Surf Forecasts:
Shichirigahama surf forecast from 31 Aug 2026:
- Most powerful swell: Friday 4 Sep, 9PM (local time) - 2.5ft (0.8m), 9s period, SSW swell with 84 kJ wave energy.
Best Forecast Surf Conditions for Shichirigahama this week:
The most powerful waves expected at Shichirigahama in the next 16 days are 0.8m 9s and forecast to arrive on Friday (Sep 04) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Friday (Sep 04) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 9PM (Fri 4th Sep) | 2.5ft (0.8m) 9s |
Table - best surf conditions forecast for Shichirigahama over the next 16 days.
The Lowdown
Alright, let’s size up Shichigahama (Shichirigahama). Gotta be honest, it’s a slow start. For a good week-plus, from right now until the morning of September 8th, it’s flat to knee-high junk. Don’t bother. The energy readings are in the weak 20s and 30s – nothing to get excited about.
Then things finally shift on Monday, September 8th. The morning shows a small bump of 3 ft from the SE, but the afternoon is the real deal. The wind goes glassy light from the ESE, turning into a clean cross-off, and that SE swell builds to 4 ft with an 11-second period. The wave energy jumps to a solid moderate 416. That’s a good sign for a river mouth. Tuesday, September 9th, keeps the theme with a 6 ft SSE swell in the afternoon and a period of 12 seconds – classic groundswell. Energy is strong at 863. Wednesday, September 10th, also sees 6 ft with 13-second period, but the wind will be fresh offshore from the NNE – clean, but a bit hard to paddle into.
The real standout window, and I mean the one to circle, is Saturday, September 12th. Morning looks fantastic with a clean 6 ft south swell, a light offshore from the NNE, and wave energy riding high at 842. The wind stays light and off, so it’ll be smooth and lined up. That size is for intermediate to experienced surfers, not beginners. The swell direction from the south is ideal for this river break. The afternoon is even cleaner, with a 6 ft swell and energy peaking at a very strong 1133. That Saturday is the pick of the bunch, but it’s over a week away, so keep an eye on it – promising but not locked in.
The water temp is a warm 83°F, about a touch warmer than usual for this time of year. Just a nice little bonus.
Fair warning: this spot is a river mouth and can be inconsistent, and on a weekend like that, crowds are *sometimes* a thing, so plan accordingly.
Alright, catch you on the high tide.
- Rusty
Short Range ForecastMostly dry. Warm (max 27°C on Tue afternoon, min 24°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 58mm), heaviest during Fri night. Warm (max 28°C on Thu morning, min 21°C on Fri night). Winds increasing (light winds from the WSW on Thu night, fresh winds from the NE by Sat afternoon). | ||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | |||||||||||||||
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 7 | SSE 10 | SSW 9 | E 12 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | S 9 | S 8 | SSW 10 | SSW 10 | SSW 10 | SSW 8 | SSW 8 | SSW 8 | SSE 8 | SE 11 | SE 10 | SE 10 |
Wave Graph | |||||||||||||||||||||
10 | 9 | 15 | 14 | 15 | 14 | 14 | 24 | 24 | 39 | 46 | 30 | 36 | 51 | 55 | 26 | 12 | 7 | 42 | 53 | 34 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-on | glassy | on | on | on | on | on | cross-on | off | off | cross-off | off | cross-off | off | off | cross-off | off |
High Tide | 6:40PM1.58m | 7:22AM1.41m | 7:05PM1.57m | 8:12AM1.30m | 7:32PM1.55m | 9:15AM1.18m | 7:59PM1.49m | 11:18AM1.09m | 8:28PM1.42m | 9:04PM1.32m | 4:27PM1.34m | 11:39PM1.24m | |||||||||
Low Tide | 12:30PM0.58m | 1:04AM0.40m | 12:53PM0.70m | 1:45AM0.39m | 1:14PM0.83m | 2:34AM0.42m | 1:27PM0.97m | 3:41AM0.47m | 12:52PM1.08m | 5:26AM0.51m | 7:15AM0.47m | 9:04PM1.21m | |||||||||
5:11 | — | — | 5:13 | — | — | 5:13 | — | — | 5:15 | — | — | 5:15 | — | — | 5:16 | — | — | 5:16 | — | — | |
— | 6:10 | — | — | 6:09 | — | — | 6:07 | — | — | 6:07 | — | — | 6:06 | — | — | 6:04 | — | — | 6:02 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 12 | 43 | 1 | — | — | — | — | — |
Temp °C | 24 | 26 | 24 | 26 | 27 | 26 | 26 | 27 | 26 | 28 | 28 | 27 | 23 | 23 | 21 | 25 | 26 | 23 | 25 | 25 | 22 |
Feels °C | 24 | 27 | 24 | 28 | 29 | 29 | 28 | 28 | 28 | 29 | 28 | 29 | 23 | 22 | 19 | 22 | 22 | 19 | 19 | 19 | 16 |
Swell 1 Height (m) Direction Period (s) | SSW 7 | SSW 7 | SSW 9 | SSW 8 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | S 9 | SSW 10 | SE 8 | SSW 10 | SSW 10 | SSW 8 | SSW 8 | SSW 8 | SSE 8 | SE 11 | SE 10 | SE 10 |
10 | 5 | 15 | 14 | 15 | 14 | 14 | 24 | 24 | 39 | 10 | 30 | 36 | 51 | 55 | 26 | 12 | 7 | 42 | 53 | 34 | |
Swell 2 Height (m) Direction Period (s) | SSE 10 | SSE 10 | SSE 9 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SSW 10 | SSE 10 | SE 10 | SSW 10 | SE 8 | SE 7 | SE 7 | SSE 7 | SE 8 | SSW 8 | S 8 | SW 10 | SW 10 |
9 | 9 | 9 | 4 | 4 | 4 | 4 | 4 | 10 | 9 | 4 | 30 | 28 | 25 | 11 | 4 | 3 | 7 | 1 | 4 | 4 | |
Swell 3 Height (m) Direction Period (s) | E 14 | S 10 | E 13 | E 12 | E 12 | E 11 | E 10 | E 10 | SE 10 | E 10 | E 10 | E 10 | E 9 | — | SE 8 | SE 9 | SE 6 | SW 10 | SW 11 | S 9 | S 10 |
4 | 2 | 3 | 11 | 11 | 2 | 2 | 2 | 4 | 2 | 2 | 2 | 7 | — | 3 | 3 | 2 | 4 | 4 | 2 | 2 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | S 3 | SSW 3 | — | S 8 | NE 2 | ENE 3 | NNE 4 | N 4 | NNE 3 | NE 3 | NE 3 | NE 3 | NE 4 | NE 4 |
— | — | — | — | — | — | — | 1 | 2 | — | 46 | 2 | 3 | 16 | 27 | 7 | 3 | 4 | 6 | 12 | 28 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 250 | 54 | 54 | 20 | 20 | 20 | 20 | 64 | 22 | 80 | 81 | 6 | 4 | 4 | 506 | 225 | 548 | 466 | 142 | 466 | 487 |
Best forecast wave conditions in Kanagawa | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.











