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Surf Forecasts:
Shonan surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 8 am Tuesday 09 Dec 2025 JSTForecast update in hr min s Forecast update imminent
Shonan surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Shonan sea temperature is
18.5° C
(Which is 1.2°C colder than average for this time of year)How big are the waves at Shonan today?
The current surf forecast for Shonan at 10AM is: 0.1m 9s primary swell from a Southeast direction and 0.1m 6s secondary swell from a Southwest direction (forecast issued at 08:00am December 09). An open ocean swell of 0.5m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (09 Dec) | 0.5ft (0.1m) | 9s |
| Afternoon (09 Dec) | 0.5ft (0.1m) | 9s |
| Evening (09 Dec) | 0.5ft (0.1m) | 10s |
Table - waves today at Shonan. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 09 | Wednesday 10 | Thursday 11 | Fri 12 | |||||||||||||||||||||
| 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 | 5 | 9 | 9 | 10 | 8 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 4 | 5 | 6 | 6 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 4 | 3 | 3 | 3 | 3 | 4 | 7 | 4 | 4 | 11 | 4 | 11 | 11 | 12 | 12 | 12 | 11 | 11 | 11 | 22 | 107 | 169 | 187 | 100 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross | cross | cross- off | cross- off | cross- off | cross- off | glass | on | glass | cross- off | off | off | cross- off | glass | cross- on | cross | cross | cross | cross | cross- off |
High Tide / height (m) | 8:38AM 1.35 | 6:34PM 1.42 | 9:21AM 1.30 | 7:29PM 1.29 | 10:04AM 1.28 | 8:41PM 1.15 | ||||||||||||||||||
Low Tide / height (m) | 1:23PM 1.03 | 2:00AM 0.21 | 2:25PM 0.98 | 2:45AM 0.38 | 3:44PM 0.92 | |||||||||||||||||||
Tuesday 09 | Wednesday 10 | Thursday 11 | Fri 12 | |||||||||||||||||||||
| Sunrise | - | 6:37 | - | - | - | - | - | - | - | 6:39 | - | - | - | - | - | - | - | 6:39 | - | - | - | - | - | - |
| Sunset | - | - | - | 4:29 | - | - | - | - | - | - | - | 4:29 | - | - | - | - | - | - | - | 4:29 | - | - | - | - |
 |  | |  | | |  | | | | | | |  | | | |  | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 10 | 10 | 11 | 12 | 12 | 11 | 11 | 9 | 8 | 9 | 11 | 12 | 12 | 12 | 11 | 10 | 9 | 10 | 13 | 14 | 14 | 14 | 14 | 11 |
| Feels °C (?) | 3 | 3 | 6 | 7 | 8 | 8 | 7 | 4 | 4 | 6 | 9 | 9 | 10 | 9 | 7 | 6 | 5 | 8 | 8 | 6 | 6 | 5 | 3 | 5 |
- 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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