
Surf Forecasts:
Tainohama surf forecast from 10 Aug 2026:
- Best quality surf: Tuesday 11 Aug, 6AM (local time) - 3.5ft (1.0m), 11s period, S swell with offshore winds.
- Most powerful swell: Monday 17 Aug, 12PM (local time) - 4ft (1.2m), 10s period, E swell with 262 kJ wave energy.
- Next surfable swell (1★+): Tuesday 11 Aug, 6AM (local time) - 3.5ft (1.0m), 11s period with S swell.
Best Forecast Surf Conditions for Tainohama this week:
The surf forecast for Tainohama over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 11) at 6AM. The primary swell is predicted to be 1.0m and 11s period with a secondary swell of 0.5m and 11s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Tainohama in the next 16 days are 1.2m 10s and forecast to arrive on Monday (Aug 17) at 12PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Tuesday (Aug 11) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Tue 11th Aug) | 3.5ft (1.0m) 11s |
| Best Surf | 6AM (Tue 11th Aug) | 3.5ft (1.0m) 11s |
| Most Powerful | 12PM (Mon 17th Aug) | 4ft (1.2m) 10s |
Table - best surf conditions forecast for Tainohama over the next 16 days.
The Lowdown
G’day, Rusty here, and I’ve gotta be straight with you – the next week or so at Tainohama is a bit of a grind. The first solid surfable day actually kicks off on Wednesday morning, 12 August, after a flat start to the week. The swell is tiny – only 2ft from the SSW with a 10-second period, and the combined energy is weak (196). But the wind is glassy, dead calm, so the surface will be clean as a whistle. This is a reef break, advanced only, and it’s not giving much push, but if you’re desperate for a paddle, it’s a session. The water temp is about average for the time of year, nothing wild.
Friday morning, 14 August, is a write-off – onshore wind and weak swell. Same story rolls through the weekend. Saturday morning, 15 August, has another glassy window with the same tiny 2ft SSW swell and 160 energy – surfable but very ordinary.
Then we hit a bit of a dead zone. From Sunday 16 August right through to Thursday 20 August, it’s all poor surf conditions with onshore or cross-onshore wind and small, gutless waves. A few mornings have glassy conditions but the swell is just too small to get excited about.
The first real standout pops up on Friday morning, 21 August. The swell kicks up to 4ft from the S with a 9-second period, and the combined energy hits moderate (270). The wind is glassy – dead calm. That’s clean, proper surfable waves. The best of the whole forecast. Friday afternoon holds similar with 4ft and glassy conditions (247 energy). This is the pick of the bunch.
Saturday morning, 22 August, is still glassy but the swell drops back to 3ft, so it’s a step down.
Now, look ahead to Tuesday 25 August. The morning shows a 4ft SE swell with a long 13-second period – that’s groundswell, and the combined energy spikes to 693 (strong). But it’s onshore wind, so the quality is questionable. The afternoon jumps to 8ft from the SE with a 14-second period and a massive 1990 energy – that’s very strong, but again, onshore wind and poor conditions. Too big for beginners, and the long period means it’ll be best on the reef, but the wind is blowing it out.
The real dark horse is Wednesday morning, 26 August. We get 4ft from the ESE with an 11-second period, solid energy (473), and glassy wind. That’s a quality morning session, almost a week and a half out, so keep an eye on it.
Overall, the best day is Friday 21 August – glassy, 4ft S swell, clean. If you’re lucky, Wednesday 26 August could be a bonus. The rest is pretty flat or blown out. Crowds at Tainohama are sometimes an issue, so get in early on the good days.
Rusty.
