Surf Forecasts:
Cape Toi surf forecast from 20 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 3PM (local time) - 18ft (5.5m), 16s period, ESE swell with cross-shore winds.
- Most powerful swell: Wednesday 26 Aug, 12AM (local time) - 25ft (7.5m), 15s period, E swell with 24,647 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 12AM (local time) - 2ft (0.6m), 8s 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 Friday (Aug 21) at 12AM. The primary swell is predicted to be 0.6m and 8s 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 7.5m 15s and forecast to arrive on Wednesday (Aug 26) at 12AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 9s period and expected on Thursday (Aug 20) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Fri 21st Aug) | 2ft (0.6m) 8s |
| Best Surf | 3PM (Tue 25th Aug) | 18ft (5.5m) 16s |
| Most Powerful | 12AM (Wed 26th Aug) | 25ft (7.5m) 15s |
Table - best surf conditions forecast for Cape Toi over the next 16 days.
The Lowdown
Alright, I’ll be straight with you – this run-in at Cape Toi is pretty quiet for the first week. We’re looking at a long, drawn-out gap with almost nothing workable until the 24th of August. From right now, we’ve got tiny, weak, cross-onshore junk with swell heights under 2 ft, period short, and combined energy barely cracking 80-90 (weak). That’s just not worth paddling out for.
The first real glimmer comes on the morning of Monday the 24th. The swell jumps up to 6 ft from the SE with a long 16-second period, so there’s proper groundswell energy – combined energy is 1988 (moderate). But the wind is cross-onshore from the ENE at 12 mph, and the call is poor surf. Not your day just yet.
By Monday afternoon, the swell is up to 8 ft from the SE, still with that 17-second period, and combined energy jumps to 3579 (moderate-to-strong). Wind is cross-shore at 16 mph, making it choppy, but it’s at least in the marginal range. Still, not the standout.
Now, Tuesday the 25th of August morning is the first real standout. Overnight, the wind goes clean, cross-offshore from the NE at 22 mph, and the swell is a solid 16 ft from the ESE with a 16-second period. Combined energy is massive at 13671 (strong). The reef at Cape Toi is gonna be handling proper groundswell, and with that offshore flow, it’s going to be clean. But here’s the thing: 16 ft is way over 8 ft – this is expert territory only. The period is long, so it’ll be lined up, but that size is not for the faint of heart. Crowds are possible here, so you might have a few other chargers, but with this size, it’ll thin out.
Tuesday afternoon, the swell hits 18 ft from the ESE, still 16-second period, but wind swings cross-shore and gets messy. The combined energy is 16228 (very strong). It’s borderline too big and messy for paddle surfing – honestly, this setup looks more interesting for kite surfing than a standard paddle session.
Wednesday the 26th of August morning is even bigger: 20 ft from the E, 14-second period, with cross-offshore N wind at 28 mph. Clean again, but 20 ft is purely for experts. Combined energy is 15788 (very strong). That’s a heavy, powerful day, but only if you’ve got the skills.
The next standout is Thursday the 27th of August morning. The swell drops to a more manageable 12 ft from the ENE, 11-second period, combined energy at 3311 (strong). The wind is offshore from the NW at only 6 mph – that’s light and clean, glassy conditions. This is excellent for experienced surfers. 12 ft is still over 8 ft, so it’s expert-only, but with light offshore and a reef break, the shape will be beautiful. Crowds are possible, but with the size, it’ll be select.
After that, it’s a messy drop-off. From Friday the 28th into the first week of September, the swell stays big (8 ft to 21 ft) but the wind is constant cross-shore or cross-onshore, often strong, and the conditions are poor. The combined energy dips from 9320 down to 344 (weak to moderate). By the end of the run, near gale to gale-force winds from the NE and ENE make it flat-out blown out. Not worth it.
The water temperature is around 84°F, with a +0.2°F anomaly – about average for the time of year, so no surprises there.
