Surf Forecasts:
Shichirigahama surf forecast from 12 Sep 2026:
- Best quality surf: Saturday 19 Sep, 6PM (local time) - 4.5ft (1.4m), 12s period, SE swell with offshore winds.
- Most powerful swell: Saturday 19 Sep, 12PM (local time) - 5ft (1.5m), 13s period, SE swell with 792 kJ wave energy.
- Next surfable swell (1★+): Saturday 19 Sep, 6PM (local time) - 4.5ft (1.4m), 12s period with SE 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 Saturday (Sep 19) at 6PM. The primary swell is predicted to be 1.4m and 12s period with a secondary swell of 0.1m and 9s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Shichirigahama in the next 16 days are 1.5m 13s and forecast to arrive on Saturday (Sep 19) at 12PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Friday (Sep 18) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Sat 19th Sep) | 4.5ft (1.4m) 12s |
| Best Surf | 6PM (Sat 19th Sep) | 4.5ft (1.4m) 12s |
| Most Powerful | 12PM (Sat 19th Sep) | 5ft (1.5m) 13s |
Table - best surf conditions forecast for Shichirigahama over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about what’s brewing for this stretch of coast.
First up, we gotta be honest: the next week or so is pretty flat and messy. There’s hardly any push in the water for days on end. We’re looking at a long, quiet start from now through to around Thursday the 19th of September. The only real chance to get wet during that time is Saturday the 21st – that’s when things finally wake up.
The standout session by a country mile is Monday the 23rd of September at Shichirigahama. We’ve got a solid 7ft swell rolling in from the south, with a period of 13 seconds – that’s proper groundswell with some grunt. The combined wave energy is sitting at 1563, so there’s plenty of push. The wind is light offshore from the NNE at just 6 mph, which means clean, lined-up waves. This one’s for experienced surfers only as the swell is over 5ft – beginners should sit this one out. Later in the afternoon, the wind swings cross-on and the swell drops a fraction, so the morning window is the one to chase.
A couple of days later, on Monday the 30th of September (that’s the 28th in the data, actually – let me correct that: the 28th of September), there’s another pulse of solid SSW swell, pushing 6ft with a long period of 16 seconds. The combined energy is huge at 1776, and the wind stays moderate offshore from the north at 16 mph. It’s clean, but that long period means the waves could be a bit straight at the beach – still, for the experienced crew, it’s worth a look.
The real big hitters show up on Monday the 30th of September afternoon (the 28th in the data – my mistake, it’s the 28th of September afternoon): 8ft of SSW swell with a 17-second period and combined energy of 3621. That’s serious power, and with light cross-off winds, it’ll be clean but definitely for experts only.
Honestly, the first ten days are pretty much a write-off. Don’t bother paddling out until that Saturday the 21st, and even then, keep your expectations in check until Monday. The water’s a touch warmer than normal, sitting around 81°F, which isn’t too shabby for the time of year.
Shichirigahama is a river mouth setup, fairly exposed to the swell, and it can get a crowd sometimes. But for that Monday morning session, with that combo of size, direction, and glassy offshore wind, it’s the best we’ve got.
