Surf Forecasts:
Cape Toi surf forecast from 15 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 3AM (local time) - 3ft (0.9m), 9s period, E swell with glassy winds.
- Most powerful swell: Wednesday 19 Aug, 9AM (local time) - 4.5ft (1.3m), 9s period, E swell with 251 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 3AM (local time) - 3ft (0.9m), 9s 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 Tuesday (Aug 18) at 3AM. The primary swell is predicted to be 0.9m and 9s 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 1.3m 9s and forecast to arrive on Wednesday (Aug 19) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 10s period and expected on Friday (Aug 21) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Tue 18th Aug) | 3ft (0.9m) 9s |
| Best Surf | 3AM (Tue 18th Aug) | 3ft (0.9m) 9s |
| Most Powerful | 9AM (Wed 19th Aug) | 4.5ft (1.3m) 9s |
Table - best surf conditions forecast for Cape Toi over the next 16 days.
The Lowdown
Alright, grab your board and let’s talk shop. It’s been a bit of a flat, frustrating stretch here lately, but the long-range charts are finally starting to show some life. Keep the faith, because there’s a solid window coming up, but you’re gonna have to be patient.
The next week is honestly a bit of a write-off for Cape Toi (Miyazaki). We’ve got waves, sure, but the wind is almost constantly blowing onshore or cross-onshore, making a mess of things. This week is all about small, weak, and choppy surf. The combined energy is mostly weak, sitting in the low to mid 100s to 200s, which is just not enough push to overcome that breeze. We’ve got a couple of days with storm clouds and a risk of thunderstorms, but the swell stays small and the wind is just going to ruin it. The water temp is sitting at 83.3°F, which is dead average for this time of year, so no drama there.
The gap between the current poor surf and the good stuff is about three to four days. From the 22nd to the 23rd, it’s just tiny leftovers, with energy dropping into the double digits and a messy, weak wind swell. It’s a real grind.
Then, things start to shift. On Monday the 24th, the morning is looking glassy with the energy starting to build. We’re still only seeing about 2ft of swell, but that ESE direction is lining up. The energy jumps to a moderate 424, a good sign.
But the real standout, the one you’ve been waiting for, is Tuesday the 25th. This is the day. The morning shows a solid 8ft of ESE groundswell with a 16-second period, which is proper groundswell. The wind goes glassy, and the energy reading is a massive 3273, signalling some serious power. This is big, clean, and powerful surf—a proper winter-style day in the middle of summer. It’s going to be a heavy, lined-up reef wave, and definitely for experienced surfers only. That size will push it well past beginner territory.
The day after, Wednesday the 26th, is still a great option. It’s pulling back a bit to a still-chunky 6ft, but it’s still got that clean, glassy morning with a 13-second period. Energy is still strong at 1213. Another good day for the more confident surfer.
After that, the swell starts to fade through the end of the month. Thursday the 27th is okay in the morning but the wind turns against us. Then it drops right off again. The last few days of the month see small waves return, but with cleaner, offshore winds in the mornings. That Sunday the 30th morning has a clean 2ft with a NW offshore breeze, but it’s nothing to get too excited about after the big days.
So, bottom line: the next week is a waste of time. But circle Tuesday the 25th on your calendar. That’s the one. A proper, powerful groundswell with perfect conditions. Big, clean Cape Toi at its best. Promise me you’ll be there.
Short Range ForecastSome drizzle, heaviest during Mon night. Warm (max 28°C on Sat afternoon, min 26°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 21mm), heaviest during Fri morning. Warm (max 28°C on Tue afternoon, min 26°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Sat 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | ||||||||||||||
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 10 | E 10 | E 10 | E 9 | E 9 | E 9 | E 8 | E 9 | E 6 | E 6 | ESE 6 | ESE 6 | ENE 6 | E 8 | E 9 | E 9 |
Wave Graph | ||||||||||||||||||||
208 | 208 | 200 | 208 | 240 | 235 | 192 | 164 | 130 | 127 | 113 | 251 | 163 | 173 | 142 | 169 | 66 | 69 | 39 | 39 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | cross-on | on | on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on |
High Tide | 8:03PM2.01m | 8:06AM1.96m | 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 | |||||||
Low Tide | 2:06AM0.52m | 2:17PM0.43m | 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 | ||||||||
— | — | 5:39 | — | — | 5:39 | — | — | 5:41 | — | — | 5:41 | — | — | 5:41 | — | — | 5:43 | — | — | |
6:58 | — | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | |
mm | — | — | — | — | — | — | — | 1 | — | — | — | 2 | — | 2 | 3 | 3 | 4 | 7 | 8 | 12 |
Temp °C | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 30 | 30 | 29 | 30 | 30 | 31 | 31 | 30 | 31 | 29 | 30 | 30 | 29 | 29 | 30 | 30 | 29 | 30 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | S 8 | S 8 | S 8 | SE 10 | SE 10 | SE 10 | ENE 6 | S 11 | E 9 | E 9 |
208 | 208 | 200 | 208 | 240 | 235 | 192 | 164 | 130 | 127 | 31 | 28 | 10 | 25 | 25 | 24 | 66 | 184 | 39 | 39 | |
Swell 2 Height (m) Direction Period (s) | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 4 | S 7 | SE 10 | SE 10 | SE 10 | SSW 8 | S 8 | S 8 | SSW 10 | E 8 | SE 11 | SE 11 |
69 | 66 | 68 | 65 | 43 | 28 | 28 | 28 | 6 | 26 | 27 | 27 | 27 | 13 | 10 | 10 | 10 | 69 | 30 | 30 | |
Swell 3 Height (m) Direction Period (s) | ESE 10 | ESE 12 | SE 12 | SE 12 | SE 11 | SE 11 | SE 11 | SE 11 | S 7 | SE 10 | E 9 | SW 9 | SW 9 | ESE 7 | SW 9 | W 9 | S 13 | ESE 11 | E 15 | E 14 |
11 | 14 | 22 | 21 | 19 | 31 | 30 | 30 | 9 | 17 | 6 | 3 | 3 | 5 | 3 | 1 | 3 | 23 | 17 | 15 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | SE 3 | — | — | — | — | E 8 | E 9 | E 6 | E 6 | ESE 6 | ESE 6 | SSE 7 | SSE 7 | S 10 | S 9 |
— | — | — | — | — | 1 | — | — | — | — | 113 | 251 | 163 | 173 | 142 | 169 | 175 | 153 | 605 | 601 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 399 | 52 | 44 | 338 | 12 | 50 | 661 | 12 | 12 | 370 | 12 | 327 | 883 | 12 | 327 | 597 | 12 | 327 | 370 | 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.











