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Surf Forecasts:
Castles surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 8 pm Monday 20 Apr 2026 JSTForecast update in hr min s Forecast update imminent
Castles surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Castles sea temperature is
24.3° C
(Which is normal for this time of year)How big are the waves at Castles today?
The current surf forecast for Castles at 1AM is: 1.4m 12s primary swell from a East direction and 0.3m 11s secondary swell from a Northeast direction (forecast issued at 08:00pm April 20). An open ocean swell of 0.7m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Apr) | 3.5ft (1.1m) | 12s |
| Afternoon (21 Apr) | 4ft (1.2m) | 12s |
| Evening (21 Apr) | 3.5ft (1.1m) | 12s |
Table - waves today at Castles. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Mon 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||||||||
| 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 746 | 620 | 594 | 505 | 409 | 339 | 333 | 384 | 390 | 330 | 319 | 307 | 247 | 242 | 238 | 233 | 180 | 139 | 136 | 136 | 133 | 133 | 104 | 104 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross- on | cross- on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross |
High Tide / height (m) | 9:34PM 1.80 | 8:44AM 1.98 | 10:29PM 1.64 | 9:24AM 1.87 | 11:37PM 1.50 | 10:13AM 1.73 | ||||||||||||||||||
Low Tide / height (m) | 3:03AM 0.80 | 3:45PM -0.01 | 3:44AM 0.94 | 4:39PM 0.15 | 4:34AM 1.06 | |||||||||||||||||||
Mon 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:01 | - | - | - | - | - | - | - | 6:00 | - | - | - | - | - | - | 5:58 | - | - | - |
| Sunset | 6:53 | - | - | - | - | - | - | - | 6:54 | - | - | - | - | - | - | - | 6:54 | - | - | - | - | - | - | - |
 |  |  |  | | | | |  | | | | | | | | | | | | | | |  | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 2 |
| Temp. °C | 22 | 21 | 21 | 21 | 21 | 22 | 22 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 25 |
| Feels °C (?) | 19 | 19 | 20 | 20 | 20 | 21 | 22 | 23 | 23 | 22 | 21 | 22 | 22 | 21 | 22 | 22 | 22 | 22 | 22 | 21 | 21 | 22 | 22 | 23 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Castles 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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