Surf Forecasts:
Cape Toi surf forecast from 16 Aug 2026:
- Best quality surf: Monday 17 Aug, 3AM (local time) - 3.5ft (1.1m), 10s period, E swell with glassy winds.
- Most powerful swell: Sunday 16 Aug, 9PM (local time) - 3.5ft (1.1m), 10s period, E swell with 245 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 3AM (local time) - 3.5ft (1.1m), 10s period with E swell.
Best Forecast Surf Conditions for Cape Toi this week:
The surf forecast for Cape Toi over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 17) at 3AM. The primary swell is predicted to be 1.1m and 10s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Cape Toi in the next 16 days are 1.1m 10s and forecast to arrive on Sunday (Aug 16) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 11s period and expected on Thursday (Aug 20) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Mon 17th Aug) | 3.5ft (1.1m) 10s |
| Best Surf | 3AM (Mon 17th Aug) | 3.5ft (1.1m) 10s |
| Most Powerful | 9PM (Sun 16th Aug) | 3.5ft (1.1m) 10s |
Table - best surf conditions forecast for Cape Toi over the next 16 days.
The Lowdown
Alright, Rusty here. Let's break this down for Cape Toi. It's a reef break, and it's inconsistent, so you gotta pick your moments. The first week is pretty much a washout, but there's some solid, heavy swell arriving if you can wait it out.
For the first week, it’s mostly poor. We’ve got weak, waist-high waves from the east, energy is real low, and the wind is cross-onshore, making everything choppy. Nothing worth paddling out for. The water temp is 83°, which is about average for this time of year.
Monday the 24th of August morning brings a tiny, clean 2ft wave from the east with a light wind. It’s surfable, but only barely. The real action starts Tuesday the 25th of August morning. That's when we see 4ft from the southeast, a 14-second period, and light offshore wind. It’s clean, with strong energy. That’s our first proper window.
Thursday the 27th of August morning is a standout for bigger waves. Swell is 8ft from the southeast, 16-second period, and the energy is pumping. The wind is fresh and cross-offshore, so it’ll be clean. But that size on a reef is for experts only. The long period means the sets have serious energy, but the gaps between them make paddling out a bit easier.
Thursday the 28th of August is a write-off for paddle surfing. Swell is 10ft to 12ft, energy is massive, but the wind is a near gale to gale. Even though it’s blowing off the land, the wind strength makes it a mess. This is more of a kite-surfing day than a day for a surfboard.
Saturday the 29th of August morning is the big one for experts. 13ft from the east-southeast, 16-second period, and glassy conditions with a light offshore breeze. Energy is enormous. This is exceptional, but you need to be a specialist. The reef will be critical.
Sunday the 30th of August is still huge at 18ft from the east, but the cross-shore wind will spoil the shape. Energy is over 13000, but the quality is just marginal.
Monday the 31st of August morning is another top-tier day for experts. 15ft from the east-northeast, 15-second period, and glassy conditions. Again, this is not for the faint of heart.
