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:
Hayama surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 8 pm Tuesday 16 Dec 2025 JSTForecast update in hr min s Forecast update imminent
Hayama surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Hayama sea temperature is
18.0° C
(Which is 1.2°C colder than average for this time of year)How big are the waves at Hayama today?
The current surf forecast for Hayama at 3AM is: 0.2m 5s primary swell from a South-southwest direction and 0.1m 8s secondary swell from a Southeast direction (forecast issued at 08:00pm December 16). The wind direction is predicted to be offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | 0.5ft (0.2m) | 4s |
| Afternoon (17 Dec) | 1.5ft (0.5m) | 6s |
| Evening (17 Dec) | 3ft (0.9m) | 5s |
Table - waves today at Hayama. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tue 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| 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) (?) | 8 | 8 | 7 | 5 | 5 | 4 | 4 | 6 | 4 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 10 | 6 | 11 | 11 | 5 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 6 | 2 | 13 | 2 | 2 | 2 | 2 | 19 | 18 | 47 | 62 | 13 | 8 | 3 | 4 | 4 | 4 | 2 | 2 | 4 | 1 | 5 | 4 | 1 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | off | cross- off | off | off | off | glass | cross- on | cross- on | cross- on | off | off | off | off | off | cross- off | cross- off | cross- off | cross- off | off | off | off | off | glass |
High Tide / height (m) | 3:33AM 1.26 | 2:06PM 1.38 | 4:23AM 1.33 | 2:44PM 1.42 | 5:07AM 1.38 | |||||||||||||||||||
Low Tide / height (m) | 8:35PM 0.30 | 8:35AM 0.89 | 9:18PM 0.16 | 9:24AM 0.92 | 9:58PM 0.05 | 10:07AM 0.94 | ||||||||||||||||||
Tue 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:43 | - | - | - | - | - | - | - | 6:43 | - | - | - | - | - | - | - | 6:43 | - | - |
| Sunset | - | - | - | - | - | - | - | 4:30 | - | - | - | - | - | - | - | 4:30 | - | - | - | - | - | - | - | 4:30 |
 | | | | |  |  | | | | | | | | | |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 13 | 12 | 11 | 10 | 9 | 9 | 10 | 11 | 14 | 14 | 11 | 10 | 10 | 9 | 10 | 11 | 12 | 12 | 11 | 10 | 9 | 8 | 10 | 11 |
| Feels °C (?) | 10 | 10 | 7 | 6 | 3 | 3 | 8 | 8 | 7 | 5 | 4 | 2 | 1 | 2 | 4 | 6 | 7 | 8 | 8 | 5 | 3 | 3 | 7 | 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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