Shichirigahama Surf Break

Lat Long: 35.30° N 139.51° E

Shichirigahama Surf Forecast and Surf Report

Issued: 8 am 18 Jul 2026 (local time)

Forecast update in  hr  min

Today's Shichirigahama sea temperature is
25.6° C
0.1° 

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


Shichirigahama surf forecast from 18 Jul 2026:

  • Most powerful swell: Tuesday 21 Jul, 6PM (local time) - 2.5ft (0.8m), 4s period, SSW swell with 26 kJ wave energy.

Best Forecast Surf Conditions for Shichirigahama this week:

The most powerful waves expected at Shichirigahama in the next 16 days are 0.8m 4s and forecast to arrive on Tuesday (Jul 21) at 6PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Thursday (Jul 23) at 3PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 6PM (Tue 21st Jul)2.5ft (0.8m) 4s

Table - best surf conditions forecast for Shichirigahama over the next 16 days.


The Lowdown

Alright folks, Rusty here. Let’s cut straight to it. We’re looking at Shichigahama, the river mouth, and honestly, the next week and a half is a bit of a bust for solid surfing. There’s a long dry spell before anything gets interesting.

The whole first week, from Saturday the 18th through to Sunday the 26th, is basically a write-off. The swell is tiny—anywhere from 0.3ft to 3ft—with periods all over the place, mostly short and weak. Combined energy is pathetic, reading between 9 and 66 (weak energy). Winds are mostly onshore or cross-onshore, keeping the surface messy. There’s a brief moment on Wednesday the 22nd morning with glassy conditions, but there’s no swell to ride. Just a flat, clean lake out there.

Then we hit Monday the 27th of July. Things start looking up. A new SSE groundswell pushes through, with a 4ft swell at 16 seconds on Monday morning. Energy jumps to 880 (moderate). That’s not huge, but the long period means shape and power, especially for a river mouth like this. Conditions are clean with a light SSW breeze on it. The water temp is a warm 78°, about average for this time of year. Keep in mind, Shichigahama can be inconsistent—it doesn’t always fire—and it *can* get crowded sometimes. But for that Monday morning, it’s your best bet. By the afternoon, the wind picks up onshore and kills it.

Tuesday the 28th has a bigger 8ft morning swell from the SSE at 14 seconds, and the energy is strong (2046). That’s solid, but remember: anything over 8ft is expert territory. This is borderline. The wind might still be light, but it’s onshore. Not perfect.

The standout is likely Wednesday the 29th. Swell hits 10ft from the S with a 16-second period, and energy is very strong (4371). The wind is light cross-onshore in the morning, so it should be rideable for experienced surfers. That’s the biggest solid window of the whole forecast, and it’s got the period to match. At those heights, it’s strictly for the crew that knows what they’re doing.

After that, Thursday the 30th and Friday the 31st keep big swell (10ft–12ft), but winds get messy, cross-onshore or strong onshore, with thunderstorms possible. By the first of August, a strong breeze and near-gale winds blow it all to shit. For kite surfers, that Saturday the 1st might look interesting with 28–31 mph cross-onshore winds and 5ft swell, but for paddle surfing? Forget it.

So here’s the takeaway: the first 9 days are a total dud. The real window is Monday 27th to Wednesday 29th. Wednesday morning 29th is your best shot—big S groundswell, long period, light winds, and a river mouth that can handle it. Don’t sleep on it, but don’t take a beginner.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 28°C on Mon morning, min 25°C on Sat night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 5mm), mostly falling on Tue night. Warm (max 29°C on Tue morning, min 24°C on Thu night). Wind will be generally light.

Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
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
Wave
Height (m)
Direction
Period (s)
0.3
SE
9
0.3
SE
8
0.3
SE
8
0.3
SE
8
0.7
S
4
0.2
S
8
0.2
SSE
9
0.7
S
4
0.6
SSW
4
0.6
SW
4
0.7
SSW
4
0.6
SSW
4
0.3
SSW
4
0.2
SSE
7
0.4
SSW
4
0.2
SSE
10
0.2
SSE
10
0.3
SE
10
0.2
SSE
9
0.2
SSE
9
0.3
SE
11
Wave Graph
Metric surfscale
Energy kJ
12
11
10
9
12
5
7
13
14
14
17
15
4
5
6
15
10
15
12
11
18
Wind (km/h)
10
SSE
15
S
15
S
15
S
25
S
10
SSW
5
S
20
S
15
SSW
5
SSW
25
SSW
10
SSW
5
SW
20
S
5
ESE
20
NE
10
SSE
15
ENE
10
E
10
SSW
10
S
Wind State
cross-on
on
cross-on
on
cross-on
on
glassy
on
on
on
on
on
glassy
on
cross
cross-off
cross-on
cross-off
cross-off
on
cross-on
High Tide
7:45PM1.45m
7:12AM1.37m
8:13PM1.45m
8:06AM1.27m
8:44PM1.45m
9:09AM1.15m
9:18PM1.42m
10:39AM1.04m
9:55PM1.40m
10:41PM1.37m
5:19PM1.20m
11:42PM1.34m
Low Tide
1:02PM0.26m
1:31AM0.73m
1:34PM0.39m
2:21AM0.67m
2:05PM0.55m
3:19AM0.62m
2:35PM0.72m
4:33AM0.58m
2:58PM0.89m
6:01AM0.51m
7:24AM0.41m
6:26PM1.19m
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
thunderstorm
clear
clear
thunderstorm
clear
part cloud
rain showers
clear
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:39
4:39
4:41
4:41
4:41
4:43
4:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:55
6:54
6:54
6:53
6:52
6:52
6:52
 mm
1
3
1
1
Temp °C
27
27
26
27
27
27
28
28
28
29
29
28
29
28
28
29
29
26
26
27
25
Feels °C
30
29
28
28
28
29
32
30
30
33
31
31
34
31
33
32
32
28
29
30
28
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Shichirigahama Surf forecast

The above surf forecast table for Shichirigahama provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Shichirigahama can be found by selecting the local surf guide option on the grey menu. Our Shichirigahama surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Shichirigahama) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Shichirigahama may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Shichigahama is 6 km (4 miles) from the city of Chigasaki. If you plan a holiday in Kanagawa, look for hotels and other accommodation in Chigasaki. Chigasaki has rooms for a wide range of budgets as well as car hire and transport links.

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