
Surf Forecasts:
Shichirigahama surf forecast from 4 Aug 2026:
- Best quality surf: Thursday 6 Aug, 12AM (local time) - 7.5ft (2.3m), 14s period, SSE swell with offshore winds.
- Most powerful swell: Wednesday 5 Aug, 6PM (local time) - 8ft (2.4m), 15s period, SSE swell with 2,576 kJ wave energy.
- Next surfable swell (1★+): Thursday 6 Aug, 12AM (local time) - 7.5ft (2.3m), 14s 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 Thursday (Aug 06) at 12AM. The primary swell is predicted to be 2.3m and 14s 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 2.4m 15s and forecast to arrive on Wednesday (Aug 05) at 6PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Wednesday (Aug 05) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Thu 6th Aug) | 7.5ft (2.3m) 14s |
| Best Surf | 12AM (Thu 6th Aug) | 7.5ft (2.3m) 14s |
| Most Powerful | 6PM (Wed 5th Aug) | 8ft (2.4m) 15s |
Table - best surf conditions forecast for Shichirigahama over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let’s get stuck into what’s shaping up for the next couple of weeks.
We’ve got a run of surf on the cards, but it’s not all plain sailing. The first week sees some solid, punchy swell but it comes with a few caveats, and the second week drops right off into flat, poor conditions. The best of the lot is definitely the first few days, but we need to pick our moments.
Shichirigahama is the only game in town here. Starting off Tuesday morning, the 4th of August, we’ve got clean 5ft of SE swell, with a long 17-second period, and a fresh offshore wind from the NE. The water is a touch warmer than normal at 83°F, which is nice. The wave energy is already strong (1098), but the comment says it’s marginal, so don’t expect perfection. Tuesday afternoon stays clean, bumps up to 6ft from the SE, with a 16-second period and a moderate cross-offshore breeze. The energy jumps to 1467, getting better.
Wednesday the 5th is where it starts to get interesting. Morning session sees 7ft of SSE swell, a 15-second period, and a fresh offshore NNE wind. The energy is cranking at 2228. This is proper groundswell, and with that long period, it’s going to be offering up some powerful, well-shaped lines at this river mouth. It’s a little on the bigger side, but it’s clean and offshore. Wednesday afternoon stays similar at 8ft, with the same energy theme (2479), and a moderate cross-offshore breeze. This is the standout window. The swell direction from the SSE is bang on the optimum, and the wind is clean. It’s still in the intermediate-friendly zone, but the bigger sets will test you.
Thursday the 6th and Friday the 7th keep the pulse going. Thursday morning is 7ft of SSE swell, still clean with a cross-offshore breeze, but the period has dropped to 14 seconds, so the quality will be a touch less refined. Energy is still strong (1623). Thursday afternoon shifts to a light cross-shore from the SE, which introduces a little wind ripple, but it’s still surfable. Friday brings rain showers. Morning is 7ft of S swell, clean with a cross-offshore breeze, but the afternoon gets a little choppy with a cross-shore wind.
By Saturday the 8th, the swell drops to 5ft. The morning is clean with a light cross-offshore breeze, and the comment says “expect very good surf conditions,” which is a nice surprise despite the smaller size. The afternoon turns to a moderate cross-onshore, choppy mess, so get your session in early.
From Sunday the 9th onward, the swell fades fast. The 9th has 4ft, clean, but it’s a shadow of the midweek energy. Monday the 10th is down to 3ft, and the wind is howling fresh offshore, making it clean but tiny. The energy drops to 538. Tuesday the 11th is a similar story, 3ft, clean but small.
Then, from Wednesday the 12th all the way through to Wednesday the 19th, it’s a grim run. The swell rarely breaks 3ft, the wind is onshore or cross-onshore, and the energy figures are in the low hundreds or even below 100. The comment is “poor surf conditions” for almost every session. It’s flat, it’s choppy, and it’s not worth paddling out for. That’s a solid week of nothing.
So, the one true standout is Wednesday the 5th of August. The morning and afternoon both offer 7ft to 8ft of SSE groundswell, clean offshore to cross-offshore winds, and massive energy. It’s the best bang for your buck. If you miss that, Thursday morning is the next best call. After that, the window closes fast.
