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 8 am Saturday 13 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
18.9° C
(Which is slightly cooler than normal)| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 0.5ft (0.1m) | 5s |
| Afternoon (13 Dec) | - | - |
| Evening (13 Dec) | 0.5ft (0.1m) | 6s |
Table - waves today at Nagahama. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | Tue 16 | |||||||||||||||||||||
| 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) (?) | 5 | 5 | 11 | 11 | 11 | 6 | 6 | 7 | 7 | 7 | 7 | 9 | 8 | 10 | 9 | 10 | 10 | 9 | 10 | 9 | 9 | 9 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1 | 1 | 0 | 0 | 0 | 2 | 2 | 29 | 47 | 66 | 70 | 165 | 1100 | 657 | 388 | 116 | 134 | 71 | 37 | 22 | 22 | 21 | 20 | 19 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | on | cross- on | cross- on | cross- on | cross | cross | cross- off | glass | cross | off | off | off | off |
High Tide / height (m) | 11:14AM 1.26 | 11:18PM 1.07 | 12:01PM 1.27 | 1:08AM 1.09 | 12:45PM 1.30 | 2:31AM 1.17 | ||||||||||||||||||
Low Tide / height (m) | 4:10AM 0.55 | 5:42PM 0.75 | 5:18AM 0.67 | 6:52PM 0.61 | 6:31AM 0.77 | 7:48PM 0.45 | ||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tue 16 | |||||||||||||||||||||
| Sunrise | - | 6:39 | - | - | - | - | - | - | - | 6:41 | - | - | - | - | - | - | - | 6:41 | - | - | - | - | - | - |
| Sunset | - | - | - | 4:29 | - | - | - | - | - | - | - | 4:30 | - | - | - | - | - | - | - | 4:30 | - | - | - | - |
 |  | |  | |  |  | | |  |  | |  | | | | |  | | | |  | | | |
Rain (mm) | - | - | - | - | - | 1 | 3 | - | 4 | 2 | 7 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 5 | 5 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 11 | 13 | 13 | 12 | 12 | 12 | 11 | 11 | 12 | 11 | 10 | 9 | 9 |
| Feels °C (?) | -3 | -2 | 1 | 3 | 2 | 1 | 0 | 1 | 3 | 1 | 4 | 7 | 6 | 5 | 6 | 3 | 6 | 6 | 8 | 8 | 4 | 4 | 3 | 2 |
- 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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