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:
Yona Bay surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 8 pm Thursday 11 Dec 2025 JSTForecast update in hr min s Forecast update imminent
Yona Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Yona Bay sea temperature is
24.2° C
(Which is normal for this time of year)How big are the waves at Yona Bay today?
The current surf forecast for Yona Bay at 12AM is: 1.8m 6s primary swell from a North-northeast direction (forecast issued at 08:00pm December 11). An open ocean swell of 0.9m 10s 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) | - | - |
| Evening (12 Dec) | 4.5ft (1.4m) | 5s |
Table - waves today at Yona Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thu 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||||||||
| 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) (?) | 6 | 5 | 6 | 6 | 6 | 6 | 7 | 7 | 8 | 7 | 7 | 8 | 8 | 8 | 8 | 9 | 8 | 6 | 7 | 8 | 8 | 9 | 9 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 6 | 91 | 233 | 219 | 183 | 266 | 436 | 472 | 300 | 243 | 392 | 255 | 255 | 191 | 169 | 144 | 202 | 201 | 352 | 640 | 960 | 1217 | 1318 | 1361 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross | cross | cross | cross | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross | cross- on | on | on | on | on | on | on | on | cross- on | cross- on | cross- on |
High Tide / height (m) | 11:45PM 1.38 | 1:11PM 1.49 | 1:12AM 1.27 | 2:06PM 1.49 | 2:48AM 1.24 | 2:58PM 1.51 | ||||||||||||||||||
Low Tide / height (m) | 6:12PM 0.82 | 6:22AM 0.50 | 7:30PM 0.77 | 7:23AM 0.64 | 8:46PM 0.67 | 8:29AM 0.75 | ||||||||||||||||||
Thu 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 7:05 | - | - | - | - | - | - | - | 7:05 | - | - | - | - | - | - | - | 7:05 | - | - |
| Sunset | - | - | - | - | - | - | - | 5:35 | - | - | - | - | - | - | - | 5:35 | - | - | - | - | - | - | - | 5:35 |
 | |  |  |  |  |  | | | | | | |  |  | |  | | | | | | | | |
Rain (mm) | 3 | 1 | 1 | - | - | - | - | - | - | 1 | - | - | 1 | 1 | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 21 | 22 | 22 | 22 | 20 | 21 | 19 | 18 | 17 | 17 | 17 |
| Feels °C (?) | 20 | 16 | 17 | 17 | 17 | 15 | 16 | 16 | 17 | 18 | 20 | 22 | 23 | 21 | 22 | 20 | 18 | 14 | 16 | 12 | 10 | 9 | 8 | 9 |
- 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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