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Surf Forecasts:
Castles surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 8 pm Thursday 21 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 1.6°C colder than average for this time of year)How big are the waves at Castles today?
The current surf forecast for Castles at 12AM is: 1.0m 10s primary swell from a East-southeast direction (forecast issued at 08:00pm May 21). An open ocean swell of 0.1m 7s is not directed at the surf break, a second open ocean swell of 0.7m 6s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (22 May) | 3.5ft (1.0m) | 9s |
| Afternoon (22 May) | 3ft (0.9m) | 9s |
| Evening (22 May) | 3ft (0.9m) | 9s |
Table - waves today at Castles. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 29mm), heaviest during Fri night. Warm (max 27°C on Sat night, min 24°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Thu 21 | Friday 22 | Saturday 23 | Sunday 24 | |||||||||||||||||||||
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 | 12 PM | 3 PM | |
Swell Height Map |   |    |    |    | ||||||||||||||||||||
ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 9 | ESE 9 | |
197 | 197 | 197 | 197 | 193 | 189 | 156 | 153 | 153 | 153 | 153 | 153 | 153 | 153 | 153 | 149 | 113 | 113 | 113 | 113 | 118 | 120 | 118 | 124 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross | cross | cross | cross | cross-off | cross | cross | cross | cross | cross-off | cross-on | cross-on | cross | cross | cross-off | cross-off | cross-off | cross | cross | cross-off | cross | cross | |
High Tide | 11:29PM1.67m | 10:21AM1.79m | 00:33AM1.61m | 11:37AM1.65m | 1:37AM1.60m | 1:14PM1.56m | ||||||||||||||||||
Low Tide | 4:32PM0.18m | 4:43AM1.05m | 5:31PM0.37m | 5:55AM1.06m | 6:37PM0.55m | 7:21AM0.99m | ||||||||||||||||||
 |  |  |  |  |  |  | | |  |  | |  | | | | | | | | |  |  | | |
 | — | — | — | 5:39 | — | — | — | — | — | — | — | 5:39 | — | — | — | — | — | — | — | 5:39 | — | — | — | — |
 | 7:10 | — | — | — | — | — | — | — | 7:10 | — | — | — | — | — | — | — | 7:12 | — | — | — | — | — | — | 7:12 |
— | — | — | — | 1 | 1 | 1 | 1 | 3 | 2 | 1 | 4 | 7 | 1 | 3 | 2 | 1 | — | — | — | 1 | — | — | — | |
Temp °C | 25 | 25 | 24 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 25 | 24 | 24 | 24 | 24 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 27 |
27 | 27 | 26 | 27 | 27 | 27 | 28 | 28 | 25 | 26 | 26 | 27 | 26 | 25 | 25 | 27 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | |
Swell 1 Height (m) Direction Period (s) | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | WSW 6 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 9 | ESE 9 |
 kJ | 197 | 197 | 197 | 197 | 193 | 189 | 156 | 153 | 153 | 153 | 153 | 153 | 55 | 153 | 153 | 149 | 113 | 113 | 113 | 113 | 118 | 120 | 118 | 124 |
Swell 2 Height (m) Direction Period (s) | NE 11 | W 6 | W 7 | E 11 | E 11 | E 10 | E 10 | E 10 | WSW 5 | W 5 | E 10 | E 9 | ESE 9 | WSW 6 | NW 6 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | N 7 | W 6 | W 8 |
| kJ | 5 | 27 | 1 | 2 | 2 | 2 | 2 | 2 | 20 | 13 | 2 | 2 | 153 | 31 | 2 | 6 | 6 | 5 | 5 | 5 | 4 | 4 | 18 | 42 |
Swell 3 Height (m) Direction Period (s) | W 6 | E 11 | E 11 | — | W 7 | W 7 | W 6 | NE 10 | E 10 | E 10 | NE 10 | — | — | N 6 | N 6 | WNW 6 | — | — | N 8 | N 8 | N 8 | NNW 7 | N 7 | ENE 11 |
| kJ | 1 | 2 | 2 | — | 1 | 1 | 1 | 4 | 2 | 2 | 4 | — | — | 1 | 1 | 4 | — | — | 1 | 1 | 1 | 4 | 4 | 11 |
Wind waves Height (m) Direction Period (s) | WSW 5 | — | W 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 5 | — | SSW 3 | WSW 4 | WSW 5 | — | — | WSW 5 | WSW 4 | WSW 5 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | SW 4 | SW 6 |
| kJ | 20 | — | 41 | 43 | 44 | 30 | 27 | 23 | — | 2 | 18 | 64 | — | — | 26 | 31 | 74 | 104 | 77 | 62 | 48 | 50 | 9 | 19 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 16 | 16 | 16 | 16 | 16 | 16 | 0 | 16 | 50 | 94 | 94 | 0 | 16 | 65 | 48 | 48 | 16 | 0 | 0 | 16 | 16 | 0 | 16 | 16 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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