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Oiso Jetty surfForecast / Kanagawa / Japan
12 Day Weather and Surf, issued 2 pm Wednesday 17 Sep 2025 JST
Best Forecast Surf Conditions for Oiso Jetty this week:
The surf forecast for Oiso Jetty over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 18) at 6AM. The primary swell is predicted to be 1.1m and 6s period with a secondary swell of 0.6m and 5s. Another secondary swell of 0.2m and 10s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Oiso Jetty in the next 12 days are 1.8m 6s and forecast to arrive on Thursday (Sep 18) at 6PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 3s period and expected on Tuesday (Sep 23) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Thu 18th Sep) | 3.5ft (1.1m) 6s |
| Best Surf | 6AM (Thu 18th Sep) | 3.5ft (1.1m) 6s |
| Most Powerful | 6PM (Thu 18th Sep) | 6ft (1.8m) 6s |
Table - best surf conditions forecast for Oiso Jetty over the next 12 days.
Short Range Forecast Heavy rain (total 31mm), heaviest during Thu night. Warm (max 33°C on Thu afternoon, min 20°C on Fri afternoon). Wind will be generally light. | Days 3-6 Weather Summary Light rain (total 7mm), mostly falling on Mon morning. Warm (max 26°C on Sun morning, min 19°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||
Wed 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||||||
| PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |||
Rating (10 max) | |||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||||
| Period(s) (?) | 4 | 5 | 6 | 6 | 6 | 8 | 9 | 9 | 9 | 6 | 5 | 5 | 6 | 3 | 14 | 12 | 12 | 12 | 12 | 12 | 12 | ||
Wave (?)Graph  | |||||||||||||||||||||||
 kJ (?) | 17 | 28 | 32 | 90 | 23 | 5 | 3 | 3 | 3 | 5 | 4 | 5 | 11 | 3 | 101 | 162 | 189 | 142 | 161 | 172 | 169 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- off | cross- off | glass | cross | cross | cross- off | cross- off | glass | cross- on | cross- off | cross- off | on | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | ||
High Tide / height (m) | 3:40PM 1.30 | 1:05AM 1.22 | 3:53PM 1.34 | 2:24AM 1.31 | 4:09PM 1.38 | 3:18AM 1.39 | 4:26PM 1.42 | 4:01AM 1.45 | 4:42PM 1.44 | 4:40AM 1.49 | 4:59PM 1.47 | 5:16AM 1.49 | 5:15PM 1.48 | 5:51AM 1.47 | |||||||||
Low Tide / height (m) | 8:46PM 1.07 | 8:35AM 0.32 | 9:16PM 0.93 | 9:19AM 0.29 | 9:43PM 0.78 | 9:54AM 0.30 | 10:11PM 0.63 | 10:24AM 0.34 | 10:38PM 0.50 | 10:52AM 0.40 | 11:05PM 0.39 | 11:17AM 0.49 | 11:32PM 0.31 | 11:40AM 0.58 | |||||||||
Wed 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||||||
| Sunrise | - | - | 5:26 | - | - | 5:26 | - | - | 5:28 | - | - | 5:28 | - | - | 5:30 | - | - | 5:30 | - | - | 5:31 | ||
| Sunset | 5:47 | - | - | 5:46 | - | - | 5:45 | - | - | 5:44 | - | - | 5:42 | - | - | 5:40 | - | - | 5:38 | - | - | ||
 |  | |  |  |  | |  | | |  |  | | | | | | | | | | |||
Rain (mm) | - | - | - | 1 | 14 | 3 | 5 | 4 | 4 | 1 | - | - | 1 | 2 | 2 | 1 | - | - | - | - | - | ||
| Temp. °C | 32 | 28 | 32 | 33 | 24 | 22 | 22 | 21 | 21 | 24 | 24 | 26 | 24 | 23 | 21 | 21 | 19 | 23 | 24 | 22 | 24 | ||
| Feels °C (?) | 35 | 31 | 35 | 37 | 24 | 22 | 22 | 21 | 23 | 27 | 27 | 25 | 24 | 22 | 18 | 18 | 16 | 19 | 20 | 19 | 21 | ||
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Recent Eyeball Surf Reports for Kanagawa
Continuing clean conditions at Oiso Jetty (calm at Mubeyama wx 21 km from Oiso Jetty). 0.9m 5s windswell from the SSW with a 0.3m 10s swell from the SE. 2 swells combining to make bigger set waves.
21 km away, 23 min ago
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Oiso Jetty 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 Oiso Jetty Surf forecast
The above surf forecast table for Oiso Jetty provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Oiso Jetty can be found by selecting the local surf guide option on the grey menu. Our Oiso Jetty 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 (Oiso Jetty) 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 Oiso Jetty 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.
Oiso Jetty is 3 km (2 miles) from Ninomiya. If you plan a holiday in Kanagawa, look for hotels and other accommodation in Ninomiya. Ninomiya has rooms for a wide range of budgets as well as car hire and transport links.
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