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Surf Forecasts:
Castles surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 2 am Friday 15 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
24.2° C
(Which is 1.2°C colder than average for this time of year)How big are the waves at Castles today?
The current surf forecast for Castles at 6AM is: 1.3m 9s primary swell from a East direction and 0.2m 6s secondary swell from a South-southeast direction, 0.1m 12s secondary swell from a Southeast direction (forecast issued at 02:00am May 15). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 May) | 4.5ft (1.3m) | 5s |
| Afternoon (15 May) | 5ft (1.6m) | 6s |
| Evening (15 May) | 5.5ft (1.7m) | 7s |
Table - waves today at Castles. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 23°C on Fri morning, min 21°C on Sat night). Mainly fresh winds. | ||||||||||||||||||||||||
Friday 15 | Saturday 16 | Sunday 17 | ||||||||||||||||||||||
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 | 12 PM | 3 PM | 6 PM | 9 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
ESE 9 | E 9 | E 9 | E 5 | E 6 | E 6 | E 6 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 9 | E 8 | E 8 | E 8 | E 8 | |
88 | 127 | 280 | 90 | 158 | 184 | 206 | 248 | 278 | 303 | 324 | 333 | 434 | 504 | 567 | 652 | 699 | 733 | 687 | 708 | 691 | 612 | 597 | 597 | |
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 | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | |
High Tide | 5:08AM2.00m | 6:15PM1.98m | 5:48AM2.10m | 7:05PM2.02m | 6:28AM2.16m | 7:54PM2.01m | ||||||||||||||||||
Low Tide | 11:15PM0.64m | 11:45AM0.06m | 00:01AM0.66m | 12:30PM-0.10m | 00:44AM0.71m | 1:16PM-0.18m | ||||||||||||||||||
 | |  | | |  |  |  | | | | | | | | | |  | | | | | | | |
 | — | 5:43 | — | — | — | — | — | — | — | 5:43 | — | — | — | — | — | — | — | 5:41 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — | — | 7:08 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 23 | 23 | 23 | 23 | 22 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 22 | 22 | 22 | 21 | 22 | 22 | 23 | 23 | 23 |
22 | 21 | 21 | 21 | 18 | 19 | 20 | 19 | 18 | 19 | 19 | 18 | 20 | 19 | 19 | 18 | 18 | 18 | 16 | 18 | 17 | 19 | 20 | 20 | |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 9 | SSE 6 | ESE 9 | SE 12 | E 10 | E 10 | E 10 | ESE 10 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | SE 14 | SE 14 | ESE 14 | ESE 14 | ESE 14 | ESE 14 | ESE 14 | SE 13 | SE 14 | ESE 13 | SE 12 |
 kJ | 88 | 90 | 4 | 66 | 6 | 47 | 52 | 47 | 35 | 23 | 22 | 23 | 12 | 8 | 8 | 19 | 18 | 18 | 18 | 18 | 7 | 7 | 17 | 24 |
Swell 2 Height (m) Direction Period (s) | ENE 9 | SSE 6 | SE 12 | SE 12 | S 6 | ESE 11 | SE 12 | SE 11 | SE 11 | ESE 11 | ESE 11 | ESE 11 | SE 15 | SE 10 | SE 10 | — | — | — | — | — | — | — | — | — |
| kJ | 32 | 4 | 6 | 6 | 3 | 13 | 5 | 5 | 19 | 12 | 12 | 12 | 8 | 4 | 4 | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | SSE 7 | SE 12 | ENE 12 | S 6 | SE 16 | S 6 | S 6 | S 6 | SE 15 | SE 15 | SE 15 | SE 15 | — | N 8 | N 7 | — | — | — | — | — | — | — | — | — |
| kJ | 4 | 6 | 14 | 3 | 10 | 3 | 1 | 1 | 9 | 9 | 9 | 8 | — | 1 | 1 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | E 4 | E 9 | E 9 | E 5 | E 6 | E 6 | E 6 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 9 | E 8 | E 8 | E 8 | E 8 |
| kJ | 10 | 127 | 280 | 90 | 158 | 184 | 206 | 248 | 278 | 303 | 324 | 333 | 434 | 504 | 567 | 652 | 699 | 733 | 687 | 708 | 691 | 612 | 597 | 597 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 596 | 588 | 29 | 687 | 1098 | 687 | 687 | 29 | 687 | 29 | 29 | 687 | 687 | 1049 | 687 | 687 | 607 | 29 | 29 | 687 | 687 | 687 | 687 | 687 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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