Surf Forecasts:
Shichirigahama surf forecast from 4 Aug 2026:
- Best quality surf: Wednesday 5 Aug, 12PM (local time) - 7ft (2.2m), 15s period, SSE swell with offshore winds.
- Most powerful swell: Wednesday 5 Aug, 9AM (local time) - 7ft (2.2m), 15s period, SSE swell with 2,348 kJ wave energy.
- Next surfable swell (1★+): Wednesday 5 Aug, 12PM (local time) - 7ft (2.2m), 15s period with SSE 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 Wednesday (Aug 05) at 12PM. The primary swell is predicted to be 2.2m and 15s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Shichirigahama in the next 16 days are 2.2m 15s and forecast to arrive on Wednesday (Aug 05) at 9AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Wednesday (Aug 05) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Wed 5th Aug) | 7ft (2.2m) 15s |
| Best Surf | 12PM (Wed 5th Aug) | 7ft (2.2m) 15s |
| Most Powerful | 9AM (Wed 5th Aug) | 7ft (2.2m) 15s |
Table - best surf conditions forecast for Shichirigahama over the next 16 days.
The Lowdown
Righto, gather 'round. Rusty here, looking at the stretch ahead for this part of the coast. We've got a bit of a slow burn to work with, so let's break it down.
The main feature is a solid pulse of south-southeast groundswell that builds in the first week, delivering the best conditions for experienced surfers, before fading out into a long, quiet period with only small, weak waves for the rest of the outlook.
Shichirigahama is the only break on the cards, and it's a river-mouth setup that's pretty exposed to the swell. The opening days are messy with cross-off winds and a combined wave energy swinging between moderate and strong (1350-2348). It's a river, remember, so those long-period swells (15-16 seconds) can wrap in nicely, but it also makes it prone to breaking a bit straight in the shifty zones. The water's a touch warmer than normal for this time of year at 84°, feeling like summer has stuck around.
The standout window is from Wednesday, 5th August, rolling into Friday, 7th August. Friday morning (7th) is the real gem: we've got a clean 7ft swell from the south with a 15-second period, light cross-off winds from the northeast at just 6 mph, and the combined energy is powerful (2055). The forecast calls it excellent conditions for experienced surfers, and that's the call—this is solid, clean groundswell with good shape. Keep in mind, at 7ft it's getting into the zone that's best for those who know what they're doing, and with the river mouth being inconsistent, you'll want to pick your peak and be patient.
The following Thursday and Friday (13th and 14th August) drop off hard. The swell shrinks to 2-2ft, the energy is weak (108-180), and while the offshore wind tries to clean things up, the surf is just ordinary. There's a long gap of small, poor surf from the 15th all the way to the end of the outlook period. Around the 18th and 19th, a tiny 2ft to 4ft swell pops up from the southeast with fresh offshore winds, but the energy is pathetic (88-360) and it's really only for a longboard if you're desperate. The second week is a write-off.
So, if you're chasing something decent, point your board at Shichirigahama on Friday morning (7th August). The rest of the run is quiet, but that's how it goes sometimes. Keep an eye on the charts, things can change.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Thu night. Warm (max 30°C on Thu morning, min 23°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Fri night. Warm (max 30°C on Sun afternoon, min 24°C on Sun night). Winds increasing (calm on Sat morning, fresh winds from the NNE by Mon morning). | |||||||||||||||||||
Tue 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | ||||||||||||||
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) | SE 16 | SE 16 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | S 14 | S 14 | S 15 | S 15 | S 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 15 | SSW 16 | SSW 16 | SSW 16 | SSW 15 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1347 | 2107 | 2348 | 2090 | 1809 | 1519 | 1809 | 1999 | 1933 | 1907 | 1504 | 1189 | 1172 | 939 | 899 | 936 | 754 | 798 | 691 | 461 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | cross-off | cross-off | cross-off | on | cross-off | cross-off | on | cross-on | cross | on | cross-off | cross-off | cross-off | off | off | off | off |
High Tide | 8:29PM1.48m | 9:35AM1.12m | 9:01PM1.45m | 11:35AM1.03m | 9:37PM1.40m | 10:28PM1.35m | 5:09PM1.29m | 11:56PM1.32m | 5:08PM1.37m | 1:34AM1.33m | 5:20PM1.42m | 2:44AM1.38m | ||||||||
Low Tide | 3:24AM0.54m | 2:16PM0.86m | 4:41AM0.53m | 2:02PM1.01m | 6:19AM0.48m | 7:46AM0.40m | 8:22PM1.25m | 8:49AM0.30m | 9:37PM1.20m | 9:36AM0.23m | 10:13PM1.12m | |||||||||
 |  |  | |  | | |  | | |  | | | | | | | | |  | |
 | — | — | 4:52 | — | — | 4:52 | — | — | 4:54 | — | — | 4:54 | — | — | 4:56 | — | — | 4:56 | — | — |
 | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — |
mm | — | — | — | — | — | — | — | 3 | — | — | 1 | — | — | — | — | — | — | — | — | 1 |
Temp °C | 28 | 24 | 26 | 29 | 27 | 30 | 29 | 27 | 29 | 29 | 28 | 28 | 29 | 26 | 29 | 30 | 26 | 26 | 27 | 26 |
Feels °C | 25 | 22 | 25 | 31 | 29 | 33 | 31 | 30 | 32 | 31 | 31 | 31 | 31 | 28 | 29 | 31 | 25 | 22 | 24 | 23 |
Swell 1 Height (m) Direction Period (s) | SE 16 | SE 16 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | S 14 | S 14 | S 15 | S 15 | S 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 15 | SSW 16 | SSW 16 | SSW 16 | SSW 15 |
| kJ | 1347 | 2107 | 2348 | 2090 | 1809 | 1519 | 1809 | 1999 | 1933 | 1907 | 1504 | 1189 | 1172 | 939 | 899 | 936 | 754 | 798 | 691 | 461 |
Swell 2 Height (m) Direction Period (s) | E 13 | — | — | — | — | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | SE 9 | SE 12 | ESE 12 | ESE 12 | ESE 14 | ESE 14 | SW 18 | E 12 | E 12 | E 11 |
| kJ | 3 | — | — | — | — | 80 | 116 | 154 | 122 | 100 | 388 | 5 | 15 | 29 | 41 | 37 | 157 | 12 | 11 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | ESE 12 | S 16 | SE 8 | SE 16 | E 13 | SE 14 | SE 14 | S 20 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 127 | 5 | 59 | 10 | 13 | 8 | 8 | 8 |
Wind waves Height (m) Direction Period (s) | — | — | NNE 4 | — | — | — | — | — | — | SE 9 | — | — | — | — | — | — | ENE 3 | NNE 3 | NNE 3 | NE 3 |
| kJ | — | — | 22 | — | — | — | — | — | — | 281 | — | — | — | — | — | — | 2 | 10 | 4 | 9 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 42 | 487 | 548 | 10 | 4 | 4 | 22 | 0 | 0 | 51 | 42 | 4 | 51 | 0 | 15 | 0 | 42 | 2070 | 2059 | 1027 |
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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