Surf Forecasts:
Castles surf forecast from 9 Nov 2026:
- Best quality surf: Friday 20 Nov, 12AM (local time) - 5ft (1.6m), 7s period, NE swell with cross-offshore winds.
- Most powerful swell: Monday 9 Nov, 9PM (local time) - 8ft (2.5m), 13s period, ESE swell with 2,258 kJ wave energy.
- Next surfable swell (1★+): Friday 20 Nov, 12AM (local time) - 5ft (1.6m), 7s period with NE 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 Friday (Nov 20) at 12AM. The primary swell is predicted to be 1.6m and 7s period with a secondary swell of 0.6m and 10s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Castles in the next 16 days are 2.5m 13s and forecast to arrive on Monday (Nov 09) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 8s period and expected on Tuesday (Nov 10) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Fri 20th Nov) | 5ft (1.6m) 7s |
| Best Surf | 12AM (Fri 20th Nov) | 5ft (1.6m) 7s |
| Most Powerful | 9PM (Mon 9th Nov) | 8ft (2.5m) 13s |
Table - best surf conditions forecast for Castles over the next 16 days.
Short Range ForecastLight rain (total 2mm), mostly falling on Mon afternoon. Warm (max 24°C on Sun night, min 20°C on Mon night). Winds increasing (light winds from the NE on Sun night, strong winds from the NNW by Mon night). | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Thu morning, min 23°C on Wed night). Mainly fresh winds. | ||||||||||||||||||
Monday 9 | Tuesday 10 | Wednesday 11 | Thursday 12 | Friday 13 | Saturday 14 | ||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | E 8 | E 9 | E 13 | ESE 13 | ESE 12 | E 11 | N 10 | NE 8 | ENE 10 | ENE 10 | ENE 10 | E 10 | E 9 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 409 | 429 | 1684 | 1872 | 944 | 396 | 1115 | 632 | 963 | 772 | 681 | 573 | 239 | 530 | 584 | 666 | 592 | 522 | 474 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | on |
High Tide | 7:09AM1.92m | 6:31PM2.05m | 7:48AM1.89m | 7:00PM2.05m | 8:26AM1.83m | 7:29PM2.02m | 9:02AM1.75m | 7:57PM1.96m | 9:39AM1.67m | 8:25PM1.89m | 10:17AM1.60m | 8:55PM1.80m | |||||||
Low Tide | 00:36AM0.10m | 12:44PM0.77m | 1:13AM0.04m | 1:17PM0.83m | 1:49AM0.04m | 1:49PM0.89m | 2:23AM0.08m | 2:20PM0.96m | 2:58AM0.16m | 2:51PM1.02m | 3:32AM0.26m | 3:24PM1.07m | |||||||
 |  |  |  | | |  | |  | | | | | | | | | | | |
 | — | 6:41 | — | — | 6:43 | — | — | 6:43 | — | — | 6:43 | — | — | 6:45 | — | — | 6:46 | — | — |
 | — | — | 5:43 | — | — | 5:42 | — | — | 5:42 | — | — | 5:40 | — | — | 5:40 | — | — | 5:39 | — |
mm | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 24 | 23 | 23 | 22 | 22 | 23 | 24 | 23 | 23 | 25 | 24 | 24 | 24 | 25 | 24 | 25 | 25 | 25 |
Feels °C | 22 | 22 | 20 | 17 | 15 | 15 | 16 | 19 | 17 | 18 | 21 | 21 | 22 | 24 | 25 | 22 | 23 | 23 | 24 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 9 | E 13 | ESE 13 | ESE 12 | E 11 | E 10 | NNW 9 | NNW 8 | NNW 8 | NNW 7 | E 10 | E 9 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 |
| kJ | 409 | 429 | 1684 | 1872 | 944 | 396 | 194 | 184 | 78 | 32 | 15 | 573 | 239 | 530 | 584 | 666 | 592 | 522 | 474 |
Swell 2 Height (m) Direction Period (s) | E 12 | ESE 16 | — | — | — | — | — | E 10 | ESE 9 | — | — | NE 10 | NE 11 | N 6 | — | E 12 | — | — | — |
| kJ | 47 | 50 | — | — | — | — | — | 65 | 16 | — | — | 44 | 163 | 2 | — | 184 | — | — | — |
Swell 3 Height (m) Direction Period (s) | NNW 7 | NNW 7 | — | — | — | — | — | — | — | — | — | NNW 7 | NNW 6 | NNW 6 | — | — | — | — | — |
| kJ | 18 | 5 | — | — | — | — | — | — | — | — | — | 9 | 4 | 3 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | N 7 | NNW 6 | NW 8 | NNW 11 | NNW 11 | N 10 | NE 8 | ENE 10 | ENE 10 | ENE 10 | — | — | — | — | — | — | — | — |
| kJ | — | 3 | 8 | 1003 | 2053 | 1835 | 1115 | 632 | 963 | 772 | 681 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 29 | 29 | 687 | 697 | 1012 | 805 | 687 | 29 | 1059 | 29 | 29 | 29 | 29 | 29 | 29 | 33 | 33 | 41 | 41 |
Best forecast wave conditions in Okinawa | |||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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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