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Surf Forecasts:
Castles surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 2 pm Tuesday 19 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 1.9°C colder than average for this time of year)How big are the waves at Castles today?
The current surf forecast for Castles at 10PM is: 1.5m 8s primary swell from a East direction and 1.0m 8s secondary swell from a East-northeast direction (forecast issued at 02:00pm May 19). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 May) | - | - |
| Afternoon (19 May) | 5.5ft (1.7m) | 8s |
| Evening (19 May) | 5ft (1.6m) | 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 Fri morning. Warm (max 26°C on Fri morning, min 23°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Tue 19 | Wednesday 20 | Thursday 21 | Fri 22 | |||||||||||||||||||||
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 | ESE 8 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | |
459 | 401 | 347 | 351 | 309 | 324 | 284 | 307 | 334 | 334 | 343 | 289 | 289 | 248 | 235 | 248 | 235 | 197 | 214 | 197 | 197 | 197 | 193 | 189 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross-off | cross | cross | |
High Tide | 9:35PM1.86m | 8:35AM2.06m | 10:29PM1.75m | 9:24AM1.94m | 11:29PM1.67m | |||||||||||||||||||
Low Tide | 2:49PM-0.12m | 2:55AM0.93m | 3:39PM0.01m | 3:44AM1.01m | 4:32PM0.18m | 4:43AM1.05m | ||||||||||||||||||
 | | |  | | | | | | | | | | | | | | |  |  | | | |  | |
 | — | — | — | — | — | 5:41 | — | — | — | — | — | — | — | 5:39 | — | — | — | — | — | — | — | 5:39 | — | — |
 | — | — | 7:09 | — | — | — | — | — | — | — | 7:09 | — | — | — | — | — | — | — | 7:10 | — | — | — | — | 7:10 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | |
Temp °C | 25 | 25 | 25 | 24 | 24 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 24 | 25 | 25 | 25 | 25 | 24 | 25 | 25 | 26 |
27 | 29 | 28 | 26 | 27 | 25 | 26 | 27 | 25 | 25 | 26 | 27 | 25 | 25 | 24 | 25 | 27 | 26 | 27 | 27 | 26 | 27 | 28 | 28 | |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ESE 8 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 |
 kJ | 459 | 401 | 347 | 351 | 309 | 324 | 284 | 307 | 334 | 334 | 343 | 289 | 289 | 248 | 235 | 248 | 235 | 197 | 214 | 197 | 197 | 197 | 193 | 189 |
Swell 2 Height (m) Direction Period (s) | — | — | — | ENE 8 | — | — | NE 8 | NE 8 | NE 8 | — | — | — | — | — | — | — | — | W 7 | NE 11 | E 11 | E 11 | E 11 | E 11 | E 10 |
| kJ | — | — | — | 143 | — | — | 17 | 17 | 17 | — | — | — | — | — | — | — | — | 8 | 5 | 2 | 2 | 2 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | W 7 | — | — | — | — | — | W 7 | — | — | W 6 | W 6 | W 7 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | 1 | — | — | 1 | 1 | 1 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SW 2 | WSW 3 | SW 3 | SW 3 | SW 3 | SSW 4 | WSW 4 | WSW 5 | SW 5 | WSW 7 | WSW 7 | WSW 7 | WSW 6 | WSW 6 | WSW 6 |
| kJ | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 3 | 5 | 9 | 11 | 22 | 30 | 47 | 60 | 64 | 66 | 53 | 38 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 32 | 0 | 0 | 0 | 0 | 0 | 0 | 16 | 16 | 50 | 16 | 48 | 48 | 16 | 16 | 94 | 94 | 94 | 16 | 16 | 16 | 16 | 16 | 16 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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