Surf Forecasts:
Cape Toi surf forecast from 18 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 6PM (local time) - 6ft (1.8m), 14s period, SE swell with cross-offshore winds.
- Most powerful swell: Tuesday 25 Aug, 9PM (local time) - 6.5ft (2.0m), 13s period, SE swell with 1,346 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 6PM (local time) - 6ft (1.8m), 14s period with SE 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 Tuesday (Aug 25) at 6PM. The primary swell is predicted to be 1.8m and 14s period with a secondary swell of 0.6m and 12s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Cape Toi in the next 16 days are 2.0m 13s and forecast to arrive on Tuesday (Aug 25) at 9PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 10s period and expected on Friday (Aug 21) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Tue 25th Aug) | 6ft (1.8m) 14s |
| Best Surf | 6PM (Tue 25th Aug) | 6ft (1.8m) 14s |
| Most Powerful | 9PM (Tue 25th Aug) | 6.5ft (2.0m) 13s |
Table - best surf conditions forecast for Cape Toi over the next 16 days.
The Lowdown
Alright, Rusty here again. Let’s run through the same story in feet and knots.
Honestly, the first week plus is a write-off. Poor surf, small weak swell, choppy cross-onshore winds. The wave energy is weak, mostly in the low hundreds. You’d be wasting your time.
The first real chance is the morning of Tuesday, August 25th. Clean cross-offshore breeze, but the swell is only 2ft from the SE with a very long 17-second period. The energy is 378 (moderate). It’s marginal.
The only true standout is the morning of Wednesday, August 26th. Glassy calm – offshore from the NW – and a solid 8ft swell from the SE with a 14-second period. The combined energy is a massive 2969 (strong). That’s a powerful groundswell. At Cape Toi, a reef break, this is a serious wave. Too big for beginners, only for experienced surfers. The water is 84°F, about normal for the season. Crowds are possible, but with that quality, it’s worth it.
After that, it drops off. The morning of Thursday the 27th has clean 2ft waves from the E with a 12-second period, energy 169. The morning of Friday the 28th is similar with 2ft from the E and a 15-second period, energy 209, clean.
Into the first week of September, the morning of Tuesday the 1st has 8ft from the E with a 9-second period, light offshore NNW wind, clean. Energy is 840 (moderate to strong). The morning of Wednesday the 2nd has 8ft from the E with an 11-second period, cross-shore NE wind, energy 1608 (strong). These are promising but less certain.
The call is clear: Wednesday the 26th of August. Glassy, 8ft SE groundswell. That’s your best shot.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Wed night. Warm (max 29°C on Wed afternoon, min 26°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Sat morning. Warm (max 29°C on Fri afternoon, min 26°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Tue 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | ||||||||||||||
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 9 | E 9 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | SE 11 | E 9 | E 9 | E 9 | E 9 | E 10 | E 10 | E 13 | E 10 | E 10 | E 10 | E 12 |
Wave Graph  | ||||||||||||||||||||
 kJ | 127 | 94 | 140 | 140 | 84 | 78 | 58 | 48 | 37 | 39 | 39 | 40 | 40 | 49 | 69 | 166 | 125 | 159 | 72 | 72 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross |
High Tide | 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 | 4:47PM1.57m | 2:57AM1.53m | 5:12PM1.68m | ||||||||
Low Tide | 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 | 9:15AM0.65m | 10:07PM1.24m | 10:07AM0.52m | 10:43PM1.13m | |||||||
 |  |  |  |  | | | | | | | | | | | | | | | | |
 | — | — | 5:41 | — | — | 5:41 | — | — | 5:43 | — | — | 5:43 | — | — | 5:43 | — | — | 5:45 | — | — |
 | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:47 | — |
mm | — | — | 1 | — | 4 | — | — | 3 | — | — | — | 1 | — | — | — | 1 | 1 | — | — | — |
Temp °C | 28 | 27 | 28 | 29 | 27 | 29 | 29 | 27 | 28 | 29 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 30 | 30 | 30 | 31 | 31 | 32 | 32 | 31 | 32 | 32 | 31 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | E 9 | E 9 | SSE 5 | SSE 5 | E 8 | SSE 9 | SSE 9 | S 9 | S 10 | S 9 | S 9 | S 9 | S 9 | S 8 | E 10 | S 8 | S 8 | S 8 | S 9 | S 9 |
| kJ | 127 | 94 | 10 | 9 | 84 | 129 | 197 | 281 | 349 | 332 | 282 | 270 | 270 | 241 | 69 | 187 | 169 | 171 | 159 | 95 |
Swell 2 Height (m) Direction Period (s) | S 6 | SE 10 | SE 10 | SE 10 | SSE 6 | E 8 | E 8 | E 8 | E 8 | E 9 | E 9 | E 9 | E 9 | E 10 | SW 9 | E 13 | E 10 | E 10 | E 10 | E 9 |
| kJ | 17 | 27 | 27 | 26 | 17 | 78 | 58 | 48 | 37 | 39 | 39 | 40 | 39 | 49 | 30 | 166 | 125 | 159 | 70 | 64 |
Swell 3 Height (m) Direction Period (s) | SE 10 | SW 9 | S 7 | S 7 | SE 10 | SE 10 | SE 10 | SE 10 | SE 11 | SE 11 | SE 11 | SE 11 | ESE 11 | E 14 | ENE 14 | SW 10 | SW 10 | SW 11 | E 12 | E 12 |
| kJ | 17 | 3 | 4 | 4 | 25 | 25 | 25 | 26 | 30 | 30 | 30 | 30 | 40 | 33 | 19 | 24 | 35 | 57 | 72 | 72 |
Wind waves Height (m) Direction Period (s) | — | SE 4 | E 8 | E 8 | — | — | — | — | — | — | — | — | — | — | S 8 | — | — | — | — | ESE 5 |
| kJ | — | 15 | 140 | 140 | — | — | — | — | — | — | — | — | — | — | 224 | — | — | — | — | 9 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 370 | 12 | 12 | 370 | 12 | 12 | 351 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 225 | 351 | 12 | 12 | 399 | 12 |
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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