Surf Forecasts:
How big are the waves at Castles Beach today (19 Sep):
- Morning surf: Morning surf (19 Sep, local time) - 6.5ft (2.0m), 8s period with E swell.
- Afternoon surf: Afternoon surf (19 Sep, local time) - 6.5ft (2.0m), 8s period with E swell.
- Evening surf: Evening surf (19 Sep, local time) - 7ft (2.1m), 8s period with E swell.
The current surf forecast for Castles Beach at 10PM is: 2.1m 8s primary swell from a East direction and 0.4m 16s secondary swell from a South-southwest direction, 0.1m 13s secondary swell from a South direction (forecast issued at 01:00pm September 19). The wind direction is predicted to be onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Sep) | 6.5ft (2.0m) | 8s |
| Afternoon (19 Sep) | 6.5ft (2.0m) | 8s |
| Evening (19 Sep) | 7ft (2.1m) | 8s |
Table - waves today at Castles Beach. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 2mm), mostly falling on Mon night. Warm (max 26°C on Sat afternoon, min 25°C on Sun night). Mainly fresh winds. | |||||||||||||||||||||
Sat 19 | Sunday 20 | Monday 21 | |||||||||||||||||||
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 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | E 7 | ENE 7 | E 7 | E 7 | E 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 522 | 513 | 579 | 565 | 551 | 509 | 473 | 437 | 473 | 373 | 388 | 352 | 388 | 411 | 435 | 405 | 414 | 395 | 384 | 394 | 365 |
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 | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 11:15AM0.68m | 11:53AM0.71m | 11:00PM0.37m | 12:20PM0.75m | |||||||||||||||||
Low Tide | 3:03AM0.26m | 7:51PM0.34m | 4:34AM0.24m | 7:28PM0.32m | |||||||||||||||||
 | | |  | | |  |  | | | | | | | | | | | | | | |
 | — | — | — | — | — | — | 6:18 | — | — | — | — | — | — | — | 6:18 | — | — | — | — | — | — |
 | — | — | 6:30 | — | — | — | — | — | — | — | 6:29 | — | — | — | — | — | — | — | 6:28 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 24 | 24 | 25 | 25 | 26 | 25 | 25 | 24 | 24 | 24 | 25 | 23 | 24 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 24 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | S 15 | SSW 15 | SSW 15 | SSW 14 | S 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 |
| kJ | 61 | 62 | 62 | 48 | 86 | 86 | 86 | 85 | 79 | 73 | 74 | 115 | 74 | 71 | 68 | 104 | 67 | 63 | 61 | 59 | 58 |
Swell 2 Height (m) Direction Period (s) | S 18 | S 18 | S 18 | S 18 | S 13 | S 13 | SSW 13 | S 8 | SSE 8 | N 11 | N 11 | N 11 | N 11 | N 10 | NNW 10 | N 10 | N 10 | NNW 10 | NNW 10 | NNW 10 | N 14 |
| kJ | 25 | 25 | 25 | 25 | 3 | 3 | 17 | 1 | 6 | 2 | 9 | 2 | 2 | 8 | 11 | 8 | 8 | 9 | 9 | 9 | 16 |
Swell 3 Height (m) Direction Period (s) | S 8 | S 9 | S 9 | S 9 | N 12 | N 12 | N 12 | N 11 | N 11 | S 6 | NW 9 | NW 9 | NW 8 | NW 8 | N 8 | NW 8 | NW 8 | NW 10 | NW 12 | N 15 | N 9 |
| kJ | 1 | 1 | 1 | 1 | 3 | 3 | 3 | 3 | 2 | 1 | 3 | 3 | 3 | 3 | 1 | 3 | 3 | 4 | 6 | 17 | 2 |
Wind waves Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | E 7 | ENE 7 | E 7 | E 7 | E 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 522 | 513 | 579 | 565 | 551 | 509 | 473 | 437 | 473 | 373 | 388 | 352 | 388 | 411 | 435 | 405 | 414 | 395 | 384 | 394 | 365 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 47 | 47 | 45 | 45 | 41 | 41 | 41 | 41 | 45 | 45 | 45 | 41 | 41 | 41 | 41 | 41 | 45 | 41 | 45 | 41 | 41 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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