Surf Forecasts:
Osaki surf forecast from 25 Aug 2026:
- Best quality surf: Thursday 27 Aug, 9AM (local time) - 1.5ft (0.4m), 10s period, SSW swell with glassy winds.
- Most powerful swell: Wednesday 26 Aug, 3PM (local time) - 4.5ft (1.3m), 12s period, SSW swell with 415 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 9AM (local time) - 1.5ft (0.4m), 10s period with SSW swell.
Best Forecast Surf Conditions for Osaki this week:
The surf forecast for Osaki over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 27) at 9AM. The primary swell is predicted to be 0.4m and 10s period with a secondary swell of 0.5m and 6s. Another secondary swell of 0.4m and 9s is also forecast. Another secondary swell of 0.8m and 5s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Osaki in the next 16 days are 1.3m 12s and forecast to arrive on Wednesday (Aug 26) at 3PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 2s period and expected on Saturday (Aug 29) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Thu 27th Aug) | 1.5ft (0.4m) 10s |
| Best Surf | 9AM (Thu 27th Aug) | 1.5ft (0.4m) 10s |
| Most Powerful | 3PM (Wed 26th Aug) | 4.5ft (1.3m) 12s |
Table - best surf conditions forecast for Osaki over the next 16 days.
Short Range ForecastLight rain (total 7mm), mostly falling on Thu morning. Warm (max 31°C on Wed afternoon, min 23°C on Thu night). Winds decreasing (fresh winds from the SSW on Tue afternoon, calm by Thu morning). | Days 4-6 Weather SummaryMostly dry. Warm (max 29°C on Sat afternoon, min 25°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SSE 13 | SSE 12 | S 12 | SSW 12 | SSW 12 | SSW 11 | SSW 10 | SSW 5 | S 10 | SW 6 | SSW 8 | SW 6 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | S 12 | S 12 | S 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 690 | 298 | 407 | 183 | 415 | 68 | 42 | 46 | 29 | 109 | 103 | 77 | 19 | 12 | 12 | 11 | 11 | 11 | 11 | 24 | 33 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | on | on | cross-on | glassy | off | on | off | on | cross-off | off | cross-off | off | off | on | on | glassy | on | on |
High Tide | 4:45PM1.39m | 2:39AM1.41m | 5:10PM1.43m | 3:40AM1.47m | 5:33PM1.46m | 4:32AM1.53m | 5:56PM1.47m | 5:19AM1.57m | 6:18PM1.49m | 6:04AM1.58m | 6:41PM1.49m | 6:48AM1.55m | 7:03PM1.50m | ||||||||
Low Tide | 9:11AM0.27m | 9:41PM1.08m | 10:00AM0.23m | 10:21PM0.97m | 10:42AM0.22m | 10:57PM0.85m | 11:20AM0.24m | 11:30PM0.73m | 11:54AM0.30m | 00:05AM0.62m | 12:27PM0.39m | 00:39AM0.52m | 12:58PM0.50m | 1:16AM0.45m | |||||||
 | |  | | |  |  |  |  |  |  | | | | | | | | | | | |
 | 5:07 | — | — | 5:07 | — | — | 5:09 | — | — | 5:09 | — | — | 5:11 | — | — | 5:11 | — | — | 5:11 | — | — |
 | — | 6:19 | — | — | 6:17 | — | — | 6:15 | — | — | 6:15 | — | — | 6:14 | — | — | 6:12 | — | — | 6:10 | — |
mm | — | — | — | — | — | — | 3 | 1 | 3 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 29 | 30 | 28 | 29 | 31 | 28 | 27 | 24 | 25 | 26 | 27 | 27 | 28 | 29 | 26 | 27 | 27 | 27 | 29 | 29 | 28 |
Feels °C | 29 | 30 | 29 | 31 | 32 | 29 | 32 | 23 | 27 | 28 | 29 | 30 | 28 | 30 | 27 | 30 | 29 | 30 | 32 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | SSE 13 | SSE 12 | S 12 | SSW 12 | SSE 9 | SSW 11 | S 6 | S 6 | S 6 | SSW 6 | SSE 9 | SSW 6 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | S 12 | S 10 |
| kJ | 690 | 298 | 407 | 183 | 32 | 68 | 15 | 26 | 18 | 44 | 8 | 40 | 19 | 11 | 12 | 11 | 11 | 11 | 6 | 24 | 33 |
Swell 2 Height (m) Direction Period (s) | E 14 | S 14 | S 5 | SSE 9 | E 12 | SSE 9 | SSE 9 | S 11 | S 10 | S 9 | SE 15 | S 8 | SSE 11 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | S 12 | S 8 | SSE 9 |
| kJ | 4 | 243 | 7 | 48 | 3 | 31 | 28 | 35 | 29 | 14 | 8 | 12 | 11 | 12 | 10 | 10 | 10 | 10 | 11 | 5 | 8 |
Swell 3 Height (m) Direction Period (s) | ESE 14 | E 13 | E 13 | SSW 5 | SE 15 | S 10 | SSW 10 | SW 10 | SSE 10 | SSE 9 | E 12 | SSE 10 | SW 10 | SW 9 | SW 8 | W 10 | SW 9 | SW 10 | SSE 10 | SSE 10 | S 7 |
| kJ | 66 | 3 | 3 | 9 | 9 | 19 | 42 | 25 | 18 | 8 | 11 | 9 | 4 | 3 | 3 | 2 | 3 | 4 | 9 | 9 | 4 |
Wind waves Height (m) Direction Period (s) | SSW 4 | SSW 4 | SW 4 | SW 4 | SSW 12 | SSW 5 | SSW 5 | SSW 5 | — | SW 6 | SSW 8 | SW 6 | NE 2 | — | — | — | — | — | — | — | — |
| kJ | 3 | 43 | 16 | 16 | 415 | 42 | 37 | 46 | — | 109 | 103 | 77 | 1 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 15 | 491 | 13 | 15 | 535 | 28 | 0 | 0 | 54 | 0 | 76 | 0 | 146 | 64 | 50 | 15 | 17 | 76 | 15 | 92 | 38 |
Best forecast wave conditions in Kanagawa | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
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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 Osaki 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 Osaki Surf forecast
The above surf forecast table for Osaki provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Osaki can be found by selecting the local surf guide option on the grey menu. Our Osaki 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 (Osaki) 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 Osaki 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.
Osaki is 2 km (1 miles) from the city of Zushi. If you plan a holiday in Kanagawa, look for hotels and other accommodation in Zushi. Zushi has rooms for a wide range of budgets as well as car hire and transport links.
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