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Surf Forecasts:
Santos (Hachijojima Island) surfForecast / Izu Islands / Japan
48hr Weather and Surf, issued 8 am Friday 12 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
23.3° C
(Which is 2.1°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 12PM is: 0.7m 10s primary swell from a East direction and 0.2m 15s secondary swell from a East direction (forecast issued at 08:00am December 12). An open ocean swell of 2.5m 8s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | 2.5ft (0.7m) | 10s |
| Afternoon (12 Dec) | 4.5ft (1.3m) | 7s |
| Evening (12 Dec) | 8ft (2.5m) | 10s |
Table - waves today at Santos (Hachijojima Island). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 12 | Saturday 13 | Sunday 14 | Mon 15 | |||||||||||||||||||||
| 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 | 7 | 8 | 10 | 10 | 11 | 10 | 10 | 8 | 8 | 8 | 8 | 6 | 7 | 9 | 9 | 9 | 10 | 11 | 10 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 130 | 102 | 106 | 176 | 527 | 1185 | 726 | 632 | 769 | 815 | 438 | 392 | 298 | 198 | 220 | 336 | 1070 | 2327 | 3495 | 2578 | 81 | 527 | 348 | 231 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | cross | cross- on | cross- on | cross- on | cross- on | on | on | on | on | cross- on | cross- on | cross- off | cross- off | cross- on | cross- off | cross- off | off | off | off | off | off |
High Tide / height (m) | 11:30AM 1.31 | 10:53PM 1.22 | 12:13PM 1.36 | 12:41AM 1.18 | 12:54PM 1.41 | 2:27AM 1.19 | ||||||||||||||||||
Low Tide / height (m) | 4:35AM 0.60 | 5:33PM 0.97 | 5:26AM 0.75 | 7:00PM 0.86 | 6:18AM 0.86 | 8:04PM 0.72 | ||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Mon 15 | |||||||||||||||||||||
| Sunrise | - | 6:33 | - | - | - | - | - | - | - | 6:33 | - | - | - | - | - | - | - | 6:33 | - | - | - | - | - | - |
| Sunset | - | - | - | 4:34 | - | - | - | - | - | - | - | 4:34 | - | - | - | - | - | - | - | 4:34 | - | - | - | - |
 |  | | |  | | | | |  | | |  | | | |  |  |  | | |  |  | | |
Rain (mm) | - | - | - | - | 1 | 1 | - | 1 | 1 | 2 | 1 | 2 | 4 | 1 | 2 | 5 | 8 | 9 | 2 | 1 | 1 | - | - | - |
| Temp. °C | 16 | 14 | 13 | 14 | 12 | 12 | 13 | 13 | 13 | 13 | 14 | 15 | 16 | 18 | 16 | 15 | 17 | 21 | 22 | 16 | 16 | 14 | 13 | 14 |
| Feels °C (?) | 5 | 3 | 3 | 10 | 4 | 5 | 7 | 7 | 7 | 6 | 7 | 9 | 11 | 13 | 11 | 12 | 13 | 12 | 12 | 5 | 3 | 1 | -1 | 1 |
- 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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