SwellByte

Shonan Surf Forecast

Free surf forecast for Shonan, Japan — 1 surf spot. Wave height, swell, wind, tide and live buoy conditions with a 16-day outlook, no subscription, updated daily on SwellByte.

Best surf spot in Shonan by day

Top-rated of 1 spot each day

Surf spots in Shonan

Best wind spot in Shonan

Where the wind is best for kitesurfing, wing foiling and windsurfing over the next few days — rated on cross-shore direction and strength in knots, not on waves.

  • Mon 14 SeptKugenumaFresh, onshore, gusty, best around 15:00
  • Tue 15 SeptKugenumaModerate, cross-onshore, best around 00:00
  • Wed 16 SeptKugenumaModerate, cross-onshore, best around 00:00
  • Tue 22 SeptKugenumaModerate, cross-onshore, best around 18:00

Monthly conditions in Shonan

How often each surf size shows up by month, 2020–2024, measured near Kugenuma. Bars fill from the bottom by the share of days reaching each surf size; white at the top is smaller days. The percentage is the chance of a surfable day.

2–4ft4–6ft6–8ft8–12ft12ft+
Jan
9%
Feb
20%
Mar
25%
Apr
27%
May
23%
Jun
13%
Jul
13%
Aug
27%
Sep
24%
Oct
17%
Nov
27%
Dec
23%
Swell period
7s
9s
9s
10s
9s
8s
8s
10s
9s
11s
9s
8s
Water temp
62°F
60°F
61°F
63°F
66°F
71°F
77°F
82°F
80°F
75°F
71°F
65°F