Surf Forecasts:
Shichirigahama surf forecast from 28 Aug 2026:
- Most powerful swell: Thursday 3 Sep, 12PM (local time) - 3ft (0.9m), 11s period, S swell with 189 kJ wave energy.
Best Forecast Surf Conditions for Shichirigahama this week:
The most powerful waves expected at Shichirigahama in the next 16 days are 0.9m 11s and forecast to arrive on Thursday (Sep 03) at 12PM. 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 Saturday (Sep 05) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 12PM (Thu 3rd Sep) | 3ft (0.9m) 11s |
Table - best surf conditions forecast for Shichirigahama over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s coming down the line for Shichigahama (Shichirigahama).
To be straight with you, this stretch of the coast is looking like a write-off for the next couple of weeks. There’s nothing really rideable on offer. We’ve got a solid 16-day window ahead, but the first decent bit of surf doesn’t even show up until... well, it doesn’t really show up. The whole stretch is a long, flat gap. You’re looking at a good week and a half of near-flat conditions, maybe a knee-high ripple here and there, but nothing that’s going to get you out of bed.
We kick off on Saturday 29 August with a tiny 1ft SSW swell, period a short 7 seconds, and the wave energy is weak at 29. Combine that with a cross-off breeze, and it’s just messy and small. That’s the story for days. Saturday afternoon drops even smaller to 0.7ft. Sunday the 30th is more of the same – 1ft in the morning, 0.7ft in the afternoon. Offshore wind keeps it clean, but clean and flat is still flat.
Monday the 31st and Tuesday the 1st of September are still poor. A bit of onshore wind starts kicking in, and the swell never gets over 1ft. By Wednesday the 2nd and Thursday the 3rd, the combined energy creeps up a little (into the 60s, even 148 on Thursday morning), but that’s still weak to moderate energy. The swell hits 2ft on Thursday morning from the SSW at 11 seconds, but the wind is onshore strong from the SSW at 15-18 mph, so it’s messy. No bueno.
The following weekend, 5-6 September, offers a brief moment of glassy conditions on Sunday morning, with a 2ft SE swell and a short 8-second period. Those of you who are desperate might paddle out, but with combined energy at 82, it’s still really weak and inconsistent. That’s about as good as it gets, and that’s not saying much.
Into the second week, the pattern holds. Monday 7 September has a 3ft SSE swell with an 8-second period, but the wind is onshore. Tuesday 8th fades back to 2ft. By Thursday 10 September the wind cranks up to 40 mph from the SSW, with a 2ft SE swell and 11-second period. That’s dangerous and ugly, and the wave energy is only moderate at 120.
The last few days (11-13 September) bring clean offshore winds from the NNE and NE, but the swell is tiny – 2ft at best with a long 13-second period on the 11th. That groundswell period at Shichirigahama, being a river mouth and a fairly exposed beach, means it’ll break straight and close out. Still not worth it.
Bottom line: there’s no standout session, no best on offer. It’s a long blank run. For this area, a flat spell like this is pretty normal. Keep an eye on it – forecasts can change, but for now, leave the board in the car.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Fri night. Warm (max 28°C on Fri night, min 21°C on Sat afternoon). Winds decreasing (fresh winds from the NNE on Sat afternoon, calm by Sun afternoon). | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Mon night. Warm (max 28°C on Tue morning, min 26°C on Mon night). Winds increasing (light winds from the SW on Mon night, fresh winds from the SSW by Thu afternoon). | ||||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | ||||||||||||||
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 | SSW 7 | SSE 11 | SSW 8 | SSW 8 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSW 10 | SSW 10 | SSW 10 | SSW 9 | S 9 | S 10 | S 10 | SSW 11 | SSW 11 | SSW 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 40 | 18 | 12 | 11 | 11 | 10 | 10 | 9 | 9 | 19 | 38 | 35 | 48 | 43 | 65 | 125 | 128 | 93 | 123 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | off | off | off | off | off | off | on | on | cross-on | on | on | on | cross-on | on | on | on | on |
High Tide | 5:22AM1.55m | 5:58PM1.52m | 6:00AM1.54m | 6:18PM1.55m | 6:40AM1.50m | 6:40PM1.58m | 7:22AM1.41m | 7:05PM1.57m | 8:12AM1.30m | 7:32PM1.55m | 9:15AM1.18m | 7:59PM1.49m | |||||||
Low Tide | 11:29PM0.65m | 11:43AM0.38m | 11:57PM0.54m | 12:07PM0.47m | 00:28AM0.45m | 12:30PM0.58m | 1:04AM0.40m | 12:53PM0.70m | 1:45AM0.39m | 1:14PM0.83m | 2:34AM0.42m | 1:27PM0.97m | |||||||
 |  | |  |  |  |  | |  | | | |  | | |  | | |  | |
 | — | 5:11 | — | — | 5:11 | — | — | 5:11 | — | — | 5:13 | — | — | 5:13 | — | — | 5:15 | — | — |
 | 6:15 | — | 6:14 | — | — | 6:13 | — | — | 6:10 | — | — | 6:09 | — | — | 6:07 | — | — | 6:07 | — |
mm | 5 | 1 | 3 | 2 | — | — | — | — | — | 1 | — | — | — | — | — | 2 | — | — | — |
Temp °C | 28 | 24 | 22 | 21 | 23 | 24 | 25 | 26 | 27 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 29 | 27 | 20 | 19 | 24 | 26 | 28 | 29 | 29 | 31 | 30 | 29 | 30 | 29 | 29 | 28 | 28 | 28 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 7 | SSW 7 | SSW 7 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 10 | SSW 10 | SSW 10 | SSW 9 | S 9 | S 10 | S 10 | SSW 11 | SSW 11 | SSW 10 |
| kJ | 40 | 18 | 9 | 11 | 11 | 6 | 6 | 6 | 6 | 19 | 38 | 35 | 48 | 43 | 65 | 125 | 128 | 93 | 123 |
Swell 2 Height (m) Direction Period (s) | SSE 10 | SSE 11 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSW 12 | SSE 10 | SE 10 | SE 10 | SSW 12 | SE 10 | SSW 13 | SSE 6 | SE 10 | SE 7 |
| kJ | 9 | 11 | 12 | 10 | 10 | 10 | 10 | 9 | 9 | 15 | 9 | 4 | 4 | 14 | 4 | 18 | 16 | 4 | 22 |
Swell 3 Height (m) Direction Period (s) | SE 13 | — | SSW 8 | ESE 6 | E 6 | — | E 5 | — | S 10 | SSE 9 | E 12 | E 12 | E 11 | SE 10 | E 10 | SE 11 | SE 10 | ESE 9 | SE 10 |
| kJ | 7 | — | 6 | 6 | 1 | — | 1 | — | 2 | 9 | 11 | 11 | 2 | 4 | 2 | 4 | 4 | 17 | 4 |
Wind waves Height (m) Direction Period (s) | — | — | NE 2 | NNE 3 | — | — | — | — | — | SSW 3 | — | S 2 | S 3 | — | S 3 | — | — | SSE 7 | — |
| kJ | — | — | 2 | 1 | — | — | — | — | — | 2 | — | 1 | 1 | — | 3 | — | — | 62 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 3 | 54 | 54 | 225 | 58 | 58 | 60 | 60 | 81 | 34 | 13 | 81 | 34 | 80 | 81 | 90 | 90 | 139 | 89 |
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.
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