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Castles surfForecast / Okinawa / Japan
12 Day Weather and Surf, issued 2 pm Saturday 19 Jul 2025 JST
Best Forecast Surf Conditions for Castles this week:
The surf forecast for Castles over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Jul 24) at 9PM. The primary swell is predicted to be 6.0m and 14s period with a secondary swell of 2.0m and 10s. Another secondary swell of 0.7m and 11s is also forecast. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Castles in the next 12 days are 8.0m 13s and forecast to arrive on Friday (Jul 25) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.5m 12s period and expected on Saturday (Jul 26) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Thu 24th Jul) | 20ft (6.0m) 14s |
| Best Surf | 9PM (Thu 24th Jul) | 20ft (6.0m) 14s |
| Most Powerful | 9AM (Fri 25th Jul) | 26ft (8.0m) 13s |
Table - best surf conditions forecast for Castles over the next 12 days.
Short Range Forecast Light rain (total 8mm), mostly falling on Sat night. Warm (max 29°C on Sat afternoon, min 28°C on Sat night). Mainly strong winds. | Days 3-6 Weather Summary Heavy rain (total 46mm), heaviest during Wed afternoon. Warm (max 29°C on Thu morning, min 27°C on Tue night). Winds decreasing (gales from the NE on Wed afternoon, fresh winds from the S by Thu afternoon). | ||||||||||||||||||||||
Sat 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | |||||||||||||||||
| PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |||
Rating (10 max) | |||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 10 | 9 | 10 | 10 | 9 | 8 | 8 | 8 | 8 | 8 | 11 | 12 | 12 | 13 | 13 | 13 | 13 | 10 | 9 | ||
Wave (?)Graph  | |||||||||||||||||||||||
| Energy (?) | 1846 | 1455 | 1484 | 1547 | 1751 | 1111 | 980 | 827 | 801 | 825 | 933 | 1320 | 3297 | 11145 | 7671 | 7568 | 18323 | 21110 | 13972 | 574 | 266 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross | cross- on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | ||
High Tide / height (m) | 1:19AM 1.91 | 3:41PM 1.61 | 2:28AM 1.94 | 5:07PM 1.70 | 3:42AM 2.00 | 6:08PM 1.80 | 4:49AM 2.09 | 6:55PM 1.90 | 5:48AM 2.18 | 7:35PM 1.97 | 6:41AM 2.24 | 8:12PM 2.02 | 7:29AM 2.26 | ||||||||||
Low Tide / height (m) | 7:13PM 1.14 | 8:41AM 0.56 | 8:32PM 1.25 | 9:58AM 0.44 | 9:57PM 1.28 | 11:04AM 0.29 | 11:07PM 1.22 | 12:00PM 0.17 | 12:04AM 1.13 | 12:49PM 0.10 | 12:54AM 1.01 | 1:33PM 0.08 | 1:38AM 0.91 | ||||||||||
Sat 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | |||||||||||||||||
| Sunrise | - | - | 5:48 | - | - | 5:48 | - | - | 5:48 | - | - | 5:50 | - | - | 5:50 | - | - | 5:50 | - | - | 5:50 | ||
| Sunset | 7:22 | - | - | 7:22 | - | - | 7:21 | - | - | 7:21 | - | - | 7:21 | - | - | 7:20 | - | - | 7:20 | - | - | ||
 |  |  | |  | |  |  | | | | | | | | | | | | | | |||
Rain (mm) | - | 1 | 2 | 1 | 2 | 2 | - | - | - | - | 2 | 5 | 8 | 15 | 5 | 6 | 2 | 3 | 1 | 2 | 7 | ||
| Temp. °C | 29 | 28 | 28 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 29 | 29 | 29 | 29 | 30 | 29 | 29 | ||
| Feels °C (?) | 29 | 28 | 27 | 29 | 28 | 27 | 27 | 27 | 26 | 26 | 27 | 23 | 25 | 25 | 29 | 30 | 27 | 28 | 30 | 31 | 32 | ||
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Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Okinawa
The wind is still cross-on at Castles (fresh winds from the ESE at Naha Airport 11 km from Castles). 2.1m 9s swell from the SE with a 1.7m 10s swell from the S. Swells combining to make to make bigger set waves.
2 h 0 min ago
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.
Information about the Castles Surf forecast
The above surf forecast table for Castles provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Castles can be found by selecting the local surf guide option on the grey menu. Our Castles surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Castles) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Castles may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Castles is 6 km (4 miles) from the city of Itoman. If you plan a holiday in Okinawa, look for hotels and other accommodation in Itoman. Itoman has rooms for a wide range of budgets as well as car hire and transport links.
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