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 Friday 12 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
21.0° C
(Which is slightly warmer than usual)How big are the waves at Asakawa today?
The current surf forecast for Asakawa at 2PM is: 0.4m 11s primary swell from a East-southeast direction and 0.1m 5s secondary swell from a Southwest direction (forecast issued at 08:00am December 12). 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 (12 Dec) | 1.5ft (0.4m) | 10s |
| Afternoon (12 Dec) | 1.5ft (0.4m) | 11s |
| Evening (12 Dec) | 1.5ft (0.4m) | 10s |
Table - waves today at Asakawa. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 12 | Saturday 13 | Sunday 14 | Mon 15 | |||||||||||||||||||||
| 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 | 11 | 11 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 7 | 7 | 7 | 9 | 10 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 31 | 31 | 62 | 40 | 38 | 35 | 35 | 21 | 37 | 22 | 45 | 46 | 43 | 40 | 40 | 22 | 23 | 49 | 37 | 15 | 44 | 125 | 186 | 145 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off | cross- off | cross | glass | glass | glass | cross- on | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 12:04PM 1.51 | 12:04AM 1.27 | 12:52PM 1.50 | 1:47AM 1.26 | 1:38PM 1.51 | |||||||||||||||||||
Low Tide / height (m) | 5:03AM 0.64 | 6:30PM 0.89 | 6:05AM 0.79 | 7:42PM 0.77 | 7:14AM 0.90 | 8:37PM 0.64 | ||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Mon 15 | |||||||||||||||||||||
| Sunrise | - | 6:56 | - | - | - | - | - | - | - | 6:56 | - | - | - | - | - | - | - | 6:58 | - | - | - | - | - | - |
| Sunset | - | - | - | 4:53 | - | - | - | - | - | - | - | 4:53 | - | - | - | - | - | - | - | 4:54 | - | - | - | - |
 |  |  | |  |  | | | | | | | | |  | | |  | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 4 | 4 | 2 | - | - | - | - | - | - |
| Temp. °C | 9 | 8 | 9 | 9 | 5 | 3 | 3 | 2 | 2 | 6 | 10 | 10 | 8 | 9 | 11 | 12 | 12 | 12 | 11 | 11 | 8 | 7 | 6 | 7 |
| Feels °C (?) | 3 | 1 | 2 | 2 | -2 | -4 | -4 | -3 | -3 | 2 | 6 | 6 | 6 | 7 | 10 | 11 | 10 | 11 | 5 | 5 | 3 | 3 | 2 | 4 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
Buy Less, Surf More This Black Friday
Surf-forecast is providing a free, all-access pass to our premium features and 12-day forecasts all weekend.
Quiksilver Teams Up With PrimaLoft® For World’s First Thermal Layering System for a Wetsuit.
Previously used in our snow jackets for mountain conditions, PrimaLoft® technology is making its debut in the surf industry. The aim is to bring mountain-grade warmth to the waves.
Vancouver Island’s Day Of Days With Reed Platenius
Surf-Forecast recently helped the 21-year-old Canadian pro surfer and adventurer score some cold water perfection at home.
Read more
Discover more articles and updates in the Greenroom.
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Asakawa surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest