Surf Forecasts:
How big are the waves at Castles Beach today (21 Aug):
- Afternoon surf: Afternoon surf (21 Aug, local time) - 3.5ft (1.1m), 7s period with NE swell.
- Evening surf: Evening surf (21 Aug, local time) - 4ft (1.2m), 7s period with ENE swell.
The current surf forecast for Castles Beach at 12AM is: 0.8m 7s primary swell from a East-northeast direction and 0.8m 7s secondary swell from a North-northeast direction (forecast issued at 07:00pm August 20). The wind direction is predicted to be onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | - | - |
| Afternoon (21 Aug) | 3.5ft (1.1m) | 7s |
| Evening (21 Aug) | 4ft (1.2m) | 7s |
Table - waves today at Castles Beach. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 27°C on Fri afternoon, min 25°C on Thu night). Winds increasing (calm on Thu night, fresh winds from the ENE by Sat night). | |||||||||||||||||||
Thu 20 | Friday 21 | Saturday 22 | |||||||||||||||||
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 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | NE 7 | NE 7 | NE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 7 | ENE 7 | E 7 | E 7 | E 7 | E 7 |
Wave Graph  | |||||||||||||||||||
 kJ | 138 | 138 | 71 | 69 | 52 | 79 | 109 | 96 | 117 | 117 | 113 | 158 | 153 | 152 | 180 | 206 | 255 | 316 | 371 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | glassy | cross-on | cross-on | glassy | on | on | on | on | on | on | on | on | on | on | cross-on | on | on |
High Tide | 12:09PM0.69m | 12:42PM0.74m | 9:57PM0.37m | ||||||||||||||||
Low Tide | 2:10AM0.23m | 3:54AM0.21m | 9:32PM0.37m | ||||||||||||||||
 |  | | | | | |  | | | | | | | | | |  | | |
 | — | — | — | — | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — |
 | 6:57 | — | — | — | — | — | — | — | 6:55 | — | — | — | — | — | — | — | 6:55 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 26 | 25 | 25 | 25 | 26 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 |
Feels °C | 29 | 30 | 31 | 29 | 29 | 29 | 29 | 30 | 29 | 29 | 27 | 27 | 27 | 27 | 26 | 24 | 24 | 24 | 24 |
Swell 1 Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | NE 7 | NE 7 | NE 7 | ESE 8 | ESE 8 | E 8 | SSW 16 | SSW 16 | ESE 8 | SSE 15 | SSW 16 | SSW 16 | SSW 16 | WNW 13 |
| kJ | 138 | 138 | 71 | 69 | 52 | 79 | 109 | 96 | 7 | 7 | 12 | 50 | 51 | 14 | 42 | 25 | 25 | 24 | 35 |
Swell 2 Height (m) Direction Period (s) | SSW 18 | SSW 17 | NNE 7 | NNE 6 | NNE 6 | E 8 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | S 13 | ESE 8 | SSE 14 | SSW 16 | S 13 | S 12 | WNW 14 | SSW 16 |
| kJ | 30 | 28 | 54 | 44 | 45 | 20 | 29 | 29 | 25 | 25 | 25 | 14 | 14 | 38 | 26 | 13 | 12 | 20 | 24 |
Swell 3 Height (m) Direction Period (s) | S 12 | S 12 | SSW 16 | SSW 17 | SSW 17 | SSW 17 | S 15 | E 9 | SSE 8 | SSE 8 | SSE 8 | SSE 16 | S 13 | SSW 16 | SE 8 | SSE 15 | SSE 15 | S 12 | S 12 |
| kJ | 10 | 11 | 27 | 27 | 29 | 29 | 17 | 13 | 7 | 7 | 7 | 24 | 13 | 26 | 3 | 21 | 21 | 12 | 11 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 7 | ENE 7 | E 7 | E 7 | E 7 | E 7 |
| kJ | — | — | — | — | — | — | — | — | 117 | 117 | 113 | 158 | 153 | 152 | 180 | 206 | 255 | 316 | 371 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 16 | 16 | 0 | 13 | 1 | 0 | 18 | 18 | 18 | 18 | 19 | 41 | 18 | 18 | 41 | 45 | 45 | 45 | 45 |
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 Castles Beach 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