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China Walls surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 7 am Thursday 21 May 2026 HSTForecast update in hr min s Forecast update imminent
China Walls surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's China Walls sea temperature is
25.8° C
(Which is slightly warmer than usual)How big are the waves at China Walls today?
The current surf forecast for China Walls at 2PM is: 0.4m 16s primary swell from a South-southwest direction and 0.3m 12s secondary swell from a South-southwest direction (forecast issued at 07:00am May 21). An open ocean swell of 3.0m 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 (21 May) | 1.5ft (0.5m) | 16s |
| Afternoon (21 May) | 1.5ft (0.4m) | 16s |
| Evening (21 May) | 1.5ft (0.5m) | 15s |
Table - waves today at China Walls. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 23°C on Thu morning, min 23°C on Thu morning). Mainly strong winds. | ||||||||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
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 | 2 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
S 16 | S 16 | SSW 16 | SSW 16 | S 16 | S 15 | S 15 | S 15 | S 15 | SSW 15 | S 14 | S 18 | S 18 | S 18 | S 17 | S 16 | S 16 | S 16 | S 16 | S 16 | S 15 | S 15 | S 15 | S 15 | |
134 | 132 | 87 | 85 | 127 | 112 | 157 | 110 | 110 | 71 | 107 | 101 | 98 | 97 | 140 | 130 | 129 | 127 | 125 | 174 | 159 | 157 | 155 | 155 | |
Wind (km/h) | ||||||||||||||||||||||||
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 | cross-off | cross-off | |
High Tide | 7:34AM0.14m | 7:39PM0.60m | 9:11AM0.19m | 8:35PM0.54m | 10:30AM0.27m | 9:29PM0.47m | ||||||||||||||||||
Low Tide | 2:51AM0.00m | 12:06PM0.05m | 3:41AM-0.00m | 1:31PM0.12m | 4:22AM-0.01m | 3:15PM0.17m | ||||||||||||||||||
 |  | | | | | | | | |  | | | | | |  | | | | | | | | |
 | 5:50 | — | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — | 5:48 |
 | — | — | — | — | 7:04 | — | — | — | — | — | — | — | 7:04 | — | — | — | — | — | — | — | 7:05 | — | — | 7:05 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 |
17 | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 17 | 17 | 18 | 17 | 17 | 17 | 17 | 18 | 18 | 17 | 17 | 16 | 17 | 17 | 17 | 17 | |
Swell 1 Height (m) Direction Period (s) | S 16 | S 16 | SSW 16 | SSW 16 | S 16 | S 15 | S 15 | S 15 | S 15 | SSW 15 | S 14 | S 14 | SSW 14 | S 14 | S 17 | S 16 | S 16 | S 16 | S 16 | S 16 | S 15 | S 15 | S 15 | S 15 |
 kJ | 134 | 132 | 87 | 85 | 127 | 112 | 157 | 110 | 110 | 71 | 107 | 101 | 62 | 93 | 140 | 130 | 129 | 127 | 125 | 174 | 159 | 157 | 155 | 155 |
Swell 2 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 12 | S 18 | S 18 | S 18 | S 18 | S 18 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | NNW 16 | NNW 15 | NW 15 | NW 14 | NW 14 |
| kJ | 34 | 33 | 60 | 30 | 17 | 17 | 33 | 32 | 30 | 60 | 57 | 98 | 98 | 97 | 60 | 60 | 59 | 58 | 34 | 25 | 44 | 54 | 52 | 46 |
Swell 3 Height (m) Direction Period (s) | NNW 10 | SSE 14 | SSE 13 | SSE 13 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | S 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | NNW 10 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | S 18 | SSE 11 |
| kJ | 10 | 18 | 17 | 17 | 14 | 14 | 14 | 14 | 11 | 29 | 29 | 14 | 14 | 14 | 14 | 14 | 14 | 11 | 14 | 14 | 14 | 13 | 24 | 12 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 1125 | 1125 | 1051 | 1125 | 1173 | 1282 | 1225 | 1150 | 1024 | 977 | 977 | 824 | 829 | 984 | 984 | 979 | 850 | 824 | 897 | 1006 | 931 | 869 | 869 | 748 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 116 | 114 | 116 | 114 | 117 | 248 | 239 | 114 | 60 | 56 | 144 | 143 | 213 | 213 | 60 | 114 | 116 | 116 | 117 | 213 | 117 | 114 | 60 | 51 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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