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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 am Monday 04 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
24.9° 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 1PM is: 1.3m 8s primary swell from a East-northeast direction and 0.2m 13s secondary swell from a South-southwest direction (forecast issued at 07:00am May 04). An open ocean swell of 0.7m 13s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (04 May) | 4.5ft (1.3m) | 8s |
| Afternoon (04 May) | 4ft (1.2m) | 8s |
| Evening (04 May) | 4ft (1.2m) | 8s |
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 2mm), mostly falling on Mon afternoon. Warm (max 24°C on Tue morning, min 23°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||||||
Monday 4 | Tuesday 5 | Wednesday 6 | Thu 7 | |||||||||||||||||||||
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 | 2 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
ENE 6 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | |
84 | 176 | 181 | 186 | 159 | 178 | 168 | 159 | 113 | 146 | 146 | 103 | 81 | 69 | 54 | 43 | 44 | 49 | 44 | 45 | 45 | 46 | 33 | 34 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on | on | on | cross-off | glassy | cross-off | cross-off | cross | cross-on | cross-on | cross | cross | cross-on | cross-on | |
High Tide | 2:15AM0.47m | 4:51PM0.79m | 2:19AM0.45m | 5:36PM0.76m | 6:28PM0.73m | |||||||||||||||||||
Low Tide | 9:01AM0.08m | 11:53PM0.44m | 9:29AM0.10m | 9:59AM0.13m | ||||||||||||||||||||
 |  | | |  | | | |  |  | | | |  | | | | | | | | | | | |
 | 5:58 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | 5:56 |
 | — | — | — | — | 6:57 | — | — | — | — | — | — | — | 6:57 | — | — | — | — | — | — | — | 6:58 | — | — | 6:58 |
— | — | — | — | 1 | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 24 | 24 | 23 | 23 | 23 |
22 | 22 | 22 | 23 | 23 | 22 | 22 | 23 | 24 | 27 | 26 | 26 | 26 | 26 | 27 | 25 | 25 | 25 | 25 | 26 | 25 | 24 | 24 | 24 | |
Swell 1 Height (m) Direction Period (s) | E 8 | NW 11 | NW 11 | NW 13 | NW 13 | NW 12 | NW 12 | NNW 12 | E 7 | NW 12 | E 6 | E 7 | E 7 | E 7 | NNW 11 | NW 11 | NW 11 | NW 10 | NW 10 | NW 10 | NNW 10 | NNW 10 | NNW 10 | NW 10 |
 kJ | 55 | 58 | 40 | 166 | 196 | 248 | 240 | 247 | 113 | 202 | 60 | 103 | 81 | 69 | 149 | 119 | 117 | 110 | 102 | 100 | 86 | 85 | 64 | 46 |
Swell 2 Height (m) Direction Period (s) | NW 11 | NW 13 | NW 13 | SSW 13 | SSW 13 | SSW 13 | S 13 | S 13 | NW 12 | ENE 7 | NW 12 | NNW 11 | NNW 11 | NNW 11 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | NW 17 |
| kJ | 58 | 46 | 61 | 17 | 17 | 17 | 13 | 13 | 205 | 59 | 195 | 160 | 154 | 151 | 54 | 43 | 44 | 49 | 44 | 45 | 45 | 46 | 33 | 188 |
Swell 3 Height (m) Direction Period (s) | SSW 14 | S 14 | S 13 | S 12 | S 11 | S 12 | SW 18 | SW 18 | ESE 9 | ESE 6 | ENE 7 | S 12 | S 12 | ENE 7 | NE 6 | NE 7 | NE 7 | NE 7 | ENE 7 | ENE 6 | ENE 8 | NE 8 | NW 18 | E 8 |
| kJ | 40 | 15 | 14 | 3 | 3 | 3 | 12 | 12 | 16 | 31 | 18 | 11 | 3 | 4 | 9 | 22 | 11 | 12 | 4 | 4 | 7 | 18 | 109 | 34 |
Wind waves Height (m) Direction Period (s) | ENE 6 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 7 | E 6 | E 7 | E 7 | — | — | — | — | — | — | — | — | — | — | NNE 3 | — | E 8 |
| kJ | 84 | 176 | 181 | 186 | 159 | 178 | 168 | 159 | 61 | 146 | 146 | — | — | — | — | — | — | — | — | — | — | 1 | — | 33 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 18 | 18 | 18 | 18 | 18 | 18 | 41 | 18 | 13 | 2 | 15 | 13 | 2 | 0 | 0 | 0 | 0 | 16 | 18 | 16 | 16 | 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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