Surf Forecasts:
Shichirigahama surf forecast from 28 Aug 2026:
- Best quality surf: Friday 28 Aug, 9PM (local time) - 3ft (0.9m), 6s period, SW swell with offshore winds.
- Most powerful swell: Thursday 3 Sep, 3PM (local time) - 4.5ft (1.4m), 10s period, S swell with 424 kJ wave energy.
- Next surfable swell (1★+): Friday 28 Aug, 9PM (local time) - 3ft (0.9m), 6s period with SW 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 Friday (Aug 28) at 9PM. The primary swell is predicted to be 0.9m and 6s period with a secondary swell of 0.8m and 6s. Another secondary swell of 0.2m and 10s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Shichirigahama in the next 16 days are 1.4m 10s and forecast to arrive on Thursday (Sep 03) at 3PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 2s period and expected on Saturday (Aug 29) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Fri 28th Aug) | 3ft (0.9m) 6s |
| Best Surf | 9PM (Fri 28th Aug) | 3ft (0.9m) 6s |
| Most Powerful | 3PM (Thu 3rd Sep) | 4.5ft (1.4m) 10s |
Table - best surf conditions forecast for Shichirigahama over the next 16 days.
The Lowdown
Alright, let’s run it back in feet and miles per hour.
So, Rusty again. The forecast is a tough one to swallow. We’re looking at a big, empty gap in the calendar. The first time you might even think about paddling out is Monday the 7th of September, and that’s not a sure thing. Before that, we’ve got over a week of flat, messy, or blown-out shite. Water’s warm, about 83°, which is a touch warmer than usual for the year.
Let’s get to the only real highlights. The absolute best is Thursday the 10th of September. The morning at Shichigahama (Shichirigahama) is the call. We’ve got a solid 6 ft swell from the SSE with a long period of 15 seconds, pumping out a ton of energy (1526). The wind is offshore from the NNE at 16 mph, so it’s going to be clean and lined up. That size is over 5 ft, so keep the beginners out of the water. It’s powerful, it’s clean, and it’s for the experienced crew only.
Friday the 11th of September morning is the other window. A 5 ft south swell with a 13-second period, and the wind is light offshore from the NNE at just 6 mph. That’s nearly glassy conditions (energy of 936). The waves will have shape, and the energy is there. It’s slightly smaller than Thursday, but the trade-off is the cleaner, lighter wind. For a river break, those long-period swells can be tricky, but on a morning like this, it’ll be one of the better sessions in a long while.
Everything else is a write-off. You’ve got glassy mornings on the 30th and 31st of August, but the swell is a paltry 0.7 ft. Not even worth the walk to the beach. The rest of the time it’s onshore, messy, or just plain tiny. If you have a kite, maybe wait for the onshore days. For a surfboard, your only real window is the 10th and 11th of September. Mark it down, but keep your expectations in check for the long-range stuff.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Fri night. Warm (max 29°C on Fri night, min 21°C on Sat afternoon). Winds decreasing (fresh winds from the WSW on Fri morning, calm by Sun night). | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Tue morning. Warm (max 28°C on Mon afternoon, min 25°C on Mon morning). Winds increasing (calm on Mon night, fresh winds from the S by Wed afternoon). | ||||||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | |||||||||||||||
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 6 | SSW 6 | SSW 7 | SSW 7 | SSW 8 | SSW 8 | SSE 10 | SSE 10 | SSW 8 | SSE 10 | S 4 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | S 10 | SSW 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 45 | 70 | 34 | 18 | 19 | 12 | 10 | 10 | 11 | 9 | 14 | 60 | 77 | 78 | 102 | 106 | 131 | 184 | 155 | 424 | 214 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | off | off | cross-off | off | off | glassy | glassy | glassy | on | on | cross-on | on | on | on | on | on | on | on | on |
High Tide | 5:42PM1.49m | 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 | 11:19AM0.31m | 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 | ||||||||
 | |  |  | |  | |  |  | |  |  |  | |  | | | | | |  | |
 | 5:09 | — | — | 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 | — | — | 1 | 2 | 1 | — | — | — | — | — | — | — | 1 | — | 2 | — | — | — | — | — | 3 |
Temp °C | 28 | 28 | 29 | 24 | 22 | 22 | 24 | 25 | 25 | 27 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 28 | 28 | 32 | 25 | 21 | 22 | 26 | 28 | 29 | 29 | 29 | 28 | 30 | 30 | 29 | 29 | 27 | 27 | 27 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | S 9 | S 9 | SSW 7 | SSW 7 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 7 | SSW 12 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SE 10 | SSE 6 |
| kJ | 14 | 13 | 34 | 18 | 19 | 12 | 6 | 6 | 11 | 5 | 14 | 60 | 77 | 78 | 102 | 106 | 131 | 184 | 155 | 4 | 16 |
Swell 2 Height (m) Direction Period (s) | SSE 9 | SSE 9 | SSE 10 | SSE 11 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 9 | SSE 10 | SE 10 | SE 10 | SE 10 | ESE 7 | SE 7 | SE 7 | SE 10 | SE 10 |
| kJ | 8 | 8 | 9 | 11 | 12 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 4 | 4 | 4 | 4 | 7 | 15 | 15 | 4 |
Swell 3 Height (m) Direction Period (s) | SW 9 | SE 15 | W 8 | — | SSW 8 | E 6 | SE 4 | SE 4 | — | S 11 | E 13 | E 12 | E 11 | ESE 12 | ESE 11 | SE 6 | SE 9 | SE 9 | SE 9 | — | S 13 |
| kJ | 3 | 8 | 1 | — | 11 | 1 | 1 | 1 | — | 2 | 3 | 3 | 2 | 13 | 12 | 2 | 3 | 3 | 3 | — | 3 |
Wind waves Height (m) Direction Period (s) | SSW 6 | SSW 6 | WNW 3 | NE 2 | — | E 3 | — | — | — | SSW 4 | S 4 | SSW 4 | — | S 2 | — | — | S 3 | — | S 3 | S 10 | SSW 10 |
| kJ | 45 | 70 | 1 | 1 | — | 1 | — | — | — | 3 | 12 | 7 | — | 1 | — | — | 2 | — | 5 | 424 | 214 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 81 | 23 | 42 | 104 | 54 | 58 | 58 | 20 | 60 | 78 | 81 | 10 | 23 | 81 | 10 | 81 | 81 | 23 | 90 | 1429 | 840 |
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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