W 9 | NNE 7 | W 11 | W 10 | NNE 7 | W 10 | W 10 |
| kJ | 92 | 22 | 59 | 45 | 142 | 204 | 207 | 207 | 37 | 32 | 30 | 27 | 27 | 29 | 57 | 54 | 26 | 49 | 31 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | NNE 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 188 | 188 | 179 | 51 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 29 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 |
Best forecast wave conditions in Oahu | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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