Short Range ForecastModerate rain (total 17mm), heaviest on Thu morning. Warm (max 29°C on Tue afternoon, min 22°C on Mon night). Winds decreasing (fresh winds from the N on Tue morning, calm by Tue night). | Days 5-7 Weather SummaryLight rain (total 6mm), mostly falling on Sat night. Warm (max 29°C on Sat morning, min 24°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | ||||||||||||||
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) | S 10 | S 10 | SSW 10 | SSW 10 | SSW 10 | S 10 | SSW 10 | SSW 9 | SSW 9 | S 9 | S 9 | S 9 | S 8 | S 10 | S 9 | S 10 | S 9 | S 9 | ESE 6 |
Wave Graph | |||||||||||||||||||
216 | 216 | 173 | 173 | 92 | 87 | 125 | 88 | 86 | 81 | 78 | 56 | 71 | 90 | 83 | 122 | 81 | 59 | 58 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | cross-off | glassy | on | on | cross-on | on | cross-on | on | on | cross | glassy | on | cross-on | on | cross-on | glassy |
High Tide | 3:58AM1.76m | 5:46PM1.83m | 4:47AM1.87m | 6:13PM1.88m | 5:29AM1.95m | 6:38PM1.92m | 6:09AM2.00m | 7:03PM1.93m | 6:47AM2.00m | 7:28PM1.93m | 7:26AM1.97m | 7:52PM1.91m | |||||||
Low Tide | 10:39PM1.15m | 10:54AM0.28m | 11:15PM1.03m | 11:32AM0.23m | 11:48PM0.90m | 12:07PM0.22m | 00:20AM0.79m | 12:40PM0.26m | 00:51AM0.69m | 1:11PM0.34m | 1:24AM0.61m | 1:41PM0.46m | 1:58AM0.57m | ||||||
— | 5:20 | — | — | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — | |
6:53 | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — | — | 6:47 | — | |
mm | — | — | — | — | 1 | 1 | 6 | 7 | 2 | 2 | — | — | — | — | — | 3 | — | 1 | — |
Temp °C | 26 | 28 | 29 | 24 | 27 | 27 | 25 | 27 | 27 | 25 | 28 | 28 | 25 | 29 | 29 | 25 | 29 | 29 | 26 |
Feels °C | 26 | 24 | 26 | 23 | 28 | 28 | 28 | 29 | 29 | 28 | 29 | 29 | 28 | 32 | 30 | 27 | 31 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | S 10 | S 10 | SSW 10 | SSW 10 | S 9 | S 10 | SSW 10 | SSW 9 | SSW 9 | S 9 | S 9 | S 9 | S 8 | S 10 | S 9 | S 10 | S 9 | S 9 | ESE 6 |
216 | 216 | 173 | 173 | 85 | 87 | 125 | 88 | 86 | 81 | 78 | 56 | 71 | 90 | 83 | 122 | 81 | 59 | 58 | |
Swell 2 Height (m) Direction Period (s) | E 12 | E 11 | E 11 | E 11 | SSW 10 | SSW 10 | E 10 | SE 12 | E 9 | SE 3 | E 9 | ESE 9 | E 10 | E 11 | E 10 | ESE 10 | E 10 | E 10 | S 9 |
101 | 63 | 61 | 35 | 92 | 58 | 8 | 23 | 7 | 3 | 15 | 16 | 16 | 64 | 75 | 77 | 52 | 31 | 54 | |
Swell 3 Height (m) Direction Period (s) | SE 14 | SE 13 | SE 13 | NE 4 | E 10 | E 10 | SE 12 | E 9 | SE 12 | E 10 | SE 11 | SE 11 | SE 11 | SSE 8 | SE 8 | SE 12 | SE 12 | SE 11 | E 10 |
31 | 28 | 7 | 3 | 19 | 8 | 24 | 7 | 22 | 16 | 19 | 19 | 19 | 6 | 9 | 23 | 49 | 46 | 31 | |
Wind waves Height (m) Direction Period (s) | NE 4 | NE 5 | NE 5 | N 4 | NNE 4 | — | SE 4 | ESE 3 | SE 3 | SE 3 | — | — | — | — | — | — | E 5 | ESE 5 | — |
15 | 18 | 42 | 11 | 3 | — | 3 | 2 | 3 | 4 | — | — | — | — | — | — | 27 | 51 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 21 | 21 | 0 | 0 | 3 | 3 | 64 | 3 | 3 | 3 | 32 | 3 | 0 | 3 | 3 | 3 | 32 | 0 |
Best forecast wave conditions in Shikoku | |||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||
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Information about the Tainohama Surf forecast
The above surf forecast table for Tainohama provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Tainohama can be found by selecting the local surf guide option on the grey menu. Our Tainohama 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 (Tainohama) 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 Tainohama 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.
Tainohama is 21 km (13 miles) from Anan. If you plan a holiday in Shikoku, look for hotels and other accommodation in Anan. Anan has rooms for a wide range of budgets as well as car hire and transport links.











