Surf Forecasts:
Shishikui Beach surf forecast from 26 Aug 2026:
- Best quality surf: Friday 28 Aug, 12PM (local time) - 3.5ft (1.0m), 7s period, SSW swell with glassy winds.
- Most powerful swell: Wednesday 2 Sep, 12PM (local time) - 10ft (3.0m), 12s period, SSE swell with 2,064 kJ wave energy.
- Next surfable swell (1★+): Friday 28 Aug, 12PM (local time) - 3.5ft (1.0m), 7s period with SSW swell.
Best Forecast Surf Conditions for Shishikui Beach this week:
The surf forecast for Shishikui Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 28) at 12PM. The primary swell is predicted to be 1.0m and 7s period with a secondary swell of 0.8m and 8s. Another secondary swell of 0.8m and 8s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Shishikui Beach in the next 16 days are 3.0m 12s and forecast to arrive on Wednesday (Sep 02) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Saturday (Aug 29) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Fri 28th Aug) | 3.5ft (1.0m) 7s |
| Best Surf | 12PM (Fri 28th Aug) | 3.5ft (1.0m) 7s |
| Most Powerful | 12PM (Wed 2nd Sep) | 10ft (3.0m) 12s |
Table - best surf conditions forecast for Shishikui Beach over the next 16 days.
The Lowdown
Alright, mate, Rusty here. Let's have a look at what's on the table for the coming weeks.
Right off the bat, I gotta be straight with you – this stretch of coastline is copping a bit of a rough patch. The water temp is sitting at a touch warmer than normal for this time of year, coming in at 84°F, but don't let that fool you. The surf quality is pretty ordinary for most of the run.
The first decent window we see is a glimmer early on Wednesday the 26th of August. Shishikui Beach has some waist-high swell, around 5ft from the S, with a moderate 11-second period. The energy is moderate (843), but the wind is a cross-on from the SSW at 12 mph, which chops it up. It's a struggle, but there's a wave there for the beginners.
Honestly, after that, it's a real dry spell. From Thursday the 27th right through to the end of August, we're looking at small, weak, messy waves. The swell drops below 3ft, the periods are short, and the wind is mostly cross-onshore. It's a write-off for anyone wanting a proper surf. Saturday morning the 29th shows a bit of a glass-off with light wind, but the swell is only 3ft with a 7-second period – barely a ripple. The energy is weak (111). You'd be better off with a longboard and low expectations.
We then hit the start of September, and the energy ramps up massively. On Monday the 31st of August, we have some 4ft SSE swell, but still cross-onshore. Then Tuesday the 1st of September sees a big jump to 7ft, with a 12-second period and strong energy (1438), but it's accompanied by moderate rain and a 16 mph cross-on wind. The surf is poor. Wednesday the 2nd is even bigger – 12ft to 13ft from the SSE – but with strong winds and onshore conditions. The energy is very strong (2232 and 3172), but it's a washing machine out there. This is getting into expert-only territory, and even then, the wind is making it a mess.
The pattern continues into the second week. Thursday the 3rd of September has 8ft SSW swell with a 13-second period and strong energy (2809), but the wind is still fresh and cross-onshore. Friday the 4th of September peaks with a massive 12ft swell from the S, hitting a whopping 4197 energy, but it's too big for Shishikui Beach and the wind is still on it. Saturday the 5th drops to 7ft, but the wind is onshore again.
Looking further ahead, the best chance for something clean might be Monday the 7th of September. The swell is 6ft to 7ft from the SSE, with a light breeze that could clean things up. The period is 10-13 seconds, so there's some energy there (753-2472), but it's still marginal. Then Tuesday the 8th has a 10ft SE swell with a light breeze, but again, the guidance says it's too big for this break.
The real standout, if you're an expert, is Thursday the 10th of September. The swell is 10ft from the S with a very long 15-second period, and the energy is massive (4552). The wind is a gentle cross-on, so it might clean up a bit. But this is a serious, powerful groundswell heading straight for the beach. It's going to be a heavy, racy wave – only for the experienced crew. The big period and size will likely make it unpredictable and closing out.
