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:
Asakawa surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 8 am Thursday 11 Dec 2025 JSTForecast update in hr min s Forecast update imminent
Asakawa surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Asakawa sea temperature is
21.2° C
(Which is slightly warmer than usual)How big are the waves at Asakawa today?
The current surf forecast for Asakawa at 12PM is: 0.5m 11s primary swell from a East-southeast direction and 0.4m 9s secondary swell from a East direction, 0.4m 2s secondary swell from a Southwest direction (forecast issued at 08:00am December 11). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Dec) | 1.5ft (0.5m) | 10s |
| Afternoon (11 Dec) | 1.5ft (0.5m) | 11s |
| Evening (11 Dec) | 1.5ft (0.5m) | 10s |
Table - waves today at Asakawa. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 11 | Friday 12 | Saturday 13 | Sun 14 | |||||||||||||||||||||
| 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 | 6 PM | 9 PM | 0 AM | 3 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 10 | 10 | 10 | 11 | 11 | 12 | 12 | 11 | 11 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 57 | 63 | 65 | 65 | 64 | 59 | 58 | 57 | 31 | 31 | 62 | 40 | 38 | 35 | 35 | 21 | 22 | 22 | 45 | 46 | 43 | 40 | 40 | 22 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross | cross- on | cross | cross- off | cross- off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off | cross | glass | glass | glass | off |
High Tide / height (m) | 11:14AM 1.53 | 10:28PM 1.35 | 12:04PM 1.51 | 12:04AM 1.27 | 12:52PM 1.50 | 1:47AM 1.26 | ||||||||||||||||||
Low Tide / height (m) | 4:09AM 0.46 | 5:08PM 0.97 | 5:03AM 0.64 | 6:30PM 0.89 | 6:05AM 0.79 | 7:42PM 0.77 | ||||||||||||||||||
Thursday 11 | Friday 12 | Saturday 13 | Sun 14 | |||||||||||||||||||||
| Sunrise | - | 6:56 | - | - | - | - | - | - | - | 6:56 | - | - | - | - | - | - | - | 6:56 | - | - | - | - | - | - |
| Sunset | - | - | - | 4:53 | - | - | - | - | - | - | - | 4:53 | - | - | - | - | - | - | - | 4:53 | - | - | - | - |
 |  |  | |  | | |  | | | | | | | | | | | | | |  | |  | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 2 | 6 |
| Temp. °C | 12 | 14 | 17 | 17 | 13 | 12 | 13 | 11 | 8 | 8 | 9 | 9 | 5 | 3 | 3 | 2 | 3 | 6 | 10 | 10 | 8 | 9 | 11 | 10 |
| Feels °C (?) | 11 | 12 | 13 | 13 | 10 | 10 | 11 | 6 | 2 | 1 | 2 | 2 | -2 | -4 | -3 | -4 | -2 | 2 | 6 | 6 | 6 | 7 | 10 | 8 |
- 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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