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:
Uchiumi surfForecast / Kyu Shu / Japan
48hr Weather and Surf, issued 8 pm Thursday 11 Dec 2025 JSTForecast update in hr min s Forecast update imminent
Uchiumi surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Uchiumi sea temperature is
21.4° C
(Which is slightly cooler than normal)How big are the waves at Uchiumi today?
The current surf forecast for Uchiumi at 2AM is: 0.7m 9s primary swell from a East direction and 0.3m 4s secondary swell from a South direction, 0.8m 4s secondary swell from a North-northeast direction (forecast issued at 08:00pm December 11). The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | 4ft (1.2m) | 7s |
| Afternoon (12 Dec) | 4.5ft (1.4m) | 7s |
| Evening (12 Dec) | 5.5ft (1.7m) | 8s |
Table - waves today at Uchiumi. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thu 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||||||||
| 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) (?) | 9 | 9 | 9 | 9 | 6 | 7 | 7 | 7 | 6 | 8 | 7 | 9 | 8 | 8 | 8 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 83 | 83 | 61 | 87 | 154 | 128 | 195 | 176 | 134 | 370 | 415 | 422 | 602 | 365 | 240 | 153 | 128 | 121 | 164 | 187 | 223 | 118 | 84 | 89 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | cross- off | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 10:06PM 1.52 | 11:48AM 1.69 | 11:33PM 1.43 | 12:39PM 1.68 | 1:11AM 1.42 | 1:28PM 1.70 | ||||||||||||||||||
Low Tide / height (m) | 4:48PM 1.01 | 4:48AM 0.51 | 6:02PM 0.92 | 5:51AM 0.67 | 7:14PM 0.77 | 7:01AM 0.80 | ||||||||||||||||||
Thu 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 7:03 | - | - | - | - | - | - | - | 7:03 | - | - | - | - | - | - | - | 7:05 | - | - |
| Sunset | - | - | - | - | - | - | - | 5:09 | - | - | - | - | - | - | - | 5:10 | - | - | - | - | - | - | - | 5:10 |
 | | | |  |  | |  | | |  | | |  |  | |  | |  |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | 1 | 5 | 11 | 1 | - | - | - | - |
| Temp. °C | 17 | 16 | 15 | 14 | 13 | 12 | 12 | 12 | 12 | 11 | 10 | 11 | 11 | 13 | 14 | 15 | 15 | 16 | 13 | 14 | 12 | 12 | 11 | 12 |
| Feels °C (?) | 16 | 15 | 13 | 12 | 12 | 7 | 5 | 5 | 5 | 4 | 4 | 6 | 7 | 11 | 12 | 12 | 12 | 14 | 10 | 10 | 6 | 7 | 3 | 4 |
- 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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