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:
Uchiumi surfForecast / Kyu Shu / Japan
48hr Weather and Surf, issued 2 pm Monday 15 Dec 2025 JSTForecast update in hr min s Forecast update imminent
Uchiumi surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Uchiumi sea temperature is
21.0° C
(Which is slightly cooler than normal)How big are the waves at Uchiumi today?
The current surf forecast for Uchiumi at 6PM is: 0.7m 10s primary swell from a East-southeast direction and 0.1m 4s secondary swell from a Northeast direction (forecast issued at 02:00pm December 15). The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | - | - |
| Afternoon (15 Dec) | 2.5ft (0.7m) | 10s |
| Evening (15 Dec) | 2ft (0.6m) | 10s |
Table - waves today at Uchiumi. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| 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) (?) | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 10 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 8 | 5 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 75 | 94 | 98 | 74 | 74 | 71 | 69 | 50 | 50 | 51 | 47 | 43 | 42 | 41 | 28 | 28 | 28 | 28 | 30 | 30 | 30 | 24 | 29 | 77 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- on | cross- off | off | cross- off | cross- off | cross- off | cross- off | glass | on | glass | cross- off | cross- off | cross- off | glass | glass | cross- off | cross- off | off | cross- off | cross- off | cross- off | cross | cross- on |
High Tide / height (m) | 2:15PM 1.73 | 3:48AM 1.59 | 2:58PM 1.77 | 4:45AM 1.70 | 3:40PM 1.82 | 5:33AM 1.79 | ||||||||||||||||||
Low Tide / height (m) | 9:09PM 0.40 | 9:11AM 0.95 | 9:55PM 0.22 | 10:05AM 0.99 | 10:38PM 0.07 | |||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 7:05 | - | - | - | - | - | - | - | 7:07 | - | - | - | - | - | - | - | 7:07 |
| Sunset | - | 5:10 | - | - | - | - | - | - | - | 5:10 | - | - | - | - | - | - | - | 5:12 | - | - | - | - | - | - |
 | |  | | | | | | | | | | | | | | |  |  | | | |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - |
| Temp. °C | 10 | 11 | 11 | 10 | 9 | 9 | 8 | 8 | 11 | 12 | 12 | 11 | 11 | 10 | 11 | 12 | 15 | 17 | 15 | 14 | 13 | 13 | 13 | 13 |
| Feels °C (?) | 7 | 7 | 8 | 7 | 6 | 6 | 4 | 5 | 8 | 9 | 10 | 8 | 8 | 7 | 9 | 10 | 12 | 13 | 14 | 12 | 11 | 11 | 11 | 10 |
- 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 Uchiumi 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