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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 Friday 29 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 slightly cooler than normal)How big are the waves at Castles Beach today (29 May):
- Morning surf: Morning surf (29 May, local time) - 5ft (1.5m), 7s period with ENE swell.
- Afternoon surf: Afternoon surf (29 May, local time) - 4.5ft (1.4m), 7s period with ENE swell.
- Evening surf: Evening surf (29 May, local time) - 5ft (1.5m), 7s period with ENE swell.
The current surf forecast for Castles Beach at 10AM is: 1.5m 7s primary swell from a East-northeast direction and 0.6m 10s secondary swell from a North-northeast direction (forecast issued at 07:00am May 29). An open ocean swell of 0.6m 12s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (29 May) | 5ft (1.5m) | 7s |
| Afternoon (29 May) | 4.5ft (1.4m) | 7s |
| Evening (29 May) | 5ft (1.5m) | 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 4mm), mostly falling on Fri morning. Warm (max 24°C on Fri afternoon, min 23°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||||||
Friday 29 | Saturday 30 | Sunday 31 | Mon 1 | |||||||||||||||||||||
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 7 | ENE 7 | S 20 | S 20 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | S 17 | S 17 | ENE 7 | ENE 7 | ENE 8 | ENE 7 | SSW 16 | NE 7 | NE 8 | NE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | |
210 | 217 | 196 | 197 | 188 | 229 | 223 | 197 | 173 | 154 | 153 | 167 | 147 | 151 | 140 | 82 | 79 | 82 | 79 | 70 | 70 | 70 | 70 | 68 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | cross-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 | 2:23PM0.84m | 00:37AM0.47m | 2:55PM0.85m | 1:06AM0.46m | 3:30PM0.85m | 1:34AM0.45m | ||||||||||||||||||
Low Tide | 6:45AM0.08m | 9:07PM0.41m | 7:14AM0.06m | 9:47PM0.40m | 7:44AM0.05m | 10:26PM0.40m | ||||||||||||||||||
 |  |  | | |  | |  | |  | | | | |  | | | | | | | | | | |
 | 5:48 | — | — | — | — | — | — | — | 5:48 | — | — | — | — | — | — | — | 5:48 | — | — | — | — | — | — | 5:48 |
 | — | — | — | — | 7:07 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — | — | 7:08 | — | — | 7:08 |
1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | — | — | — | — | — | — | — | |
Temp °C | 23 | 23 | 23 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 23 | 23 |
21 | 21 | 21 | 22 | 22 | 21 | 21 | 22 | 23 | 22 | 22 | 24 | 23 | 23 | 23 | 24 | 25 | 24 | 24 | 25 | 25 | 25 | 23 | 24 | |
Swell 1 Height (m) Direction Period (s) | NNW 12 | NNW 12 | NNE 10 | NNW 12 | NNW 11 | NNW 11 | NNE 11 | NNE 11 | NNW 11 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NE 7 | NE 7 | NE 8 | NE 7 | E 8 | N 11 | N 11 | N 11 | ENE 7 |
 kJ | 91 | 90 | 78 | 90 | 87 | 82 | 64 | 65 | 65 | 63 | 57 | 56 | 55 | 75 | 54 | 52 | 79 | 82 | 79 | 29 | 61 | 61 | 59 | 68 |
Swell 2 Height (m) Direction Period (s) | N 11 | N 10 | NNW 12 | N 10 | N 10 | S 19 | NNW 11 | NNW 11 | NNE 11 | NNE 11 | S 17 | S 16 | S 16 | SSW 16 | SSW 16 | N 10 | ESE 8 | ESE 8 | E 8 | N 9 | E 8 | E 8 | E 8 | N 10 |
| kJ | 82 | 53 | 90 | 48 | 47 | 178 | 47 | 66 | 65 | 64 | 147 | 139 | 134 | 86 | 84 | 48 | 47 | 45 | 42 | 43 | 30 | 31 | 32 | 53 |
Swell 3 Height (m) Direction Period (s) | NNE 13 | S 20 | S 20 | S 20 | S 19 | NNE 10 | S 18 | S 18 | S 18 | S 17 | NNE 10 | NNE 10 | NNE 10 | NNE 10 | NNE 10 | SSW 16 | N 9 | N 9 | NNW 9 | N 8 | NNE 8 | N 8 | N 8 | E 8 |
| kJ | 33 | 125 | 196 | 194 | 188 | 31 | 165 | 162 | 158 | 154 | 32 | 32 | 32 | 18 | 18 | 82 | 54 | 43 | 28 | 21 | 22 | 19 | 18 | 33 |
Wind waves Height (m) Direction Period (s) | 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 8 | ENE 7 | E 8 | — | — | — | ENE 7 | ENE 7 | ENE 7 | ENE 7 | — |
| kJ | 210 | 217 | 191 | 197 | 181 | 229 | 223 | 197 | 173 | 127 | 153 | 167 | 147 | 151 | 140 | 74 | — | — | — | 70 | 70 | 70 | 70 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 41 | 41 | 41 | 41 | 41 | 42 | 42 | 41 | 41 | 18 | 18 | 18 | 41 | 41 | 41 | 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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