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Surf Forecasts:
Kaiser's (Hachijojima Island) surfForecast / Izu Islands / Japan
48hr Weather and Surf, issued 2 pm Tuesday 21 Apr 2026 JSTForecast update in hr min s Forecast update imminent
Kaiser's (Hachijojima Island) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kaiser's (Hachijojima Island) sea temperature is
22.0° C
(Which is 2.1°C warmer than normal for this time of year)How big are the waves at Kaiser's (Hachijojima Island) today?
The current surf forecast for Kaiser's (Hachijojima Island) at 10PM is: 1.3m 10s primary swell from a East-southeast direction and 0.4m 14s secondary swell from a Southeast direction (forecast issued at 02:00pm April 21). An open ocean swell of 1.4m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Apr) | - | - |
| Afternoon (21 Apr) | 5ft (1.6m) | 10s |
| Evening (21 Apr) | 4.5ft (1.3m) | 10s |
Table - waves today at Kaiser's (Hachijojima Island). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||||||||
| 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 | 6 AM | 9 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 10 | 10 | 10 | 6 | 7 | 7 | 7 | 8 | 8 | 8 | 12 | 14 | 14 | 14 | 14 | 14 | 10 | 13 | 5 | 13 | 13 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 530 | 520 | 441 | 363 | 400 | 354 | 554 | 520 | 429 | 346 | 308 | 263 | 183 | 301 | 297 | 245 | 241 | 160 | 221 | 142 | 85 | 84 | 186 | 1241 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | off | off | off | cross- on | cross- on | on | on | on | cross- on | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | glass | on | cross- on | cross- on | cross- off | cross- off | cross | cross |
High Tide / height (m) | 9:13PM 1.19 | 6:55AM 1.35 | 10:22PM 1.08 | 7:30AM 1.29 | 12:13AM 1.02 | 8:19AM 1.20 | ||||||||||||||||||
Low Tide / height (m) | 1:55PM -0.13 | 1:31AM 0.93 | 2:47PM -0.01 | 1:52AM 0.97 | 3:51PM 0.13 | 2:11AM 1.01 | ||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 5:03 | - | - | - | - | - | - | - | 5:01 | - | - | - | - | - | - | - | 5:01 | - |
| Sunset | - | - | 6:14 | - | - | - | - | - | - | - | 6:15 | - | - | - | - | - | - | - | 6:15 | - | - | - | - | - |
 |  |  |  |  |  |  | |  | | | | | | | | | |  |  |  | |  | | |
Rain (mm) | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 3 | 5 | 6 | 8 | 12 | 6 | 15 | 1 |
| Temp. °C | 21 | 19 | 19 | 20 | 19 | 17 | 17 | 18 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | 14 | 15 | 18 | 17 | 21 | 21 | 18 | 16 |
| Feels °C (?) | 16 | 13 | 11 | 15 | 12 | 10 | 11 | 13 | 17 | 18 | 18 | 19 | 17 | 18 | 18 | 15 | 14 | 13 | 14 | 11 | 14 | 13 | 8 | 3 |
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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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