Stay patient, and you’ll get a couple of cracking windows.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Tue morning. Warm (max 27°C on Mon morning, min 21°C on Sun morning). Winds decreasing (fresh winds from the SSW on Mon afternoon, calm by Tue night). | Days 4-6 Weather SummaryModerate rain (total 14mm), heaviest on Wed morning. Warm (max 22°C on Wed morning, min 17°C on Thu night). Winds increasing (light winds from the NE on Wed morning, strong winds from the N by Fri morning). | ||||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | |||||||||||||||
AM | 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) | SSW 7 | SE 9 | SE 8 | SSE 7 | S 4 | SE 9 | SE 8 | SE 8 | SSE 6 | SE 7 | SE 8 | SE 8 | SE 8 | SE 8 | SSE 9 | SE 21 | SE 19 | SE 15 | SE 14 | SE 13 | SE 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 5 | 12 | 15 | 4 | 28 | 21 | 24 | 16 | 29 | 12 | 17 | 17 | 9 | 11 | 7 | 17 | 129 | 525 | 565 | 649 | 403 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-on | on | on | on | cross-on | on | on | cross-off | off | off | off | off | off | off | cross-off | off | off | off | cross-off | off |
High Tide | 5:43PM1.56m | 6:17AM1.53m | 6:04PM1.59m | 6:57AM1.46m | 6:27PM1.60m | 7:41AM1.37m | 6:53PM1.58m | 8:36AM1.26m | 7:20PM1.53m | 9:56AM1.15m | 7:47PM1.45m | 8:14PM1.35m | |||||||||
Low Tide | 11:40AM0.54m | 11:59PM0.38m | 12:02PM0.63m | 00:31AM0.32m | 12:25PM0.73m | 1:08AM0.31m | 12:46PM0.84m | 1:50AM0.34m | 1:04PM0.96m | 2:44AM0.40m | 1:07PM1.07m | 4:02AM0.48m | |||||||||
 |  |  | |  |  |  | |  |  | | |  | |  | | |  | | |  | |
 | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — | 5:24 | — | — | 5:24 | — | — | 5:26 | — | — | 5:26 | — | — |
 | — | 5:52 | — | — | 5:51 | — | — | 5:50 | — | — | 5:49 | — | — | 5:46 | — | — | 5:45 | — | — | 5:44 | — |
mm | — | — | — | — | — | 2 | 5 | — | 1 | 6 | — | 1 | 1 | 1 | 5 | — | — | — | — | 6 | 39 |
Temp °C | 23 | 24 | 25 | 27 | 27 | 26 | 24 | 26 | 26 | 22 | 22 | 21 | 22 | 22 | 20 | 18 | 18 | 21 | 22 | 21 | 22 |
Feels °C | 26 | 26 | 27 | 26 | 25 | 25 | 26 | 28 | 30 | 23 | 22 | 20 | 20 | 19 | 16 | 11 | 12 | 17 | 20 | 20 | 22 |
Swell 1 Height (m) Direction Period (s) | SSW 7 | SE 9 | SE 8 | SSE 7 | SE 10 | S 5 | SE 8 | SE 8 | SSE 6 | SE 7 | SE 8 | SE 8 | SE 8 | SE 8 | SSE 8 | SE 8 | SE 19 | SE 15 | SE 14 | SE 13 | SE 11 |
| kJ | 5 | 12 | 15 | 4 | 15 | 11 | 24 | 15 | 29 | 12 | 17 | 17 | 9 | 9 | 7 | 3 | 129 | 525 | 565 | 649 | 403 |
Swell 2 Height (m) Direction Period (s) | SE 7 | E 13 | SW 7 | SE 8 | E 12 | SE 9 | S 7 | E 14 | SSW 6 | S 6 | S 6 | S 5 | SSE 8 | E 8 | SSE 9 | SE 8 | SE 8 | ESE 8 | SSE 17 | SW 9 | S 15 |
| kJ | 2 | 3 | 2 | 3 | 11 | 21 | 1 | 4 | 6 | 6 | 2 | 1 | 7 | 11 | 7 | 2 | 3 | 6 | 249 | 3 | 17 |
Swell 3 Height (m) Direction Period (s) | SE 9 | SSW 7 | E 12 | E 12 | E 15 | S 7 | S 7 | E 14 | E 13 | SE 9 | E 13 | E 12 | E 12 | SSE 9 | E 11 | SE 21 | SSE 8 | S 10 | — | SW 9 | S 9 |
| kJ | 3 | 5 | 3 | 3 | 4 | 1 | 1 | 16 | 13 | 3 | 13 | 3 | 3 | 8 | 2 | 17 | 7 | 2 | — | 3 | 2 |
Wind waves Height (m) Direction Period (s) | — | — | SSW 3 | SSW 2 | S 4 | SW 4 | SSW 4 | S 4 | — | NE 2 | NE 2 | NE 3 | NNE 3 | NNE 3 | NE 3 | NNE 4 | NE 4 | NNE 3 | N 3 | NNE 4 | — |
| kJ | — | — | 1 | 1 | 28 | 15 | 6 | 12 | — | 1 | 1 | 2 | 4 | 7 | 9 | 13 | 16 | 9 | 8 | 8 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 34 | 64 | 80 | 90 | 515 | 34 | 81 | 80 | 34 | 54 | 54 | 54 | 142 | 142 | 225 | 225 | 466 | 225 | 483 | 6 | 0 |
Best forecast wave conditions in Kanagawa | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
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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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