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Surf Forecasts:
Castles surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 2 pm Sunday 17 May 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
24.1° C
(Which is 1.5°C colder than average for this time of year)How big are the waves at Castles today?
The current surf forecast for Castles at 9PM is: 2.1m 8s primary swell from a East direction and 0.2m 13s secondary swell from a East-southeast direction (forecast issued at 02:00pm May 17). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | - | - |
| Afternoon (17 May) | 7ft (2.1m) | 8s |
| Evening (17 May) | 7ft (2.1m) | 8s |
Table - waves today at Castles. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 2mm), mostly falling on Tue morning. Warm (max 24°C on Tue morning, min 21°C on Sun night). Mainly fresh winds. | ||||||||||||||||||||||||
Sun 17 | Monday 18 | Tuesday 19 | Wed 20 | |||||||||||||||||||||
12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | ESE 9 | ESE 9 | |
616 | 616 | 555 | 612 | 612 | 625 | 640 | 654 | 654 | 594 | 715 | 595 | 595 | 567 | 656 | 575 | 450 | 371 | 399 | 364 | 364 | 318 | 318 | 270 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | |
High Tide | 7:54PM2.01m | 7:09AM2.18m | 8:43PM1.95m | 7:51AM2.14m | 9:35PM1.86m | 8:35AM2.06m | ||||||||||||||||||
Low Tide | 1:16PM-0.18m | 1:27AM0.78m | 2:02PM-0.19m | 2:10AM0.85m | 2:49PM-0.12m | 2:55AM0.93m | ||||||||||||||||||
 | | |  | |  | |  |  | | | | |  | |  | | | | | | | | | |
 | — | — | — | — | — | 5:41 | — | — | — | — | — | — | — | 5:41 | — | — | — | — | — | — | — | 5:41 | — | — |
 | — | — | 7:08 | — | — | — | — | — | — | — | 7:08 | — | — | — | — | — | — | — | 7:09 | — | — | — | — | 7:09 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | |
Temp °C | 22 | 23 | 22 | 22 | 22 | 22 | 21 | 22 | 22 | 23 | 22 | 22 | 22 | 22 | 23 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 22 | 23 |
17 | 19 | 19 | 19 | 19 | 19 | 17 | 19 | 19 | 21 | 20 | 22 | 23 | 21 | 23 | 24 | 23 | 23 | 23 | 23 | 23 | 24 | 21 | 23 | |
Swell 1 Height (m) Direction Period (s) | SE 13 | SE 14 | SE 13 | ESE 13 | ESE 13 | SE 12 | SE 12 | — | — | — | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | ESE 9 | ESE 9 |
 kJ | 7 | 7 | 7 | 16 | 16 | 23 | 6 | — | — | — | 715 | 595 | 595 | 567 | 656 | 575 | 450 | 371 | 399 | 364 | 364 | 318 | 318 | 270 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | ENE 9 | WNW 4 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 53 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WNW 4 | WNW 4 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 |
Wind waves Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 9 | E 9 | E 9 | E 9 | E 9 | — | — | — | NW 3 | WNW 3 | W 4 | W 4 | W 4 | W 4 | W 4 | W 4 | WSW 3 | SW 3 |
| kJ | 616 | 616 | 555 | 612 | 612 | 625 | 640 | 654 | 654 | 594 | 594 | — | — | — | 3 | 3 | 9 | 15 | 10 | 7 | 4 | 4 | 3 | 2 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 1080 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 0 | 0 | 0 | 16 | 16 | 48 | 16 | 48 | 16 | 16 | 16 | 16 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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