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Castles Beach Surf Forecast
/ HAW – Oahu (122 breaks) / Hawaii (267 breaks) /
Surf Forecasts:
Castles Beach surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 1 am Thursday 14 May 2026 HSTForecast update in hr min s Forecast update imminent
Castles Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Castles Beach sea temperature is
25.3° C
(Which is normal for this time of year)How big are the waves at Castles Beach today?
The current surf forecast for Castles Beach at 6AM is: 1.8m 7s primary swell from a East-northeast direction (forecast issued at 01:00am May 14). An open ocean swell of 0.6m 16s is not directed at the surf break, a second open ocean swell of 0.4m 8s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 May) | 5.5ft (1.7m) | 7s |
| Afternoon (14 May) | 5ft (1.6m) | 7s |
| Evening (14 May) | 5ft (1.6m) | 7s |
Table - waves today at Castles Beach. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 29mm), heaviest during Fri afternoon. Warm (max 24°C on Thu morning, min 20°C on Fri afternoon). Winds decreasing (fresh winds from the ENE on Thu morning, calm by Fri afternoon). | ||||||||||||||||||||||||
Thursday 14 | Friday 15 | Saturday 16 | ||||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 8 | ESE 8 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | |
326 | 302 | 310 | 270 | 254 | 247 | 261 | 266 | 273 | 273 | 140 | 320 | 201 | 259 | 280 | 333 | 341 | 322 | 322 | 322 | 322 | 291 | 280 | 280 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | on | on | on | cross-on | on | on | on | on | on | on | cross-on | glassy | on | on | on | on | on | on | on | cross-on | cross-on | on | |
High Tide | 11:50PM0.61m | 1:42PM0.84m | 00:24AM0.57m | 2:24PM0.91m | 00:58AM0.53m | 3:09PM0.95m | ||||||||||||||||||
Low Tide | 6:29AM0.05m | 7:53PM0.39m | 7:00AM-0.00m | 8:51PM0.39m | 7:34AM-0.04m | 9:49PM0.39m | ||||||||||||||||||
 |  |  |  | | | | |  | |  | |  | |  | | | |  | | | | | | |
 | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — |
 | — | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:01 | — | — | — | — | — | — | — | 7:01 | — | — |
— | — | — | 1 | — | — | — | — | 1 | — | 1 | 2 | 10 | 10 | 2 | — | — | — | — | — | — | 1 | — | 1 | |
Temp °C | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 23 | 24 | 24 | 24 | 21 | 20 | 21 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 |
20 | 20 | 20 | 22 | 22 | 22 | 23 | 23 | 22 | 24 | 25 | 25 | 20 | 22 | 22 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 26 | |
Swell 1 Height (m) Direction Period (s) | NW 16 | NNW 16 | NW 15 | NW 15 | NNW 15 | NW 15 | NW 14 | NW 14 | NW 13 | NW 13 | NE 7 | ENE 7 | NE 7 | NW 12 | NW 12 | NW 12 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
 kJ | 132 | 177 | 242 | 322 | 382 | 418 | 469 | 437 | 352 | 342 | 140 | 188 | 112 | 147 | 144 | 112 | 341 | 322 | 322 | 322 | 322 | 291 | 280 | 280 |
Swell 2 Height (m) Direction Period (s) | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | NNE 8 | NNW 13 | NW 12 | E 8 | N 8 | N 7 | N 6 | NNW 11 | NNW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NNW 10 |
| kJ | 22 | 22 | 22 | 22 | 35 | 22 | 22 | 22 | 22 | 22 | 295 | 227 | 131 | 21 | 26 | 20 | 84 | 81 | 59 | 58 | 58 | 58 | 57 | 42 |
Swell 3 Height (m) Direction Period (s) | NW 9 | NW 8 | NNW 8 | NW 11 | NNW 11 | S 12 | NW 10 | S 12 | S 12 | S 12 | NNE 8 | E 8 | NW 12 | SSE 11 | SSE 11 | NNW 15 | N 6 | SSE 11 | NNW 13 | NNW 13 | SSE 10 | SSW 16 | SSW 16 | SSE 12 |
| kJ | 12 | 11 | 7 | 19 | 11 | 3 | 15 | 11 | 11 | 11 | 13 | 64 | 212 | 12 | 12 | 21 | 7 | 11 | 18 | 17 | 10 | 26 | 26 | 14 |
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 | E 8 | E 8 | ESE 8 | ENE 7 | ENE 8 | ENE 8 | — | — | — | — | — | — | — | — |
| kJ | 326 | 302 | 310 | 270 | 254 | 247 | 261 | 266 | 273 | 273 | 137 | 320 | 201 | 259 | 280 | 333 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 41 | 41 | 41 | 41 | 42 | 41 | 41 | 41 | 18 | 18 | 13 | 18 | 42 | 0 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Ocean Swells (m)- Wind Speed (km/h)
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