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Keta Reef Oshima Surf Forecast
/ Izu Islands (6 surf breaks) /
Surf Forecasts:
Keta Reef Oshima surfForecast / Izu Islands / Japan
48hr Weather and Surf, issued 8 am Saturday 04 Apr 2026 JSTForecast update in hr min s Forecast update imminent
Keta Reef Oshima surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Keta Reef Oshima sea temperature is
15.5° C
(Which is 2.4°C colder than average for this time of year)How big are the waves at Keta Reef Oshima today?
The current surf forecast for Keta Reef Oshima at 2PM is: 2.0m 7s primary swell from a South-southeast direction and 0.1m 10s secondary swell from a East direction (forecast issued at 08:00am April 04). The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (04 Apr) | 2.5ft (0.7m) | 6s |
| Afternoon (04 Apr) | 7ft (2.1m) | 7s |
| Evening (04 Apr) | 10ft (3.0m) | 8s |
Table - waves today at Keta Reef Oshima. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 04 | Sunday 05 | Monday 06 | Tue 07 | |||||||||||||||||||||
| 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 | 6 | 6 | 7 | 8 | 8 | 9 | 10 | 10 | 11 | 10 | 9 | 10 | 10 | 8 | 9 | 9 | 8 | 8 | 8 | 8 | 7 | 7 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 38 | 34 | 249 | 407 | 611 | 1279 | 2744 | 2840 | 2352 | 2857 | 1375 | 338 | 763 | 415 | 326 | 714 | 233 | 105 | 157 | 119 | 103 | 96 | 68 | 64 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross | cross | cross | cross | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | cross- off | cross- off | glass | cross- on | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 5:18AM 1.39 | 6:29PM 1.30 | 5:38AM 1.38 | 7:06PM 1.24 | 5:58AM 1.36 | 7:46PM 1.17 | ||||||||||||||||||
Low Tide / height (m) | 11:55AM 0.06 | 12:00AM 0.59 | 12:25PM 0.06 | 12:26AM 0.68 | 12:55PM 0.08 | 12:51AM 0.76 | ||||||||||||||||||
Saturday 04 | Sunday 05 | Monday 06 | Tue 07 | |||||||||||||||||||||
| Sunrise | 5:26 | - | - | - | - | - | - | - | 5:24 | - | - | - | - | - | - | - | 5:24 | - | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:05 | - | - | - | - | - | - | - | 6:06 | - | - | - | - | - | - | - | 6:06 | - | - | - |
 |  | | | |  |  |  |  |  | | | |  | | |  | | | | |  | | | |
Rain (mm) | - | 1 | 2 | 1 | 4 | 8 | 4 | 6 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 3 |
| Temp. °C | 16 | 17 | 17 | 18 | 17 | 17 | 18 | 19 | 18 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 15 | 15 | 16 | 17 | 17 | 17 | 17 | 14 |
| Feels °C (?) | 13 | 11 | 9 | 10 | 9 | 5 | 7 | 11 | 13 | 11 | 11 | 11 | 10 | 11 | 12 | 15 | 14 | 14 | 17 | 13 | 13 | 14 | 14 | 10 |
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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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