Surf Forecasts:
Shichirigahama surf forecast from 12 Aug 2026:
- Best quality surf: Saturday 15 Aug, 6AM (local time) - 1.5ft (0.5m), 12s period, S swell with cross-offshore winds.
- Most powerful swell: Saturday 15 Aug, 6AM (local time) - 1.5ft (0.5m), 12s period, S swell with 70 kJ wave energy.
- Next surfable swell (1★+): Saturday 15 Aug, 6AM (local time) - 1.5ft (0.5m), 12s period with S 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 Saturday (Aug 15) at 6AM. The primary swell is predicted to be 0.5m and 12s period with a secondary swell of 0.4m and 5s. Another secondary swell of 0.7m and 5s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Shichirigahama in the next 16 days are 0.5m 12s and forecast to arrive on Saturday (Aug 15) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Sunday (Aug 16) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Sat 15th Aug) | 1.5ft (0.5m) 12s |
| Best Surf | 6AM (Sat 15th Aug) | 1.5ft (0.5m) 12s |
| Most Powerful | 6AM (Sat 15th Aug) | 1.5ft (0.5m) 12s |
Table - best surf conditions forecast for Shichirigahama over the next 16 days.
The Lowdown
Alright folks, Rusty here, lookin’ at the charts for our little stretch of coast.
Well, I gotta be straight with you – we’re in for a tough run. Looking through the whole 16-day window, the surf is gonna be tiny and pretty ordinary. The wave energy is weak, barely tickling the coast for most of it. There’s a solid two-week stretch where you’re not going to get a decent wave worth paddling for. It’s a classic flat spell for this area.
We've got Shichigahama, this river-mouth setup, but for the first week and a half, you’re looking at nothing but knee-high slop. Swell heights are stuck between 0.7 ft and 2 ft. That combined swell energy is mostly in the doldrums, with values like 55, 38, and 31 (weak) – just not enough push. You’ll see some clean conditions with offshore winds on Thursday morning (August 13th) and a few glassy moments, but there’s just no wave to ride. It’s a real kick in the guts.
Now, the tail end of the forecast is where it gets a little interesting, but we’ve gotta wait. Around Thursday, August 27th, we see the biggest bump of the period. The swell finally lifts to a 4 ft wave from the SSE, and the combined energy jumps to 257 (moderate wave energy). That's the only one that’s even got a pulse. The problem is, the wind is howling straight onshore from the South at 19 mph, with a “fresh breeze” and choppy conditions. It’s going to be a messy, bumpy close-out on that river mouth. Honestly, that setup looks a lot more interesting for the kite surfers than us paddle guys. For us, it’s a pass.
No standouts here, mates. The best you can hope for is a few tiny, clean waves on the glassy mornings if you’re desperate to get wet, but there’s nothing to get excited about. Forecasts can change, but for now, this is a lean period. Hang loose and wait for the next one.
Rusty.
Short Range ForecastHeavy rain (total 39mm), heaviest during Fri night. Warm (max 28°C on Thu afternoon, min 24°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 29°C on Sat afternoon, min 23°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Wed 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | ||||||||||||||
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 10 | SSW 10 | S 10 | SSW 10 | SSW 9 | SSW 9 | SSW 9 | S 12 | S 11 | S 10 | SSW 9 | SSW 9 | SSW 9 | SE 10 | SSW 9 | SSW 9 | SSW 8 | SSW 8 | E 9 | SSE 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 59 | 39 | 50 | 31 | 28 | 16 | 28 | 25 | 63 | 54 | 29 | 29 | 29 | 28 | 28 | 16 | 14 | 14 | 13 | 10 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | off | off | glassy | off | off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | off | cross-off | cross-on | cross-on | cross-on | on | on |
High Tide | 5:45PM1.45m | 4:21AM1.49m | 5:58PM1.47m | 5:02AM1.53m | 6:14PM1.49m | 5:42AM1.54m | 6:33PM1.51m | 6:22AM1.51m | 6:54PM1.54m | 7:05AM1.44m | 7:19PM1.55m | 7:52AM1.34m | 7:45PM1.54m | |||||||
Low Tide | 11:02PM0.93m | 11:16AM0.20m | 11:27PM0.82m | 11:43AM0.25m | 11:54PM0.70m | 12:09PM0.32m | 00:25AM0.60m | 12:34PM0.42m | 1:01AM0.53m | 1:00PM0.55m | 1:41AM0.48m | 1:24PM0.69m | 2:29AM0.47m | |||||||
 |  | | | | | | |  |  |  |  | |  | | | | | | | |
 | — | — | 4:58 | — | — | 4:58 | — | — | 5:00 | — | — | 5:01 | — | — | 5:01 | — | — | 5:01 | — | — |
 | 6:35 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — | — | 6:29 | — | — | 6:28 | — |
mm | 6 | 3 | 1 | 3 | 7 | 2 | 2 | 14 | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 25 | 27 | 28 | 27 | 28 | 28 | 26 | 28 | 29 | 26 | 27 | 28 | 25 | 26 | 27 | 25 | 26 | 26 | 26 |
Feels °C | 29 | 26 | 28 | 31 | 30 | 29 | 31 | 29 | 29 | 29 | 26 | 26 | 27 | 26 | 28 | 28 | 26 | 27 | 26 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 10 | SSW 10 | S 10 | SSW 10 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | S 11 | S 10 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | SSW 8 |
| kJ | 59 | 39 | 50 | 31 | 28 | 16 | 28 | 16 | 63 | 54 | 29 | 29 | 29 | 28 | 28 | 16 | 14 | 14 | 7 | 7 |
Swell 2 Height (m) Direction Period (s) | SSE 5 | SSE 5 | SE 11 | E 10 | SE 9 | SE 5 | SE 5 | SE 5 | SE 8 | SSE 8 | SE 8 | SSE 8 | ESE 10 | SE 10 | ESE 10 | SE 11 | SE 10 | SE 10 | SE 10 | SSE 10 |
| kJ | 10 | 7 | 5 | 2 | 12 | 4 | 4 | 3 | 23 | 27 | 20 | 6 | 20 | 26 | 10 | 5 | 4 | 4 | 4 | 10 |
Swell 3 Height (m) Direction Period (s) | SE 10 | SE 12 | — | SE 12 | S 12 | S 12 | SE 11 | S 12 | SSE 9 | ESE 10 | ESE 10 | ESE 10 | SSE 11 | SSE 11 | SSE 11 | ESE 10 | SE 7 | S 7 | E 9 | E 8 |
| kJ | 4 | 5 | — | 5 | 11 | 11 | 5 | 25 | 16 | 9 | 10 | 11 | 12 | 12 | 12 | 10 | 2 | 1 | 13 | 5 |
Wind waves Height (m) Direction Period (s) | SE 5 | — | NNE 2 | — | — | NNE 2 | — | SE 5 | — | — | — | NE 2 | — | — | — | — | SSE 3 | SE 5 | S 3 | SSW 3 |
| kJ | 32 | — | 1 | — | — | 1 | — | 16 | — | — | — | 1 | — | — | — | — | 1 | 1 | 2 | 7 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 15 | 3 | 4 | 20 | 3 | 42 | 20 | 3 | 466 | 3 | 4 | 42 | 4 | 3 | 42 | 42 | 42 | 54 | 80 | 80 |
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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