Surf Forecasts:
Castles surf forecast from 23 Jun 2026:
- Best quality surf: Thursday 25 Jun, 9PM (local time) - 20ft (6.0m), 14s period, S swell with onshore winds.
- Most powerful swell: Friday 26 Jun, 3AM (local time) - 21ft (6.5m), 13s period, S swell with 14,270 kJ wave energy.
- Next surfable swell (1★+): Thursday 25 Jun, 9PM (local time) - 20ft (6.0m), 14s period with S 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 Thursday (Jun 25) at 9PM. The primary swell is predicted to be 6.0m and 14s period with a secondary swell of 6.0m and 14s. Another secondary swell of 0.3m and 10s is also forecast. The wind is predicted to be onshore as the swell arrives.
The most powerful waves expected at Castles in the next 16 days are 6.5m 13s and forecast to arrive on Friday (Jun 26) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 5.0m 15s period and expected on Thursday (Jun 25) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Thu 25th Jun) | 20ft (6.0m) 14s |
| Best Surf | 9PM (Thu 25th Jun) | 20ft (6.0m) 14s |
| Most Powerful | 3AM (Fri 26th Jun) | 21ft (6.5m) 13s |
Table - best surf conditions forecast for Castles over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 10mm), heaviest on Thu night. Warm (max 28°C on Tue morning, min 27°C on Tue night). Winds increasing (light winds from the SSE on Tue afternoon, gales from the E by Thu night). | Days 4-6 Weather SummaryHeavy rain (total 23mm), heaviest during Sat night. Warm (max 28°C on Sun morning, min 26°C on Fri night). Winds decreasing (near gales from the NNW on Fri morning, calm by Sat night). | ||||||||||||||||||||
Tuesday 23 | Wednesday 24 | Thursday 25 | Friday 26 | Saturday 27 | Sunday 28 | Monday 29 | |||||||||||||||
AM | PM | 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) | SSE 11 | SSE 13 | S 14 | S 14 | SE 11 | SE 11 | SE 11 | NE 10 | S 13 | S 13 | ESE 9 | S 8 | ESE 10 | S 7 | ESE 9 | ESE 8 | S 6 | ESE 8 | SSW 6 | SSW 6 | ESE 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 732 | 1497 | 2765 | 4569 | 31 | 30 | 30 | 16 | 12303 | 12154 | 961 | 104 | 38 | 85 | 53 | 46 | 45 | 48 | 65 | 71 | 45 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | on | cross-on | on | on | on | on | cross-off | off | off | off | off | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on |
High Tide | 2:10PM1.55m | 2:07AM1.77m | 3:37PM1.54m | 2:55AM1.80m | 4:49PM1.59m | 3:41AM1.85m | 5:45PM1.65m | 4:26AM1.91m | 6:29PM1.72m | 5:07AM1.96m | 7:06PM1.78m | 5:47AM2.01m | 7:40PM1.83m | ||||||||
Low Tide | 7:46PM0.99m | 9:00AM0.71m | 8:48PM1.10m | 10:00AM0.59m | 9:48PM1.16m | 10:50AM0.47m | 10:41PM1.18m | 11:34AM0.37m | 11:28PM1.17m | 12:13PM0.28m | 00:10AM1.14m | 12:50PM0.21m | 00:49AM1.11m | ||||||||
 | |  |  | |  | |  |  |  | | | |  |  | | | | | | | |
 | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:39 | — | — | 5:39 | — | — | 5:39 | — | — |
 | — | 7:23 | — | — | 7:23 | — | — | 7:23 | — | — | 7:23 | — | — | 7:24 | — | — | 7:24 | — | — | 7:24 | — |
mm | — | — | 1 | 1 | — | — | — | 2 | 6 | 2 | 2 | 3 | 1 | — | 4 | 6 | 4 | 1 | 1 | — | 1 |
Temp °C | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 27 | 27 | 28 | 28 | 27 |
Feels °C | 31 | 31 | 32 | 29 | 29 | 28 | 26 | 26 | 23 | 22 | 25 | 28 | 31 | 30 | 30 | 29 | 28 | 30 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | SSE 11 | SSE 13 | S 14 | S 14 | S 14 | SSW 14 | SSW 14 | SSW 14 | S 13 | S 13 | ESE 9 | SW 9 | SSW 8 | SW 8 | SSW 7 | SW 8 | SW 7 | SW 6 | ESE 9 | ESE 8 | WSW 7 |
| kJ | 732 | 1497 | 2765 | 4569 | 5318 | 7664 | 9095 | 9612 | 12303 | 12154 | 961 | 123 | 209 | 112 | 147 | 94 | 77 | 49 | 52 | 22 | 36 |
Swell 2 Height (m) Direction Period (s) | E 9 | E 8 | SE 12 | ESE 12 | SE 11 | SE 11 | SE 11 | NE 10 | NE 10 | — | S 11 | S 8 | ESE 10 | S 7 | ESE 9 | SSE 6 | S 6 | ESE 8 | SW 7 | SE 9 | ESE 9 |
| kJ | 13 | 20 | 35 | 53 | 31 | 30 | 30 | 16 | 26 | — | 815 | 104 | 38 | 85 | 53 | 41 | 43 | 48 | 17 | 22 | 45 |
Swell 3 Height (m) Direction Period (s) | ENE 10 | NE 10 | NE 12 | NE 11 | NE 10 | NE 10 | — | — | — | — | E 18 | NE 7 | NE 7 | NW 7 | NNW 6 | ESE 8 | ESE 8 | E 16 | ESE 15 | ESE 15 | ESE 15 |
| kJ | 10 | 16 | 21 | 29 | 16 | 15 | — | — | — | — | 6 | 54 | 18 | 44 | 14 | 46 | 45 | 20 | 21 | 21 | 21 |
Wind waves Height (m) Direction Period (s) | — | — | SE 8 | SE 7 | — | — | — | — | — | ESE 9 | NNW 6 | WNW 6 | NW 7 | — | — | — | — | SSE 6 | SSW 6 | SSW 6 | S 6 |
| kJ | — | — | 129 | 104 | — | — | — | — | — | 2151 | 554 | 136 | 67 | — | — | — | — | 31 | 65 | 71 | 31 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 588 | 28 | 588 | 697 | 687 | 605 | 596 | 596 | 713 | 596 | 687 | 0 | 0 | 0 | 16 | 28 | 806 | 688 | 596 | 106 | 28 |
Best forecast wave conditions in Okinawa | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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