Surf Forecasts:
How big are the waves at Ewa Beach Park today (21 Aug):
- Morning surf: Morning surf (21 Aug, local time) - 2.5ft (0.8m), 17s period with SSW swell.
- 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 Ewa Beach Park at 4AM is: 0.8m 17s primary swell from a South-southwest direction and 0.7m 7s secondary swell from a East-northeast direction (forecast issued at 01:00am August 21). The wind direction is predicted to be cross-onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | 2.5ft (0.8m) | 17s |
| Afternoon (21 Aug) | 2.5ft (0.7m) | 16s |
| Evening (21 Aug) | 2.5ft (0.8m) | 16s |
Table - waves today at Ewa Beach Park. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 27°C on Fri morning, min 25°C on Sat night). Winds increasing (calm on Fri afternoon, strong winds from the ENE by Sun morning). | ||||||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||||||||||
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) | SSW 16 | SW 17 | SSW 17 | SSW 17 | SW 17 | SSW 16 | SSW 16 | SW 16 | SW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | E 7 | E 7 | E 7 | SW 15 | E 7 | E 7 | SSW 15 | E 7 | E 6 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 347 | 414 | 368 | 368 | 281 | 326 | 322 | 367 | 367 | 322 | 326 | 326 | 322 | 314 | 310 | 266 | 269 | 242 | 236 | 239 | 226 | 191 | 214 | 213 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-on | on | cross-on | glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 12:12PM0.60m | 11:03PM0.23m | 1:02PM0.64m | 00:38AM0.25m | 1:42PM0.67m | |||||||||||||||||||
Low Tide | 3:11AM0.15m | 9:15PM0.23m | 4:37AM0.15m | 9:01PM0.20m | 5:49AM0.13m | 9:11PM0.18m | ||||||||||||||||||
 | |  |  | | | | | | | | | | | | |  | | | | | | | | |
 | — | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:57 | — | — | — | — | — | — | — | 6:55 | — | — | — | — | — | — | — | 6:55 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 26 | 25 | 25 | 25 | 26 | 27 | 27 | 27 | 25 | 25 |
Feels °C | 30 | 30 | 30 | 30 | 30 | 31 | 31 | 27 | 27 | 28 | 26 | 25 | 25 | 25 | 25 | 23 | 23 | 23 | 24 | 24 | 23 | 24 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SW 17 | SSW 17 | SSW 17 | SW 17 | SSW 16 | SSW 16 | SW 16 | SW 16 | SSW 16 | E 7 | E 7 | E 7 | SSW 16 | SSW 16 | SW 16 | SW 16 | SSW 15 | SW 15 | SW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 |
| kJ | 347 | 414 | 368 | 368 | 281 | 326 | 322 | 367 | 367 | 322 | 74 | 97 | 117 | 314 | 310 | 248 | 245 | 209 | 236 | 232 | 196 | 191 | 138 | 136 |
Swell 2 Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | W 10 | ENE 7 | W 10 | ENE 7 | ENE 7 | SSW 16 | SSW 16 | SSW 16 | WNW 10 | WNW 10 | W 10 | S 14 | S 14 | WNW 11 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 13 |
| kJ | 57 | 55 | 41 | 40 | 40 | 49 | 52 | 69 | 45 | 58 | 326 | 326 | 322 | 85 | 83 | 52 | 106 | 100 | 68 | 137 | 99 | 99 | 98 | 98 |
Swell 3 Height (m) Direction Period (s) | W 9 | W 9 | W 11 | W 11 | W 10 | E 8 | W 10 | S 13 | W 10 | W 10 | W 10 | W 10 | W 10 | S 12 | SSE 12 | S 12 | WNW 10 | WNW 12 | S 13 | WNW 11 | WNW 11 | WNW 11 | NW 11 | NW 11 |
| kJ | 42 | 27 | 37 | 82 | 73 | 29 | 50 | 31 | 50 | 50 | 73 | 74 | 74 | 47 | 50 | 46 | 60 | 52 | 128 | 68 | 68 | 48 | 61 | 61 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | ENE 7 | E 6 | — | ENE 7 | ENE 7 | ENE 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 6 |
| kJ | — | — | — | — | — | — | — | 47 | 47 | — | 64 | 166 | 198 | 139 | 212 | 266 | 269 | 242 | 212 | 239 | 226 | 187 | 214 | 213 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 10 | 14 | 14 | 13 | 15 | 0 | 4 | 14 | 14 | 4 | 12 | 16 | 22 | 23 | 22 | 23 | 22 | 22 | 22 | 23 | 25 | 23 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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