Surf Forecasts:
Tainohama surf forecast from 22 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 12AM (local time) - 10ft (3.0m), 16s period, SSE swell with glassy winds.
- Most powerful swell: Tuesday 25 Aug, 3PM (local time) - 11ft (3.5m), 15s period, SSE swell with 6,366 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 9AM (local time) - 2ft (0.6m), 8s period with SSW 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 Sunday (Aug 23) at 9AM. The primary swell is predicted to be 0.6m and 8s period with a secondary swell of 0.4m and 11s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Tainohama in the next 16 days are 3.5m 15s and forecast to arrive on Tuesday (Aug 25) at 3PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Sun 23rd Aug) | 2ft (0.6m) 8s |
| Best Surf | 12AM (Tue 25th Aug) | 10ft (3.0m) 16s |
| Most Powerful | 3PM (Tue 25th Aug) | 11ft (3.5m) 15s |
Table - best surf conditions forecast for Tainohama over the next 16 days.
The Lowdown
Alright, let’s get into it for Tainohama. This is a reef break that takes a south swell, but the next couple of weeks are a bit of a mixed bag. We’ve got a few moments that look promising, but a lot of chaff to sift through.
We start off the run with very little to get excited about. Sunday the 23rd, we’ve got a tiny 2ft swell out of the SSW with a short period of 8 seconds, and while the morning is glassy, the wave energy is weak (95). It’s surfable, but it’s barely a ripple. Not worth paddling out for.
The real action doesn’t kick in until Tuesday the 25th. That morning, a solid 12ft swell from the SSE rolls in with a long 15-second period, pushing moderate to strong wave energy (5833). The wind is light cross-onshore, but it’s still clean enough for experienced surfers. That’s a standout session for the first week: big, powerful waves. By the afternoon, same size and period, with a bit more onshore wind but still manageable.
Wednesday the 26th holds some size, 10ft to 8ft from the south, but the risk of thunderstorms and onshore winds make it sketchy. The energy is still high (3632 in the morning), but the conditions are marginal.
By Thursday the 27th, the swell drops back to 6ft and the period shortens, and we’re into a run of poor or marginal surf with cross-onshore winds through to the end of August.
Then, things start to look up. On Tuesday the 1st of September, the wind switches to a light cross-offshore breeze from the NNE. The swell isn’t huge – around 3ft from the ESE and south – but the period is long (13 and 12 seconds), and the waves are clean. Energy is moderate (597, 556). It’s a good, clean, fun-sized day.
The best of the forecast, though, comes on Thursday the 3rd of September. The morning kicks off with a 8ft SE swell with a very long 17-second period, producing strong energy (3639). The wind is a clean cross-offshore from the north. This is the real standout: big, long-period groundswell, clean faces, and a reef break setup. This is for experienced surfers only, as it’s well over 8ft. The afternoon is similar, with 8ft and a 14-second period, and the same clean wind. Excellent conditions for those who know what they’re doing.
After that, it gets messy again. The 4th and 5th of September see heavy rain and strong onshore winds, making a mess of the surf. By the 7th, it’s still poor. The water temperature is about average for the time of year, nothing unusual to report there.
So, for Tainohama, the call is simple: wait for Tuesday the 3rd of September for the best, most powerful, and cleanest surf of the whole window. Tuesday the 1st is a nice warm-up. The rest is a lot of waiting.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sat night. Warm (max 30°C on Sun morning, min 25°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Wed afternoon. Warm (max 30°C on Thu morning, min 26°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | ||||||||||||||
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) | SSW 8 | SSW 8 | SE 13 | SE 12 | SE 16 | SE 16 | SSE 16 | SSE 15 | SSE 15 | SSE 14 | S 13 | S 13 | SSW 12 | SSE 9 | SSE 8 | SSE 9 | S 10 | SSE 10 | SSE 9 |
Wave Graph | |||||||||||||||||||
55 | 54 | 45 | 152 | 793 | 1852 | 5089 | 5799 | 6366 | 4832 | 3389 | 1805 | 995 | 459 | 360 | 721 | 865 | 998 | 601 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross-on | cross-on | on | cross-on | glassy | cross-on | on | cross-on | on | on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on |
High Tide | 00:26AM1.55m | 4:19PM1.60m | 2:18AM1.59m | 4:51PM1.71m | 3:30AM1.70m | 5:17PM1.80m | 4:23AM1.82m | 5:43PM1.86m | 5:06AM1.93m | 6:07PM1.91m | 5:46AM2.00m | 6:31PM1.94m | |||||||
Low Tide | 8:35AM0.60m | 9:25PM1.30m | 9:39AM0.48m | 10:14PM1.17m | 10:26AM0.38m | 10:50PM1.03m | 11:05AM0.31m | 11:22PM0.88m | 11:40AM0.28m | 11:52PM0.74m | 12:12PM0.30m | 00:23AM0.62m | |||||||
— | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — | |
6:40 | — | 6:39 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — | — | 6:32 | — | |
mm | 1 | — | — | — | — | — | — | — | — | 1 | 2 | 3 | — | — | — | 1 | — | — | 1 |
Temp °C | 27 | 30 | 29 | 26 | 30 | 29 | 26 | 29 | 30 | 26 | 28 | 29 | 27 | 30 | 29 | 26 | 29 | 29 | 27 |
Feels °C | 31 | 33 | 31 | 30 | 33 | 31 | 30 | 31 | 32 | 31 | 31 | 32 | 31 | 33 | 30 | 29 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | SSW 8 | SSW 8 | S 8 | SE 12 | SE 16 | SE 16 | SSE 16 | SSE 15 | SSE 15 | SSE 14 | S 13 | S 13 | SSW 12 | SSE 9 | SSE 8 | SSE 9 | S 10 | SSE 10 | SSE 9 |
55 | 54 | 30 | 152 | 793 | 1852 | 5089 | 5799 | 6366 | 4832 | 3389 | 1805 | 995 | 459 | 360 | 721 | 865 | 998 | 601 | |
Swell 2 Height (m) Direction Period (s) | ESE 10 | ESE 11 | SE 13 | SSW 9 | SSW 8 | S 8 | E 11 | E 15 | E 14 | E 13 | E 13 | SE 9 | SE 9 | SSW 11 | SSW 9 | E 11 | E 10 | E 14 | SE 12 |
10 | 38 | 45 | 30 | 13 | 12 | 10 | 17 | 16 | 32 | 30 | 311 | 314 | 359 | 110 | 9 | 8 | 4 | 6 | |
Swell 3 Height (m) Direction Period (s) | ESE 13 | ESE 6 | ESE 11 | S 8 | SW 8 | SSW 8 | SW 8 | E 15 | — | — | — | E 13 | E 12 | E 12 | SW 10 | SSW 10 | SE 14 | — | E 12 |
16 | 3 | 23 | 21 | 11 | 6 | 17 | 17 | — | — | — | 29 | 11 | 11 | 50 | 10 | 8 | — | 3 | |
Wind waves Height (m) Direction Period (s) | SW 2 | — | — | — | — | — | — | — | — | — | SE 10 | — | — | — | — | — | — | ESE 6 | E 6 |
1 | — | — | — | — | — | — | — | — | — | 213 | — | — | — | — | — | — | 180 | 207 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 3 | 0 | 3 | 3 | 3 | 32 | 0 | 413 | 3 | 3 | 3 | 32 | 3 | 3 | 32 | 3 | 3 | 3 | 3 |
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.











