Surf Forecasts:
Shichirigahama surf forecast from 26 Aug 2026:
- Best quality surf: Tuesday 1 Sep, 12PM (local time) - 3ft (0.9m), 13s period, S swell with offshore winds.
- Most powerful swell: Wednesday 2 Sep, 3AM (local time) - 4ft (1.2m), 12s period, SSW swell with 461 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 12PM (local time) - 2.5ft (0.8m), 6s period with SSW 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 Thursday (Aug 27) at 12PM. The primary swell is predicted to be 0.8m and 6s period with a secondary swell of 0.6m and 6s. Another secondary swell of 0.4m and 11s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Shichirigahama in the next 16 days are 1.2m 12s and forecast to arrive on Wednesday (Sep 02) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Monday (Aug 31) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Thu 27th Aug) | 2.5ft (0.8m) 6s |
| Best Surf | 12PM (Tue 1st Sep) | 3ft (0.9m) 13s |
| Most Powerful | 3AM (Wed 2nd Sep) | 4ft (1.2m) 12s |
Table - best surf conditions forecast for Shichirigahama over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s break it down for this stretch of coast. The long-range picture is a bit of a mixed bag, with a lot of onshore wind and very ordinary conditions, but there is a glimmer of something way out there that’s worth waiting for.
The opening window is a real slow burn. The first few days don't offer much to get excited about. We have some small, short-period swell around, but the wind is mostly on it or just messy. The water is sitting at 82°, which is about normal for this time of year, so at least the dips are warm.
For the first recommendation, we have to look ahead to Tuesday the 1st of September. Shichirigahama is the call. This river-mouth setup is inconsistent, but it’s our best bet early on. The wind goes cross-offshore from the ENE in the afternoon, which is a major positive. Swell is a knee-to-waist high 3 ft from the South at 12 seconds, a clean groundswell. The combined energy is moderate (301), so there’s a bit of push. The water is still warm and the crowd factor is a "sometimes", so you might have some company, but it’s worth a look. The earlier morning on the 1st has a similar 3 ft swell but a moderate offshore wind, making it a decent backup session.
Things get a bit trickier after that. From the 2nd through the 7th, it’s a long stretch of onshore winds and poor surf conditions. The swell picks up on the 3rd with 5 ft to 6 ft from the South, but it’s hammered by strong onshore SSW winds, making it lumpy and poor. This is more of a kite-surfing setup than a paddle-friendly one. There’s a lot of energy in the water (603 on the 3rd), but it’s completely wasted for us.
The real standout is the session on Tuesday the 8th of September. Both morning and afternoon are looking clean. The wind is light and cross-offshore from the East, and the swell is a solid 4 ft from the South at 12 seconds. The combined energy is strong (350-398). This is a proper groundswell with good shape. The water remains warm. It’s a full week and a half away, so while it’s the best on offer, keep an eye on the forecast as it gets closer.
The following day, Wednesday the 9th, is also a beaut. The wind goes glassy, with almost no breeze, and the swell holds at 4-4 ft from the South. This will be a dreamy session with clean, lined-up waves. The combined energy of all swells directed here is strong (393-398), so there is plenty of juice to get you into the wave. For a break that’s inconsistent, seeing two days of clean, decent-sized swell is a real treat.
The run ends on the 10th with the wind turning back onshore again, and the swell goes to a longer 16-second period, but the onshore wind ruins it. That long period would be great for a point break, but not here with the wind.
So, to sum it up: the start is a write-off, the middle is a battle with the wind, but the 8th and 9th of September are the sessions to mark on your calendar. Be patient.
Rusty.
