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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 7 pm Monday 25 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
25.0° 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 2AM is: 2.2m 7s primary swell from a East-northeast direction and 0.3m 13s secondary swell from a South direction (forecast issued at 07:00pm May 25). An open ocean swell of 0.4m 10s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (26 May) | 6.5ft (2.0m) | 7s |
| Afternoon (26 May) | 6.5ft (2.0m) | 7s |
| Evening (26 May) | 7ft (2.2m) | 7s |
Table - waves today at Castles Beach. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 6mm), mostly falling on Tue afternoon. Warm (max 24°C on Wed afternoon, min 23°C on Mon night). Mainly strong winds. | ||||||||||||||||||||||||
Mon 25 | Tuesday 26 | Wednesday 27 | Thu 28 | |||||||||||||||||||||
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 | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | |
519 | 493 | 482 | 503 | 516 | 435 | 344 | 359 | 489 | 503 | 444 | 379 | 359 | 334 | 310 | 325 | 302 | 325 | 310 | 348 | 325 | 263 | 235 | 209 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | on | on | on | on | on | on | cross-on | on | on | on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | |
High Tide | 10:29PM0.60m | 12:48PM0.69m | 11:03PM0.56m | 1:21PM0.76m | 11:35PM0.52m | 1:52PM0.81m | ||||||||||||||||||
Low Tide | 5:21PM0.45m | 5:31AM0.16m | 6:37PM0.45m | 5:54AM0.13m | 7:37PM0.43m | 6:19AM0.10m | ||||||||||||||||||
 |  |  | | | | |  |  | | | | | | | | | |  |  | | | | | |
 | — | — | — | — | 5:48 | — | — | — | — | — | — | — | 5:48 | — | — | — | — | — | — | — | 5:48 | — | — | — |
 | 7:06 | — | — | — | — | — | — | — | 7:06 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — | 7:07 |
— | — | — | — | — | — | — | — | 1 | — | — | — | — | — | 1 | — | — | — | 1 | — | 1 | 1 | — | — | |
Temp °C | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 |
21 | 20 | 19 | 19 | 19 | 19 | 20 | 19 | 19 | 19 | 19 | 18 | 20 | 21 | 20 | 21 | 19 | 19 | 19 | 20 | 19 | 20 | 20 | 21 | |
Swell 1 Height (m) Direction Period (s) | NW 11 | NW 11 | NW 10 | NW 10 | NW 10 | NNW 10 | S 13 | NW 19 | NW 18 | NW 18 | NW 16 | NW 16 | NW 15 | NW 15 | NW 14 | NW 14 | NW 14 | NW 14 | NW 13 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 |
 kJ | 29 | 29 | 28 | 27 | 16 | 10 | 29 | 58 | 114 | 192 | 167 | 163 | 218 | 212 | 206 | 192 | 195 | 184 | 171 | 171 | 138 | 128 | 120 | 118 |
Swell 2 Height (m) Direction Period (s) | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | S 15 | S 15 | S 14 | S 14 | S 14 | S 14 | S 13 | S 13 | NNE 13 | S 13 | N 11 | N 12 | N 12 | N 12 |
| kJ | 32 | 31 | 31 | 30 | 30 | 30 | 9 | 9 | 9 | 9 | 39 | 38 | 37 | 37 | 36 | 35 | 32 | 31 | 53 | 30 | 22 | 73 | 73 | 75 |
Swell 3 Height (m) Direction Period (s) | S 19 | — | S 17 | S 17 | S 17 | S 16 | NW 20 | S 16 | S 12 | S 16 | NNW 10 | NNW 9 | NNW 9 | NNW 9 | NW 9 | NW 9 | N 12 | N 12 | S 13 | N 11 | S 13 | S 12 | S 12 | S 12 |
| kJ | 7 | — | 5 | 5 | 6 | 21 | 60 | 20 | 11 | 19 | 9 | 9 | 8 | 8 | 3 | 3 | 12 | 27 | 31 | 23 | 29 | 27 | 26 | 26 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
| kJ | 519 | 493 | 482 | 503 | 516 | 435 | 344 | 359 | 489 | 503 | 444 | 379 | 359 | 334 | 310 | 325 | 302 | 325 | 310 | 348 | 325 | 263 | 235 | 209 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 51 | 45 | 51 | 45 | 126 | 51 | 45 | 47 | 123 | 51 | 45 | 41 | 41 | 41 | 41 | 45 | 45 | 42 | 47 | 41 | 41 | 42 | 41 | 41 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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