Nazare Big Wave Challenge Gets Yellow Alert, Could Run Saturday in Giant Waves
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Surf Forecasts:
Tacos (Hachijojima Island) surfForecast / Izu Islands / Japan
48hr Weather and Surf, issued 2 am Saturday 13 Dec 2025 JSTForecast update in hr min s Forecast update imminent
Tacos (Hachijojima Island) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Tacos (Hachijojima Island) sea temperature is
23.2° C
(Which is 2.0°C warmer than normal for this time of year)How big are the waves at Tacos (Hachijojima Island) today?
The current surf forecast for Tacos (Hachijojima Island) at 6AM is: 2.5m 11s primary swell from a Northeast direction and 0.3m 15s secondary swell from a East direction (forecast issued at 02:00am December 13). An open ocean swell of 0.9m 7s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 7.5ft (2.3m) | 10s |
| Afternoon (13 Dec) | 6ft (1.9m) | 9s |
| Evening (13 Dec) | 6ft (1.9m) | 7s |
Table - waves today at Tacos (Hachijojima Island). (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) (?) | 9 | 9 | 11 | 10 | 10 | 9 | 8 | 7 | 7 | 8 | 8 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 680 | 537 | 1500 | 1039 | 872 | 586 | 307 | 322 | 494 | 622 | 619 | 2153 | 2312 | 1803 | 1022 | 569 | 373 | 262 | 231 | 147 | 125 | 83 | 79 | 61 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | on | on | on | on | cross- on | cross | cross | cross- off | cross- on | cross- off | cross- off | off | off | off | off | off | off | off | off | off | off | off |
High Tide / height (m) | 10:53PM 1.22 | 12:13PM 1.36 | 12:41AM 1.18 | 12:54PM 1.41 | 2:27AM 1.19 | 1:34PM 1.44 | ||||||||||||||||||
Low Tide / height (m) | 5:26AM 0.75 | 7:00PM 0.86 | 6:18AM 0.86 | 8:04PM 0.72 | 7:14AM 0.95 | 8:54PM 0.56 | ||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:33 | - | - | - | - | - | - | - | 6:33 | - | - | - | - | - | - | - | 6:35 | - | - | - | - |
| Sunset | - | - | - | - | - | 4:34 | - | - | - | - | - | - | - | 4:34 | - | - | - | - | - | - | - | 4:35 | - | - |
 |  | |  | |  | | | | |  |  | |  | |  |  | | |  | | | | | |
Rain (mm) | 1 | - | - | 1 | 1 | 1 | 2 | 1 | 2 | 3 | 6 | 15 | 2 | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 13 | 14 | 14 | 13 | 13 | 15 | 17 | 18 | 16 | 17 | 17 | 20 | 21 | 16 | 15 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 |
| Feels °C (?) | 8 | 9 | 8 | 5 | 6 | 9 | 12 | 14 | 11 | 11 | 13 | 13 | 11 | 5 | 3 | 2 | 1 | 0 | 0 | 1 | 1 | 3 | 4 | 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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