Surf Forecasts:
Tainohama surf forecast from 25 Aug 2026:
- Best quality surf: Friday 28 Aug, 6AM (local time) - 5ft (1.5m), 8s period, S swell with offshore winds.
- Most powerful swell: Tuesday 25 Aug, 6PM (local time) - 10ft (3.0m), 13s period, SSE swell with 2,986 kJ wave energy.
- Next surfable swell (1★+): Friday 28 Aug, 6AM (local time) - 5ft (1.5m), 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 1.5m and 8s period with a secondary swell of 1.4m and 8s. Another secondary swell of 0.2m and 11s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Tainohama in the next 16 days are 3.0m 13s and forecast to arrive on Tuesday (Aug 25) at 6PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Fri 28th Aug) | 5ft (1.5m) 8s |
| Best Surf | 6AM (Fri 28th Aug) | 5ft (1.5m) 8s |
| Most Powerful | 6PM (Tue 25th Aug) | 10ft (3.0m) 13s |
Table - best surf conditions forecast for Tainohama over the next 16 days.
The Lowdown
Alright, you salty dogs, let's talk Tainohama. It's a bit of a mixed bag over the next couple of weeks.
Right now, the water's a balmy 84°, which is a touch warmer than usual for this time of year.
So, starting Tuesday the 25th, we've got a solid 10-foot swell from the SSE, but it's bumpy. The wind is cross-on with a light breeze, giving it a messy look. The combined energy is a massive 4834, which is powerful, but it's not clean. This one is strictly for the advanced crew. That swell drops to 8 feet by the afternoon with more wind, making it choppy.
Wednesday the 26th sees the swell dropping to 6 feet, still cross-on and choppy. Thursday is a write-off with onshore winds and lumpy conditions.
Here's a glimmer. Friday morning the 28th. The swell drops to 4 feet from the south with a short period of 8 seconds, but the wind goes glassy. It's dead calm. That's a major positive for a clean session, even if the waves are small. The energy is a weak 224, so it's not punchy, but it'll be the cleanest we've seen. That glassy window continues into Saturday morning the 29th with 2-foot waves and calm conditions, though the energy is a tiny 81.
After that, we hit a quiet patch. From Sunday the 30th through Saturday the 5th of September, the waves are small, mostly under 3 feet, and a lot of it is blown out by onshore winds. There's a short bump on Tuesday the 1st of September with a 5-foot SE swell (period 13s, energy 709), but it's cross-on and choppy.
The real standout, the only true standout, comes at the very end. Look at Sunday the 6th of September. We get a 3-foot SW groundswell with a very long period of 12 seconds. The energy is still low at 333, but look at the wind – a light breeze from the NNE creating a cross-offshore flow. That's clean. Because Tainohama is a reef break, that long-period groundswell will wrap in nicely. It won't be big, but it will be clean and lined up.
Then on Monday the 7th and Tuesday the 8th of September, we see more offshore and clean conditions with 3 to 5-foot swell. The wind is offshore from the NNW and N, which is perfect. The shorter period on Tuesday (6 seconds) means it'll be softer and more playful. The energy is still low to moderate (218 to 305), but for clean, groomed waves, those are your best bets.
To call it straight: The best windows are Friday morning the 28th of August for a tiny, glassy session, and then the early week of September – specifically Sunday the 6th and Monday the 7th – for the cleanest, most lined-up conditions. Don't expect any massive, perfect swells; it's about waiting for the clean moments on smaller waves.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Thu night. Warm (max 30°C on Wed morning, min 26°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 18mm), heaviest on Sat afternoon. Warm (max 30°C on Sat afternoon, min 25°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | |||||||||||||||
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) | SSE 14 | SSE 13 | SSE 12 | S 12 | S 12 | SSW 11 | SSW 10 | SSE 10 | S 9 | S 8 | S 8 | SSE 7 | SSW 8 | SSW 8 | SSW 8 | S 8 | S 8 | SE 10 | SSW 8 | ESE 5 | ESE 5 |
Wave Graph | |||||||||||||||||||||
3875 | 2005 | 1961 | 1048 | 711 | 353 | 190 | 282 | 240 | 191 | 153 | 49 | 48 | 81 | 58 | 42 | 44 | 38 | 19 | 34 | 31 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | glassy | glassy | glassy | glassy | cross-on | cross-off | glassy | cross-on | cross | cross-on | on | on |
High Tide | 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 | 7:00AM2.02m | 7:18PM1.94m | 7:38AM1.95m | 7:42PM1.92m | ||||||||
Low Tide | 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 | 1:12PM0.47m | 1:26AM0.48m | 1:41PM0.60m | 2:00AM0.46m | |||||||
5:28 | — | — | 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 | 1 | — | — | — | 2 | 1 | 1 | 2 | 1 | 4 | 2 | — | 3 | 4 | — | — | 6 |
Temp °C | 29 | 29 | 27 | 30 | 29 | 27 | 30 | 30 | 27 | 28 | 27 | 26 | 29 | 30 | 27 | 30 | 30 | 27 | 29 | 29 | 27 |
Feels °C | 30 | 31 | 32 | 32 | 32 | 31 | 31 | 31 | 31 | 34 | 33 | 31 | 33 | 34 | 32 | 34 | 35 | 32 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | SSE 14 | SSE 13 | SSE 12 | S 12 | S 12 | SSW 11 | SSE 8 | SSW 10 | S 9 | S 8 | S 8 | SSE 7 | SSW 8 | ESE 9 | SSW 8 | S 8 | S 8 | ESE 4 | SSW 8 | SE 10 | ESE 5 |
3875 | 2005 | 1961 | 1048 | 711 | 353 | 157 | 117 | 240 | 191 | 153 | 49 | 48 | 8 | 58 | 42 | 44 | 11 | 19 | 15 | 31 | |
Swell 2 Height (m) Direction Period (s) | E 15 | S 15 | E 13 | SE 10 | SSE 9 | SE 9 | SSW 10 | E 11 | SW 9 | SE 10 | SE 10 | SSW 8 | SSE 7 | SSE 9 | SE 11 | SE 10 | SE 10 | S 8 | SE 10 | S 7 | SE 9 |
17 | 1310 | 32 | 217 | 216 | 178 | 190 | 10 | 21 | 24 | 15 | 26 | 19 | 8 | 19 | 17 | 36 | 29 | 16 | 10 | 31 | |
Swell 3 Height (m) Direction Period (s) | S 18 | E 14 | — | E 13 | E 13 | E 12 | SSE 11 | SE 16 | E 11 | E 11 | WSW 12 | SSE 9 | SE 10 | SE 13 | ESE 9 | ESE 10 | SW 10 | SE 10 | SSW 10 | SSW 9 | S 9 |
942 | 16 | — | 30 | 29 | 25 | 24 | 10 | 9 | 9 | 14 | 8 | 14 | 7 | 8 | 9 | 4 | 38 | 9 | 16 | 27 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | SSE 10 | SSW 8 | — | — | — | — | SSW 8 | SW 5 | — | — | SE 4 | ESE 4 | ESE 5 | — |
— | — | — | — | — | — | — | 282 | 38 | — | — | — | — | 81 | 25 | — | — | 18 | 12 | 34 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 3 | 32 | 3 | 32 | 51 | 3 | 3 | 32 | 3 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 3 | 18 | 3 | 497 | 64 |
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.











