
Surf Forecasts:
Tainohama surf forecast from 9 Aug 2026:
- Best quality surf: Monday 10 Aug, 12AM (local time) - 3.5ft (1.1m), 11s period, S swell with glassy winds.
- Most powerful swell: Sunday 9 Aug, 3PM (local time) - 4ft (1.2m), 12s period, SSW swell with 378 kJ wave energy.
- Next surfable swell (1★+): Monday 10 Aug, 12AM (local time) - 3.5ft (1.1m), 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 Monday (Aug 10) at 12AM. The primary swell is predicted to be 1.1m and 11s period with a secondary swell of 0.9m and 13s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Tainohama in the next 16 days are 1.2m 12s and forecast to arrive on Sunday (Aug 09) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Tuesday (Aug 11) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Mon 10th Aug) | 3.5ft (1.1m) 11s |
| Best Surf | 12AM (Mon 10th Aug) | 3.5ft (1.1m) 11s |
| Most Powerful | 3PM (Sun 9th Aug) | 4ft (1.2m) 12s |
Table - best surf conditions forecast for Tainohama over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what's on offer for this stretch of coast.
We're starting off with a bit of a flat spell. The first real chance of a surf comes up on Sunday the 9th at Tainohama, but to be honest, it's not looking like much. We've got a mixed-up, weak 4ft swell out of the SSW (852 combined energy) but the wind is on it and the tide is questionable. It'll be a struggle, not a session.
Things get a little more interesting on Monday the 10th. The swell drops slightly to around 4ft from the south, but the real win is the wind. A cross-offshore breeze from the north will clean things right up. The wave energy is still moderate at 513, but those clean conditions make it surfable. It's not pumping, but it's your best call in this first window if you're keen to get wet.
Tuesday the 11th sees the wind pick up strong out of the north, making it messy, and the swell energy drops right off (301). Best give it a miss.
Wednesday the 12th morning is where we get a little gem. Glassy offshore winds from the north and a small but clean 3ft SSW swell (222 energy). That's a proper window for a longboard or a fun mid-length. Late in the day the wind swings onshore and kills it.
After that, we drift into a long, quiet patch. From Thursday the 13th right through to Sunday the 16th, the swell is tiny, under 3ft, and mostly weak and wind-affected. A glassy morning on the 13th might give you a knee-high ripple, but don't expect much.
Now, after that lull, Monday the 17th brings a surprise. The morning is dead calm and glassy, with a new 4ft east swell arriving with a short period of 6 seconds (251 energy). It'll be a little crumbly and short-period, but with zero wind and clean conditions, it's a good time on the small stuff.
Tuesday the 18th is where things get serious. The swell jumps to 6ft from the east (906 energy), with a short period of 10 seconds. It's a bit of a messy mix with cross-shore winds, but the size is there. Tainohama is a reef, so that long period groundswell will wrap in nicely, just be aware that short-period east swell can be a bit unruly.
The real standout comes on Wednesday the 19th. We're looking at a strong 8ft to 10ft easterly swell with a combined energy hitting 2473. That's a serious, expert-only day. The wind is a cross-onshore, which will chop it up, but for the crew who know the reef, the power is there. This is not for beginners; this is big, heavy, powerful surf.
Thursday the 20th is the pick of the later period. The swell drops back to a much more manageable 4ft from the east (289 energy), and the morning is dead glassy. Clean, lined-up sets on an easing swell – that is a golden hour window.
The rest of the run into the 24th is a mix of small glassy mornings and onshore afternoons. Nothing else truly lights up, but the Sunday the 23rd morning has a 5ft south swell (525 energy) with glassy conditions, which could offer a fun, clean session before the wind comes up.
The water temp is sitting at 84°F, which is a touch warmer than you'd normally expect for the start of August – a nice little bonus if you're in the water.
Overall, the clear standouts are Wednesday the 19th for the big-wave crew (if you're an expert) and Thursday the 20th morning for everyone else. The long, quiet spell from the 13th to the 16th is a bit of a bummer, but the second week has some size and promise.
Rusty.
