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Surf Forecasts:
Santos (Hachijojima Island) surfForecast / Izu Islands / Japan
48hr Weather and Surf, issued 8 am Saturday 20 Dec 2025 JSTForecast update in hr min s Forecast update imminent
Santos (Hachijojima Island) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Santos (Hachijojima Island) sea temperature is
22.5° C
(Which is 1.7°C warmer than normal for this time of year)How big are the waves at Santos (Hachijojima Island) today?
The current surf forecast for Santos (Hachijojima Island) at 11AM is: 1.6m 6s primary swell from a Southeast direction and 0.7m 12s secondary swell from a Northeast direction, 0.2m 6s secondary swell from a North-northeast direction (forecast issued at 08:00am December 20). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Dec) | 5ft (1.6m) | 6s |
| Afternoon (20 Dec) | 6ft (1.8m) | 6s |
| Evening (20 Dec) | 7ft (2.2m) | 7s |
Table - waves today at Santos (Hachijojima Island). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 20 | Sunday 21 | Monday 22 | Tue 23 | |||||||||||||||||||||
| 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) (?) | 12 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 7 | 9 | 10 | 10 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 177 | 150 | 190 | 236 | 311 | 412 | 450 | 456 | 425 | 408 | 639 | 929 | 1241 | 1134 | 1379 | 912 | 789 | 711 | 689 | 2027 | 2896 | 3060 | 2694 | 2082 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross | cross | cross- on | cross- off | off | off | cross- off | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 6:30AM 1.34 | 4:35PM 1.41 | 7:03AM 1.34 | 5:10PM 1.41 | 7:34AM 1.33 | 5:45PM 1.42 | ||||||||||||||||||
Low Tide / height (m) | 11:21AM 0.93 | 11:55PM 0.03 | 11:53AM 0.91 | 12:29AM 0.03 | 12:24PM 0.89 | 1:02AM 0.06 | ||||||||||||||||||
Saturday 20 | Sunday 21 | Monday 22 | Tue 23 | |||||||||||||||||||||
| Sunrise | - | 6:37 | - | - | - | - | - | - | - | 6:39 | - | - | - | - | - | - | - | 6:39 | - | - | - | - | - | - |
| Sunset | - | - | - | 4:36 | - | - | - | - | - | - | - | 4:37 | - | - | - | - | - | - | - | 4:37 | - | - | - | - |
 |  | |  |  |  | | | |  | |  |  | |  | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | 2 | 4 | 6 | 14 | 20 | 1 | - | - | 1 | 2 | 2 | 1 | 1 | - | - |
| Temp. °C | 18 | 19 | 20 | 20 | 20 | 21 | 20 | 21 | 21 | 20 | 19 | 19 | 19 | 19 | 19 | 18 | 19 | 16 | 14 | 14 | 14 | 14 | 13 | 14 |
| Feels °C (?) | 11 | 11 | 12 | 13 | 13 | 13 | 12 | 14 | 15 | 14 | 13 | 13 | 13 | 15 | 14 | 11 | 15 | 8 | 4 | 4 | 4 | 4 | 3 | 5 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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