Surf Forecasts:
How big are the waves at China Walls today (21 Jul):
- Afternoon surf: Afternoon surf (21 Jul, local time) - 2.5ft (0.8m), 16s period with S swell.
- Evening surf: Evening surf (21 Jul, local time) - 2ft (0.6m), 16s period with S swell.
The current surf forecast for China Walls at 12AM is: 0.7m 15s primary swell from a South direction and 0.6m 13s secondary swell from a South direction (forecast issued at 07:00pm July 20). An open ocean swell of 1.3m 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 (21 Jul) | - | - |
| Afternoon (21 Jul) | 2.5ft (0.8m) | 16s |
| Evening (21 Jul) | 2ft (0.6m) | 16s |
Table - waves today at China Walls. (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 Wed morning). 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) | S 16 | S 16 | S 15 | S 15 | S 15 | S 15 | S 14 | S 14 | S 14 | S 14 | S 13 | S 13 | S 13 | S 24 | SSW 24 | SSW 24 | SSW 23 | SSW 22 | SSW 22 |
Wave Graph  | |||||||||||||||||||
 kJ | 321 | 177 | 163 | 339 | 339 | 267 | 329 | 325 | 311 | 289 | 281 | 277 | 273 | 289 | 317 | 314 | 426 | 387 | 485 |
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 | 7:13PM0.37m | 10:08AM0.51m | 7:46PM0.29m | 11:08AM0.55m | 8:50PM0.23m | ||||||||||||||
Low Tide | 2:57PM0.28m | 2:33AM0.04m | 5:25PM0.28m | 3:12AM0.05m | 7:38PM0.23m | ||||||||||||||
 |  | |  | |  | | | | | | | |  | | | | |  | |
 | — | — | — | — | 5:58 | — | — | — | — | — | — | — | 6:00 | — | — | — | — | — | — |
 | 7:14 | — | — | — | — | — | — | — | 7:14 | — | — | — | — | — | — | — | 7:14 | — | — |
mm | — | — | — | 1 | 1 | 1 | — | — | — | — | 1 | 1 | 1 | — | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 24 | 24 | 25 | 24 | 24 | 25 |
Feels °C | 23 | 24 | 24 | 26 | 25 | 25 | 27 | 25 | 26 | 25 | 26 | 26 | 24 | 21 | 20 | 22 | 21 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | S 16 | S 16 | S 13 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | NE 7 | S 14 | S 14 | S 13 | S 13 | S 13 | S 13 | S 13 | E 12 | E 11 | S 13 | S 13 |
| kJ | 321 | 177 | 121 | 162 | 158 | 158 | 136 | 75 | 311 | 289 | 281 | 277 | 273 | 273 | 215 | 134 | 123 | 212 | 160 |
Swell 2 Height (m) Direction Period (s) | SW 18 | S 13 | S 15 | S 15 | S 15 | S 15 | S 14 | S 14 | SW 16 | SSW 16 | E 13 | E 13 | E 12 | E 12 | E 12 | S 13 | S 10 | E 12 | SSW 22 |
| kJ | 81 | 121 | 163 | 339 | 339 | 267 | 329 | 325 | 67 | 97 | 85 | 121 | 107 | 103 | 138 | 126 | 78 | 169 | 485 |
Swell 3 Height (m) Direction Period (s) | W 12 | SW 18 | SW 17 | SW 16 | SW 16 | SW 17 | SW 17 | E 7 | E 11 | E 14 | SW 15 | SW 15 | SSW 26 | S 24 | SSW 24 | SSW 24 | SSW 23 | SSW 22 | SW 18 |
| kJ | 11 | 78 | 71 | 69 | 69 | 70 | 72 | 46 | 39 | 58 | 60 | 60 | 217 | 289 | 317 | 314 | 426 | 387 | 150 |
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 6 | ENE 6 | ENE 6 |
| kJ | 207 | 193 | 183 | — | — | — | — | — | 136 | 136 | 158 | 153 | 153 | 168 | 187 | 166 | 145 | 123 | 159 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 45 | 16 | 12 | 12 | 12 | 12 | 12 | 14 | 43 | 12 | 43 | 12 | 43 | 44 | 44 | 43 | 46 | 43 | 43 |
Best forecast wave conditions in Oahu | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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