Surf Forecasts:
Tainohama surf forecast from 25 Aug 2026:
- Best quality surf: Friday 28 Aug, 6AM (local time) - 3.5ft (1.1m), 8s period, S swell with cross-offshore winds.
- Most powerful swell: Wednesday 2 Sep, 12AM (local time) - 13ft (4.0m), 14s period, S swell with 5,690 kJ wave energy.
- Next surfable swell (1★+): Friday 28 Aug, 6AM (local time) - 3.5ft (1.1m), 8s 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 Friday (Aug 28) at 6AM. The primary swell is predicted to be 1.1m and 8s period with a secondary swell of 0.5m and 8s. Another secondary swell of 0.4m and 10s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Tainohama in the next 16 days are 4.0m 14s and forecast to arrive on Wednesday (Sep 02) at 12AM. 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+) | 6AM (Fri 28th Aug) | 3.5ft (1.1m) 8s |
| Best Surf | 6AM (Fri 28th Aug) | 3.5ft (1.1m) 8s |
| Most Powerful | 12AM (Wed 2nd Sep) | 13ft (4.0m) 14s |
Table - best surf conditions forecast for Tainohama over the next 16 days.
The Lowdown
Alright, Rusty here, lookin’ at Tainohama for the next couple of weeks.
Honestly, the first week is a bit of a bummer. We got some swell, but the wind is just nasty. It ain’t until the tail end of the run that things start lookin’ like they’re worth paddlin’ out for.
The standout window is the morning of Friday, September 4th. That’s the one to circle. We’ve got clean, glassy conditions, a 6 ft swell from the ESE with a period of 8 seconds, and the combined energy is moderate at 905. It ain’t a monster, but the wind is gonna be dead still, makin’ for some silky, clean faces. That’s the best wave quality on offer. The water is sittin’ at about 84°, which is a touch warmer than usual for this time of year, so it’s comfortable.
The other real moment of interest is the morning of Wednesday, September 9th. That’s a long way out, so treat it as a promise with a side of caution, but it looks excellent. We’re talkin’ a 10 ft swell from the east, period of 9 seconds, and glassy conditions. The combined energy is strong at 2710. That’s a lot of power, and it’s definitely for experienced surfers only. The wind is dead calm, so it’s gonna be a clean, heavy day. For a reef break like Tainohama, that’s the kind of day you remember.
Before that, there’s a glimmer on the morning of Friday, August 28th. The swell is small, only 4 ft from the SSW, but the wind turns glassy from the NE. The combined energy is weak at 407, so it’s more of a longboard or fish session, but it’ll be clean. The rest of the first week is plagued by cross-onshore winds and choppy conditions, with a big spike in energy on the 2nd and 3rd of September that’s ruined by howlin’ onshore winds.
The second week has a few more marginal calls. The morning of Sunday, September 6th has a solid 7 ft ESE swell with light cross-onshore winds, and the morning of Monday, September 7th has a similar 7 ft swell with a clean-ish onshore wind. The energy is moderate to strong, but the wind direction holds it back from bein’ a true standout. The crowds at Tainohama can be an issue sometimes, so on those better days, you’ll wanna be early.
The gap between the 28th of August and the 4th of September is a long, frustrating stretch of poor surf and bad wind. Hang in there. The 4th and the 9th are the payoffs.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Fri afternoon. Warm (max 31°C on Thu morning, min 26°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 32mm), heaviest during Sat afternoon. Warm (max 30°C on Sun morning, min 25°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | ||||||||||||||
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) | SSE 12 | S 11 | S 11 | SSW 11 | SSW 10 | S 10 | S 9 | SSW 8 | S 8 | SSW 8 | S 8 | SSW 7 | SSW 7 | SW 5 | SE 10 | S 8 | SSE 10 | SSE 10 | SSE 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 1961 | 1006 | 565 | 308 | 378 | 279 | 169 | 119 | 181 | 155 | 90 | 125 | 73 | 74 | 31 | 55 | 177 | 163 | 669 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | on | off | glassy | cross-on | cross-off | glassy | cross-on | cross-on | on | on | cross-on |
High Tide | 4:23AM1.82m | 5:43PM1.86m | 5:06AM1.93m | 6:07PM1.91m | 5:46AM2.00m | 6:31PM1.94m | 6:23AM2.03m | 6:55PM1.95m | 7:00AM2.02m | 7:18PM1.94m | 7:38AM1.95m | 7:42PM1.92m | |||||||
Low Tide | 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 | 1:12PM0.47m | 1:26AM0.48m | 1:41PM0.60m | 2:00AM0.46m | ||||||
 |  |  |  | |  | |  | |  | | | | | | | | | | |
 | — | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — | 5:31 | — | — | 5:33 | — | — | 5:33 | — | — |
 | 6:37 | — | 6:36 | — | — | 6:35 | — | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — | — | 6:29 | — |
mm | — | — | — | — | — | — | — | 1 | 4 | 9 | 1 | 7 | 9 | 2 | 3 | 1 | — | — | 15 |
Temp °C | 27 | 30 | 30 | 27 | 31 | 31 | 27 | 29 | 29 | 26 | 28 | 29 | 27 | 30 | 29 | 27 | 29 | 29 | 26 |
Feels °C | 31 | 32 | 31 | 30 | 32 | 33 | 30 | 34 | 34 | 31 | 34 | 34 | 32 | 34 | 33 | 31 | 31 | 31 | 29 |
Swell 1 Height (m) Direction Period (s) | SSE 12 | S 11 | S 11 | SSW 11 | SSE 8 | SSW 9 | S 9 | SSE 8 | E 11 | S 8 | S 8 | ESE 9 | SE 11 | SSW 6 | S 7 | SE 10 | SSE 10 | SSE 10 | SSE 12 |
| kJ | 1961 | 1006 | 565 | 308 | 184 | 75 | 169 | 76 | 9 | 89 | 90 | 17 | 19 | 43 | 16 | 17 | 177 | 163 | 669 |
Swell 2 Height (m) Direction Period (s) | E 13 | E 13 | SSE 9 | SSE 9 | SSW 10 | E 11 | SW 9 | SE 10 | SSE 10 | SSE 9 | SE 10 | SE 13 | ESE 9 | SE 10 | SE 10 | S 12 | SW 10 | S 13 | SSW 9 |
| kJ | 32 | 30 | 216 | 181 | 154 | 10 | 39 | 16 | 10 | 8 | 14 | 7 | 8 | 17 | 26 | 11 | 23 | 81 | 7 |
Swell 3 Height (m) Direction Period (s) | — | SE 15 | E 13 | E 12 | SSE 11 | SE 16 | SSW 8 | E 11 | ESE 10 | ESE 8 | E 10 | SE 9 | SSE 9 | SSW 8 | SW 10 | SW 11 | S 15 | SW 9 | E 13 |
| kJ | — | 8 | 29 | 25 | 25 | 10 | 21 | 9 | 9 | 7 | 7 | 3 | 8 | 12 | 4 | 5 | 38 | 21 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SSW 10 | S 10 | SW 8 | SSW 8 | S 8 | SSW 8 | SW 5 | SSW 7 | SSW 7 | SW 5 | SSW 5 | S 8 | SSW 4 | — | SE 3 |
| kJ | — | — | — | — | 378 | 279 | 166 | 119 | 181 | 155 | 34 | 125 | 73 | 74 | 31 | 55 | 10 | — | 6 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 3 | 3 | 3 | 51 | 3 | 21 | 32 | 3 | 0 | 3 | 0 | 0 | 0 | 2 | 0 | 36 | 18 | 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.
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