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:
Nichinan surfForecast / Kyu Shu / Japan
48hr Weather and Surf, issued 2 am Saturday 13 Dec 2025 JSTForecast update in hr min s Forecast update imminent
Nichinan surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Nichinan sea temperature is
21.5° C
(Which is slightly cooler than normal)How big are the waves at Nichinan today?
The current surf forecast for Nichinan at 9AM is: 2.0m 8s primary swell from a East-northeast direction and 0.6m 10s secondary swell from a East direction, 0.2m 15s secondary swell from a East direction (forecast issued at 02:00am December 13). The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 6.5ft (2.0m) | 8s |
| Afternoon (13 Dec) | 5.5ft (1.7m) | 6s |
| Evening (13 Dec) | 4ft (1.2m) | 7s |
Table - waves today at Nichinan. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | ||||||||||||||||||||||
| 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) (?) | 7 | 7 | 8 | 8 | 7 | 6 | 6 | 7 | 7 | 8 | 8 | 8 | 11 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 535 | 476 | 636 | 484 | 286 | 240 | 252 | 152 | 406 | 450 | 302 | 86 | 85 | 93 | 101 | 98 | 39 | 60 | 87 | 114 | 138 | 133 | 139 | 136 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross | cross- on | cross- on | cross- on | on | cross- off | cross- off | off | off | off | off | off | off | off | off | off | off | off | glass | cross- off | off |
High Tide / height (m) | 12:23AM 1.25 | 1:13PM 1.50 | 2:09AM 1.25 | 2:01PM 1.52 | 3:32AM 1.33 | 2:45PM 1.56 | ||||||||||||||||||
Low Tide / height (m) | 6:29AM 0.70 | 8:06PM 0.74 | 7:37AM 0.82 | 9:04PM 0.60 | 8:44AM 0.90 | |||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | ||||||||||||||||||||||
| Sunrise | - | - | - | 7:03 | - | - | - | - | - | - | - | 7:05 | - | - | - | - | - | - | - | 7:05 | - | - | - | - |
| Sunset | - | - | - | - | - | 5:10 | - | - | - | - | - | - | - | 5:10 | - | - | - | - | - | - | - | 5:12 | - | - |
 |  | |  |  | |  | |  | | |  | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | 1 | - | 1 | 3 | 10 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 11 | 10 | 11 | 12 | 14 | 16 | 15 | 16 | 15 | 15 | 12 | 11 | 11 | 12 | 10 | 9 | 8 | 8 | 8 | 9 | 12 | 13 | 12 | 10 |
| Feels °C (?) | 4 | 4 | 6 | 8 | 11 | 12 | 12 | 14 | 14 | 11 | 7 | 5 | 5 | 5 | 5 | 5 | 4 | 3 | 4 | 5 | 8 | 11 | 9 | 7 |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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