Surf Forecasts:
Tainohama surf forecast from 9 Aug 2026:
- Best quality surf: Monday 10 Aug, 6AM (local time) - 3.5ft (1.1m), 11s period, S swell with offshore winds.
- Most powerful swell: Monday 10 Aug, 6AM (local time) - 3.5ft (1.1m), 11s period, S swell with 267 kJ wave energy.
- Next surfable swell (1★+): Monday 10 Aug, 6AM (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 6AM. The primary swell is predicted to be 1.1m and 11s period with a secondary swell of 0.8m and 13s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Tainohama in the next 16 days are 1.1m 11s and forecast to arrive on Monday (Aug 10) at 6AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Tuesday (Aug 11) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Mon 10th Aug) | 3.5ft (1.1m) 11s |
| Best Surf | 6AM (Mon 10th Aug) | 3.5ft (1.1m) 11s |
| Most Powerful | 6AM (Mon 10th Aug) | 3.5ft (1.1m) 11s |
Table - best surf conditions forecast for Tainohama over the next 16 days.
The Lowdown
Alright, Rusty here again, same story but in feet and miles per hour.
For a long stretch, it’s going to be a real slow grind. Over a week of pretty slim pickings before anything worthwhile shows up. The first surf that’s even worth talking about is on Monday, August 10th, but even then, it’s nothing to get too excited about.
Monday the 10th has a bit of S swell around 3 to 4 ft, with a 10-second period. The wind is cross-off from the N and NNE, which should keep things fairly tidy, but the energy is moderate. The morning is the pick, but it’s still just a marginal call.
Tuesday the 11th and Wednesday the 12th are a write-off. Wind picks up from the NNE and then swings onshore from the SSE, killing any chance of a decent wave. The swell drops and conditions are poor.
Then we hit a gap. From Thursday the 13th through to Sunday the 23rd of August, there are a few mornings where it goes glassy, with tiny waves around 2 to 3 ft from the S or SE. The swell energy is weak. There might be a tiny, clean ripple on the 13th, 14th, 15th, 20th, and 21st in the mornings, but it’s really just ordinary. For a surfer, that’s barely worth paddling out for unless you’re desperate.
Now, the standout – and I mean the only real standout – comes right at the tail end. On Monday the 24th of August, things start to change. That morning you’ve got a 3 ft SE swell with a very long 16-second period. The energy jumps to moderate. The wind is light and onshore from the S, so it’s not perfect yet.
But hold onto your board for Tuesday the 25th of August morning. That is the one. We’ve got a solid 6 ft swell from the SE, with a 12-second period. That’s proper groundswell. The combined energy is strong, and with glassy conditions and a slight air from the SSE, Tainohama is going to be clean, lined up, and packing a punch. This is the session to aim for. Just a heads up, that kind of size is for the advanced crew – if you’re a beginner, this one’s going to be too much. And being a reef break, that long-period SE swell will wrap in nicely. It’s gonna be good.
Crowds can show up here sometimes, so for that Tuesday morning, get in early if you can.
Rusty.
Short Range ForecastSome drizzle, heaviest during Wed afternoon. Warm (max 30°C on Mon morning, min 23°C on Mon night). Winds decreasing (fresh winds from the NNE on Tue morning, calm by Tue night). | Days 5-7 Weather SummaryHeavy rain (total 32mm), heaviest during Wed night. Warm (max 29°C on Sat morning, min 22°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | ||||||||||||||
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 11 | S 10 | S 10 | S 10 | S 10 | S 10 | SSW 10 | S 10 | SSW 10 | SSW 10 | SSW 9 | SSW 9 | SSW 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 289 | 242 | 190 | 216 | 216 | 212 | 173 | 92 | 92 | 131 | 90 | 88 | 84 | 79 | 57 | 54 | 87 | 79 | 79 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | cross-off | off | cross-off | cross-off | off | on | on | glassy | glassy | cross-on | glassy | glassy | on | glassy | glassy | on | glassy |
High Tide | 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 | 9:53PM1.26m | 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 | — | — | 5:20 | — | — | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:22 | — | — |
 | 6:54 | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — |
mm | — | — | — | — | — | — | — | — | 1 | 14 | 5 | 9 | 4 | — | — | — | — | — | — |
Temp °C | 26 | 30 | 30 | 26 | 29 | 30 | 25 | 26 | 24 | 23 | 25 | 26 | 25 | 28 | 28 | 25 | 29 | 29 | 26 |
Feels °C | 30 | 30 | 31 | 27 | 25 | 27 | 27 | 28 | 25 | 26 | 28 | 28 | 28 | 31 | 29 | 28 | 31 | 31 | 29 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 10 | S 10 | S 10 | S 10 | S 10 | SSW 10 | S 10 | S 10 | SSW 10 | SSW 9 | SSW 9 | SSW 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 |
| kJ | 289 | 242 | 190 | 216 | 216 | 212 | 173 | 87 | 67 | 131 | 90 | 88 | 84 | 79 | 57 | 54 | 87 | 79 | 79 |
Swell 2 Height (m) Direction Period (s) | ESE 13 | E 12 | E 12 | E 12 | E 11 | E 11 | E 11 | SSW 10 | SSW 10 | E 10 | E 6 | ESE 6 | ESE 4 | E 9 | ESE 9 | E 11 | SE 10 | SE 9 | ESE 8 |
| kJ | 286 | 193 | 144 | 101 | 63 | 59 | 35 | 92 | 92 | 17 | 6 | 6 | 3 | 15 | 16 | 35 | 37 | 31 | 28 |
Swell 3 Height (m) Direction Period (s) | SSW 11 | SSW 11 | SW 11 | SE 14 | SE 13 | SE 13 | NE 4 | E 10 | E 10 | SE 12 | SE 12 | SE 12 | E 10 | SE 11 | SE 11 | SE 11 | E 10 | E 9 | SE 12 |
| kJ | 219 | 78 | 56 | 31 | 28 | 27 | 4 | 18 | 19 | 24 | 23 | 22 | 17 | 19 | 19 | 19 | 30 | 28 | 23 |
Wind waves Height (m) Direction Period (s) | — | N 3 | NE 3 | NE 4 | NE 5 | NE 5 | N 4 | NE 3 | E 3 | — | — | ESE 4 | — | E 5 | — | — | — | — | — |
| kJ | — | 2 | 4 | 14 | 17 | 49 | 11 | 3 | 1 | — | — | 4 | — | 4 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 18 | 21 | 0 | 27 | 27 | 0 | 3 | 3 | 0 | 0 | 21 | 0 | 0 | 3 | 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.
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