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) - 2ft (0.6m), 13s period with S swell.
- Evening surf: Evening surf (18 Aug, local time) - 2ft (0.6m), 13s period with S swell.
The current surf forecast for Big Lefts at 9AM is: 0.7m 13s primary swell from a South direction and 0.4m 16s secondary swell from a Southwest direction, 1.3m 7s secondary swell from a East-northeast direction (forecast issued at 01:00am 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) | 2ft (0.6m) | 13s |
| Evening (18 Aug) | 2ft (0.6m) | 13s |
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). Wind will be generally light. | ||||||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | ||||||||||||||||||||||
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) | ENE 7 | S 13 | ENE 7 | ENE 7 | S 13 | S 13 | S 13 | S 13 | E 9 | ENE 8 | E 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 | 170 | 167 | 165 | 165 | 136 | 140 | 119 | 119 | 117 | 154 | 144 | 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 | cross-off | cross-off | cross-off | glassy | glassy |
High Tide | 8:59AM0.51m | 7:16PM0.30m | 10:13AM0.53m | 11:25AM0.56m | 10:11PM0.21m | |||||||||||||||||||
Low Tide | 1:27AM0.08m | 3:56PM0.27m | 2:01AM0.10m | 2:47AM0.12m | 8:27PM0.20m | |||||||||||||||||||
 | |  | | | |  | | | |  | | | | | | | | | | | | | | |
 | — | 6:09 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:59 | — | — | — | — | — | — | — | 6:58 | — | — | — | — | — | — | — | 6:57 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 25 | 26 | 26 | 25 | 24 | 24 | 24 | 24 | 25 | 26 | 26 | 25 | 25 | 24 | 24 | 24 | 26 | 26 | 27 | 26 | 25 |
Feels °C | 23 | 24 | 23 | 23 | 24 | 25 | 25 | 23 | 23 | 23 | 24 | 25 | 26 | 26 | 26 | 26 | 25 | 26 | 26 | 28 | 28 | 30 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | S 13 | S 13 | S 13 | ENE 7 | ENE 7 | ENE 7 | E 8 | E 8 | E 9 | S 12 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 7 | ENE 7 | NE 7 |
| kJ | 170 | 167 | 165 | 158 | 136 | 140 | 107 | 115 | 117 | 72 | 144 | 86 | 84 | 84 | 84 | 82 | 82 | 80 | 78 | 72 | 71 | 70 | 111 | 82 |
Swell 2 Height (m) Direction Period (s) | E 9 | E 9 | SW 16 | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | W 12 | S 12 | SW 16 | NE 6 | S 12 | S 12 | S 12 | SW 16 | SW 17 | NE 6 | SSW 18 | SSW 18 | NNE 6 | SSW 17 | SSW 16 |
| kJ | 25 | 15 | 69 | 165 | 119 | 119 | 119 | 119 | 116 | 25 | 69 | 129 | 32 | 45 | 45 | 45 | 129 | 142 | 32 | 207 | 207 | 27 | 184 | 177 |
Swell 3 Height (m) Direction Period (s) | SW 6 | SW 6 | E 9 | SW 17 | SW 18 | SW 18 | SW 18 | SW 18 | SW 18 | NE 7 | NNE 7 | S 12 | SW 16 | SSW 16 | SSW 16 | SW 16 | S 12 | S 12 | SSW 18 | NNE 6 | NNE 6 | SSW 17 | S 11 | E 8 |
| kJ | 6 | 6 | 15 | 74 | 78 | 80 | 80 | 80 | 79 | 8 | 18 | 44 | 130 | 100 | 103 | 66 | 45 | 44 | 204 | 27 | 27 | 200 | 21 | 28 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 7 | — | NE 6 | NE 6 | NE 7 | NE 5 | ENE 8 | NE 7 | NE 7 | — | NNE 6 | NNE 6 | NNE 6 | NE 6 | NE 6 | — | — | — | — | — | — |
| kJ | 163 | 139 | 158 | 83 | — | 31 | 30 | 42 | 23 | 154 | 47 | 36 | — | 26 | 26 | 26 | 32 | 34 | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 29 | 0 | 29 | 0 | 29 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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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