Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Castles Beach surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 7 am Saturday 03 Jan 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 slightly warmer than usual)How big are the waves at Castles Beach today?
The current surf forecast for Castles Beach at 11AM is: 1.3m 7s primary swell from a East direction (forecast issued at 07:00am January 03). An open ocean swell of 1.7m 12s is not directed at the surf break, a second open ocean swell of 0.4m 13s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (03 Jan) | 4.5ft (1.4m) | 7s |
| Afternoon (03 Jan) | 3.5ft (1.1m) | 7s |
| Evening (03 Jan) | 1.5ft (0.5m) | 14s |
Table - waves today at Castles Beach. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 03 | Sunday 04 | Monday 05 | Tue 06 | |||||||||||||||||||||
| 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) (?) | 7 | 7 | 7 | 7 | 7 | 6 | 14 | 13 | 6 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 8 | 8 | 9 | 9 | 9 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 157 | 180 | 152 | 107 | 107 | 81 | 127 | 120 | 70 | 755 | 658 | 647 | 559 | 447 | 494 | 572 | 496 | 681 | 724 | 1942 | 2296 | 2205 | 1875 | 2562 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | on | on | on | on | cross | cross- off | glass | cross- off | cross- on | cross | cross- on | cross- on | cross- on | on | on | on | on | on | on | on | on | on |
High Tide / height (m) | 3:17AM 0.99 | 1:45PM 0.45 | 3:55AM 0.97 | 2:36PM 0.46 | 4:30AM 0.94 | 3:27PM 0.46 | ||||||||||||||||||
Low Tide / height (m) | 10:15AM 0.36 | 8:14PM -0.04 | 10:49AM 0.35 | 8:55PM -0.00 | 11:23AM 0.34 | 9:34PM 0.07 | ||||||||||||||||||
Saturday 03 | Sunday 04 | Monday 05 | Tue 06 | |||||||||||||||||||||
| Sunrise | - | 7:09 | - | - | - | - | - | - | - | 7:09 | - | - | - | - | - | - | - | 7:09 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:00 | - | - | - | - | - | - | - | 6:01 | - | - | - | - | - | - | - | 6:01 | - | - | - |
 |  |  | | |  | | |  |  | |  | | | | | | |  | | | |  | | |
Rain (mm) | 1 | 1 | - | - | - | 1 | 3 | 3 | 4 | 2 | 3 | 2 | 2 | 1 | 2 | 1 | 2 | 3 | 6 | 5 | 7 | 2 | 6 | 8 |
| Temp. °C | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 23 | 22 | 22 | 20 | 21 | 22 | 21 | 21 |
| Feels °C (?) | 21 | 22 | 23 | 23 | 24 | 25 | 25 | 24 | 23 | 23 | 22 | 21 | 21 | 21 | 20 | 19 | 19 | 17 | 17 | 14 | 15 | 17 | 16 | 17 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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