So, the takeaway: the best surf on offer is Tuesday the 25th of August morning for the big, clean, expert-only swell, and Thursday the 27th of August morning for the glassy, still expert-level but slightly more forgiving conditions. Everything else is a write-off.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Sat night. Warm (max 29°C on Thu afternoon, min 26°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 6mm), mostly falling on Sun night. Warm (max 28°C on Sun afternoon, min 26°C on Sun night). Winds increasing (light winds from the E on Sun night, near gales from the NNE by Tue night). | |||||||||||||||||||
Thu 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
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 8 | E 8 | SE 11 | E 9 | E 9 | SE 11 | E 9 | E 10 | E 10 | E 11 | SE 15 | SE 16 | SE 17 | SE 17 | ESE 16 | ESE 16 | E 15 | E 14 | E 13 | ENE 12 |
Wave Graph | ||||||||||||||||||||
58 | 48 | 35 | 39 | 39 | 29 | 40 | 49 | 125 | 119 | 479 | 1611 | 3399 | 7795 | 13671 | 16228 | 24647 | 13536 | 10394 | 6752 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-off | cross | cross | cross-off | cross-off | off |
High Tide | 10:17PM1.61m | 2:09PM1.35m | 11:13PM1.51m | 4:13PM1.46m | 1:18AM1.46m | 4:47PM1.57m | 2:57AM1.53m | 5:12PM1.68m | 3:55AM1.64m | 5:35PM1.78m | 4:39AM1.76m | 5:57PM1.86m | ||||||||
Low Tide | 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 | 10:46AM0.40m | 11:12PM1.00m | 11:20AM0.30m | 11:39PM0.87m | |||||||
— | — | 5:43 | — | — | 5:43 | — | — | 5:43 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | |
6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | |
mm | — | — | 1 | 1 | — | 1 | — | 5 | 1 | — | 2 | 1 | — | — | — | — | 2 | 1 | — | — |
Temp °C | 29 | 27 | 28 | 29 | 27 | 29 | 28 | 27 | 28 | 28 | 27 | 27 | 28 | 26 | 28 | 28 | 28 | 28 | 30 | 29 |
Feels °C | 32 | 32 | 32 | 32 | 32 | 31 | 30 | 30 | 31 | 30 | 30 | 28 | 29 | 27 | 26 | 26 | 25 | 25 | 29 | 32 |
Swell 1 Height (m) Direction Period (s) | SSE 9 | S 9 | S 9 | S 9 | S 9 | S 8 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SE 15 | SE 16 | SE 17 | SE 17 | ESE 16 | ESE 16 | ESE 15 | E 14 | E 13 | ENE 12 |
202 | 230 | 192 | 188 | 155 | 116 | 129 | 153 | 141 | 110 | 479 | 1611 | 3399 | 7795 | 13671 | 16228 | 21397 | 13536 | 10394 | 6752 | |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 9 | E 9 | ENE 9 | E 9 | E 10 | ENE 13 | E 11 | ENE 11 | SSW 10 | SSW 10 | SSW 10 | SSW 9 | — | — | — | SSW 10 | SSW 10 |
58 | 48 | 35 | 39 | 39 | 26 | 39 | 49 | 34 | 119 | 153 | 152 | 75 | 80 | 29 | — | — | — | 20 | 34 | |
Swell 3 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 11 | SE 11 | SE 11 | SE 11 | ESE 11 | E 14 | SE 14 | SE 16 | SSW 9 | — | E 12 | ENE 12 | — | — | — | — | — | — |
25 | 25 | 29 | 30 | 30 | 29 | 40 | 34 | 33 | 68 | 84 | — | 46 | 49 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | ESE 3 | — | E 6 | ESE 4 | ESE 5 | E 10 | ESE 5 | ESE 5 | E 10 | E 6 | E 7 | — | — | E 15 | NNE 9 | NNE 9 | NNE 9 |
— | — | — | 4 | — | 18 | 12 | 17 | 125 | 23 | 31 | 377 | 134 | 199 | — | — | 24647 | 2252 | 2363 | 1717 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 12 | 0 | 12 | 12 | 12 | 12 | 351 | 12 | 12 | 351 | 12 | 225 | 370 | 12 | 99 | 399 | 504 | 504 | 12 | 0 |
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.











