Surf spot
Forecast conditions and map view for Nw reef - shelter island, sai kung in Hong Kong. Open the interactive surf map to inspect wind, waves, and nearby spots.
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| 18:00 | 21:00 | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | |
| Wave height (m) | 0.6 | 0.6 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.6 | 0.5 | 0.6 | 0.6 | 0.5 | 0.6 | 0.5 | 0.5 | 0.5 | 0.4 | 0.5 | 0.4 | 0.4 | 0.3 | 0.3 | 0.4 | 0.4 | 0.4 | 0.4 | 0.6 | 0.5 | 0.5 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.5 | 0.6 | 0.6 | 0.6 | 0.6 | 0.5 | 0.5 | 0.5 |
| Wave direction | S | S | S | S | S | E | E | E | E | E | E | E | E | E | ESE | ESE | ESE | E | E | E | E | E | E | E | S | S | S | SSW | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | SSW | S | S |
| Wave period (s) | 6 | 6 | 5.9 | 5.8 | 5.8 | 4.3 | 4.5 | 4.1 | 4.2 | 4.4 | 4.6 | 4.2 | 4.4 | 4.2 | 4 | 4 | 3.5 | 3.3 | 3.1 | 3.2 | 3.5 | 3.5 | 3.6 | 3.6 | 3.9 | 4.1 | 4 | 3.5 | 4.4 | 4.5 | 3.9 | 4.6 | 4.4 | 4.6 | 4.9 | 4.9 | 4.8 | 5.2 | 5.1 | 5.1 | 5 | 5 | 5 | 5.1 | 5.2 | 5.2 | 5.2 | 5.1 | 5.2 | 4.7 | 4.8 | 4.8 | 5 | 4.5 | 5 | 5.1 |
| Wave energy (kJ) | 24 | 23 | 20 | 18 | 17 | 10 | 9 | 9 | 8 | 9 | 9 | 11 | 10 | 11 | 11 | 8 | 8 | 6 | 5 | 5 | 5 | 6 | 5 | 3 | 4 | 3 | 4 | 4 | 5 | 6 | 9 | 9 | 8 | 15 | 16 | 17 | 18 | 17 | 20 | 17 | 17 | 20 | 20 | 21 | 22 | 19 | 18 | 16 | 14 | 15 | 16 | 16 | 16 | 11 | 14 | 12 |
| Wind speed (km/h) | 9.3 | 10.2 | 9.7 | 12.1 | 16.4 | 10.7 | 12.7 | 12.4 | 14.7 | 17.7 | 21.1 | 19.1 | 18.4 | 22.4 | 22.3 | 18.4 | 13.1 | 15.6 | 16.9 | 22.6 | 19.7 | 13.8 | 6.9 | 5.2 | 5.8 | 9.6 | 13.2 | 21.1 | 20.9 | 20 | 14.3 | 16.6 | 27 | 23.5 | 12.3 | 24.1 | 29.4 | 22.4 | 14.6 | 12.8 | 11.1 | 11.2 | 12.8 | 17.8 | 28.7 | 19.6 | 8.9 | 8 | 11.2 | 8.6 | 5.8 | 6.6 | 2.5 | 5.8 | 9.2 | 10.1 |
| Wind direction | NNECross-on | NECross-on | NNECross-on | ENECross | ENECross | ENECross | ENECross | ENECross | ENECross | ENECross | ENECross | ENECross | ECross-off | ECross-off | ESECross-off | ECross-off | ENECross | ENECross | NECross | ENECross | NECross | SSWCross-off | SOffshore | SSWCross-off | SSEOffshore | SSWCross-off | SSWCross-off | SSWCross-off | SWCross-off | SWCross-off | SWCross-off | SWCross-off | WSWCross | SWCross-off | SWCross-off | SWCross-off | SWCross | SWCross-off | SSWCross-off | SCross-off | SSWCross-off | SSWCross-off | SWCross | SWCross | WSWCross | WSWCross-on | WSWCross | SCross-off | SEOffshore | SSEOffshore | SOffshore | WSWCross | SGlassy | ECross-off | ESECross-off | ESECross-off |