So, the verdict? The first week is a wash with small, windy junk. The second week has huge, powerful swell but it's constantly battered by onshore winds. The only real nod for a session goes to the very end of the run, around the 10th of September, if you're a charger willing to deal with serious size and a bit of cross-on breeze. Otherwise, keep your board in the car and wait for a change in the forecast.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Fri afternoon. Warm (max 31°C on Thu morning, min 25°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 27mm), heaviest during Mon night. Warm (max 30°C on Mon morning, min 25°C on Sun night). Wind will be generally light. | ||||||||||||||||||
Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | ||||||||||||||
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 11 | SSE 9 | S 10 | SSW 9 | SSW 8 | SSW 8 | S 8 | SSW 8 | SSW 7 | SSW 8 | S 7 | S 8 | S 12 | SSE 10 | SSE 10 | SSE 9 | SSE 12 | SSE 12 | SSE 11 |
Wave Graph | |||||||||||||||||||
308 | 213 | 347 | 228 | 96 | 68 | 71 | 105 | 97 | 58 | 54 | 45 | 71 | 276 | 258 | 216 | 1158 | 1401 | 1261 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross | cross | cross-off | cross-off | cross-on | cross-on | cross | glassy | cross-on | glassy | glassy | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 5:10AM1.91m | 6:16PM1.90m | 5:52AM1.99m | 6:40PM1.94m | 6:31AM2.03m | 7:05PM1.95m | 7:10AM2.03m | 7:30PM1.95m | 7:49AM1.98m | 7:55PM1.93m | 8:29AM1.89m | 8:20PM1.90m | |||||||
Low Tide | 11:28PM0.93m | 11:46AM0.31m | 00:00AM0.79m | 12:20PM0.32m | 00:32AM0.66m | 12:52PM0.37m | 1:04AM0.56m | 1:23PM0.47m | 1:36AM0.48m | 1:53PM0.59m | 2:11AM0.45m | 2:23PM0.74m | 2:49AM0.46m | ||||||
— | 5:31 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:35 | — | — | 5:35 | — | — | |
6:37 | — | 6:35 | — | — | 6:34 | — | — | 6:32 | — | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — | |
mm | — | — | — | — | 2 | 3 | — | — | 2 | — | 1 | 3 | — | — | 1 | 10 | 5 | 7 | 20 |
Temp °C | 27 | 31 | 31 | 27 | 30 | 27 | 26 | 31 | 30 | 27 | 29 | 29 | 26 | 30 | 29 | 27 | 27 | 27 | 27 |
Feels °C | 31 | 33 | 33 | 31 | 34 | 31 | 32 | 33 | 33 | 31 | 34 | 33 | 30 | 33 | 32 | 32 | 29 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | SSW 11 | SSE 9 | E 11 | S 9 | SSE 8 | SSW 8 | S 8 | S 7 | ESE 9 | SSW 8 | S 7 | S 8 | S 8 | SSE 10 | SSE 10 | SSE 9 | SSE 12 | SSE 12 | SSE 11 |
308 | 213 | 10 | 203 | 76 | 68 | 71 | 54 | 17 | 58 | 54 | 45 | 58 | 276 | 258 | 216 | 1158 | 1401 | 1261 | |
Swell 2 Height (m) Direction Period (s) | SSE 9 | SSW 10 | SE 16 | SSW 9 | SE 10 | SSE 8 | SE 9 | SE 9 | SSE 9 | SE 11 | SE 10 | SE 10 | S 12 | S 12 | SSW 9 | S 11 | E 13 | E 12 | E 11 |
181 | 154 | 10 | 52 | 15 | 52 | 14 | 21 | 8 | 19 | 17 | 36 | 71 | 11 | 8 | 86 | 3 | 11 | 22 | |
Swell 3 Height (m) Direction Period (s) | E 12 | SSE 11 | E 15 | S 8 | ESE 11 | SSE 10 | E 11 | E 10 | SE 13 | ESE 8 | ESE 9 | S 13 | SE 10 | E 11 | E 11 | SSE 14 | E 13 | — | — |
25 | 25 | 4 | 12 | 23 | 10 | 9 | 7 | 7 | 7 | 9 | 32 | 27 | 2 | 20 | 69 | 12 | — | — | |
Wind waves Height (m) Direction Period (s) | SSW 3 | — | S 10 | SSW 9 | SSW 8 | — | — | SSW 8 | SSW 7 | SW 4 | SW 4 | SSW 4 | SW 3 | — | — | — | — | — | — |
7 | — | 347 | 228 | 96 | — | — | 105 | 97 | 21 | 7 | 8 | 5 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 4 | 4 | 4 | 2 | 4 | 0 | 0 | 4 | 8 | 2 | 0 | 4 | 0 | 0 | 489 | 38 | 499 | 479 | 477 |
Best forecast wave conditions in Shikoku | |||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the Shishikui Beach Surf forecast
The above surf forecast table for Shishikui Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Shishikui Beach can be found by selecting the local surf guide option on the grey menu. Our Shishikui Beach 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 (Shishikui Beach) 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 Shishikui Beach 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.
Shishikui Beach is 38 km (24 miles) from Muroto. If you plan a holiday in Shikoku, look for hotels and other accommodation in Muroto. Muroto has rooms for a wide range of budgets as well as car hire and transport links.











