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:
Shichirigahama surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 2 pm Wednesday 17 Dec 2025 JSTForecast update in hr min s Forecast update imminent
Shichirigahama surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Shichirigahama sea temperature is
17.7° C
(Which is 1.4°C colder than average for this time of year)How big are the waves at Shichirigahama today?
The current surf forecast for Shichirigahama at 4PM is: 0.1m 6s primary swell from a Southwest direction and 0.1m 7s secondary swell from a South direction, 0.2m 4s secondary swell from a South-southwest direction (forecast issued at 02:00pm December 17). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | - | - |
| Afternoon (17 Dec) | 0.5ft (0.2m) | 4s |
| Evening (17 Dec) | 3ft (0.9m) | 5s |
Table - waves today at Shichirigahama. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| 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) (?) | 4 | 4 | 4 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 5 | 5 | 5 | 5 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 2 | 2 | 29 | 47 | 28 | 13 | 15 | 11 | 8 | 4 | 4 | 4 | 2 | 2 | 2 | 5 | 4 | 5 | 5 | 5 | 27 | 53 | 37 | 42 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | on | cross- on | cross- on | off | off | off | off | off | cross- off | cross- off | cross- off | off | off | off | off | off | cross | glass | glass | on | on | on | on |
High Tide / height (m) | 2:07PM 1.39 | 5:12AM 1.31 | 2:42PM 1.42 | 5:48AM 1.34 | 3:17PM 1.46 | 6:19AM 1.35 | ||||||||||||||||||
Low Tide / height (m) | 9:44PM 0.12 | 9:40AM 1.07 | 10:19PM 0.04 | 10:15AM 1.09 | 10:53PM -0.01 | |||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:43 | - | - | - | - | - | - | - | 6:45 | - | - | - | - | - | - | - | 6:45 |
| Sunset | - | 4:30 | - | - | - | - | - | - | - | 4:30 | - | - | - | - | - | - | - | 4:31 | - | - | - | - | - | - |
 |  |  | | | | | | | | |  | | | | | |  |  | | | |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - |
| Temp. °C | 11 | 12 | 14 | 13 | 10 | 9 | 9 | 8 | 9 | 11 | 11 | 11 | 11 | 8 | 8 | 8 | 10 | 11 | 12 | 12 | 13 | 15 | 17 | 17 |
| Feels °C (?) | 9 | 7 | 6 | 6 | 4 | 1 | 1 | 1 | 4 | 6 | 6 | 8 | 8 | 2 | 3 | 2 | 6 | 8 | 11 | 11 | 11 | 12 | 13 | 13 |
- 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 Shichirigahama 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