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Keta Reef Oshima Surf Forecast
/ Izu Islands (6 surf breaks) /
Keta Reef Oshima surfForecast / Izu Islands / Japan
12 Day Weather and Surf, issued 8 pm Monday 31 Mar 2025 JST
Best Forecast Surf Conditions for Keta Reef Oshima this week:
The surf forecast for Keta Reef Oshima over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Apr 03) at 3AM. The primary swell is predicted to be 1.6m and 11s period with a secondary swell of 0.8m and 9s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Keta Reef Oshima in the next 12 days are 2.3m 11s and forecast to arrive on Wednesday (Apr 02) at 3PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 6s period and expected on Tuesday (Apr 01) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Thu 3rd Apr) | 5ft (1.6m) 11s |
| Best Surf | 3AM (Thu 3rd Apr) | 5ft (1.6m) 11s |
| Most Powerful | 3PM (Wed 2nd Apr) | 7.5ft (2.3m) 11s |
Table - best surf conditions forecast for Keta Reef Oshima over the next 12 days.
Tuesday 01 | Wednesday 02 | Thursday 03 | Friday 04 | Saturday 05 | Sunday 06 | Monday 07 | Tuesday 08 | Wednesday 09 | Thursday 10 | Friday 11 | Sat 12 | |||||||||||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  |  | |||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 6 | 10 | 10 | 9 | 10 | 11 | 11 | 11 | 10 | 14 | 13 | 13 | 13 | 12 | 12 | 11 | 6 | 6 | 7 | 7 | 8 | 8 | 8 | 5 | 6 | 9 | 9 | 8 | 9 | 9 | 5 | 9 | 6 | 9 | 7 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 0 | 593 | 307 | 201 | 1020 | 1164 | 651 | 269 | 168 | 236 | 229 | 171 | 121 | 73 | 47 | 39 | 171 | 229 | 251 | 29 | 44 | 32 | 39 | 60 | 144 | 71 | 59 | 57 | 65 | 58 | 66 | 88 | 75 | 68 | 97 | 342 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross | cross- off | cross- off | glass | cross- on | cross- off | cross- on | cross- on | cross- on | cross- on | on | cross- off | cross | cross- on | cross- on | cross- on | on | cross- off | off | cross- off | cross- on | cross- on | cross- on | cross- off | off | cross- off | cross- off | off |
High Tide / height (m) | 5:51AM 1.43 | 7:17PM 1.34 | 6:14AM 1.41 | 8:14PM 1.23 | 6:36AM 1.38 | 9:25PM 1.11 | 6:58AM 1.31 | 11:35PM 1.04 | 7:16AM 1.22 | 7:02AM 1.10 | 3:03AM 11:29AM 1.11 0.98 | 3:13AM 1.14 | 1:45PM 1.04 | 3:26AM 1.17 | 2:48PM 1.13 | 3:40AM 1.22 | 3:35PM 1.21 | 3:56AM 1.27 | 4:14PM 1.26 | 4:14AM 1.31 | 4:51PM 1.29 | |||||||||||||||
Low Tide / height (m) | 12:10AM 0.53 | 12:35PM -0.07 | 12:41AM 0.69 | 1:17PM -0.05 | 1:09AM 0.83 | 2:03PM 0.02 | 1:33AM 0.94 | 2:59PM 0.13 | 1:41AM 1.02 | 4:16PM 0.25 | 6:01PM 0.32 | 8:50AM 0.96 | 7:28PM 0.33 | 8:54AM 0.80 | 8:26PM 0.33 | 9:16AM 0.64 | 9:08PM 0.33 | 9:41AM 0.49 | 9:41PM 0.36 | 10:07AM 0.35 | 10:11PM 0.40 | 10:34AM 0.23 | ||||||||||||||
Tuesday 01 | Wednesday 02 | Thursday 03 | Friday 04 | Saturday 05 | Sunday 06 | Monday 07 | Tuesday 08 | Wednesday 09 | Thursday 10 | Friday 11 | Sat 12 | |||||||||||||||||||||||||
| Sunrise | - | 5:31 | - | - | 5:28 | - | - | 5:28 | - | - | 5:26 | - | - | 5:24 | - | - | 5:24 | - | - | 5:22 | - | - | 5:20 | - | - | 5:20 | - | - | 5:18 | - | - | 5:16 | - | - | 5:16 | - |
| Sunset | - | - | 6:01 | - | - | 6:02 | - | - | 6:04 | - | - | 6:05 | - | - | 6:06 | - | - | 6:06 | - | - | 6:07 | - | - | 6:07 | - | - | 6:08 | - | - | 6:08 | - | - | 6:09 | - | - | 6:10 |
 |  |  |  | | | |  |  |  | | |  | |  | | |  | | | |  | | |  | | | | | |  | | | | | | |
Rain (mm) | 8 | 3 | - | 3 | 2 | - | 2 | 1 | - | - | - | - | 1 | - | - | 1 | 1 | 3 | 1 | - | - | - | - | - | - | - | - | - | - | - | 21 | - | - | 1 | - | - |
| Temp. °C | 8 | 6 | 7 | 9 | 10 | 11 | 11 | 13 | 16 | 15 | 12 | 13 | 14 | 14 | 16 | 16 | 16 | 17 | 17 | 13 | 15 | 16 | 17 | 17 | 18 | 15 | 16 | 17 | 18 | 18 | 16 | 16 | 17 | 15 | 15 | 17 |
| Feels °C (?) | -1 | -6 | -5 | -4 | -2 | 2 | 3 | 12 | 9 | 7 | 7 | 11 | 10 | 12 | 9 | 8 | 10 | 9 | 12 | 10 | 12 | 12 | 8 | 7 | 16 | 9 | 12 | 15 | 14 | 12 | 7 | 15 | 13 | 7 | 12 | 15 |
Short Range Forecast: Moderate rain (total 19mm), heaviest on Mon night. Very mild (max 16°C on Thu afternoon, min 5°C on Tue morning). Winds decreasing (gales from the NNE on Tue morning, light winds from the SE by Thu morning). | Days 3-6 Weather Summary Light rain (total 6mm), mostly falling on Sun afternoon. Very mild (max 17°C on Sun afternoon, min 11°C on Thu night). Winds increasing (calm on Fri afternoon, strong winds from the WSW by Sun afternoon). | Days 6-9 Weather Summary Some drizzle, heaviest during Sun night. Very mild (max 18°C on Tue night, min 13°C on Sun night). Winds increasing (calm on Mon morning, near gales from the WSW by Tue afternoon). | Long Range Forecast: Heavy rain (total 22mm), heaviest during Thu night. Very mild (max 18°C on Thu morning, min 14°C on Fri night). Mainly near gales. | |||||||||||||||||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Keta Reef Oshima surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Keta Reef Oshima Surf forecast
The above surf forecast table for Keta Reef Oshima provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Keta Reef Oshima can be found by selecting the local surf guide option on the grey menu. Our Keta Reef Oshima surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Keta Reef Oshima) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Keta Reef Oshima may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Keta Reef Oshima is 1 km (1 miles) from the city of Oshima. If you plan a holiday in Izu Islands, look for hotels and other accommodation in Oshima. Oshima has rooms for a wide range of budgets as well as car hire and transport links.
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