Surf Forecasts:
How big are the waves at Keaulanas 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 Keaulanas at 5AM is: 0.8m 17s primary swell from a South-southwest direction (forecast issued at 01:00am August 21). An open ocean swell of 0.7m 7s 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 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 Keaulanas. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 28°C on Sat morning, min 25°C on Sun night). Winds increasing (light winds from the SSW on Fri afternoon, fresh winds from the ENE by Sat afternoon). | ||||||||||||||||||||||||
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) | SW 16 | SSW 17 | SSW 17 | SW 17 | SW 17 | SW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SW 14 | SSW 14 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 278 | 364 | 368 | 291 | 281 | 261 | 322 | 322 | 322 | 322 | 326 | 326 | 322 | 251 | 251 | 248 | 245 | 209 | 204 | 201 | 196 | 191 | 97 | 136 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | cross-off | cross-on | on | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | off | cross-off | off |
High Tide | 12:17PM0.58m | 11:07PM0.20m | 1:05PM0.61m | 00:41AM0.22m | 1:43PM0.64m | |||||||||||||||||||
Low Tide | 3:07AM0.14m | 9:33PM0.20m | 4:33AM0.13m | 9:13PM0.18m | 5:44AM0.11m | 9:21PM0.17m | ||||||||||||||||||
 | |  | |  | |  | | | | | | | | | | | | | | | | | | |
 | — | 6:11 | — | — | — | — | — | — | — | 6:13 | — | — | — | — | — | — | — | 6:13 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:58 | — | — | — | — | — | — | — | 6:57 | — | — | — | — | — | — | — | 6:55 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 28 | 28 | 28 | 26 | 26 | 26 | 26 | 26 | 27 | 28 | 27 | 26 | 26 |
Feels °C | 31 | 30 | 29 | 31 | 31 | 31 | 31 | 29 | 27 | 28 | 27 | 28 | 27 | 27 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SSW 17 | SSW 17 | SW 17 | SW 17 | SW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | WNW 11 | WNW 12 |
| kJ | 278 | 364 | 368 | 291 | 281 | 261 | 322 | 322 | 322 | 322 | 326 | 326 | 322 | 251 | 251 | 248 | 245 | 209 | 204 | 201 | 196 | 191 | 87 | 88 |
Swell 2 Height (m) Direction Period (s) | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 6 | W 10 | W 11 | W 11 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | SSE 13 | SSW 14 |
| kJ | 54 | 41 | 41 | 42 | 42 | 32 | 32 | 37 | 36 | 36 | 35 | 34 | 52 | 57 | 57 | 87 | 125 | 115 | 109 | 113 | 87 | 85 | 98 | 136 |
Swell 3 Height (m) Direction Period (s) | W 9 | W 9 | W 11 | W 11 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | SSE 13 | SSE 12 | S 12 | WNW 10 | ESE 8 | S 14 | S 13 | SSE 13 | SSE 13 | SSE 13 | SW 14 | SSE 13 |
| kJ | 42 | 27 | 57 | 56 | 50 | 49 | 49 | 49 | 50 | 50 | 51 | 51 | 31 | 50 | 46 | 33 | 25 | 101 | 92 | 139 | 70 | 67 | 97 | 57 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | ENE 7 | — | — | — | — | NE 7 | ENE 6 | ENE 7 | ENE 7 | NE 7 | ENE 7 | NE 7 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 |
| kJ | — | — | — | — | — | — | — | 47 | — | — | — | — | 44 | 54 | 56 | 70 | 65 | 88 | 63 | 58 | 56 | 51 | 51 | 46 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 2 | 0 | 9 | 5 | 0 | 0 | 0 | 2 | 0 | 2 | 2 | 5 | 9 | 5 | 6 | 5 | 5 | 5 | 6 | 9 | 9 | 5 | 5 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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