
Surf Forecasts:
Shichirigahama surf forecast from 11 Sep 2026:
- Most powerful swell: Friday 18 Sep, 3PM (local time) - 5.5ft (1.7m), 17s period, SSE swell with 1,497 kJ wave energy.
Best Forecast Surf Conditions for Shichirigahama this week:
The most powerful waves expected at Shichirigahama in the next 16 days are 1.7m 17s and forecast to arrive on Friday (Sep 18) at 3PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Friday (Sep 18) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 3PM (Fri 18th Sep) | 5.5ft (1.7m) 17s |
Table - best surf conditions forecast for Shichirigahama over the next 16 days.
The Lowdown
Yo, crew, Rusty here. Let's have a look at what's cookin' at Shichigahama.
Alright, I'm gonna be straight with you – we're in for a bit of a wait. The first week or so is a total bust. From Friday the 11th right through to Thursday the 17th, it's a whole lot of nothing. Tiny waves, and when there is a ripple, the conditions are just poor. It's a proper flat spell. Don't even bother waxing up.
Now, things finally start to stir on Friday the 18th. We see a solid jump in swell energy, with the combined energy hitting 645. It's a 4ft SE groundswell with a very long 16-second period, and we've got a fresh offshore wind from the North at 19 mph. That sounds clean, but the report says it's marginal, likely due to tide. By the afternoon, that swell bumps up to 6ft from the SSE with a 17-second period – that's a serious groundswell, and the energy jumps to 1542. Still fresh offshore winds, but the wave comment still says it's a bit questionable. For the experienced guys, this could be worth a paddle.
The main event looks like it's setting up for Saturday the 19th. The morning brings a solid 7ft SSE swell, period 14 seconds, and a moderate offshore NNE breeze at 12 mph. The combined energy is a powerful 1469. The report calls it "excellent surf conditions for experienced surfers," and that's the word. This is a strong, clean groundswell – best for a point or reef setup. Being a river mouth, it might barrel a bit, but that period is long enough to make it a bit straight at a beach break. Still, for the crew who know what they're doing, this is the standout of the first week. The afternoon holds similar size at 7ft.
Sunday the 20th is still pumping with a clean 5ft S swell and a light offshore breeze in the morning – still very good conditions for the competent surfer.
After that, there's another drop-off, but then we get a second pulse from the 25th of September. Friday the 25th afternoon looks insane: a 6ft SSE swell with a 16-second period, and it's *glassy* – zero wind. The combined energy is a massive 1692. The report says "excellent surf conditions for experienced surfers." That's another big, long-period groundswell with perfect conditions. Then Saturday the 26th morning is the biggest of the run: a 7ft SSE swell with a 16-second period and a gentle offshore wind – energy is a massive 2325. That is proper heavy. This is strictly for the experienced chargers; it'll be a beast. The afternoon gets even bigger at 8ft but picks up a cross-shore wind, so the morning is your window.
So, to sum it up: the first week is a write-off. The two true standouts are Saturday the 19th with that clean, powerful offshore swell, and then the glassy Friday the 25th afternoon. The 26th has the biggest size but is for experts only. Keep an eye on the long-range; it looks promising.
Rusty.
Short Range ForecastHeavy rain (total 45mm), heaviest during Fri morning. Warm (max 25°C on Sun afternoon, min 19°C on Fri morning). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 11mm), heaviest on Wed night. Warm (max 27°C on Mon afternoon, min 22°C on Wed night). Winds decreasing (fresh winds from the S on Mon afternoon, calm by Wed afternoon). | ||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | |||||||||||||||
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) | S 8 | S 8 | SSW 8 | SSW 7 | SSW 7 | SSW 7 | SE 9 | SE 8 | SE 7 | SE 9 | SE 10 | SE 9 | SSE 8 | SE 8 | SE 7 | SSE 7 | SSE 8 | SE 8 | SE 8 | SSE 9 | SSE 21 |
Wave Graph | |||||||||||||||||||||
28 | 28 | 19 | 18 | 18 | 9 | 13 | 18 | 14 | 19 | 14 | 29 | 40 | 31 | 23 | 19 | 26 | 17 | 9 | 8 | 42 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | off | cross-on | on | on | on | on | on | on | on | glassy | glassy | cross-off | off | off | cross-off |
High Tide | 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 | 8:36AM1.26m | 7:20PM1.53m | ||||||||
Low Tide | 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 | 1:04PM0.96m | 2:44AM0.40m | |||||||
5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — | 5:24 | — | — | 5:24 | — | — | |
— | 5:55 | — | — | 5:53 | — | — | 5:52 | — | — | 5:51 | — | — | 5:50 | — | — | 5:49 | — | — | 5:46 | — | |
mm | 20 | 2 | 15 | 6 | 1 | 1 | — | — | — | — | — | — | — | — | 1 | — | 1 | 9 | 3 | 1 | — |
Temp °C | 19 | 20 | 20 | 20 | 21 | 21 | 24 | 25 | 24 | 26 | 27 | 26 | 27 | 27 | 25 | 24 | 24 | 23 | 21 | 21 | 21 |
Feels °C | 20 | 20 | 20 | 20 | 21 | 22 | 26 | 28 | 27 | 27 | 27 | 28 | 28 | 27 | 27 | 28 | 29 | 24 | 20 | 19 | 18 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 8 | SSW 8 | SSW 7 | SSW 7 | SSW 7 | SE 9 | SE 8 | SE 7 | SE 9 | SE 10 | SE 9 | SSE 8 | SE 8 | SE 7 | SSE 7 | SSE 8 | SE 8 | SSE 9 | SSE 9 | SE 8 |
28 | 28 | 19 | 18 | 18 | 9 | 13 | 18 | 14 | 19 | 14 | 29 | 40 | 31 | 23 | 19 | 26 | 17 | 8 | 8 | 11 | |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 9 | SSW 7 | SSW 7 | SW 7 | S 7 | E 12 | S 7 | S 7 | — | E 13 | SE 9 | E 13 | E 12 | SE 8 | ESE 7 | SSE 21 |
4 | 4 | 4 | 4 | 4 | 3 | 5 | 5 | 2 | 1 | 11 | 1 | 1 | — | 13 | 3 | 13 | 3 | 9 | 5 | 42 | |
Swell 3 Height (m) Direction Period (s) | S 9 | S 8 | S 8 | S 8 | E 14 | E 13 | E 13 | E 13 | — | E 12 | E 15 | S 7 | S 7 | — | S 7 | — | S 8 | — | E 12 | E 11 | SSE 8 |
1 | 1 | 1 | 1 | 4 | 4 | 3 | 3 | — | 3 | 4 | 1 | 1 | — | 1 | — | 1 | — | 3 | 2 | 7 | |
Wind waves Height (m) Direction Period (s) | — | — | NNE 2 | NNE 3 | NNE 2 | NNE 2 | — | — | — | — | S 4 | S 4 | — | S 2 | — | — | — | NE 2 | NNE 3 | N 3 | NNE 3 |
— | — | 1 | 1 | 1 | 1 | — | — | — | — | 12 | 7 | — | 1 | — | — | — | 1 | 1 | 5 | 6 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 54 | 58 | 54 | 59 | 54 | 34 | 20 | 20 | 54 | 22 | 81 | 34 | 34 | 81 | 34 | 22 | 20 | 54 | 59 | 142 | 65 |
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.










