Surf Forecasts:
How big are the waves at Waimanalo today (20 Sep):
- Morning surf: Morning surf (20 Sep, local time) - 6ft (1.8m), 8s period with ENE swell.
- Afternoon surf: Afternoon surf (20 Sep, local time) - 6ft (1.9m), 8s period with ENE swell.
- Evening surf: Evening surf (20 Sep, local time) - 7ft (2.1m), 8s period with E swell.
The current surf forecast for Waimanalo at 8PM is: 2.0m 8s primary swell from a East direction and 0.1m 11s secondary swell from a North direction (forecast issued at 01:00pm September 20). An open ocean swell of 0.4m 15s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Sep) | 6ft (1.8m) | 8s |
| Afternoon (20 Sep) | 6ft (1.9m) | 8s |
| Evening (20 Sep) | 7ft (2.1m) | 8s |
Table - waves today at Waimanalo. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 26°C on Sun afternoon, min 25°C on Sun afternoon). Mainly strong winds. | |||||||||||||||||||||
Sun 20 | Monday 21 | Tuesday 22 | |||||||||||||||||||
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) | ENE 8 | ENE 8 | ENE 8 | E 8 | E 7 | E 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 427 | 473 | 427 | 471 | 478 | 491 | 487 | 426 | 427 | 438 | 441 | 378 | 416 | 384 | 361 | 361 | 359 | 359 | 359 | 403 | 512 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | cross-on |
High Tide | 12:22PM0.57m | 11:21PM0.27m | 12:47PM0.59m | 00:00AM0.32m | 1:08PM0.61m | ||||||||||||||||
Low Tide | 7:51PM0.20m | 4:53AM0.10m | 7:29PM0.19m | 5:39AM0.07m | 7:29PM0.17m | ||||||||||||||||
 | | |  |  | | | | | | | | | | |  | | | | | | |
 | — | — | — | — | — | — | 6:18 | — | — | — | — | — | — | — | 6:18 | — | — | — | — | — | — |
 | — | — | 6:29 | — | — | — | — | — | — | — | 6:28 | — | — | — | — | — | — | — | 6:27 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 25 |
Feels °C | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 24 | 24 | 23 | 23 | 24 | 24 | 26 | 26 | 26 | 25 | 26 | 25 | 24 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | S 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | N 13 | N 12 | N 12 | NNW 12 | NNW 11 | NNW 11 | NNW 11 |
| kJ | 79 | 73 | 74 | 75 | 74 | 71 | 68 | 104 | 67 | 63 | 61 | 59 | 58 | 58 | 87 | 112 | 141 | 145 | 133 | 126 | 123 |
Swell 2 Height (m) Direction Period (s) | E 10 | N 11 | N 11 | N 11 | N 11 | N 10 | NNW 10 | N 10 | N 10 | NNW 10 | N 10 | NNW 10 | N 14 | N 14 | SSW 13 | SSW 13 | SSW 13 | S 13 | SSW 12 | S 12 | S 12 |
| kJ | 18 | 2 | 9 | 2 | 2 | 8 | 11 | 8 | 8 | 9 | 8 | 9 | 16 | 32 | 57 | 33 | 33 | 51 | 30 | 26 | 26 |
Swell 3 Height (m) Direction Period (s) | N 11 | NW 9 | NW 9 | NW 9 | NW 8 | NW 8 | N 8 | NW 8 | NW 8 | NW 10 | NW 10 | N 15 | NNW 9 | NNW 10 | S 16 | S 16 | S 16 | SW 19 | SW 19 | SW 18 | SW 17 |
| kJ | 2 | 3 | 3 | 3 | 3 | 3 | 1 | 3 | 3 | 4 | 4 | 17 | 9 | 10 | 5 | 5 | 5 | 14 | 14 | 12 | 11 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | E 8 | E 7 | E 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 8 |
| kJ | 427 | 473 | 427 | 471 | 478 | 491 | 487 | 426 | 427 | 438 | 441 | 378 | 416 | 384 | 361 | 361 | 359 | 359 | 359 | 403 | 512 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 50 | 52 | 52 | 50 | 50 | 52 | 44 | 44 | 44 | 44 | 52 | 44 | 44 | 18 | 17 | 44 | 44 | 44 | 50 | 44 | 44 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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