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Surf Forecasts:
Shonan surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 8 am Thursday 21 May 2026 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
20.1° C
(Which is slightly cooler than normal)How big are the waves at Shonan today?
The current surf forecast for Shonan at 2PM is: 1.5m 7s primary swell from a South direction and 1.3m 7s secondary swell from a South direction (forecast issued at 08:00am May 21). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 3ft (0.9m) | 6s |
| Afternoon (21 May) | 6.5ft (2.0m) | 7s |
| Evening (21 May) | 4ft (1.2m) | 8s |
Table - waves today at Shonan. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 16mm), heaviest on Thu afternoon. Warm (max 22°C on Thu morning, min 13°C on Fri afternoon). Winds decreasing (fresh winds from the N on Fri morning, light winds from the NE by Sat night). | ||||||||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
S 6 | S 6 | S 7 | SSW 7 | S 7 | S 8 | SSW 8 | S 8 | S 8 | S 8 | S 7 | S 7 | SSW 7 | SSW 7 | S 7 | S 7 | SE 11 | S 7 | SE 11 | SE 11 | S 7 | SE 6 | SE 6 | SE 6 | |
21 | 57 | 145 | 404 | 215 | 177 | 104 | 76 | 57 | 55 | 40 | 28 | 18 | 18 | 10 | 4 | 5 | 5 | 5 | 5 | 5 | 10 | 23 | 18 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-off | cross-off | |
High Tide | 6:17AM1.47m | 9:39PM1.30m | 7:09AM1.36m | 10:39PM1.27m | 8:20AM1.23m | 11:32PM1.27m | ||||||||||||||||||
Low Tide | 1:59PM0.12m | 2:09AM1.08m | 2:55PM0.27m | 3:37AM1.04m | 3:56PM0.43m | |||||||||||||||||||
 |  |  |  | |  | | | | | | | |  | | | | | | | | | | | |
 | 4:33 | — | — | — | — | — | — | 4:33 | — | — | — | — | — | — | — | 4:33 | — | — | — | — | — | — | — | 4:31 |
 | — | — | — | — | 6:43 | — | — | — | — | — | — | — | 6:44 | — | — | — | — | — | — | — | 6:44 | — | — | 6:45 |
1 | 1 | — | 6 | 1 | 1 | 1 | 1 | — | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 21 | 22 | 22 | 19 | 18 | 17 | 16 | 16 | 16 | 15 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 14 | 16 | 19 | 19 | 19 | 18 | 18 |
22 | 22 | 22 | 17 | 16 | 14 | 13 | 13 | 12 | 9 | 7 | 7 | 6 | 6 | 7 | 7 | 7 | 8 | 11 | 17 | 17 | 18 | 18 | 17 | |
Swell 1 Height (m) Direction Period (s) | SE 9 | ESE 9 | ESE 10 | S 7 | S 7 | S 8 | SSW 8 | S 8 | S 8 | S 8 | S 7 | S 7 | SSW 7 | SSW 7 | S 7 | S 7 | SE 11 | S 7 | SE 7 | N 3 | ESE 6 | SE 6 | E 12 | SE 6 |
 kJ | 14 | 56 | 63 | 220 | 215 | 177 | 104 | 76 | 57 | 55 | 40 | 28 | 18 | 18 | 10 | 4 | 5 | 4 | 2 | 1 | 4 | 10 | 3 | 18 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | ESE 10 | SE 10 | SE 10 | SE 10 | SE 11 | SE 9 | SE 10 | SE 11 | SE 11 | E 9 | E 11 | SW 8 | SE 8 | SE 7 | S 7 | SE 6 | S 7 | SE 11 | S 8 | SE 12 |
| kJ | — | — | — | — | 37 | 4 | 4 | 4 | 4 | 3 | 4 | 4 | 5 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 4 | 5 | 1 | 5 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | SE 11 | — | E 11 | — | SSE 7 | — | E 11 | E 9 | E 11 | S 6 | SE 11 | SE 11 | SE 11 | SE 11 | — | SE 12 | — |
| kJ | — | — | — | — | — | — | — | 5 | — | 2 | — | 9 | — | 2 | 2 | 2 | 1 | 5 | 5 | 5 | 5 | — | 6 | — |
Wind waves Height (m) Direction Period (s) | S 6 | S 6 | S 7 | SSW 7 | — | NE 3 | NE 3 | NE 3 | NNE 3 | NNE 3 | NNE 4 | NNE 4 | NNE 4 | NE 4 | NNE 4 | NNE 4 | NNE 4 | NNE 4 | NNE 4 | NE 3 | — | — | SE 6 | — |
| kJ | 21 | 57 | 145 | 404 | — | 2 | 4 | 5 | 4 | 7 | 17 | 26 | 29 | 24 | 20 | 13 | 12 | 10 | 10 | 2 | — | — | 23 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 88 | 482 | 95 | 2 | 47 | 47 | 47 | 2 | 138 | 138 | 138 | 501 | 461 | 544 | 747 | 793 | 790 | 790 | 878 | 878 | 65 | 747 | 29 | 29 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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