So, the best two calls: Tuesday the 25th of August morning for a clean, fun-size wave, and Saturday the 29th of August morning for the big, glassy, expert-only bomb. The rest is either flat, blown out, or way too big.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Mon morning. Warm (max 28°C on Sun afternoon, min 26°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 152mm), heaviest during Fri night. Warm (max 28°C on Wed afternoon, min 25°C on Fri afternoon). Mainly fresh winds. | |||||||||||||||||||
Sun 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | ||||||||||||||
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) | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | E 9 | E 8 | E 8 | ESE 6 | E 8 | ENE 8 | E 8 | E 9 | E 9 | E 9 | E 8 | E 8 | ENE 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 208 | 240 | 235 | 231 | 164 | 130 | 127 | 175 | 171 | 144 | 102 | 100 | 83 | 45 | 39 | 40 | 39 | 35 | 33 | 33 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | cross-on | cross-on | cross-on |
High Tide | 8:29PM1.96m | 8:47AM1.82m | 8:55PM1.89m | 9:31AM1.67m | 9:19PM1.81m | 10:22AM1.52m | 9:45PM1.71m | 11:36AM1.39m | 10:17PM1.61m | 2:09PM1.35m | 11:13PM1.51m | 4:13PM1.46m | 1:18AM1.46m | |||||||
Low Tide | 2:42AM0.51m | 2:47PM0.63m | 3:20AM0.53m | 3:14PM0.83m | 4:00AM0.60m | 3:41PM1.02m | 4:50AM0.68m | 4:10PM1.18m | 6:04AM0.74m | 5:08PM1.32m | 7:50AM0.74m | 8:53PM1.35m | ||||||||
 |  |  |  |  | | | | | | | | | | | | |  | | | |
 | — | — | 5:39 | — | — | 5:41 | — | — | 5:41 | — | — | 5:41 | — | — | 5:43 | — | — | 5:43 | — | — |
 | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — |
mm | — | — | 1 | — | 1 | — | — | 1 | — | 1 | 10 | 7 | 12 | 22 | 17 | 25 | 51 | 7 | 18 | 13 |
Temp °C | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 26 | 25 | 27 | 26 | 26 | 27 |
Feels °C | 30 | 30 | 31 | 31 | 30 | 31 | 30 | 30 | 30 | 29 | 29 | 31 | 31 | 30 | 28 | 26 | 29 | 29 | 28 | 30 |
Swell 1 Height (m) Direction Period (s) | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | S 7 | SSE 5 | SE 5 | SSE 10 | SSE 9 | SSE 10 | S 11 | S 10 | S 10 | S 10 | E 8 | E 8 | SSW 9 |
| kJ | 208 | 240 | 235 | 231 | 164 | 130 | 127 | 17 | 16 | 29 | 96 | 329 | 742 | 1197 | 710 | 625 | 474 | 35 | 33 | 326 |
Swell 2 Height (m) Direction Period (s) | S 8 | S 8 | S 8 | S 4 | SE 11 | S 7 | S 6 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | E 8 | E 9 | E 9 | E 9 | ESE 11 | ESE 10 | ENE 8 |
| kJ | 65 | 43 | 28 | 9 | 30 | 26 | 20 | 27 | 26 | 26 | 26 | 26 | 25 | 45 | 39 | 40 | 39 | 24 | 21 | 19 |
Swell 3 Height (m) Direction Period (s) | SE 12 | SE 11 | SE 11 | S 8 | SW 7 | SE 11 | SE 10 | SW 9 | S 7 | S 7 | W 9 | — | — | E 16 | ESE 11 | ESE 11 | ESE 11 | E 15 | SE 9 | ENE 10 |
| kJ | 21 | 19 | 31 | 18 | 2 | 18 | 17 | 3 | 9 | 4 | 2 | — | — | 5 | 23 | 23 | 22 | 4 | 3 | 33 |
Wind waves Height (m) Direction Period (s) | — | — | SSE 3 | S 4 | S 7 | — | — | E 9 | E 8 | E 8 | ESE 6 | E 8 | ENE 8 | — | — | — | — | S 9 | S 9 | — |
| kJ | — | — | 3 | 6 | 39 | — | — | 175 | 171 | 144 | 102 | 100 | 83 | — | — | — | — | 516 | 430 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 338 | 12 | 26 | 225 | 46 | 12 | 12 | 12 | 327 | 883 | 12 | 327 | 12 | 12 | 99 | 89 | 225 | 32 | 50 | 50 |
Best forecast wave conditions in Kyu Shu | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
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Information about the Cape Toi Surf forecast
The above surf forecast table for Cape Toi provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cape Toi can be found by selecting the local surf guide option on the grey menu. Our Cape Toi 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 (Cape Toi) 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 Cape Toi 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.
Cape Toi is 15 km (9 miles) from Kushima. If you plan a holiday in Kyu Shu, look for hotels and other accommodation in Kushima. Kushima has rooms for a wide range of budgets as well as car hire and transport links.
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