Shonan Surf Break

Lat Long: 35.32° N 139.44° E

Shonan 48 hour detailed Surf Forecast

Issued: 2 pm 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Shonan sea temperature is
26.8° C
0.1° 

Shonan surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Shonan today (20 Aug):

  • Afternoon surf: Afternoon surf (20 Aug, local time) - 0.5ft (0.2m), 9s period with SSW swell.
  • Evening surf: Evening surf (20 Aug, local time) - 0.5ft (0.2m), 8s period with SSW swell.

The current surf forecast for Shonan at 9PM is: 0.2m 8s primary swell from a South-southwest direction and 0.1m 11s secondary swell from a Southeast direction, 0.3m 3s secondary swell from a South direction (forecast issued at 02:00pm August 20). The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (20 Aug)--
Afternoon (20 Aug)0.5ft (0.2m)9s
Evening (20 Aug)0.5ft (0.2m)8s

Table - waves today at Shonan. (Swell directed towards the surf break)


Short Range Forecast

Moderate rain (total 11mm), heaviest on Sat night. Warm (max 28°C on Thu afternoon, min 24°C on Sat night). Wind will be generally light.

Thu
20
Friday
21
Saturday
22
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
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.2
SSE
6
0.2
SSW
9
0.2
SSW
9
0.2
SSW
8
0.2
S
10
0.4
SSW
9
0.4
SSW
9
0.4
SSW
9
0.7
S
9
0.8
S
9
0.9
SSW
4
0.8
SSW
9
0.4
SSW
9
0.4
SSW
10
0.4
SSW
9
0.4
SSW
9
0.4
SSW
9
0.4
SSW
9
0.4
SSW
9
0.4
SSW
9
Wave Graph
Metric surfscale
Energy kJ
4
8
8
7
8
25
27
27
78
101
27
106
35
36
34
32
32
32
32
32
Wind (km/h)
15
S
15
S
15
S
15
SSW
15
SSW
15
SSW
10
SW
10
S
20
S
25
S
25
SSW
20
SW
20
SW
10
SW
5
WSW
5
SSE
10
S
15
S
15
S
5
SSW
Wind State
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
glassy
on
on
on
glassy
High Tide
10:11AM1.02m
8:20PM1.36m
8:48PM1.29m
Low Tide
1:46PM0.94m
4:30AM0.52m
6:10AM0.53m
clear
cloud
cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
thunderstorm
clear
part cloud
clear
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:05
5:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:25
6:24
6:22
 mm
1
1
3
Temp °C
28
28
27
26
26
25
26
27
27
27
27
26
26
26
26
27
28
28
27
27
Feels °C
31
30
29
28
29
28
30
30
28
28
28
28
28
29
30
31
31
31
30
32
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Shonan 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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