Nazare Big Wave Challenge Gets Yellow Alert, Could Run Saturday in Giant Waves
70-foot plus waves predicted for Portuguese big wave tow surfing competition.
Surf Forecasts:
Castles surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 8 pm Saturday 13 Dec 2025 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
24.7° C
(Which is slightly warmer than usual)How big are the waves at Castles today?
The current surf forecast for Castles at 1AM is: 0.8m 9s primary swell from a East-northeast direction and 0.9m 8s secondary swell from a East-southeast direction (forecast issued at 08:00pm December 13). An open ocean swell of 1.7m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Dec) | 3ft (0.9m) | 9s |
| Afternoon (14 Dec) | 2ft (0.6m) | 9s |
| Evening (14 Dec) | 2.5ft (0.7m) | 9s |
Table - waves today at Castles. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sat 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||||||||||
| 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |   |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 11 | 11 | 12 | 11 | 11 | 5 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 106 | 101 | 96 | 94 | 121 | 113 | 106 | 58 | 77 | 79 | 83 | 97 | 96 | 93 | 57 | 45 | 59 | 59 | 80 | 75 | 100 | 223 | 219 | 216 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 2:46AM 1.37 | 2:46PM 1.59 | 4:04AM 1.39 | 3:28PM 1.64 | 5:04AM 1.45 | |||||||||||||||||||
Low Tide / height (m) | 8:32PM 0.71 | 8:25AM 0.83 | 9:33PM 0.57 | 9:22AM 0.90 | 10:24PM 0.43 | 10:13AM 0.93 | ||||||||||||||||||
Sat 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 7:07 | - | - | - | - | - | - | - | 7:07 | - | - | - | - | - | - | - | 7:07 | - | - |
| Sunset | - | - | - | - | - | - | - | 5:38 | - | - | - | - | - | - | - | 5:38 | - | - | - | - | - | - | - | 5:39 |
 |  | |  | |  |  | | | |  | | |  | | | | | | | |  | | | |
Rain (mm) | - | - | - | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 23 | 22 | 21 | 19 | 18 | 16 | 17 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 |
| Feels °C (?) | 22 | 20 | 16 | 12 | 10 | 8 | 9 | 8 | 9 | 10 | 10 | 10 | 10 | 11 | 12 | 14 | 14 | 15 | 15 | 16 | 16 | 17 | 17 | 17 |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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