Shichirigahama Surf Break

Lat Long: 35.30° N 139.51° E

Shichirigahama Surf Forecast and Surf Report

Issued: 8 am 23 Aug 2026 (local time)

Forecast update in  hr  min

Today's Shichirigahama sea temperature is
27.2°C
0.4° 

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


Shichirigahama surf forecast from 23 Aug 2026:

  • Best quality surf: Monday 24 Aug, 6AM (local time) - 1.5ft (0.5m), 16s period, SSE swell with glassy winds.
  • Most powerful swell: Tuesday 25 Aug, 3AM (local time) - 5ft (1.6m), 14s period, SSE swell with 1,045 kJ wave energy.
  • Next surfable swell (1★+): Monday 24 Aug, 6AM (local time) - 1.5ft (0.5m), 16s period with SSE swell.

Best Forecast Surf Conditions for Shichirigahama this week:

The surf forecast for Shichirigahama over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 24) at 6AM. The primary swell is predicted to be 0.5m and 16s period with a secondary swell of 0.5m and 12s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Shichirigahama in the next 16 days are 1.6m 14s and forecast to arrive on Tuesday (Aug 25) at 3AM. Winds are predicted to be onshore at the time the swell arrives.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Mon 24th Aug)1.5ft (0.5m) 16s
Best Surf 6AM (Mon 24th Aug)1.5ft (0.5m) 16s
Most Powerful 3AM (Tue 25th Aug)5ft (1.6m) 14s

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


The Lowdown

Alright, let’s break it down. Rusty here.

First week and a half is a total bust. From Sunday August 23rd right through the end of August, there’s nothing doing. Swell is tiny, wind is junk, it’s all onshore slop. You’re looking at a gap of about nine days with no real surf.

Things finally turn around on Tuesday morning, September 1st, at Shichirigahama (Shichigahama). This river break starts showing some life. Swell picks up to about 4ft out of the south, period at 14 seconds—that’s proper groundswell with good energy behind it (576). Wind is light offshore from the northeast, so the waves will be clean and lined up. Good call for intermediates.

Wednesday September 2nd keeps that same size and direction—4ft south swell, 14-second period, combined energy at 597. Wind stays offshore from the north-northeast at about 16 mph, a little breezier but still clean. The sets will be spaced out, making it easier to get out back.

Thursday September 3rd is the real standout. Morning and afternoon both fire. You’ve got around 4ft of SSW swell, period going from 14 seconds up to 15 seconds in the afternoon—that’s long-period groundswell with serious push. Combined energy climbs to 704 then 814. Wind is strong offshore from the northeast at 16 mph, so the surf will be groomed and glassy. For a river break, this longer period is a bonus—shapes up really well. Crowds can show up here sometimes, so plan accordingly.

Friday September 4th is still rideable—4ft SSW swell, 14-second period—but the wind cranks to 19 mph offshore in the morning, getting fresh. Afternoon goes cross-off from the east-northeast, still clean but not as crisp. Energy stays high (917 and 965), just not the same quality as Thursday.

Then it all falls apart. Saturday September 5th sees a big 7ft SSW swell roll in, but the wind goes nuts—28 mph cross-shore from the east-southeast, then 34 mph cross-onshore. That’s blown out, choppy, and way too big for anyone but experts. Combined energy hits 2792, which is strong, but conditions are a mess. The rest of the outlook is small, onshore junk.

Water temp is around 81°F, about normal for this time of year.

So here’s the take: Thursday September 3rd at Shichirigahama is your best bet. Wednesday and Tuesday are solid backups. Everything before that, don’t bother.

Keep an eye on the forecast, things can shift. Rusty out.

Short Range Forecast

Mostly dry. Warm (max 29°C on Tue morning, min 25°C on Sun night). Winds increasing (calm on Sun night, fresh winds from the S by Tue afternoon).

Days 4-6 Weather Summary

Moderate rain (total 15mm), heaviest on Fri morning. Warm (max 29°C on Wed afternoon, min 23°C on Thu night). Winds decreasing (fresh winds from the SSW on Wed afternoon, calm by Fri night).

Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
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
1
0
0
1
0
0
0
0
0
0
0
0
0
0
0
1
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)
0.4
SSW
9
0.3
SE
13
0.5
SE
13
0.6
SSE
18
0.9
SSE
17
1.4
SSE
14
1.4
SSE
13
1.4
S
13
1.3
S
13
1
S
12
1.6
SSW
13
0.8
SSW
12
0.6
SSW
11
0.6
S
8
0.6
S
8
0.6
S
8
0.9
SSW
8
0.6
SSW
10
0.7
SSW
10
0.6
S
9
0.5
S
8
Wave Graph
Metric surfscale
Energy kJ
25
27
82
260
486
756
722
653
560
276
786
161
84
51
50
51
109
71
102
60
36
Wind (km/h)
15
ENE
15
S
10
S
5
S
20
S
20
SW
15
SSW
30
S
20
SSW
20
SSW
35
SSW
20
SSW
20
SW
15
SSW
10
WSW
10
NE
15
SSW
10
N
20
NNE
15
E
20
NNE
Wind State
cross-off
cross-on
on
on
on
on
on
on
on
on
on
on
cross-on
on
cross-on
off
on
off
off
cross-off
off
High Tide
4:48PM1.36m
00:49AM1.28m
4:54PM1.41m
2:21AM1.33m
5:05PM1.44m
3:19AM1.40m
5:16PM1.46m
4:04AM1.47m
5:28PM1.47m
4:44AM1.53m
5:42PM1.49m
5:22AM1.55m
5:58PM1.52m
Low Tide
9:21PM1.20m
9:06AM0.32m
9:56PM1.11m
9:48AM0.27m
10:20PM1.01m
10:23AM0.25m
10:42PM0.89m
10:52AM0.27m
11:05PM0.77m
11:19AM0.31m
11:29PM0.65m
11:43AM0.38m
11:57PM0.54m
part cloud
part cloud
part cloud
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
light rain
light rain
mod rain
rain showers
clear
rain showers
cloud
cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:05
5:07
5:07
5:09
5:09
5:09
5:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:22
6:20
6:19
6:17
6:16
6:15
6:14
 mm
1
1
6
6
1
1
Temp °C
28
27
26
27
28
27
29
29
27
28
29
28
27
28
27
24
26
26
27
27
25
Feels °C
31
29
30
29
30
29
30
29
27
28
28
28
28
29
29
27
29
30
27
28
27
  • 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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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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