Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Osaki surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 2 pm Thursday 18 Dec 2025 JSTForecast update in hr min s Forecast update imminent
Osaki surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Osaki sea temperature is
17.9° C
(Which is 1.1°C colder than average for this time of year)How big are the waves at Osaki today?
The current surf forecast for Osaki at 9PM is: 0.1m 7s primary swell from a Southwest direction and 0.1m 10s secondary swell from a East direction (forecast issued at 02:00pm December 18). The wind direction is predicted to be offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Dec) | - | - |
| Afternoon (18 Dec) | 0.5ft (0.2m) | 6s |
| Evening (18 Dec) | 0.5ft (0.1m) | 10s |
Table - waves today at Osaki. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | |||||||||||||||||||||
| 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) (?) | 6 | 6 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 6 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 4 | 4 | 2 | 2 | 2 | 2 | 2 | 5 | 4 | 5 | 5 | 5 | 28 | 104 | 164 | 91 | 118 | 148 | 182 | 219 | 198 | 198 | 204 | 263 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | off | off | off | off | off | off | off | off | off | off | glass | on | on | on | on | on | on | on | on | on | on |
High Tide / height (m) | 2:38PM 1.41 | 5:25AM 1.36 | 3:18PM 1.45 | 6:10AM 1.40 | 3:58PM 1.47 | 6:51AM 1.42 | ||||||||||||||||||
Low Tide / height (m) | 9:21AM 0.98 | 10:04PM 0.06 | 10:10AM 1.02 | 10:46PM -0.02 | 10:55AM 1.04 | 11:26PM -0.07 | ||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:43 | - | - | - | - | - | - | - | 6:45 | - | - | - | - | - | - | - | 6:46 |
| Sunset | - | 4:30 | - | - | - | - | - | - | - | 4:30 | - | - | - | - | - | - | - | 4:31 | - | - | - | - | - | - |
 |  |  | | | |  | | | | |  | |  | |  | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 2 | 1 | 2 | 2 | 1 | 2 | 4 | 2 | 2 | 1 |
| Temp. °C | 11 | 12 | 12 | 11 | 9 | 9 | 8 | 7 | 8 | 10 | 11 | 10 | 10 | 11 | 13 | 16 | 16 | 16 | 16 | 16 | 16 | 18 | 17 | 17 |
| Feels °C (?) | 6 | 6 | 6 | 5 | 3 | 4 | 3 | 1 | 3 | 7 | 8 | 7 | 8 | 9 | 12 | 13 | 12 | 13 | 14 | 13 | 12 | 13 | 11 | 13 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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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.
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