Surf Forecasts:
Shichirigahama surf forecast from 15 Aug 2026:
- Most powerful swell: Sunday 23 Aug, 3AM (local time) - 4.5ft (1.3m), 7s period, S swell with 168 kJ wave energy.
Best Forecast Surf Conditions for Shichirigahama this week:
The most powerful waves expected at Shichirigahama in the next 16 days are 1.3m 7s and forecast to arrive on Sunday (Aug 23) at 3AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Sunday (Aug 23) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 3AM (Sun 23rd Aug) | 4.5ft (1.3m) 7s |
Table - best surf conditions forecast for Shichirigahama over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at the local stretch for the next couple of weeks.
This is a tricky one. For the first week and a half, we’re looking at a real flat spell. The models are showing nothing but tiny, weak waves until the 25th of August. From the 16th right through to the 24th, the swell energy is barely registering – mostly under 100 (weak) and the surf is consistently described as "poor." It’s going to be a long wait.
The first real chance of anything rideable shows up on the morning of the 25th. The swell jumps up to 6 ft from the SSE, with a very long period of 15 seconds, and the combined energy climbs to 1289 (strong). The wind is light and cross-shore, so it’ll be clean, but the tide might be a factor. It’s still a "marginal" call. That afternoon, it gets bigger but the wind swings onshore, so it’s not the one.
The standout window is the morning of the 26th of August. Shichirigahama looks like it will be the pick. We’ve got a solid 6 ft swell from the SSE, a long 14-second period, and the energy is pumping at 1277 (strong). The real kicker is the wind: a moderate offshore breeze from the NNE. That’s going to clean it right up. The score is for "very good surf conditions." This is a premium window for the intermediate surfer; the size is manageable but has some punch.
Following that, the 27th gets blown out by a gale – 40 mph winds, which is a hard pass. But then the 28th of August morning is a proper call for the experienced crew. The swell is 8 ft from the SSE, with a 14-second period and energy at 3009 (very strong). The wind is a light offshore from the NE. That’s a clean, powerful, big-wave session. The notes say "excellent surf conditions for experienced surfers." This is the big one if you’ve got the skills.
The 29th of August morning sees the swell peak at 10 ft from the SSE, with a 13-second period and a massive 4250 (very strong) energy reading. The wind is a fresh offshore from the NNE. Again, this is only for experts. The tide might be a factor, but the power is undeniable.
Then it looks like it drops off again quickly into the 30th and 31st.
So, overall, a long dry spell, then a fantastic couple of days for the right skill level. For the best all-rounder, I’d be on the water the morning of the 26th. For the big-wave hunters, the 28th morning is the one to circle.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Sat night. Warm (max 28°C on Tue afternoon, min 23°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Wed afternoon, min 25°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | ||||||||||||||
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 8 | SSW 9 | S 9 | S 9 | S 9 | ESE 8 | SE 11 | SSW 8 | SE 8 | SE 7 | SSW 8 | SSW 8 | SSW 8 | ESE 10 | SE 4 | SE 5 | ESE 8 | SSW 11 | SSW 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 30 | 27 | 39 | 37 | 23 | 24 | 29 | 6 | 10 | 9 | 6 | 6 | 6 | 10 | 5 | 12 | 39 | 123 | 136 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross | cross-off | cross-off | glassy | cross-off | cross-off | on | cross-on | cross | on | cross-on | cross-off | on | on | cross-on | on | on |
High Tide | 6:22AM1.51m | 6:54PM1.54m | 7:05AM1.44m | 7:19PM1.55m | 7:52AM1.34m | 7:45PM1.54m | 8:48AM1.21m | 8:14PM1.50m | 10:09AM1.09m | 8:44PM1.45m | 9:20PM1.38m | ||||||||
Low Tide | 00:25AM0.60m | 12:34PM0.42m | 1:01AM0.53m | 1:00PM0.55m | 1:41AM0.48m | 1:24PM0.69m | 2:29AM0.47m | 1:44PM0.84m | 3:29AM0.49m | 1:48PM0.98m | 4:58AM0.51m | ||||||||
 |  |  |  |  | | | | |  |  | | | | | | | | | |
 | — | 5:01 | — | — | 5:01 | — | — | 5:01 | — | — | 5:03 | — | — | 5:03 | — | — | 5:05 | — | — |
 | 6:31 | — | 6:30 | — | — | 6:29 | — | — | 6:28 | — | — | 6:27 | — | — | 6:25 | — | — | 6:23 | — |
mm | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 26 | 27 | 25 | 26 | 27 | 26 | 27 | 28 | 26 | 27 | 28 | 26 | 27 | 27 | 26 | 27 | 27 | 26 |
Feels °C | 28 | 27 | 28 | 26 | 28 | 30 | 29 | 30 | 30 | 29 | 30 | 30 | 29 | 30 | 28 | 28 | 29 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SSW 9 | S 9 | S 9 | S 9 | SSW 8 | S 8 | SSW 8 | SE 8 | SE 7 | ESE 7 | SE 7 | SSE 6 | ESE 10 | SE 11 | S 8 | S 8 | SSW 11 | SSW 10 |
| kJ | 30 | 27 | 39 | 37 | 23 | 14 | 21 | 6 | 10 | 9 | 5 | 2 | 4 | 10 | 5 | 12 | 34 | 123 | 136 |
Swell 2 Height (m) Direction Period (s) | SSW 9 | SE 7 | SSE 11 | SSE 11 | SSE 11 | SE 5 | SE 10 | SSE 6 | SSW 8 | SSW 8 | SSW 8 | SE 10 | SE 10 | ESE 6 | SW 8 | SE 4 | SSW 12 | SE 10 | SE 10 |
| kJ | 28 | 14 | 12 | 12 | 11 | 5 | 4 | 3 | 6 | 6 | 6 | 4 | 4 | 3 | 3 | 2 | 27 | 4 | 4 |
Swell 3 Height (m) Direction Period (s) | SE 12 | SSE 12 | E 10 | E 8 | E 9 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SSW 8 | SSW 8 | SW 8 | S 9 | SE 11 | SE 10 | S 9 | SE 9 |
| kJ | 6 | 14 | 2 | 1 | 2 | 4 | 29 | 4 | 4 | 4 | 4 | 6 | 6 | 3 | 2 | 4 | 4 | 2 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | ESE 8 | — | — | — | — | — | — | — | — | SE 4 | SE 5 | ESE 8 | SSE 5 | — |
| kJ | — | — | — | — | — | 24 | — | — | — | — | — | — | — | — | 3 | 12 | 39 | 8 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 3 | 4 | 64 | 3 | 42 | 20 | 3 | 54 | 22 | 54 | 54 | 22 | 54 | 42 | 64 | 34 | 20 | 64 | 10 |
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.
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