Surf Forecasts:
How big are the waves at Ko Olina Resort today (21 Aug):
- Afternoon surf: Afternoon surf (21 Aug, local time) - 2.5ft (0.7m), 16s period with SW swell.
- Evening surf: Evening surf (21 Aug, local time) - 2.5ft (0.8m), 16s period with SSW swell.
The current surf forecast for Ko Olina Resort at 11PM is: 0.9m 16s primary swell from a Southwest direction (forecast issued at 07:00pm August 21). An open ocean swell of 0.6m 7s is not directed at the surf break, a second open ocean swell of 0.8m 7s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 2.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | - | - |
| Afternoon (21 Aug) | 2.5ft (0.7m) | 16s |
| Evening (21 Aug) | 2.5ft (0.8m) | 16s |
Table - waves today at Ko Olina Resort. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 28°C on Sat afternoon, min 25°C on Sat night). Winds increasing (light winds from the ENE on Fri night, fresh winds from the ENE by Sat afternoon). | |||||||||||||||||||
Fri 21 | Saturday 22 | Sunday 23 | |||||||||||||||||
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 16 | SSW 16 | SW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SW 16 | SW 16 | SW 16 | SSW 15 | SW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 |
Wave Graph  | |||||||||||||||||||
 kJ | 326 | 322 | 367 | 322 | 326 | 326 | 326 | 318 | 314 | 248 | 248 | 245 | 209 | 236 | 199 | 193 | 188 | 138 | 136 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off |
High Tide | 11:07PM0.20m | 1:05PM0.61m | 00:41AM0.22m | 1:43PM0.64m | |||||||||||||||
Low Tide | 9:33PM0.20m | 4:33AM0.13m | 9:13PM0.18m | 5:44AM0.11m | 9:21PM0.17m | ||||||||||||||
 |  | | | |  | | | | | | | | | | | | | | |
 | — | — | — | — | 6:13 | — | — | — | — | — | — | — | 6:13 | — | — | — | — | — | — |
 | 6:58 | — | — | — | — | — | — | — | 6:57 | — | — | — | — | — | — | — | 6:55 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 27 | 26 | 26 | 26 | 27 | 28 | 28 | 26 | 26 | 26 | 25 | 26 | 27 | 27 | 27 | 26 | 26 |
Feels °C | 31 | 29 | 28 | 27 | 27 | 25 | 25 | 26 | 25 | 25 | 25 | 25 | 23 | 25 | 24 | 24 | 24 | 24 | 24 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SW 16 | SSW 16 | ENE 6 | ENE 7 | E 7 | SSW 16 | E 7 | SW 16 | SW 16 | WNW 12 | WNW 12 | SW 15 | E 7 | SSW 15 | SSW 15 | SSW 14 | SSW 14 |
| kJ | 326 | 322 | 367 | 322 | 56 | 73 | 78 | 318 | 150 | 248 | 248 | 161 | 150 | 236 | 200 | 193 | 188 | 138 | 136 |
Swell 2 Height (m) Direction Period (s) | W 10 | W 10 | E 7 | ENE 6 | SSW 16 | SSW 16 | SSW 16 | W 10 | SSW 16 | WNW 10 | WNW 10 | SW 16 | SSW 15 | WNW 11 | SSW 15 | WNW 10 | SE 13 | S 13 | S 13 |
| kJ | 73 | 51 | 40 | 44 | 326 | 326 | 326 | 77 | 314 | 83 | 83 | 245 | 209 | 105 | 199 | 62 | 82 | 89 | 87 |
Swell 3 Height (m) Direction Period (s) | N 7 | E 8 | W 10 | W 10 | W 10 | W 10 | W 10 | SSE 15 | WNW 10 | SSE 12 | WNW 12 | S 14 | S 14 | S 14 | WNW 11 | SE 13 | WNW 10 | SE 12 | SSW 15 |
| kJ | 23 | 29 | 71 | 71 | 71 | 75 | 74 | 73 | 86 | 50 | 60 | 106 | 100 | 132 | 65 | 57 | 39 | 47 | 72 |
Wind waves Height (m) Direction Period (s) | — | — | ENE 7 | ENE 7 | ENE 7 | — | E 7 | E 7 | — | E 7 | E 7 | E 7 | E 8 | E 8 | — | E 7 | E 7 | E 7 | E 7 |
| kJ | — | — | 61 | 59 | 70 | — | 117 | 120 | — | 181 | 257 | 269 | 290 | 248 | — | 189 | 202 | 200 | 200 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 10 | 14 | 10 | 11 | 10 | 10 | 10 | 17 | 17 | 22 | 17 | 11 |
Best forecast wave conditions in Oahu | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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