Surf Forecasts:
Shichirigahama surf forecast from 24 Aug 2026:
- Most powerful swell: Monday 24 Aug, 9PM (local time) - 5ft (1.5m), 14s period, SSE swell with 911 kJ wave energy.
Best Forecast Surf Conditions for Shichirigahama this week:
The most powerful waves expected at Shichirigahama in the next 16 days are 1.5m 14s and forecast to arrive on Monday (Aug 24) at 9PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 2s period and expected on Saturday (Aug 29) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 9PM (Mon 24th Aug) | 5ft (1.5m) 14s |
Table - best surf conditions forecast for Shichirigahama over the next 16 days.
The Lowdown
Hey, Rusty here again. Let’s talk about Shichigahama in terms you might be more used to. It’s a river mouth, and it’s inconsistent, so a long dry spell like this is pretty normal for the area. The first week is a total dud, so save your energy for the second half of the forecast.
The water’s sitting at about 81°, which is pretty standard for this time of year – nothing unusual there. But the surf? For the rest of August and the first couple of days of September, it’s tiny and messy. We start with a 0.6ft swell from the SSE with a very long 18-second period, but the energy is weak (477) and the wind is on it. It’s a no-go.
There’s a brief tease on Saturday, August 29th, with a 0.5ft south swell and a glassy northeasterly offshore. It looks clean, but it’s just too small to paddle for. That tiny, clean but powerless theme carries on.
The first real opportunity shows up on Thursday, September 3rd. A SSW swell pushes through at 0.9ft to 1.0ft, with a period of 13 to 14 seconds – that’s proper groundswell. The energy ticks up to 313 to 442 (moderate). The key here is the wind: a fresh offshore from the NNE at 15 to 18 mph. That’ll clean up the river mouth nicely. It’s not big, but it’s the cleanest we get.
Friday, September 4th, offers similar conditions. A 1.0ft SSW swell, still with that strong offshore wind (around 21 mph), making for clean, if a bit gusty, conditions. This is your best bet.
By Saturday the 5th, the swell drops to 0.7ft, but stays clean with a moderate offshore. After that, the wind turns onshore and strong, blowing things out into the second week. Tuesday, September 8th, gives us one more look with a 0.9ft south swell and a 13-second period under an offshore breeze (15 mph), but it’s only moderate energy (320).
Bottom line: your window is Thursday, September 3rd, through Friday, September 4th. A clean, offshore SSW groundswell around 1.0ft at Shichigahama. It’s the standout in a mostly flat run. The rest is a waiting game. This spot doesn’t fire often, so when it does, be ready.
Rusty.
Short Range ForecastSome drizzle, heaviest during Wed morning. Warm (max 30°C on Tue afternoon, min 26°C on Mon morning). Winds increasing (calm on Mon morning, fresh winds from the SW by Tue afternoon). | Days 4-6 Weather SummaryHeavy rain (total 21mm), heaviest during Thu night. Warm (max 30°C on Thu afternoon, min 23°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||||
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) | SSE 18 | SSE 16 | SSE 14 | SSE 13 | SSE 12 | S 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | S 9 | S 9 | S 6 | S 6 | S 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 260 | 480 | 615 | 690 | 298 | 319 | 236 | 217 | 123 | 90 | 47 | 62 | 55 | 43 | 39 | 33 | 22 | 13 | 14 | 13 | 13 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | on | on | on | on | on | glassy | glassy | on | cross-off | off | cross-off | off | off | cross-on | cross-on |
High Tide | 4:54PM1.41m | 2:21AM1.33m | 5:05PM1.44m | 3:19AM1.40m | 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 | ||||||||
Low Tide | 9:06AM0.32m | 9:56PM1.11m | 9:48AM0.27m | 10:20PM1.01m | 10:23AM0.25m | 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 | |||||||
 | |  | | | |  | |  | | |  |  | |  |  |  |  | | | | |
 | 5:07 | — | — | 5:07 | — | — | 5:09 | — | — | 5:09 | — | — | 5:09 | — | — | 5:11 | — | — | 5:11 | — | — |
 | — | 6:20 | — | — | 6:19 | — | — | 6:17 | — | — | 6:16 | — | — | 6:15 | — | — | 6:14 | — | — | 6:13 | — |
mm | — | — | — | — | — | — | 1 | — | — | — | 1 | 10 | — | — | 4 | — | 5 | 1 | — | — | — |
Temp °C | 27 | 28 | 27 | 29 | 30 | 28 | 29 | 30 | 28 | 29 | 30 | 25 | 27 | 28 | 28 | 27 | 26 | 24 | 26 | 27 | 26 |
Feels °C | 29 | 29 | 29 | 30 | 30 | 28 | 31 | 31 | 28 | 31 | 32 | 27 | 30 | 29 | 32 | 31 | 30 | 27 | 28 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | SSE 18 | SSE 13 | SSE 14 | SSE 13 | SSE 12 | S 12 | SSW 12 | SSW 12 | SSW 12 | S 5 | S 6 | S 9 | S 9 | S 8 | S 6 | S 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 |
| kJ | 260 | 342 | 615 | 690 | 298 | 319 | 236 | 217 | 123 | 14 | 18 | 62 | 55 | 12 | 39 | 33 | 22 | 13 | 14 | 13 | 13 |
Swell 2 Height (m) Direction Period (s) | SSE 12 | SSE 16 | S 17 | E 14 | S 14 | E 13 | SSE 10 | SSE 9 | SSE 9 | SSW 12 | SSW 11 | SW 11 | SSE 9 | SSE 10 | SSE 9 | SSE 11 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SSE 10 |
| kJ | 133 | 480 | 351 | 4 | 187 | 3 | 52 | 48 | 31 | 90 | 47 | 18 | 8 | 9 | 9 | 11 | 12 | 11 | 10 | 10 | 10 |
Swell 3 Height (m) Direction Period (s) | SSE 15 | SW 8 | ESE 15 | ESE 14 | E 13 | ESE 13 | SSW 4 | E 12 | S 11 | SSE 9 | S 10 | SSE 10 | SW 10 | SW 10 | W 9 | SW 9 | SW 10 | SSW 9 | E 11 | SW 10 | SW 10 |
| kJ | 84 | 3 | 42 | 66 | 3 | 33 | 7 | 3 | 22 | 34 | 34 | 9 | 4 | 4 | 2 | 3 | 4 | 8 | 2 | 4 | 4 |
Wind waves Height (m) Direction Period (s) | — | S 3 | SSW 4 | SSW 4 | SSW 4 | SSW 5 | SW 4 | SSW 4 | SSW 5 | SSW 5 | — | — | — | S 6 | — | NE 2 | — | — | — | — | — |
| kJ | — | 5 | 10 | 6 | 43 | 25 | 15 | 25 | 37 | 21 | — | — | — | 43 | — | 1 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 3 | 515 | 10 | 10 | 250 | 10 | 10 | 531 | 23 | 10 | 90 | 3 | 3 | 23 | 3 | 42 | 20 | 42 | 20 | 42 | 58 |
Best forecast wave conditions in Kanagawa | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Shichirigahama surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest