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:
Hashikui Bay surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 8 am Monday 15 Dec 2025 JSTForecast update in hr min s Forecast update imminent
Hashikui Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Hashikui Bay sea temperature is
20.8° C
(Which is slightly warmer than usual)How big are the waves at Hashikui Bay today?
The current surf forecast for Hashikui Bay at 1PM is: 0.5m 9s primary swell from a Southeast direction and 0.9m 4s secondary swell from a North-northwest direction (forecast issued at 08:00am December 15). An open ocean swell of 0.1m 6s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | 1.5ft (0.5m) | 9s |
| Afternoon (15 Dec) | 1.5ft (0.4m) | 9s |
| Evening (15 Dec) | 1.5ft (0.4m) | 9s |
Table - waves today at Hashikui Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | Thu 18 | |||||||||||||||||||||
| 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) (?) | 6 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 35 | 42 | 42 | 31 | 31 | 22 | 29 | 21 | 20 | 12 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 9 | 9 | 9 | 7 | 7 | 7 | 7 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross | glass | glass | cross- on | glass | cross- off | cross- off | cross | cross- off | glass | glass | cross- off | cross- off | cross | cross- on | cross- on |
High Tide / height (m) | 1:55PM 1.50 | 3:32AM 1.42 | 2:40PM 1.55 | 4:27AM 1.51 | 3:22PM 1.60 | |||||||||||||||||||
Low Tide / height (m) | 7:55AM 0.83 | 8:49PM 0.39 | 8:57AM 0.87 | 9:36PM 0.23 | 9:49AM 0.90 | 10:20PM 0.10 | ||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thu 18 | |||||||||||||||||||||
| Sunrise | - | 6:58 | - | - | - | - | - | - | - | 6:58 | - | - | - | - | - | - | - | 6:58 | - | - | - | - | - | - |
| Sunset | - | - | - | 4:53 | - | - | - | - | - | - | - | 4:53 | - | - | - | - | - | - | - | 4:54 | - | - | - | - |
 |  | | | | | | | | | |  | | | | | | | | |  |  | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 6 | 8 | 11 | 11 | 8 | 7 | 7 | 6 | 6 | 8 | 11 | 12 | 9 | 9 | 8 | 8 | 8 | 11 | 13 | 13 | 11 | 12 | 11 | 10 |
| Feels °C (?) | 2 | 2 | 6 | 6 | 4 | 3 | 3 | 2 | 2 | 5 | 9 | 9 | 7 | 6 | 5 | 5 | 5 | 9 | 10 | 10 | 8 | 10 | 8 | 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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