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Surf Forecasts:
Castles surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 8 am Sunday 10 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
23.8° 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 11AM is: 1.8m 9s primary swell from a East direction and 0.1m 15s secondary swell from a Southeast direction (forecast issued at 08:00am May 10). An open ocean swell of 0.3m 7s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (10 May) | 6ft (1.8m) | 9s |
| Afternoon (10 May) | 6ft (1.9m) | 9s |
| Evening (10 May) | 6.5ft (2.0m) | 8s |
Table - waves today at Castles. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 52mm), heaviest during Mon night. Warm (max 23°C on Mon afternoon, min 20°C on Sun morning). Mainly fresh winds. | ||||||||||||||||||||||||
Sunday 10 | Monday 11 | Tuesday 12 | Wed 13 | |||||||||||||||||||||
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 | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
E 9 | E 9 | E 9 | E 9 | E 9 | 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 | ESE 10 | |
487 | 509 | 586 | 575 | 550 | 546 | 559 | 524 | 494 | 452 | 404 | 422 | 372 | 422 | 473 | 506 | 442 | 402 | 355 | 348 | 318 | 281 | 287 | 271 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross | cross-on | on | on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 12:06PM1.52m | 2:09AM1.53m | 1:52PM1.52m | 3:01AM1.63m | 3:19PM1.62m | |||||||||||||||||||
Low Tide | 6:35AM1.08m | 7:15PM0.62m | 8:04AM0.95m | 8:28PM0.65m | 9:14AM0.75m | 9:32PM0.64m | ||||||||||||||||||
 | | | |  |  | | | | | |  | |  |  | | | | | | | | | | |
 | 5:46 | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:43 |
 | — | — | — | — | 7:05 | — | — | — | — | — | — | — | 7:05 | — | — | — | — | — | — | — | 7:06 | — | — | 7:06 |
1 | 1 | 4 | 3 | — | — | — | — | 2 | 3 | 2 | 2 | 3 | 9 | 2 | 3 | 3 | 5 | 4 | 2 | 1 | 1 | 1 | 1 | |
Temp °C | 21 | 21 | 20 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 |
20 | 19 | 17 | 19 | 19 | 19 | 20 | 21 | 22 | 22 | 22 | 23 | 25 | 22 | 19 | 21 | 23 | 25 | 26 | 25 | 25 | 24 | 23 | 23 | |
Swell 1 Height (m) Direction Period (s) | NNW 7 | NNW 7 | NNW 7 | N 6 | SE 13 | SE 13 | SE 13 | SE 12 | SE 12 | E 9 | SE 11 | SE 11 | SE 10 | SE 10 | SE 9 | SE 9 | SE 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | ESE 10 |
 kJ | 10 | 15 | 9 | 7 | 28 | 27 | 40 | 52 | 51 | 452 | 43 | 30 | 37 | 24 | 13 | 3 | 3 | 402 | 355 | 348 | 318 | 281 | 287 | 271 |
Swell 2 Height (m) Direction Period (s) | N 7 | — | SE 15 | SE 15 | N 6 | N 6 | N 6 | N 6 | N 6 | SE 12 | N 6 | N 6 | N 6 | N 6 | N 5 | SSE 10 | SSE 9 | — | — | S 11 | SE 8 | SE 8 | SSE 8 | SSE 8 |
| kJ | 8 | — | 8 | 8 | 3 | 3 | 3 | 1 | 1 | 36 | 1 | 1 | 1 | 1 | 1 | 10 | 8 | — | — | 2 | 11 | 11 | 7 | 7 |
Swell 3 Height (m) Direction Period (s) | N 7 | — | — | — | — | — | — | — | N 6 | N 6 | — | — | — | — | — | SE 9 | — | — | — | — | S 11 | S 11 | SE 10 | S 10 |
| kJ | 9 | — | — | — | — | — | — | — | 3 | 1 | — | — | — | — | — | 3 | — | — | — | — | 2 | 2 | 4 | 2 |
Wind waves Height (m) Direction Period (s) | E 9 | E 9 | E 9 | E 9 | E 9 | E 8 | E 8 | E 8 | E 9 | — | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | — | — | — | — | SSW 3 | SSW 4 | SW 4 |
| kJ | 487 | 509 | 586 | 575 | 550 | 546 | 559 | 524 | 494 | — | 404 | 422 | 372 | 422 | 473 | 506 | 442 | — | — | — | — | 4 | 11 | 12 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 32 | 29 | 29 | 29 | 733 | 607 | 92 | 588 | 588 | 588 | 67 | 596 | 596 | 596 | 588 | 42 | 41 | 596 | 16 | 0 | 0 | 16 | 16 | 48 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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