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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 Wednesday 17 Sep 2025 HST
How big are the waves at Castles Beach today?
The current surf forecast for Castles Beach at 12PM is: 1.4m 6s primary swell from a East direction and 0.2m 12s secondary swell from a South direction (forecast issued at 07:00am September 17). An open ocean swell of 0.3m 8s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Sep) | 4.5ft (1.4m) | 6s |
| Afternoon (17 Sep) | 4.5ft (1.4m) | 6s |
| Evening (17 Sep) | 5ft (1.5m) | 6s |
Table - waves today at Castles Beach. (Swell directed towards the surf break)
Wednesday 17 | Thursday 18 | Friday 19 | Sat 20 | |||||||||||||||||||||
| 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 | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 7 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 196 | 146 | 137 | 162 | 126 | 146 | 188 | 226 | 277 | 226 | 213 | 170 | 156 | 184 | 167 | 145 | 117 | 102 | 98 | 104 | 99 | 90 | 183 | 205 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | on | on | cross- on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 12:44PM 0.82 | 12:23AM 0.47 | 1:13PM 0.82 | 1:03AM 0.54 | 1:37PM 0.80 | 1:39AM 0.60 | ||||||||||||||||||
Low Tide / height (m) | 5:12AM 0.18 | 7:41PM 0.30 | 6:07AM 0.17 | 7:51PM 0.27 | 6:51AM 0.17 | 8:04PM 0.24 | ||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Sat 20 | |||||||||||||||||||||
| Sunrise | - | 6:18 | - | - | - | - | - | - | - | 6:18 | - | - | - | - | - | - | - | 6:18 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:31 | - | - | - | - | - | - | - | 6:30 | - | - | - | - | - | - | - | 6:30 | - | - | - |
 |  | | | |  | | |  | | | | |  | | | |  | | |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | - | - | - | - | - | 1 | 1 | - | - |
| Temp. °C | 25 | 25 | 25 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 25 | 25 | 25 | 25 |
| Feels °C (?) | 23 | 23 | 23 | 24 | 23 | 23 | 23 | 23 | 22 | 23 | 23 | 25 | 24 | 24 | 25 | 25 | 25 | 25 | 26 | 25 | 24 | 25 | 24 | 25 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for HAW - Oahu
Offshore wind reported 5 km from Waikiki (light winds from the E at BUOY-OOUH1 5 km from Waikiki). 0.5m 10s swell from the SSE with a 0.3m 11s groundswell from the S and a 0.2m 13s groundswell from the WSW. 3 swells combining to make bigger set waves.
1 h 48 min ago
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Castles Beach surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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