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:
Choshi surfForecast / Chiba / Japan
48hr Weather and Surf, issued 8 am Thursday 11 Dec 2025 JSTForecast update in hr min s Forecast update imminent
Choshi surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Choshi sea temperature is
17.9° C
(Which is 1.5°C colder than average for this time of year)How big are the waves at Choshi today?
The current surf forecast for Choshi at 2PM is: 0.5m 10s primary swell from a East direction and 0.4m 4s secondary swell from a Southeast direction, 0.4m 3s secondary swell from a South-southwest direction (forecast issued at 08:00am December 11). The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Dec) | 1.5ft (0.5m) | 10s |
| Afternoon (11 Dec) | 1.5ft (0.4m) | 10s |
| Evening (11 Dec) | 5.5ft (1.7m) | 6s |
Table - waves today at Choshi. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 11 | Friday 12 | Saturday 13 | Sun 14 | |||||||||||||||||||||
| 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) (?) | 10 | 10 | 10 | 10 | 4 | 6 | 7 | 7 | 10 | 11 | 11 | 11 | 13 | 12 | 12 | 11 | 14 | 13 | 12 | 12 | 12 | 12 | 5 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 50 | 49 | 48 | 31 | 67 | 163 | 247 | 69 | 37 | 39 | 38 | 39 | 84 | 75 | 101 | 64 | 62 | 56 | 108 | 104 | 73 | 134 | 48 | 72 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- off | cross | cross | cross | cross | cross- off | cross- off | cross- off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | glass | glass | cross | cross- on | on | on |
High Tide / height (m) | 9:29AM 1.19 | 7:34PM 1.15 | 10:06AM 1.19 | 9:04PM 1.02 | 10:44AM 1.21 | 11:29PM 0.95 | ||||||||||||||||||
Low Tide / height (m) | 2:35PM 0.95 | 2:53AM 0.48 | 4:14PM 0.87 | 3:40AM 0.62 | 5:52PM 0.74 | |||||||||||||||||||
Thursday 11 | Friday 12 | Saturday 13 | Sun 14 | |||||||||||||||||||||
| Sunrise | - | 6:35 | - | - | - | - | - | - | - | 6:35 | - | - | - | - | - | - | - | 6:37 | - | - | - | - | - | - |
| Sunset | - | - | - | 4:22 | - | - | - | - | - | - | - | 4:22 | - | - | - | - | - | - | - | 4:22 | - | - | - | - |
 |  | |  |  | | | | | | | | | |  | | | | | | |  |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 6 | 6 |
| Temp. °C | 13 | 11 | 13 | 16 | 15 | 16 | 16 | 10 | 7 | 7 | 7 | 7 | 5 | 4 | 4 | 5 | 5 | 6 | 6 | 5 | 6 | 9 | 12 | 14 |
| Feels °C (?) | 10 | 7 | 9 | 8 | 5 | 6 | 6 | 0 | -3 | -5 | -4 | -4 | -4 | -4 | -3 | -1 | -1 | 2 | 3 | 2 | 2 | 4 | 8 | 11 |
- 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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