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 2 pm Friday 12 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
24.8° C
(Which is slightly warmer than usual)How big are the waves at Castles today?
The current surf forecast for Castles at 6PM is: 2.0m 8s primary swell from a East-northeast direction and 0.1m 13s secondary swell from a East direction (forecast issued at 02:00pm December 12). An open ocean swell of 0.7m 8s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | - | - |
| Afternoon (12 Dec) | 7ft (2.1m) | 7s |
| Evening (12 Dec) | 6ft (1.9m) | 8s |
Table - waves today at Castles. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| 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 | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 6 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 7 | 8 | 10 | 9 | 9 | 9 | 9 | 9 | 12 | 9 | 11 | 11 | 11 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 307 | 408 | 464 | 406 | 310 | 298 | 284 | 163 | 203 | 99 | 108 | 104 | 235 | 83 | 81 | 149 | 119 | 80 | 52 | 59 | 121 | 88 | 94 | 98 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross | cross | 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- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 1:12PM 1.55 | 1:17AM 1.41 | 2:01PM 1.56 | 2:46AM 1.37 | 2:46PM 1.59 | 4:04AM 1.39 | ||||||||||||||||||
Low Tide / height (m) | 7:19PM 0.81 | 7:25AM 0.72 | 8:32PM 0.71 | 8:25AM 0.83 | 9:33PM 0.57 | |||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 7:05 | - | - | - | - | - | - | - | 7:07 | - | - | - | - | - | - | - | 7:07 |
| Sunset | - | 5:37 | - | - | - | - | - | - | - | 5:38 | - | - | - | - | - | - | - | 5:38 | - | - | - | - | - | - |
 | |  |  | | | |  |  | | | |  | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 22 | 21 | 21 | 22 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 21 | 20 | 20 | 18 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 |
| Feels °C (?) | 17 | 16 | 17 | 19 | 20 | 21 | 21 | 21 | 23 | 21 | 20 | 18 | 15 | 14 | 11 | 9 | 9 | 9 | 9 | 10 | 11 | 11 | 11 | 11 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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