Surf Forecasts:
How big are the waves at Castles Beach today (18 Aug):
- Morning surf: Morning surf (18 Aug, local time) - 4.5ft (1.4m), 7s period with ENE swell.
- Afternoon surf: Afternoon surf (18 Aug, local time) - 4ft (1.2m), 7s period with ENE swell.
- Evening surf: Evening surf (18 Aug, local time) - 4.5ft (1.3m), 7s period with ENE swell.
The current surf forecast for Castles Beach at 6PM is: 1.3m 7s primary swell from a East-northeast direction and 0.3m 13s secondary swell from a South direction (forecast issued at 01:00pm August 18). An open ocean swell of 0.1m 18s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Aug) | 4.5ft (1.4m) | 7s |
| Afternoon (18 Aug) | 4ft (1.2m) | 7s |
| Evening (18 Aug) | 4.5ft (1.3m) | 7s |
Table - waves today at Castles Beach. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 27°C on Thu night, min 24°C on Tue night). Wind will be generally light. | |||||||||||||||||||||
Tue 18 | Wednesday 19 | Thursday 20 | |||||||||||||||||||
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 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | E 9 | ENE 7 | E 8 | E 8 | ENE 8 | ENE 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | NE 7 | NE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 173 | 156 | 160 | 172 | 163 | 172 | 151 | 145 | 121 | 86 | 84 | 167 | 146 | 82 | 78 | 74 | 57 | 55 | 54 | 55 | 79 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | on | on | on | on | cross-on | on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 4:19PM0.57m | 8:55AM0.61m | 11:13AM0.64m | ||||||||||||||||||
Low Tide | 11:57AM0.50m | 00:07AM0.20m | 00:51AM0.22m | ||||||||||||||||||
 | | |  |  | | |  | | | | | | | | | | | | | | |
 | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | 6:59 | — | — | — | — | — | — | — | 6:58 | — | — | — | — | — | — | — | 6:57 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 26 | 25 | 25 | 25 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 25 | 25 | 25 | 26 | 27 | 26 |
Feels °C | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 27 | 27 | 28 | 29 | 30 | 28 |
Swell 1 Height (m) Direction Period (s) | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | NNE 7 | NNE 7 | S 12 | NE 6 | NE 6 | E 8 | S 12 | E 8 | E 8 | E 8 | NE 6 | NE 6 | NE 7 | NE 7 | NE 7 |
| kJ | 54 | 30 | 30 | 30 | 29 | 29 | 9 | 41 | 11 | 40 | 39 | 86 | 11 | 82 | 78 | 74 | 40 | 43 | 46 | 55 | 79 |
Swell 2 Height (m) Direction Period (s) | SW 17 | SW 18 | SW 18 | SW 18 | N 7 | NNE 7 | S 12 | S 12 | SSE 9 | S 12 | S 12 | NE 6 | SW 16 | NE 6 | NE 6 | NE 6 | E 8 | E 8 | E 8 | E 8 | E 8 |
| kJ | 11 | 12 | 12 | 12 | 4 | 5 | 26 | 11 | 8 | 11 | 11 | 39 | 10 | 46 | 40 | 40 | 57 | 55 | 54 | 55 | 28 |
Swell 3 Height (m) Direction Period (s) | N 7 | W 13 | W 13 | W 11 | SW 18 | SW 18 | SE 10 | SSE 9 | SW 16 | SSW 16 | SW 16 | S 12 | SE 10 | S 12 | S 12 | SSW 18 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 16 |
| kJ | 1 | 3 | 3 | 3 | 12 | 12 | 4 | 9 | 10 | 26 | 11 | 11 | 4 | 11 | 11 | 30 | 31 | 31 | 30 | 28 | 27 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | E 9 | ENE 7 | E 8 | E 8 | ENE 8 | ENE 8 | — | — | — | — | — | — | — | — |
| kJ | 173 | 156 | 160 | 172 | 163 | 172 | 151 | 145 | 121 | 86 | 84 | 167 | 146 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 41 | 41 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 16 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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