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Surf Forecasts:
Castles surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 2 pm Saturday 30 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
26.1° C
(Which is normal for this time of year)How big are the waves at Castles today (30 May):
- Afternoon surf: Afternoon surf (30 May, local time) - 2.5ft (0.8m), 14s period with SE swell.
- Evening surf: Evening surf (30 May, local time) - 6ft (1.9m), 13s period with SE swell.
The current surf forecast for Castles at 10PM is: 2.0m 13s primary swell from a Southeast direction and 0.4m 10s secondary swell from a North-northeast direction, 0.6m 6s secondary swell from a North-northeast direction (forecast issued at 02:00pm May 30). The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 May) | - | - |
| Afternoon (30 May) | 2.5ft (0.8m) | 14s |
| Evening (30 May) | 6ft (1.9m) | 13s |
Table - waves today at Castles. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 123mm), heaviest during Mon night. Warm (max 27°C on Sun afternoon, min 24°C on Sat afternoon). Winds increasing (light winds from the NE on Sat afternoon, extremely windy from the E by Mon afternoon). | ||||||||||||||||||||||||
Sat 30 | Sunday 31 | Monday 1 | Tue 2 | |||||||||||||||||||||
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 10 | SE 14 | SE 13 | SE 13 | SE 13 | SE 12 | SE 12 | SE 14 | SE 15 | SSE 15 | SSE 15 | SSE 16 | SSE 16 | SE 16 | SE 15 | SE 15 | SE 15 | SE 15 | SSE 14 | SSE 14 | S 13 | SSW 12 | SSE 13 | SE 12 | |
68 | 228 | 711 | 1228 | 1331 | 1010 | 1060 | 3735 | 5785 | 6807 | 8691 | 13349 | 20803 | 25777 | 27185 | 31639 | 40145 | 58594 | 63207 | 52240 | 30529 | 0 | 1674 | 373 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross | cross | cross-off | |
High Tide | 7:12PM1.80m | 6:12AM2.01m | 7:48PM1.81m | 6:43AM2.02m | 8:23PM1.79m | 7:14AM2.01m | ||||||||||||||||||
Low Tide | 12:31PM0.15m | 00:30AM0.95m | 1:06PM0.11m | 1:04AM0.98m | 1:40PM0.10m | 1:38AM1.00m | ||||||||||||||||||
 | | |  |  | |  | | |  |  |  | | | |  |  | | |  | |  | | | |
 | — | — | — | — | — | 5:37 | — | — | — | — | — | — | — | 5:37 | — | — | — | — | — | — | — | 5:37 | — | — |
 | — | — | 7:15 | — | — | — | — | — | — | — | 7:15 | — | — | — | — | — | — | — | 7:15 | — | — | — | — | 7:16 |
— | — | — | — | — | — | — | — | — | — | 1 | 1 | 2 | 5 | 5 | 12 | 6 | 4 | 14 | 43 | 12 | 4 | 10 | 3 | |
Temp °C | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 25 | 26 | 26 | 27 | 27 | 25 | 26 | 26 | 25 | 26 | 26 | 26 | 26 | 26 | 27 | 26 | 26 |
25 | 24 | 24 | 24 | 24 | 24 | 23 | 24 | 25 | 25 | 25 | 24 | 21 | 21 | 20 | 17 | 17 | 15 | 12 | 13 | 17 | 16 | 14 | 17 | |
Swell 1 Height (m) Direction Period (s) | E 10 | SE 14 | SE 13 | SE 13 | SE 13 | SE 12 | SE 12 | SE 14 | SE 15 | SSE 15 | SSE 15 | SSE 16 | SSE 16 | — | — | — | — | — | — | — | E 11 | — | SSE 13 | SE 12 |
 kJ | 68 | 228 | 711 | 1228 | 1331 | 1010 | 1060 | 3735 | 5785 | 6807 | 8691 | 13349 | 20803 | — | — | — | — | — | — | — | 1981 | — | 1674 | 373 |
Swell 2 Height (m) Direction Period (s) | SE 9 | E 10 | E 10 | NNE 10 | SSE 16 | SSE 16 | SSE 15 | E 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | ESE 10 | SSE 10 |
| kJ | 29 | 68 | 66 | 36 | 104 | 385 | 1037 | 80 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 506 | 282 |
Swell 3 Height (m) Direction Period (s) | SE 15 | SE 9 | ENE 8 | — | NE 12 | E 10 | E 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 34 | 27 | 14 | — | 21 | 73 | 72 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | N 6 | NE 3 | NNE 6 | NNE 6 | NNE 3 | ENE 4 | ENE 4 | ENE 11 | ENE 11 | ENE 6 | E 6 | E 7 | E 8 | SE 16 | SE 15 | SE 15 | SE 15 | SE 15 | SSE 14 | SSE 14 | S 13 | SSW 12 | SW 11 | WSW 10 |
| kJ | 15 | 2 | 19 | 29 | 10 | 18 | 33 | 12 | 12 | 138 | 339 | 570 | 1131 | 25777 | 27185 | 31639 | 40145 | 58594 | 63207 | 52240 | 30529 | 26298 | 11827 | 8299 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 687 | 31 | 28 | 17 | 28 | 31 | 31 | 31 | 687 | 838 | 838 | 1012 | 596 | 713 | 596 | 687 | 687 | 687 | 687 | 596 | 596 | 596 | 596 | 596 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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