
Surf Forecasts:
Shichirigahama surf forecast from 10 Sep 2026:
- Most powerful swell: Tuesday 15 Sep, 3AM (local time) - 2ft (0.6m), 8s period, SSE swell with 54 kJ wave energy.
Best Forecast Surf Conditions for Shichirigahama this week:
The most powerful waves expected at Shichirigahama in the next 16 days are 0.6m 8s and forecast to arrive on Tuesday (Sep 15) at 3AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Thursday (Sep 17) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 3AM (Tue 15th Sep) | 2ft (0.6m) 8s |
Table - best surf conditions forecast for Shichirigahama over the next 16 days.
The Lowdown
Alright, grab your board, let’s have a look at what’s coming up. It’s a bit of a slow burn out there, but there’s light at the end of the tunnel.
The start of this stretch is pretty gutless. We’ve got a long run of small, weak surf that just isn’t going to get your heart racing. From Thursday the 10th right through to the 18th, we’re looking at ankle-biters and knee-high dribble, mostly under 3ft. The offshore winds are keeping things clean, but with energy readings mostly in the double digits, like 102 on Thursday afternoon, there’s just nothing behind it. The water is a touch warmer than normal for this time of year, sitting at around 82°, which is nice, but you’ll be doing more floating than surfing. It’s a whole week of not much, so you might want to find something else to do.
Then the game changes. Friday the 18th sees a pulse of long-period energy arrive in the afternoon, but the wind is howling from the north at 22 mph and the swell is still messy. Skip that. The real action starts on Saturday the 19th. That’s when we get a proper groundswell showing up. The morning sees 7ft of south-southeast swell with a 16-second period. The combined energy jumps to 4012, which is a massive increase from what we’ve seen. The NNE wind is fresh, so it’ll be blown a bit, but it’s offshore. This is where it starts to get interesting for the crew that likes it raw. The afternoon holds at 8ft, still with that long-period energy.
The standout, without a doubt, is Sunday the 20th. Sunday afternoon is the one to circle. We’re talking 11ft of south swell, a 16-second period, and the energy reading is a massive 7225. That is a serious amount of water moving. The wind drops to a gentle offshore from the north, which is going to make Shichirigahama (Japan) look pretty special. This is big, powerful, groundswell. This is for experts only. If you’re not confident in big surf, this is the day to be on the beach watching. This is the true standout of the whole period. It’s a lot of water, so be smart.
The energy eases back on Monday the 21st, with 6ft of south-southeast swell and an 11-second period in the morning, still with clean offshore wind. It’s a good follow-up day, but it’s not the same level as Sunday. After that, it fades quickly. Tuesday the 22nd is back to small and sloppy with a strong cross-onshore breeze, and the rest of the week just dribbles away back to nothing.
So, there you have it, a week of nothing, then a big pulse of life. Get your big-wave board ready for the 20th. That’s the one. Everything else, you can take or leave.
Rusty
Short Range ForecastHeavy rain (total 20mm), heaviest during Fri morning. Warm (max 23°C on Sun morning, min 19°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Mon morning, min 23°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Thu 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | ||||||||||||||||||||
Wave Height (m) Direction Period (s) | S 8 | S 8 | S 8 | S 8 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | SSE 9 | SE 8 | SE 7 | SE 9 | SE 9 | SE 9 | SSE 8 | SE 8 | SE 7 | SSE 6 | SSE 8 | SSE 8 |
Wave Graph | ||||||||||||||||||||
68 | 45 | 28 | 28 | 19 | 19 | 11 | 9 | 8 | 16 | 12 | 19 | 42 | 27 | 37 | 18 | 17 | 16 | 27 | 26 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | off | off | off | cross-on | on | on | on | on | glassy | on | off | off | off | off |
High Tide | 4:57PM1.47m | 4:26AM1.51m | 5:10PM1.49m | 5:03AM1.54m | 5:25PM1.52m | 5:39AM1.55m | 5:43PM1.56m | 6:17AM1.53m | 6:04PM1.59m | 6:57AM1.46m | 6:27PM1.60m | 7:41AM1.37m | 6:53PM1.58m | |||||||
Low Tide | 10:42PM0.73m | 10:54AM0.39m | 11:05PM0.60m | 11:18AM0.46m | 11:30PM0.48m | 11:40AM0.54m | 11:59PM0.38m | 12:02PM0.63m | 00:31AM0.32m | 12:25PM0.73m | 1:08AM0.31m | 12:46PM0.84m | 1:50AM0.34m | |||||||
— | — | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — | 5:24 | — | — | |
5:57 | — | — | 5:55 | — | — | 5:53 | — | — | 5:52 | — | — | 5:51 | — | — | 5:50 | — | — | 5:49 | — | |
mm | — | 4 | 10 | 4 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 21 | 20 | 19 | 20 | 20 | 20 | 21 | 21 | 23 | 25 | 25 | 27 | 27 | 26 | 26 | 27 | 25 | 23 | 24 | 23 |
Feels °C | 19 | 19 | 20 | 20 | 20 | 19 | 21 | 21 | 25 | 28 | 29 | 29 | 27 | 27 | 29 | 28 | 26 | 23 | 25 | 23 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 8 | S 8 | S 8 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | SSE 9 | SE 8 | SE 7 | SE 9 | SE 9 | SE 9 | SSE 8 | SE 8 | SE 7 | SSE 6 | SSE 8 | SSE 8 |
68 | 45 | 28 | 28 | 19 | 19 | 11 | 9 | 8 | 16 | 12 | 19 | 42 | 27 | 37 | 15 | 17 | 16 | 27 | 26 | |
Swell 2 Height (m) Direction Period (s) | ESE 9 | SE 9 | S 9 | SE 10 | SE 10 | SE 10 | SE 10 | SE 9 | SSW 7 | SSW 7 | S 7 | S 7 | E 12 | S 7 | S 7 | — | S 9 | SE 9 | SSE 8 | E 12 |
17 | 3 | 1 | 4 | 4 | 4 | 4 | 3 | 5 | 5 | 1 | 1 | 12 | 1 | 1 | — | 2 | 3 | 7 | 3 | |
Swell 3 Height (m) Direction Period (s) | E 15 | E 16 | SE 10 | S 8 | S 8 | E 14 | E 14 | E 13 | E 13 | E 13 | E 12 | E 12 | E 15 | S 7 | S 7 | E 12 | S 7 | E 13 | E 13 | S 8 |
17 | 5 | 4 | 1 | 1 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 4 | 1 | 1 | 3 | 1 | 3 | 13 | 1 | |
Wind waves Height (m) Direction Period (s) | NE 3 | NE 2 | — | NNE 2 | — | — | — | — | — | — | — | — | S 3 | S 4 | W 3 | S 4 | SSW 4 | — | — | — |
2 | 1 | — | 1 | — | — | — | — | — | — | — | — | 4 | 7 | 1 | 18 | 5 | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 4 | 54 | 78 | 54 | 54 | 54 | 54 | 54 | 20 | 34 | 22 | 81 | 34 | 22 | 34 | 20 | 54 | 54 | 54 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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.