The river mouth setup here can be a bit inconsistent, but when it fires like this, it’s worth the wait. Don’t expect much in the second week at all.
Rusty, signing off.
Short Range ForecastSome drizzle, heaviest during Thu night. Warm (max 30°C on Thu morning, min 23°C on Tue night). Mainly fresh winds. | Days 4-6 Weather SummaryModerate rain (total 16mm), heaviest on Fri morning. Warm (max 29°C on Fri afternoon, min 24°C on Sun night). Mainly fresh winds. | ||||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | |||||||||||||||
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) | SE 17 | SE 16 | SE 16 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | S 14 | S 14 | S 14 | SSW 15 | SSW 14 | S 14 | SSW 14 | SSW 15 | SSW 14 | SSW 15 | SSW 16 | SSW 16 | SSW 16 | SW 15 |
Wave Graph | |||||||||||||||||||||
1094 | 1464 | 2241 | 2228 | 2479 | 2228 | 1519 | 1929 | 1999 | 1855 | 1635 | 1143 | 971 | 1121 | 1007 | 732 | 693 | 657 | 499 | 436 | 218 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | off | off | cross-off | off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-on | cross-off | cross-off | cross | cross-off | off | cross-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 | 1:56PM0.69m | 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 | — | — | 4:52 | — | — | 4:54 | — | — | 4:54 | — | — | 4:56 | — | — | 4:56 | — | — | |
— | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | |
mm | — | — | — | — | — | — | — | — | 1 | 4 | 2 | 8 | 2 | — | — | — | — | — | — | — | — |
Temp °C | 27 | 28 | 24 | 26 | 29 | 27 | 30 | 30 | 27 | 28 | 29 | 26 | 28 | 29 | 26 | 28 | 28 | 26 | 27 | 28 | 25 |
Feels °C | 24 | 25 | 22 | 24 | 29 | 28 | 32 | 32 | 30 | 29 | 30 | 28 | 30 | 30 | 28 | 29 | 30 | 26 | 24 | 25 | 24 |
Swell 1 Height (m) Direction Period (s) | SE 17 | SE 16 | SE 16 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | S 14 | S 14 | S 14 | SSW 15 | SSW 14 | S 14 | SSW 14 | SSW 15 | SSW 14 | SSW 15 | SSW 16 | SSW 16 | SSW 16 | SW 15 |
1094 | 1464 | 2241 | 2228 | 2479 | 2228 | 1519 | 1929 | 1999 | 1855 | 1635 | 1143 | 971 | 1121 | 1007 | 732 | 693 | 657 | 499 | 436 | 218 | |
Swell 2 Height (m) Direction Period (s) | E 14 | E 13 | — | — | — | — | ESE 10 | ESE 10 | ESE 10 | ESE 9 | SE 10 | SE 9 | SW 16 | ESE 12 | ESE 12 | SSE 9 | SE 9 | SE 8 | SE 8 | SSW 13 | S 12 |
4 | 3 | — | — | — | — | 104 | 118 | 111 | 236 | 47 | 78 | 216 | 14 | 29 | 101 | 77 | 33 | 22 | 35 | 106 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | SE 12 | ESE 12 | — | ESE 12 | ESE 14 | ESE 13 | ESE 13 | ESE 12 | ESE 12 |
— | — | — | — | — | — | — | — | — | — | — | — | 6 | 113 | — | 29 | 41 | 18 | 17 | 29 | 28 | |
Wind waves Height (m) Direction Period (s) | NNE 3 | — | — | NNE 4 | — | — | — | — | — | — | — | — | — | — | — | — | SE 9 | ENE 3 | NNE 4 | NNE 4 | NNE 4 |
8 | — | — | 24 | — | — | — | — | — | — | — | — | — | — | — | — | 164 | 6 | 11 | 10 | 14 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 142 | 42 | 4 | 548 | 10 | 0 | 4 | 42 | 0 | 51 | 51 | 0 | 0 | 51 | 0 | 6 | 10 | 15 | 1027 | 51 | 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.











