Surf Forecasts:
How big are the waves at Waimanalo today (21 Sep):
- Morning surf: Morning surf (21 Sep, local time) - 6.5ft (2.0m), 8s period with ENE swell.
- Afternoon surf: Afternoon surf (21 Sep, local time) - 6ft (1.9m), 8s period with ENE swell.
- Evening surf: Evening surf (21 Sep, local time) - 6ft (1.8m), 8s period with ENE swell.
The current surf forecast for Waimanalo at 11AM is: 1.9m 8s primary swell from a East-northeast direction and 0.2m 10s secondary swell from a North direction (forecast issued at 07:00am September 21). An open ocean swell of 0.4m 14s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Sep) | 6.5ft (2.0m) | 8s |
| Afternoon (21 Sep) | 6ft (1.9m) | 8s |
| Evening (21 Sep) | 6ft (1.8m) | 8s |
Table - waves today at Waimanalo. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 26°C on Mon morning, min 25°C on Mon morning). Mainly fresh winds. | |||||||||||||||||||||||
Monday 21 | Tuesday 22 | Wednesday 23 | |||||||||||||||||||||
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) | E 8 | 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 9 | E 9 | E 9 | E 10 | E 10 | E 10 | ENE 10 | ENE 9 | ENE 9 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 471 | 449 | 416 | 427 | 419 | 388 | 378 | 365 | 394 | 361 | 370 | 359 | 448 | 539 | 653 | 715 | 780 | 755 | 755 | 755 | 681 | 589 | 626 |
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 | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on |
High Tide | 12:47PM0.59m | 00:00AM0.32m | 1:08PM0.61m | 00:34AM0.37m | 1:26PM0.62m | ||||||||||||||||||
Low Tide | 4:53AM0.10m | 7:29PM0.19m | 5:39AM0.07m | 7:29PM0.17m | 6:17AM0.06m | 7:39PM0.14m | |||||||||||||||||
 |  |  | | | |  |  | | | | | | | | | | | | | | | | |
 | 6:18 | — | — | — | — | — | — | — | 6:18 | — | — | — | — | — | — | — | 6:18 | — | — | — | — | — | — |
 | — | — | — | — | 6:28 | — | — | — | — | — | — | — | 6:27 | — | — | — | — | — | — | — | 6:25 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 26 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
Feels °C | 22 | 21 | 24 | 23 | 25 | 25 | 25 | 25 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 24 |
Swell 1 Height (m) Direction Period (s) | 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 | NNW 11 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 |
| kJ | 68 | 104 | 67 | 63 | 61 | 59 | 58 | 58 | 87 | 112 | 141 | 145 | 133 | 126 | 123 | 121 | 112 | 82 | 80 | 80 | 77 | 75 | 55 |
Swell 2 Height (m) Direction Period (s) | NNW 10 | N 10 | N 10 | NNW 10 | N 10 | NNW 10 | N 14 | N 14 | SSW 13 | SSW 13 | SSW 13 | S 13 | S 12 | S 12 | S 12 | S 12 | S 13 | S 13 | S 13 | S 12 | S 12 | S 12 | S 12 |
| kJ | 11 | 8 | 8 | 9 | 8 | 9 | 16 | 32 | 57 | 33 | 33 | 51 | 28 | 26 | 26 | 27 | 29 | 30 | 29 | 28 | 27 | 26 | 26 |
Swell 3 Height (m) Direction Period (s) | 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 | SW 17 | SW 17 | SW 17 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | N 12 |
| kJ | 1 | 3 | 3 | 4 | 4 | 17 | 9 | 9 | 5 | 5 | 5 | 14 | 14 | 12 | 11 | 12 | 12 | 12 | 29 | 28 | 26 | 25 | 11 |
Wind waves Height (m) Direction Period (s) | E 8 | 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 9 | E 9 | E 9 | E 10 | E 10 | E 10 | ENE 10 | ENE 9 | ENE 9 |
| kJ | 471 | 449 | 416 | 427 | 419 | 388 | 378 | 365 | 394 | 361 | 370 | 359 | 448 | 539 | 653 | 715 | 780 | 755 | 755 | 755 | 681 | 589 | 626 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 44 | 44 | 44 | 44 | 116 | 44 | 44 | 44 | 44 | 44 | 44 | 50 | 50 | 45 | 44 | 44 | 44 | 44 | 45 | 52 | 50 | 45 | 44 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||||
Header Global | |||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Waimanalo surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest