Surf Forecasts:
How big are the waves at Chuns Reef today (20 Aug):
- Morning surf: Morning surf (20 Aug, local time) - 2.5ft (0.8m), 8s period with E swell.
- Afternoon surf: Afternoon surf (20 Aug, local time) - 3.5ft (1.1m), 7s period with NE swell.
- Evening surf: Evening surf (20 Aug, local time) - 4.5ft (1.3m), 7s period with ENE swell.
The current surf forecast for Chuns Reef at 6AM is: 0.9m 8s primary swell from a East direction and 0.9m 6s secondary swell from a Northeast direction (forecast issued at 01:00am August 20). The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Aug) | 2.5ft (0.8m) | 8s |
| Afternoon (20 Aug) | 3.5ft (1.1m) | 7s |
| Evening (20 Aug) | 4.5ft (1.3m) | 7s |
Table - waves today at Chuns Reef. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 28°C on Fri afternoon, min 25°C on Thu morning). Winds increasing (light winds from the E on Fri morning, fresh winds from the ENE by Sat night). | ||||||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | ||||||||||||||||||||||
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 | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | NE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | E 7 | E 7 | E 8 | E 7 | E 7 | ENE 7 | ENE 7 | E 6 | E 6 | E 7 | E 7 | E 7 | E 7 | E 7 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 104 | 102 | 80 | 73 | 105 | 160 | 164 | 142 | 89 | 70 | 64 | 68 | 90 | 106 | 97 | 124 | 135 | 151 | 156 | 196 | 236 | 258 | 266 | 297 |
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 | cross | cross-off | cross-off | cross-off | 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 | 10:17AM0.44m | 8:42PM0.16m | 11:18AM0.46m | 10:56PM0.16m | 12:07PM0.48m | |||||||||||||||||||
Low Tide | 00:40AM0.08m | 6:18PM0.16m | 1:46AM0.09m | 6:29PM0.13m | 3:00AM0.08m | 6:49PM0.12m | ||||||||||||||||||
 | |  | | | | | | | | | | |  | | |  | | | | | | | | |
 | — | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:59 | — | — | — | — | — | — | — | 6:58 | — | — | — | — | — | — | — | 6:57 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 27 | 27 | 27 | 26 | 26 | 25 | 25 | 26 | 27 | 28 | 27 | 26 | 26 | 25 | 25 | 26 | 27 | 27 | 26 | 26 | 25 |
Feels °C | 27 | 28 | 28 | 30 | 29 | 29 | 29 | 30 | 29 | 28 | 29 | 30 | 31 | 30 | 29 | 28 | 26 | 27 | 27 | 28 | 27 | 26 | 26 | 24 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | NE 6 | NE 7 | NE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | E 7 | E 7 | NNE 7 | NNE 7 | NNE 7 | SW 16 | SW 16 | SW 16 | SSW 16 | SSW 16 | SSW 16 | W 12 | W 11 | WNW 13 |
| kJ | 104 | 102 | 59 | 73 | 105 | 160 | 164 | 142 | 89 | 70 | 64 | 68 | 41 | 30 | 25 | 124 | 124 | 122 | 98 | 98 | 97 | 72 | 64 | 189 |
Swell 2 Height (m) Direction Period (s) | NE 6 | NE 6 | E 8 | E 8 | E 8 | W 11 | WSW 10 | WSW 10 | NNE 6 | NNE 7 | NNE 7 | NE 7 | W 10 | SW 16 | SSW 16 | W 10 | W 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | SSW 16 | SSW 16 | SW 16 |
| kJ | 58 | 58 | 80 | 72 | 44 | 36 | 33 | 31 | 35 | 41 | 44 | 47 | 33 | 64 | 98 | 33 | 31 | 33 | 34 | 35 | 34 | 95 | 95 | 61 |
Swell 3 Height (m) Direction Period (s) | SW 16 | SW 17 | SW 18 | SW 18 | SW 18 | SW 17 | SW 17 | SW 16 | W 9 | SW 16 | SW 17 | W 11 | SW 16 | W 10 | W 10 | ESE 8 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WNW 12 | WNW 15 | NW 14 | WSW 9 |
| kJ | 67 | 71 | 78 | 79 | 78 | 76 | 70 | 68 | 28 | 133 | 135 | 36 | 68 | 31 | 31 | 14 | 10 | 10 | 10 | 10 | 51 | 22 | 48 | 8 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | E 8 | E 7 | E 7 | ENE 7 | ENE 7 | E 6 | E 6 | E 7 | E 7 | E 7 | E 7 | E 7 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 90 | 106 | 97 | 124 | 135 | 151 | 156 | 196 | 236 | 258 | 266 | 297 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 19 | 19 | 19 | 19 | 19 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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