Short Range ForecastModerate rain (total 12mm), heaviest on Thu night. Warm (max 31°C on Wed afternoon, min 24°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 5mm), mostly falling on Sat night. Warm (max 28°C on Sun afternoon, min 24°C on Sat afternoon). Wind will be generally light. | |||||||||||||||||||
Wed 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | ||||||||||||||
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 12 | SSW 11 | SSW 6 | S 11 | S 10 | SSW 6 | SW 6 | SSW 5 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 5 | SSW 6 | SSW 14 | SSW 12 | S 10 | S 13 | S 12 | S 12 |
Wave Graph | ||||||||||||||||||||
137 | 68 | 36 | 55 | 45 | 61 | 54 | 16 | 20 | 12 | 12 | 11 | 31 | 103 | 36 | 30 | 98 | 202 | 295 | 453 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | off | on | glassy | glassy | off | cross-off | glassy | off | on | on | cross-on | cross-off | off | off | off | cross-off | cross |
High Tide | 5:16PM1.46m | 4:04AM1.47m | 5:28PM1.47m | 4:44AM1.53m | 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 | |||||||
Low Tide | 10:42PM0.89m | 10:52AM0.27m | 11:05PM0.77m | 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 | |||||||
— | — | 5:09 | — | — | 5:09 | — | — | 5:11 | — | — | 5:11 | — | — | 5:11 | — | — | 5:13 | — | — | |
6:17 | — | — | 6:16 | — | — | 6:15 | — | — | 6:14 | — | — | 6:13 | — | — | 6:10 | — | — | 6:09 | — | |
mm | — | — | 2 | 2 | 8 | — | — | — | — | 1 | 3 | — | — | — | 1 | — | — | — | — | 5 |
Temp °C | 31 | 29 | 28 | 26 | 26 | 26 | 27 | 27 | 26 | 25 | 24 | 25 | 28 | 28 | 24 | 25 | 25 | 27 | 28 | 27 |
Feels °C | 33 | 31 | 32 | 25 | 27 | 30 | 32 | 31 | 27 | 28 | 26 | 27 | 31 | 32 | 24 | 27 | 27 | 28 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | SSW 12 | SSW 11 | S 6 | S 11 | S 10 | S 6 | SSW 8 | SSW 5 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSE 10 | SSW 6 | S 6 | SSW 6 | S 10 | S 13 | S 12 | S 12 |
137 | 68 | 24 | 55 | 45 | 19 | 53 | 16 | 20 | 12 | 12 | 11 | 10 | 43 | 20 | 10 | 98 | 202 | 295 | 453 | |
Swell 2 Height (m) Direction Period (s) | SSE 9 | SSE 9 | SSE 9 | SE 10 | SSW 6 | S 9 | SSE 10 | S 8 | SSE 11 | SSE 11 | SSE 10 | SSE 10 | S 8 | SSE 10 | SSW 14 | SSW 12 | SSE 10 | SSE 10 | SE 10 | SE 10 |
49 | 31 | 28 | 24 | 10 | 14 | 9 | 12 | 11 | 12 | 10 | 10 | 1 | 10 | 36 | 30 | 9 | 9 | 4 | 4 | |
Swell 3 Height (m) Direction Period (s) | E 12 | S 10 | SW 10 | SW 10 | SSE 10 | SSE 9 | SW 9 | SSE 10 | — | E 11 | SE 10 | E 11 | — | S 13 | SSE 10 | S 11 | E 12 | — | E 11 | E 10 |
3 | 19 | 25 | 15 | 9 | 8 | 3 | 9 | — | 10 | 4 | 2 | — | 13 | 10 | 20 | 3 | — | 2 | 2 | |
Wind waves Height (m) Direction Period (s) | SSW 4 | SSW 5 | SSW 6 | SSW 6 | — | SSW 6 | SW 6 | — | — | — | — | — | SSW 5 | SSW 6 | NE 3 | NE 2 | NE 3 | NNE 3 | — | — |
28 | 39 | 36 | 28 | — | 61 | 54 | — | — | — | — | — | 31 | 103 | 2 | 1 | 1 | 1 | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 23 | 23 | 10 | 34 | 34 | 0 | 0 | 42 | 54 | 64 | 54 | 20 | 519 | 8 | 42 | 3 | 0 | 0 | 0 | 15 |
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.











