Surf Forecasts:
How big are the waves at China Walls today (31 Jul):
- Morning surf: Morning surf (31 Jul, local time) - 5.5ft (1.7m), 8s period with E swell.
- Afternoon surf: Afternoon surf (31 Jul, local time) - 2.5ft (0.8m), 16s period with E swell.
- Evening surf: Evening surf (31 Jul, local time) - 8ft (2.5m), 8s period with E swell.
The current surf forecast for China Walls at 3AM is: 0.6m 16s primary swell from a Southwest direction and 0.7m 13s secondary swell from a South direction (forecast issued at 07:00pm July 30). An open ocean swell of 1.5m 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 (31 Jul) | 5.5ft (1.7m) | 8s |
| Afternoon (31 Jul) | 2.5ft (0.8m) | 16s |
| Evening (31 Jul) | 8ft (2.5m) | 8s |
Table - waves today at China Walls. (Swell directed towards the surf break)
Short Range ForecastSome drizzle, heaviest during Thu night. Warm (max 27°C on Thu night, min 25°C on Fri afternoon). Winds increasing (moderate winds from the ENE on Thu night, strong winds from the ENE by Fri night). | |||||||||||||||||||
Thu 30 | Friday 31 | Saturday 1 | |||||||||||||||||
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) | SSW 18 | S 13 | S 13 | SSW 16 | E 16 | E 7 | SW 16 | E 16 | E 16 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 14 | E 14 | E 14 | E 14 |
Wave Graph  | |||||||||||||||||||
 kJ | 207 | 168 | 168 | 177 | 208 | 320 | 206 | 231 | 301 | 653 | 1049 | 1130 | 1220 | 1220 | 1220 | 196 | 196 | 257 | 260 |
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 | 3:57PM0.68m | 4:08AM0.30m | 4:25PM0.65m | 4:55AM0.33m | 4:53PM0.60m | ||||||||||||||
Low Tide | 11:13PM0.07m | 9:38AM0.05m | 11:37PM0.06m | 10:23AM0.11m | |||||||||||||||
 |  |  |  | |  | | | | | |  | | | | | | | | |
 | — | — | — | — | 6:03 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — |
 | 7:09 | — | — | — | — | — | — | — | 7:09 | — | — | — | — | — | — | — | 7:08 | — | — |
mm | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 25 | 25 |
Feels °C | 27 | 28 | 26 | 26 | 25 | 24 | 23 | 20 | 21 | 21 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | ENE 7 | ENE 7 | E 7 | S 13 | S 13 | S 12 | E 16 | E 16 | E 15 | SW 15 | E 15 | SW 15 | SSW 14 | SSW 14 | E 14 | E 14 | E 14 | E 14 |
| kJ | 181 | 199 | 214 | 245 | 163 | 158 | 153 | 231 | 301 | 222 | 223 | 205 | 171 | 138 | 127 | 196 | 196 | 257 | 260 |
Swell 2 Height (m) Direction Period (s) | S 13 | S 13 | S 13 | S 13 | E 16 | E 15 | E 15 | SW 16 | SW 15 | SW 15 | S 12 | SW 15 | SSW 12 | SSW 12 | S 12 | SSW 14 | SSW 14 | SSW 14 | SSW 14 |
| kJ | 171 | 168 | 168 | 166 | 185 | 228 | 159 | 201 | 239 | 229 | 72 | 176 | 46 | 46 | 42 | 123 | 123 | 123 | 125 |
Swell 3 Height (m) Direction Period (s) | SSW 18 | SW 18 | SW 17 | SSW 16 | SW 16 | SW 16 | SW 16 | S 12 | S 12 | S 12 | N 8 | S 12 | N 8 | N 8 | S 15 | S 11 | S 11 | S 11 | S 11 |
| kJ | 207 | 152 | 145 | 177 | 208 | 208 | 206 | 110 | 106 | 73 | 5 | 72 | 5 | 5 | 5 | 39 | 39 | 22 | 22 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | E 7 | E 7 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | — | — | — | — | 285 | 320 | 375 | 416 | 469 | 653 | 1049 | 1130 | 1220 | 1220 | 1220 | 1009 | 871 | 1009 | 1009 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 45 | 43 | 43 | 12 | 43 | 51 | 54 | 54 | 114 | 116 | 116 | 54 | 117 | 60 | 143 | 114 | 116 | 57 | 60 |
Best forecast wave conditions in Oahu | |||||||||||||||||||
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