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) - 3.5ft (1.1m), 8s period with ENE swell.
The current surf forecast for Castles Beach at 5AM is: 1.4m 7s primary swell from a East-northeast direction and 0.4m 13s secondary swell from a South direction, 0.3m 9s secondary swell from a East direction (forecast issued at 01:00am August 18). 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) | 3.5ft (1.1m) | 8s |
Table - waves today at Castles Beach. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 26°C on Wed afternoon, min 24°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | ||||||||||||||||||||||
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 | 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 7 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | E 8 | E 8 | E 8 | ENE 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | NE 7 | NE 7 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 188 | 168 | 168 | 149 | 156 | 136 | 140 | 143 | 143 | 151 | 128 | 89 | 86 | 84 | 140 | 82 | 84 | 80 | 78 | 58 | 55 | 55 | 94 | 119 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | cross-on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy |
High Tide | 7:01AM0.60m | 4:19PM0.57m | 8:55AM0.61m | 11:13AM0.64m | ||||||||||||||||||||
Low Tide | 11:37PM0.19m | 11:57AM0.50m | 00:07AM0.20m | 00:51AM0.22m | ||||||||||||||||||||
 | |  |  | | | | | | | | | | | | | |  | | | | | | | |
 | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:59 | — | — | — | — | — | — | — | 6:58 | — | — | — | — | — | — | — | 6:57 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 25 | 25 | 26 | 25 | 25 | 24 | 24 | 24 | 25 | 25 | 26 | 26 | 25 |
Feels °C | 24 | 24 | 24 | 25 | 24 | 25 | 25 | 25 | 24 | 24 | 25 | 26 | 26 | 27 | 26 | 26 | 25 | 26 | 26 | 28 | 28 | 28 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | NNE 7 | E 9 | E 8 | NE 6 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | NE 7 | NE 7 | NE 7 |
| kJ | 55 | 55 | 54 | 54 | 53 | 30 | 30 | 29 | 29 | 9 | 93 | 89 | 40 | 84 | 84 | 82 | 84 | 80 | 78 | 58 | 55 | 47 | 94 | 119 |
Swell 2 Height (m) Direction Period (s) | E 9 | E 9 | SW 16 | SW 17 | SW 18 | SW 18 | SW 18 | N 8 | NNE 7 | S 12 | NE 7 | NE 6 | S 12 | S 12 | NE 6 | S 12 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | E 8 | E 8 | SSW 16 |
| kJ | 7 | 15 | 11 | 11 | 12 | 12 | 12 | 4 | 5 | 26 | 47 | 43 | 11 | 11 | 39 | 11 | 49 | 42 | 40 | 42 | 43 | 55 | 43 | 27 |
Swell 3 Height (m) Direction Period (s) | — | N 7 | N 7 | N 7 | W 13 | W 13 | W 11 | SW 18 | SW 18 | SW 18 | S 12 | S 12 | SSW 16 | SSE 9 | S 12 | SW 16 | S 12 | S 12 | SSW 18 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | S 12 |
| kJ | — | 1 | 1 | 1 | 3 | 3 | 3 | 12 | 12 | 12 | 11 | 11 | 26 | 8 | 11 | 10 | 11 | 11 | 30 | 31 | 31 | 30 | 28 | 10 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | — | E 8 | NE 6 | ENE 8 | NE 6 | — | — | — | — | — | — | — | — |
| kJ | 188 | 168 | 168 | 149 | 156 | 136 | 140 | 143 | 143 | 151 | 128 | — | 86 | 39 | 140 | 38 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 41 | 18 | 41 | 18 | 41 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 0 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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