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:
Nagahama surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 2 am Friday 12 Dec 2025 JSTForecast update in hr min s Forecast update imminent
Nagahama surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Nagahama sea temperature is
18.8° C
(Which is slightly cooler than normal)How big are the waves at Nagahama today?
The current surf forecast for Nagahama at 5AM is: 0.7m 6s primary swell from a Southwest direction and 0.1m 11s secondary swell from a Southeast direction (forecast issued at 02:00am December 12). An open ocean swell of 0.7m 3s 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) | 1ft (0.3m) | 7s |
| Afternoon (12 Dec) | 0.5ft (0.1m) | 11s |
| Evening (12 Dec) | 0.5ft (0.1m) | 5s |
Table - waves today at Nagahama. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 12 | Saturday 13 | Sunday 14 | ||||||||||||||||||||||
| 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 | 6 PM | 9 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    | |||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 6 | 7 | 6 | 7 | 11 | 11 | 7 | 6 | 8 | 5 | 15 | 14 | 14 | 7 | 7 | 6 | 6 | 6 | 6 | 7 | 9 | 10 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 273 | 114 | 27 | 10 | 4 | 4 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 2 | 2 | 7 | 11 | 14 | 14 | 23 | 138 | 284 | 455 | 460 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- off | cross- off | cross- off | cross- off | cross- off | off | off | off | off | off | off | off | off | off | cross- off | cross- off | cross- off | off | cross- off | cross- off | on | cross- on | cross- on |
High Tide / height (m) | 10:26AM 1.27 | 9:28PM 1.12 | 11:14AM 1.26 | 11:18PM 1.07 | 12:01PM 1.27 | |||||||||||||||||||
Low Tide / height (m) | 3:12AM 0.41 | 4:20PM 0.86 | 4:10AM 0.55 | 5:42PM 0.75 | 5:18AM 0.67 | 6:52PM 0.61 | ||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:39 | - | - | - | - | - | - | - | 6:39 | - | - | - | - | - | - | - | 6:41 | - | - | - | - |
| Sunset | - | - | - | - | - | 4:29 | - | - | - | - | - | - | - | 4:29 | - | - | - | - | - | - | - | 4:30 | - | - |
 | |  |  |  | | | | |  | | | | |  | | | | |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | - | - | 3 | 2 | 3 | - | - | - |
| Temp. °C | 15 | 11 | 7 | 7 | 8 | 9 | 8 | 6 | 6 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 8 | 10 | 13 | 13 |
| Feels °C (?) | 3 | 2 | -6 | -5 | -2 | -1 | -1 | -2 | -1 | -2 | -2 | -2 | 0 | 0 | -1 | -1 | -1 | -1 | 1 | 0 | 2 | 8 | 6 | 6 |
- 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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