Surf Forecasts:
How big are the waves at China Walls today (20 Jul):
- Afternoon surf: Afternoon surf (20 Jul, local time) - 1.5ft (0.4m), 19s period with S swell.
- Evening surf: Evening surf (20 Jul, local time) - 1.5ft (0.4m), 18s period with S swell.
The current surf forecast for China Walls at 12AM is: 0.5m 18s primary swell from a South direction and 0.4m 12s secondary swell from a South-southwest direction (forecast issued at 07:00pm July 19). An open ocean swell of 1.5m 8s 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) | 1.5ft (0.4m) | 19s |
| Evening (20 Jul) | 1.5ft (0.4m) | 18s |
Table - waves today at China Walls. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 4mm), mostly falling on Tue morning. Warm (max 26°C on Mon morning, min 24°C on Wed morning). Mainly fresh winds. | |||||||||||||||||||
Sun 19 | Monday 20 | Tuesday 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) | S 18 | S 18 | S 18 | S 18 | S 17 | S 16 | S 14 | S 16 | S 16 | S 16 | S 15 | S 15 | S 15 | S 15 | S 14 | S 14 | S 14 | S 14 | S 13 |
Wave Graph  | |||||||||||||||||||
 kJ | 106 | 101 | 155 | 97 | 149 | 195 | 142 | 325 | 321 | 177 | 163 | 339 | 339 | 339 | 329 | 325 | 307 | 289 | 281 |
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 | 6:42PM0.45m | 8:59AM0.45m | 7:13PM0.37m | 10:08AM0.51m | 7:46PM0.29m | ||||||||||||||
Low Tide | 1:58AM0.03m | 2:57PM0.28m | 2:33AM0.04m | 5:25PM0.28m | |||||||||||||||
 |  | | | | | | | | | |  | |  |  | | | |  | |
 | — | — | — | — | 5:58 | — | — | — | — | — | — | — | 5:58 | — | — | — | — | — | — |
 | 7:14 | — | — | — | — | — | — | — | 7:14 | — | — | — | — | — | — | — | 7:14 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | — | 1 |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 25 | 25 | 25 |
Feels °C | 23 | 23 | 23 | 24 | 24 | 25 | 25 | 24 | 24 | 23 | 23 | 24 | 24 | 24 | 25 | 24 | 23 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 13 | SSW 12 | SSW 12 | NNE 7 | NNE 7 | S 14 | S 16 | S 16 | S 16 | S 13 | S 15 | S 15 | S 15 | S 14 | ENE 7 | S 14 | S 14 | S 13 |
| kJ | 73 | 85 | 44 | 44 | 31 | 43 | 142 | 325 | 321 | 177 | 121 | 339 | 339 | 339 | 329 | 153 | 307 | 289 | 281 |
Swell 2 Height (m) Direction Period (s) | S 18 | S 18 | S 18 | S 18 | S 17 | S 16 | S 16 | SW 18 | SW 18 | S 13 | S 15 | SW 16 | SW 16 | SW 17 | SW 17 | S 14 | SW 16 | SSW 16 | E 13 |
| kJ | 106 | 101 | 155 | 97 | 149 | 195 | 135 | 82 | 81 | 121 | 163 | 69 | 69 | 70 | 72 | 325 | 67 | 97 | 85 |
Swell 3 Height (m) Direction Period (s) | W 12 | NNE 8 | NNE 8 | NE 8 | SSW 12 | SSW 12 | SW 18 | W 12 | W 12 | SW 18 | SW 17 | E 12 | E 12 | E 12 | E 12 | SW 17 | E 11 | E 14 | SW 15 |
| kJ | 25 | 13 | 13 | 17 | 55 | 45 | 83 | 11 | 11 | 78 | 71 | 12 | 12 | 25 | 25 | 71 | 40 | 58 | 60 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 8 | E 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | — | ENE 7 | ENE 7 | ENE 7 |
| kJ | 291 | 232 | 243 | 212 | 207 | 145 | 199 | 207 | 207 | 202 | 222 | 191 | 186 | 176 | 176 | — | 153 | 186 | 210 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 116 | 12 | 12 | 12 | 12 | 12 | 12 | 43 | 43 | 43 | 43 | 12 | 12 | 43 | 43 | 43 | 43 | 43 | 43 |
Best forecast wave conditions in Oahu | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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