Surf Forecasts:
How big are the waves at Big Lefts today (18 Aug):
- Morning surf: Morning surf (18 Aug, local time) - 4.5ft (1.3m), 7s period with ENE swell.
- Afternoon surf: Afternoon surf (18 Aug, local time) - 4ft (1.2m), 7s period with ENE swell.
- Evening surf: Evening surf (18 Aug, local time) - 4ft (1.2m), 8s period with ENE swell.
The current surf forecast for Big Lefts at 10PM is: 1.2m 8s primary swell from a East-northeast direction and 0.6m 13s secondary swell from a South direction, 0.4m 18s secondary swell from a Southwest direction (forecast issued at 01:00pm August 18). The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Aug) | 4.5ft (1.3m) | 7s |
| Afternoon (18 Aug) | 4ft (1.2m) | 7s |
| Evening (18 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 24°C on Tue night). Winds decreasing (fresh winds from the ENE on Tue afternoon, light winds from the N by Thu night). | |||||||||||||||||||||
Tue 18 | Wednesday 19 | Thursday 20 | |||||||||||||||||||
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) | ENE 7 | ENE 7 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | SW 16 | SW 16 | E 8 | E 8 | E 8 | SW 16 | SW 17 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SSW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 165 | 160 | 119 | 151 | 151 | 155 | 155 | 147 | 129 | 130 | 100 | 103 | 82 | 129 | 142 | 204 | 207 | 207 | 200 | 184 | 177 |
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 | glassy | off |
High Tide | 8:59AM0.51m | 7:16PM0.30m | 10:13AM0.53m | 11:25AM0.56m | 10:11PM0.21m | ||||||||||||||||
Low Tide | 3:56PM0.27m | 2:01AM0.10m | 2:47AM0.12m | 8:27PM0.20m | |||||||||||||||||
 | | |  |  | | |  | | | | | | | | | | | | | | |
 | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — |
 | — | — | 6:59 | — | — | — | — | — | — | — | 6:58 | — | — | — | — | — | — | — | 6:57 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 26 | 25 | 25 | 24 | 24 | 24 | 25 | 26 | 26 | 25 | 25 | 25 | 24 | 25 | 26 | 27 | 27 | 26 | 26 |
Feels °C | 24 | 23 | 24 | 24 | 24 | 23 | 23 | 24 | 25 | 26 | 26 | 26 | 26 | 26 | 25 | 26 | 27 | 29 | 29 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | S 13 | S 13 | E 8 | S 13 | S 13 | S 13 | S 12 | ENE 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 7 |
| kJ | 165 | 119 | 119 | 119 | 119 | 116 | 103 | 147 | 109 | 84 | 84 | 82 | 82 | 80 | 80 | 76 | 55 | 54 | 54 | 54 | 111 |
Swell 2 Height (m) Direction Period (s) | SW 17 | SW 18 | S 13 | SW 18 | SW 18 | SW 18 | W 12 | S 12 | SW 16 | NE 6 | S 12 | S 12 | S 12 | SW 16 | NE 6 | NE 6 | SSW 18 | NE 6 | NE 6 | NE 7 | SSW 16 |
| kJ | 74 | 78 | 119 | 80 | 80 | 79 | 25 | 69 | 129 | 32 | 45 | 45 | 45 | 129 | 39 | 39 | 207 | 32 | 33 | 36 | 177 |
Swell 3 Height (m) Direction Period (s) | E 9 | WSW 6 | SW 18 | W 13 | W 12 | W 12 | SW 18 | SW 16 | S 12 | SW 16 | SSW 16 | SSW 16 | SW 16 | S 12 | SW 17 | SSW 18 | NNE 7 | SSW 18 | SSW 17 | SSW 17 | S 11 |
| kJ | 15 | 4 | 80 | 29 | 26 | 25 | 49 | 67 | 44 | 130 | 100 | 103 | 66 | 45 | 142 | 204 | 30 | 207 | 200 | 184 | 22 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | NE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | — | NE 6 | — | NNE 6 | NNE 6 | NNE 6 | NE 6 | — | — | — | — | NE 7 | — | — |
| kJ | 163 | 160 | 41 | 151 | 151 | 155 | 155 | — | 43 | — | 26 | 26 | 26 | 39 | — | — | — | — | 51 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 29 | 29 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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