Surf Forecasts:
Tainohama surf forecast from 23 Aug 2026:
- Best quality surf: Monday 24 Aug, 6AM (local time) - 2.5ft (0.8m), 13s period, SE swell with glassy winds.
- Most powerful swell: Tuesday 25 Aug, 3AM (local time) - 10ft (3.0m), 15s period, SSE swell with 4,190 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 6AM (local time) - 2.5ft (0.8m), 13s period with SE 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 Monday (Aug 24) at 6AM. The primary swell is predicted to be 0.8m and 13s period with a secondary swell of 0.6m and 16s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Tainohama in the next 16 days are 3.0m 15s and forecast to arrive on Tuesday (Aug 25) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 2s period and expected on Friday (Aug 28) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Mon 24th Aug) | 2.5ft (0.8m) 13s |
| Best Surf | 6AM (Mon 24th Aug) | 2.5ft (0.8m) 13s |
| Most Powerful | 3AM (Tue 25th Aug) | 10ft (3.0m) 15s |
Table - best surf conditions forecast for Tainohama over the next 16 days.
The Lowdown
Gather 'round, crew. Rusty here with a look at what Tainohama has cookin' for you over the next couple of weeks. It's a mixed bag, but there are a couple of sessions you're gonna want to circle on the calendar.
We've got a bit of a quiet start, but things ramp up in a big way. Right now, the water's sitting right around 83°, which is pretty much what you'd expect for this time of year – no surprises there.
The first real glimmer of hope comes on Monday, the 24th of August. We're looking at a 4ft swell from the SE, but it's got a long, juicy 19-second period on it. That's proper groundswell energy. The morning starts clean with light southerly breezes, but that combo of a long period on an exposed reef break can sometimes make things a bit tricky, with long waits between sets. Still, it's got a beefy combined swell energy of 1288 (moderate wave energy), so there's some serious grunt in the water. Monday afternoon gets a bit bumpy with the cross-on wind.
Tuesday the 25th sees the swell muscle up to 12ft from the SSE, with that period dropping to a still-solid 15 seconds. The combined energy is a whopping 4671 (strong to very strong wave energy), which tells you this is serious power. For the experienced crew only – over 8ft is expert territory. The morning has that light S breeze (on-shore), but it's not too messy. If you've got the skill and the quiver for it, the size will be mind-blowing.
Then we hit a rough patch. Thursday the 27th and Friday the 28th morning actually starts to look decent. Friday the 28th morning, we get a 5ft S swell at 10 seconds with glassy conditions, and the combined energy is a moderate 518. The report says "expect very good surf conditions," and with that glassy surface, it'll be as clean as a whistle. It's a solid option for a more relaxed session.
Saturday the 29th morning is another one to note – 5ft from the S, again glassy with the ENE breeze, and a combined energy of 359. Clean, fun little waves for those looking to goof around without the crowd. Tainohama can get crowds "sometimes," so you might see a few heads.
We drift through a couple of days of onshore wind and smaller swell, but then the real standout window opens up at the beginning of September. On Tuesday the 1st of September, get ready. The morning is absolutely pristine – 7ft from the SSE with a 12-second period and glassy conditions. This is flagged as "excellent surf conditions for experienced surfers," and the combined swell energy is a strong 1399. The afternoon goes cross-offshore with a NE breeze, keeping things clean. This is your best bet of the whole outlook.
Wednesday the 2nd keeps the energy high, with 8ft from the SSE at 14 seconds. The morning is clean with a cross-off N breeze, and the energy is strong at 2156. This is still for the experienced surfer, but the quality looks top-notch.
Thursday the 3rd of September is a monster. We're talking 8ft from the S with a 15-second period, and that combined energy is sky-high at 3802. The morning has a clean cross-offshore wind from the ENE. This is big, powerful, and clean – the kind of session that will leave you shaking.
After that, things get wild and messy. Friday the 4th of September sees the swell hit a ludicrous 23ft with a 15-second period and a combined energy of 36318 (very strong wave energy). That's not for paddle surfing – that's for the big-wave chargers only, and even then, the wind is strong cross-onshore at 28 mph, making it a washing machine. It looks more interesting for kite surfing than paddle surfing.
