Surf Forecasts:
Castles surf forecast from 10 Jul 2026:
- Best quality surf: Saturday 11 Jul, 12AM (local time) - 44ft (13.5m), 17s period, SE swell with cross-onshore winds.
- Most powerful swell: Saturday 11 Jul, 6AM (local time) - 48ft (14.5m), 18s period, SSE swell with 132,072 kJ wave energy.
- Next surfable swell (1★+): Saturday 11 Jul, 12AM (local time) - 44ft (13.5m), 17s period with SE swell.
Best Forecast Surf Conditions for Castles this week:
The surf forecast for Castles over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Jul 11) at 12AM. The primary swell is predicted to be 13.5m and 17s period. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Castles in the next 16 days are 14.5m 18s and forecast to arrive on Saturday (Jul 11) at 6AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.5m 13s period and expected on Sunday (Jul 12) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sat 11th Jul) | 44ft (13.5m) 17s |
| Best Surf | 12AM (Sat 11th Jul) | 44ft (13.5m) 17s |
| Most Powerful | 6AM (Sat 11th Jul) | 48ft (14.5m) 18s |
Table - best surf conditions forecast for Castles over the next 16 days.
Short Range ForecastHeavy rain (total 39mm), heaviest during Fri night. Warm (max 29°C on Sat afternoon, min 27°C on Fri night). Winds decreasing (stormy winds from the ESE on Fri night, moderate winds from the SSE by Mon afternoon). | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Tue afternoon. Warm (max 29°C on Mon night, min 28°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Fri 17 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SE 17 | SSE 17 | S 16 | SSE 12 | SSE 11 | SSE 11 | SSE 10 | SSE 9 | SSE 9 | SSE 9 | S 8 | S 8 | S 7 | S 7 | S 7 | S 7 | S 8 | S 7 | S 7 | ENE 10 | ENE 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 106292 | 124481 | 55328 | 7744 | 3479 | 2555 | 1270 | 808 | 537 | 371 | 381 | 289 | 120 | 127 | 107 | 108 | 90 | 70 | 33 | 31 | 28 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | on | cross-on | cross-on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross-on | glassy | on |
High Tide | 2:51AM1.98m | 5:09PM1.73m | 3:59AM2.07m | 6:10PM1.85m | 5:02AM2.16m | 7:01PM1.95m | 6:00AM2.25m | 7:45PM2.02m | 6:55AM2.31m | 8:26PM2.06m | 7:46AM2.31m | 9:05PM2.06m | 8:35AM2.26m | ||||||||
Low Tide | 10:12AM0.36m | 10:12PM1.19m | 11:15AM0.20m | 11:19PM1.14m | 12:10PM0.07m | 00:16AM1.06m | 1:01PM-0.01m | 1:06AM0.96m | 1:47PM-0.02m | 1:54AM0.87m | 2:31PM0.04m | 2:40AM0.79m | 3:13PM0.17m | ||||||||
 |  | | | |  |  |  | |  | | | | | | | | | | | | |
 | — | 5:43 | — | — | 5:43 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — |
 | 7:23 | — | 7:23 | — | — | 7:23 | — | — | 7:23 | — | — | 7:23 | — | — | 7:22 | — | — | 7:22 | — | — | 7:22 |
mm | 18 | 11 | 4 | 1 | 2 | — | 3 | — | — | — | — | 1 | 1 | — | 1 | — | — | 1 | 1 | 2 | 1 |
Temp °C | 28 | 27 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 29 | 29 | 29 | 29 | 29 |
Feels °C | 18 | 16 | 23 | 24 | 28 | 29 | 30 | 30 | 30 | 31 | 31 | 32 | 33 | 32 | 32 | 32 | 34 | 33 | 33 | 34 | 33 |
Swell 1 Height (m) Direction Period (s) | — | — | — | SW 13 | SW 13 | SW 12 | SW 10 | SW 9 | SSW 9 | SSW 9 | SW 10 | SW 9 | SW 8 | SW 10 | S 7 | SW 10 | S 8 | S 7 | SW 9 | SW 9 | SW 8 |
| kJ | — | — | — | 5517 | 4020 | 1683 | 490 | 194 | 255 | 165 | 74 | 70 | 65 | 110 | 107 | 110 | 90 | 70 | 159 | 164 | 120 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | W 12 | W 12 | W 10 | SSW 10 | SW 9 | SW 9 | ENE 9 | ENE 9 | SW 10 | ENE 9 | SW 10 | ENE 9 | SW 10 | SW 9 | S 7 | S 6 | S 7 |
| kJ | — | — | — | — | 175 | 268 | 136 | 116 | 99 | 93 | 17 | 28 | 74 | 28 | 137 | 28 | 110 | 97 | 33 | 22 | 23 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | SE 13 | W 9 | W 8 | E 9 | SE 12 | SE 12 | ENE 9 | SSW 8 | ENE 9 | SE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 9 |
| kJ | — | — | — | — | — | — | 7 | 24 | 12 | 15 | 22 | 22 | 28 | 13 | 28 | 18 | 31 | 31 | 31 | 31 | 28 |
Wind waves Height (m) Direction Period (s) | SE 17 | SSE 17 | S 16 | SSE 12 | SSE 11 | SSE 11 | SSE 10 | SSE 9 | SSE 9 | SSE 9 | S 8 | S 8 | S 7 | S 7 | — | S 7 | — | — | — | — | — |
| kJ | 106292 | 124481 | 55328 | 7744 | 3479 | 2555 | 1270 | 808 | 537 | 371 | 381 | 289 | 120 | 127 | — | 108 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 687 | 713 | 1029 | 596 | 596 | 605 | 612 | 697 | 612 | 612 | 588 | 852 | 28 | 106 | 106 | 106 | 28 | 28 | 28 | 0 | 28 |
Best forecast wave conditions in Okinawa | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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 16 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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