Surf Forecasts:
How big are the waves at Ewa Beach Park today (21 Sep):
- Morning surf: Morning surf (21 Sep, local time) - 5.5ft (1.7m), 8s period with E swell.
- Afternoon surf: Afternoon surf (21 Sep, local time) - 3ft (0.9m), 14s period with SSW swell.
- Evening surf: Evening surf (21 Sep, local time) - 3ft (0.9m), 13s period with SSW swell.
The current surf forecast for Ewa Beach Park at 5PM is: 1.5m 8s primary swell from a East direction and 0.9m 14s secondary swell from a South-southwest direction (forecast issued at 01:00pm September 21). An open ocean swell of 0.2m 11s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Sep) | 5.5ft (1.7m) | 8s |
| Afternoon (21 Sep) | 3ft (0.9m) | 14s |
| Evening (21 Sep) | 3ft (0.9m) | 13s |
Table - waves today at Ewa Beach Park. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 28°C on Tue morning, min 26°C on Mon night). Mainly fresh winds. | |||||||||||||||||||||
Mon 21 | Tuesday 22 | Wednesday 23 | |||||||||||||||||||
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 | SSW 14 | SSW 14 | SSW 13 | ENE 8 | SSW 13 | SSW 13 | ENE 8 | SSW 13 | E 8 | E 8 | E 8 | E 9 | E 9 | E 10 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 331 | 313 | 317 | 295 | 284 | 239 | 234 | 330 | 218 | 234 | 234 | 393 | 328 | 588 | 655 | 474 | 480 | 529 | 470 | 449 | 380 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-off | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-off |
High Tide | 12:56PM0.63m | 1:19AM0.32m | 1:30PM0.65m | 1:53AM0.39m | 2:00PM0.65m | ||||||||||||||||
Low Tide | 8:13PM0.16m | 6:26AM0.16m | 8:26PM0.14m | 7:16AM0.14m | 8:41PM0.12m | ||||||||||||||||
 |  | |  | |  |  |  | | | | | | | | | | | | | | |
 | — | — | — | — | — | — | 6:20 | — | — | — | — | — | — | — | 6:20 | — | — | — | — | — | — |
 | — | — | 6:29 | — | — | — | — | — | — | — | 6:28 | — | — | — | — | — | — | — | 6:27 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 28 | 28 | 27 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 26 | 26 |
Feels °C | 25 | 25 | 26 | 25 | 26 | 27 | 26 | 26 | 28 | 27 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 26 | 25 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | E 8 | E 8 | SSW 13 | S 12 | E 8 | E 8 | S 12 | E 9 | E 9 | S 13 | S 13 | S 12 | S 12 | SSW 16 | SSW 16 |
| kJ | 331 | 313 | 304 | 295 | 232 | 229 | 234 | 200 | 218 | 199 | 234 | 230 | 144 | 408 | 445 | 119 | 117 | 113 | 106 | 166 | 164 |
Swell 2 Height (m) Direction Period (s) | SW 14 | SW 14 | W 11 | W 11 | SW 14 | SW 14 | SSW 13 | SSW 13 | NNW 12 | SW 19 | SSW 12 | S 12 | SW 17 | S 12 | S 12 | SW 17 | SSW 17 | SSW 17 | SSW 16 | S 12 | S 12 |
| kJ | 52 | 51 | 9 | 9 | 49 | 51 | 229 | 225 | 28 | 93 | 155 | 144 | 75 | 108 | 113 | 147 | 197 | 186 | 171 | 106 | 106 |
Swell 3 Height (m) Direction Period (s) | W 11 | W 11 | S 11 | NW 12 | W 11 | W 13 | W 13 | NNW 12 | SW 19 | NNW 12 | SW 19 | SW 17 | NNW 11 | SSW 17 | SW 17 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 |
| kJ | 10 | 9 | 2 | 5 | 10 | 30 | 30 | 14 | 57 | 27 | 92 | 72 | 23 | 117 | 148 | 21 | 20 | 20 | 19 | 19 | 19 |
Wind waves Height (m) Direction Period (s) | E 8 | E 8 | E 8 | ENE 8 | ENE 8 | E 8 | — | ENE 8 | E 8 | E 8 | — | E 8 | E 9 | E 9 | E 10 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 |
| kJ | 310 | 302 | 317 | 284 | 284 | 239 | — | 330 | 200 | 234 | — | 393 | 328 | 588 | 655 | 474 | 480 | 529 | 470 | 449 | 380 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 14 | 14 | 25 | 14 | 14 | 13 | 14 | 14 | 14 | 16 | 22 | 15 | 15 | 14 | 14 | 14 | 14 | 22 | 22 | 14 | 14 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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