Surf Forecasts:
How big are the waves at Castles Beach today (31 Jul):
- Morning surf: Morning surf (31 Jul, local time) - 5.5ft (1.7m), 7s period with E swell.
- Afternoon surf: Afternoon surf (31 Jul, local time) - 6.5ft (2.0m), 7s period with E swell.
- Evening surf: Evening surf (31 Jul, local time) - 7.5ft (2.3m), 8s period with E swell.
The current surf forecast for Castles Beach at 10AM is: 1.8m 7s primary swell from a East direction and 0.6m 15s secondary swell from a East direction (forecast issued at 07:00am July 31). An open ocean swell of 0.4m 9s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 Jul) | 5.5ft (1.7m) | 7s |
| Afternoon (31 Jul) | 6.5ft (2.0m) | 7s |
| Evening (31 Jul) | 7.5ft (2.3m) | 8s |
Table - waves today at Castles Beach. (Swell directed towards the surf break)
Short Range ForecastSome drizzle, heaviest during Sun night. Warm (max 26°C on Fri morning, min 24°C on Sun night). Mainly strong winds. | |||||||||||||||||||||||
Friday 31 | Saturday 1 | Sunday 2 | |||||||||||||||||||||
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 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 8 | 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 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 279 | 315 | 352 | 416 | 439 | 578 | 737 | 838 | 825 | 890 | 836 | 792 | 824 | 824 | 889 | 908 | 864 | 740 | 740 | 682 | 705 | 688 | 619 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | cross-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 |
High Tide | 3:04AM0.52m | 4:06PM0.83m | 3:48AM0.54m | 4:25PM0.79m | 4:37AM0.55m | 4:43PM0.75m | |||||||||||||||||
Low Tide | 9:03AM0.12m | 10:40PM0.28m | 9:35AM0.18m | 11:03PM0.25m | 10:10AM0.26m | ||||||||||||||||||
 |  | | |  |  |  | | | | | | | | | | | | | | | |  | |
 | 6:03 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — |
 | — | — | — | — | 7:09 | — | — | — | — | — | — | — | 7:09 | — | — | — | — | — | — | — | 7:08 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 26 | 25 | 24 | 24 | 23 | 22 | 21 | 21 | 21 | 21 | 22 | 21 | 22 | 22 | 21 | 22 | 21 | 22 | 22 | 22 | 22 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | E 16 | E 15 | E 15 | E 15 | E 16 | E 15 | E 15 | E 15 | E 14 | E 15 | E 15 | E 14 | E 14 | E 14 | E 14 | E 14 | E 14 | E 14 | E 14 | E 14 | E 14 | E 13 | E 13 |
| kJ | 185 | 167 | 157 | 228 | 231 | 222 | 213 | 205 | 202 | 205 | 205 | 199 | 196 | 199 | 199 | 253 | 138 | 191 | 138 | 136 | 134 | 127 | 121 |
Swell 2 Height (m) Direction Period (s) | N 9 | N 9 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 7 | N 8 | SSW 14 | N 10 | N 10 | N 10 | N 10 | N 9 | N 9 | N 9 | N 9 | N 9 | N 8 |
| kJ | 25 | 24 | 23 | 12 | 12 | 12 | 12 | 11 | 11 | 5 | 10 | 4 | 18 | 9 | 18 | 17 | 16 | 16 | 26 | 25 | 14 | 13 | 13 |
Swell 3 Height (m) Direction Period (s) | S 13 | S 12 | S 12 | S 12 | S 12 | S 12 | S 12 | S 12 | S 12 | S 12 | SSW 14 | SSW 14 | S 11 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SW 13 | SW 13 | S 13 |
| kJ | 29 | 28 | 27 | 26 | 26 | 25 | 25 | 11 | 11 | 11 | 19 | 18 | 9 | 18 | 19 | 20 | 20 | 20 | 19 | 18 | 7 | 7 | 14 |
Wind waves Height (m) Direction Period (s) | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 8 | 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 |
| kJ | 279 | 315 | 352 | 416 | 439 | 578 | 737 | 838 | 825 | 890 | 836 | 792 | 824 | 824 | 889 | 908 | 864 | 740 | 740 | 682 | 705 | 688 | 619 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 19 | 45 | 47 | 50 | 50 | 47 | 125 | 126 | 126 | 155 | 145 | 126 | 126 | 45 | 51 | 126 | 45 | 47 | 126 | 126 | 154 | 45 | 45 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||||
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