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Surf Forecasts:
Shonan surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 2 pm Monday 15 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
18.1° 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 5PM is: 0.4m 9s primary swell from a Southeast direction and 0.2m 6s secondary swell from a South-southwest direction (forecast issued at 02:00pm December 15). The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | - | - |
| Afternoon (15 Dec) | 1.5ft (0.4m) | 9s |
| Evening (15 Dec) | 1ft (0.3m) | 8s |
Table - waves today at Shonan. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| 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) (?) | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 4 | 4 | 4 | 4 | 4 | 5 | 11 | 4 | 9 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 35 | 21 | 20 | 11 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 2 | 2 | 5 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | glass | on | cross- on | glass | off | off | glass | cross- off | glass | glass | cross- off | off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 12:43PM 1.32 | 3:18AM 1.17 | 1:22PM 1.34 | 4:04AM 1.25 | 2:00PM 1.37 | 4:41AM 1.31 | ||||||||||||||||||
Low Tide / height (m) | 8:10PM 0.43 | 7:47AM 0.98 | 8:48PM 0.32 | 8:42AM 1.00 | 9:24PM 0.23 | |||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:43 | - | - | - | - | - | - | - | 6:43 | - | - | - | - | - | - | - | 6:43 |
| Sunset | - | 4:30 | - | - | - | - | - | - | - | 4:30 | - | - | - | - | - | - | - | 4:30 | - | - | - | - | - | - |
 | |  | |  | | | | | | | | | | | | |  |  | | | | |  | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 13 | 13 | 11 | 9 | 8 | 8 | 7 | 7 | 9 | 10 | 11 | 10 | 10 | 9 | 9 | 9 | 11 | 12 | 11 | 11 | 10 | 9 | 8 | 9 |
| Feels °C (?) | 9 | 8 | 4 | 4 | 4 | 3 | 2 | 2 | 6 | 6 | 9 | 8 | 7 | 6 | 7 | 6 | 9 | 10 | 8 | 7 | 5 | 3 | 2 | 3 |
- 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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