Short Range ForecastSome drizzle, heaviest during Mon afternoon. Warm (max 30°C on Mon afternoon, min 23°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 24mm), heaviest during Thu afternoon. Warm (max 27°C on Wed morning, min 22°C on Thu afternoon). Wind will be generally light. | ||||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | |||||||||||||||
AM | 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) | SSW 12 | SSW 12 | S 11 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | SSW 10 | SSW 11 | SSW 10 | SSW 9 | SSW 9 | SSW 9 | S 9 | S 9 | S 9 | S 8 | S 9 | S 9 |
Wave Graph | |||||||||||||||||||||
384 | 378 | 289 | 242 | 190 | 260 | 212 | 212 | 221 | 177 | 161 | 131 | 90 | 86 | 84 | 57 | 57 | 54 | 51 | 59 | 79 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | glassy | cross-off | cross-off | off | cross-off | cross-off | off | off | on | on | glassy | cross | glassy | on | on | glassy | glassy | on | glassy |
High Tide | 4:44PM1.65m | 2:58AM1.66m | 5:17PM1.75m | 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 | ||||||||
Low Tide | 9:18AM0.49m | 9:53PM1.26m | 10:11AM0.37m | 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 | |||||||
5:18 | — | — | 5:18 | — | — | 5:20 | — | — | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:22 | — | — | |
— | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — | |
mm | — | — | — | — | 1 | — | — | — | — | — | — | — | 2 | 7 | 10 | 4 | 1 | — | — | — | 1 |
Temp °C | 29 | 28 | 26 | 29 | 30 | 26 | 29 | 30 | 25 | 27 | 26 | 24 | 27 | 25 | 24 | 27 | 27 | 25 | 28 | 29 | 25 |
Feels °C | 32 | 31 | 30 | 31 | 33 | 27 | 26 | 27 | 24 | 29 | 28 | 26 | 29 | 27 | 28 | 30 | 28 | 28 | 31 | 30 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 12 | SSW 12 | S 11 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | SSW 10 | SSW 11 | SSW 10 | SSW 9 | SSW 9 | ESE 5 | S 9 | S 9 | S 9 | S 8 | S 9 | S 9 |
384 | 378 | 289 | 242 | 190 | 260 | 212 | 212 | 221 | 177 | 161 | 131 | 90 | 86 | 24 | 57 | 57 | 54 | 51 | 59 | 79 | |
Swell 2 Height (m) Direction Period (s) | ESE 13 | E 13 | ESE 13 | E 12 | E 12 | E 12 | E 11 | E 11 | E 10 | E 10 | S 10 | ESE 5 | ESE 5 | SE 12 | SSW 9 | E 9 | ESE 4 | E 10 | E 10 | SE 10 | SE 10 |
372 | 339 | 286 | 193 | 144 | 101 | 62 | 37 | 33 | 18 | 18 | 9 | 8 | 22 | 84 | 14 | 6 | 32 | 33 | 35 | 34 | |
Swell 3 Height (m) Direction Period (s) | SSE 7 | S 11 | SSW 11 | SSW 11 | SSW 11 | SE 14 | SE 13 | SE 13 | SE 13 | SE 13 | E 10 | SE 12 | SE 12 | E 9 | SE 12 | SE 11 | E 12 | SE 11 | SE 11 | E 10 | E 11 |
96 | 181 | 219 | 78 | 76 | 31 | 27 | 27 | 27 | 27 | 8 | 24 | 23 | 7 | 22 | 20 | 24 | 19 | 29 | 34 | 35 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | NNE 3 | NNE 4 | NE 5 | NE 4 | NE 5 | — | NE 3 | E 5 | E 5 | E 5 | — | ESE 4 | SE 4 | — | — | — | — |
— | — | — | — | 3 | 6 | 11 | 20 | 14 | — | 2 | 27 | 22 | 11 | — | 7 | 6 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 3 | 3 | 0 | 0 | 0 | 0 | 21 | 21 | 0 | 0 | 3 | 3 | 0 | 3 | 0 | 36 | 406 | 0 | 0 | 3 | 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.