Saturday the 5th is blown out, but we get a nice recovery. Sunday the 6th of September morning is a treat – 4ft from the S with an 11-second period, with a clean offshore N breeze. Good conditions. Monday the 7th of September keeps the offshore flow going with a steady N wind and consistent 3–3ft S swell. Solid little clean days to round it all out.
So, to wrap it up: your standout sessions are Tuesday the 1st of September for the best combo of size and glass, and Thursday the 3rd of September for the serious, clean, expert-level power. Don't sleep on Friday the 28th or Saturday the 29th of August for a fun, clean morning surf. The rest of the week has some windy gaps, but the quality at the start of September makes it all worth it.
Rusty.
Short Range ForecastMostly dry. Warm (max 30°C on Sun afternoon, min 25°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 23mm), heaviest during Thu night. Warm (max 30°C on Wed afternoon, min 25°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Sun 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | ||||||||||||||
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) | SE 13 | SE 12 | SE 19 | SE 16 | SSE 17 | SSE 14 | SSE 14 | S 14 | S 13 | S 12 | SSW 11 | SSW 11 | S 10 | SSE 9 | SSE 8 | SSE 8 | SSW 9 | S 8 | S 8 | S 8 |
Wave Graph | ||||||||||||||||||||
45 | 152 | 1254 | 2357 | 2215 | 3651 | 3096 | 2898 | 1912 | 911 | 486 | 256 | 349 | 237 | 116 | 89 | 111 | 109 | 82 | 84 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | cross-on | cross | glassy | cross-on | cross-on |
High Tide | 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 | 6:23AM2.03m | 6:55PM1.95m | |||||||
Low Tide | 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 | 12:43PM0.37m | 00:54AM0.53m | |||||||
— | — | 5:28 | — | — | 5:28 | — | — | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — | 5:31 | — | — | |
6:39 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — | — | 6:32 | — | — | 6:31 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 10 | 5 | 4 | 4 | — | 1 | 4 |
Temp °C | 30 | 27 | 30 | 29 | 26 | 30 | 29 | 26 | 30 | 30 | 28 | 30 | 28 | 27 | 29 | 29 | 26 | 29 | 29 | 27 |
Feels °C | 33 | 31 | 33 | 32 | 29 | 33 | 30 | 30 | 33 | 32 | 32 | 33 | 28 | 30 | 33 | 31 | 30 | 33 | 31 | 32 |
Swell 1 Height (m) Direction Period (s) | S 8 | SE 12 | SE 19 | SE 16 | SE 14 | SSE 14 | SSE 14 | S 14 | S 13 | S 12 | SSW 11 | SSE 8 | S 10 | SSE 9 | SSE 8 | SSE 8 | SSW 9 | S 8 | S 8 | S 8 |
30 | 152 | 1254 | 2357 | 1704 | 3651 | 3096 | 2898 | 1912 | 911 | 486 | 177 | 349 | 237 | 116 | 89 | 111 | 109 | 82 | 84 | |
Swell 2 Height (m) Direction Period (s) | SE 13 | SSW 9 | S 8 | SSW 8 | SSE 17 | E 15 | E 14 | E 13 | SE 9 | SE 9 | SE 9 | SSW 11 | E 11 | SSW 9 | SSW 9 | SSW 9 | SSE 7 | ESE 9 | ESE 9 | SE 11 |
45 | 30 | 21 | 21 | 2215 | 17 | 16 | 32 | 144 | 190 | 159 | 256 | 10 | 46 | 58 | 79 | 34 | 16 | 16 | 19 | |
Swell 3 Height (m) Direction Period (s) | ESE 11 | S 8 | SW 9 | S 8 | SW 8 | E 15 | SW 9 | — | E 13 | E 13 | E 12 | E 12 | SE 16 | E 11 | SE 10 | SE 10 | ESE 9 | SSE 9 | SSW 10 | SW 10 |
23 | 21 | 13 | 11 | 18 | 17 | 13 | — | 30 | 29 | 25 | 11 | 10 | 9 | 23 | 14 | 17 | 9 | 11 | 17 | |
Wind waves Height (m) Direction Period (s) | SSW 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | N 3 | — | — | — |
1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 3 | 32 | 3 | 3 | 3 | 3 | 3 | 32 | 3 | 3 | 32 | 3 | 3 | 3 | 3 | 0 | 3 | 2 | 0 | 3 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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.











