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Aligator Rock surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 7 pm Tuesday 21 Apr 2026 HSTForecast update in hr min s Forecast update imminent
Aligator Rock surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Aligator Rock sea temperature is
24.5° C
(Which is normal for this time of year)How big are the waves at Aligator Rock today?
The current surf forecast for Aligator Rock at 3AM is: 1.0m 14s primary swell from a North-northeast direction and 0.8m 15s secondary swell from a North-northwest direction (forecast issued at 07:00pm April 21). The wind direction is predicted to be offshore and the swell rating is 3.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (22 Apr) | 4ft (1.2m) | 14s |
| Afternoon (22 Apr) | 4.5ft (1.3m) | 13s |
| Evening (22 Apr) | 4ft (1.2m) | 13s |
Table - waves today at Aligator Rock. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 25°C on Wed morning, min 22°C on Wed night). Wind will be generally light. | ||||||||||||||||||||||||
Tue 21 | Wednesday 22 | Thursday 23 | Fri 24 | |||||||||||||||||||||
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 | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
NNE 8 | NNW 16 | NNE 15 | NNE 14 | NW 14 | NW 14 | NNE 13 | NNE 13 | NW 13 | NW 13 | NNE 12 | NW 13 | NW 12 | NNE 11 | NNE 11 | NNE 11 | NNE 10 | NNE 10 | NNE 10 | NNE 10 | NE 10 | NNE 9 | NNE 7 | NE 9 | |
109 | 226 | 291 | 437 | 536 | 581 | 606 | 587 | 509 | 494 | 399 | 364 | 347 | 291 | 334 | 214 | 194 | 186 | 281 | 296 | 376 | 370 | 250 | 323 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | off | off | off | off | 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 | cross-off | |
High Tide | 7:03PM0.49m | 7:22AM0.07m | 8:12PM0.46m | 9:22AM0.09m | 9:21PM0.44m | 10:49AM0.15m | ||||||||||||||||||
Low Tide | 2:15AM0.02m | 10:52AM0.00m | 3:20AM0.01m | 12:21PM0.05m | 4:05AM-0.01m | |||||||||||||||||||
 |  | | | |  | | | | | | | |  | | | | | |  |  | | | | |
 | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — | — | 6:05 | — | — | — |
 | 6:53 | — | — | — | — | — | — | — | 6:53 | — | — | — | — | — | — | — | 6:53 | — | — | — | — | — | — | 6:54 |
1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 25 | 24 | 24 | 23 | 23 | 23 | 25 | 25 | 25 | 23 | 23 | 23 | 22 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 23 | 23 | 24 |
27 | 26 | 26 | 25 | 25 | 25 | 27 | 26 | 26 | 24 | 24 | 24 | 23 | 23 | 22 | 22 | 23 | 21 | 21 | 21 | 21 | 21 | 21 | 23 | |
Swell 1 Height (m) Direction Period (s) | NNE 8 | NNE 8 | NNE 8 | NNE 14 | NW 14 | NW 14 | NNE 13 | NNE 13 | NNE 12 | NNE 12 | NNE 12 | NNE 12 | NNE 11 | NNE 11 | NNE 11 | NNE 11 | NNE 10 | NNE 10 | NNW 12 | NNW 12 | W 14 | W 13 | W 13 | W 13 |
 kJ | 109 | 114 | 84 | 437 | 536 | 581 | 606 | 587 | 433 | 412 | 399 | 330 | 302 | 291 | 334 | 214 | 194 | 186 | 121 | 90 | 101 | 89 | 89 | 87 |
Swell 2 Height (m) Direction Period (s) | NW 13 | NNW 16 | NNE 15 | NNW 15 | NNE 14 | NNE 13 | NW 14 | NW 13 | NW 13 | NW 13 | NW 13 | NW 13 | NW 12 | NNW 12 | NNW 12 | NNW 12 | NNW 12 | NW 12 | W 15 | W 15 | NNW 11 | NW 11 | NNW 11 | NNW 11 |
| kJ | 87 | 226 | 291 | 279 | 487 | 440 | 532 | 517 | 509 | 494 | 382 | 364 | 347 | 260 | 251 | 180 | 180 | 142 | 109 | 109 | 84 | 60 | 47 | 51 |
Swell 3 Height (m) Direction Period (s) | E 8 | W 15 | NW 15 | NW 12 | NNE 8 | W 14 | W 14 | W 14 | W 13 | W 13 | W 13 | W 13 | W 13 | W 13 | W 13 | W 13 | W 12 | W 15 | W 12 | W 12 | ESE 8 | ESE 8 | ESE 8 | ESE 8 |
| kJ | 29 | 153 | 229 | 146 | 58 | 144 | 191 | 131 | 127 | 125 | 123 | 123 | 121 | 82 | 82 | 78 | 75 | 155 | 44 | 44 | 11 | 11 | 11 | 11 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | E 7 | — | E 7 | E 8 | ENE 4 | E 8 | E 8 | NE 4 | NE 4 | NE 4 | NNE 10 | NNE 10 | NE 10 | NNE 9 | NNE 7 | NE 9 |
| kJ | — | — | — | — | — | — | — | — | 39 | — | 39 | 40 | 8 | 41 | 28 | 17 | 19 | 19 | 281 | 296 | 376 | 370 | 250 | 323 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 20 | 23 | 23 | 31 | 23 | 20 | 23 | 22 | 20 | 20 | 23 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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