Surf Forecasts:
Tainohama surf forecast from 8 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 3PM (local time) - 6ft (1.8m), 8s period, SSE swell with offshore winds.
- Most powerful swell: Wednesday 9 Sep, 9AM (local time) - 11ft (3.5m), 9s period, S swell with 1,797 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 3PM (local time) - 6ft (1.8m), 8s period with SSE 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 Wednesday (Sep 09) at 3PM. The primary swell is predicted to be 1.8m and 8s period with a secondary swell of 0.1m and 18s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Tainohama in the next 16 days are 3.5m 9s and forecast to arrive on Wednesday (Sep 09) at 9AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Wednesday (Sep 09) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Wed 9th Sep) | 6ft (1.8m) 8s |
| Best Surf | 3PM (Wed 9th Sep) | 6ft (1.8m) 8s |
| Most Powerful | 9AM (Wed 9th Sep) | 11ft (3.5m) 9s |
Table - best surf conditions forecast for Tainohama over the next 16 days.
The Lowdown
Alright, let's get down to it. Rusty here. Looking at the long-range for Tainohama, and I'll tell you what, we're in for a bit of a test of patience before things get properly interesting.
For the first week or so, the surf is pretty much the definition of "ordinary." We're looking at a few small pulses, but nothing that's going to get the heart rate up. You'll see some waves in the knee to waist-high range, and while the winds are often light or offshore, there’s just no push behind them. It’s the kind of stuff that makes you question why you brought your board down to the beach. There are a few days with a chance of thunderstorms, so keep one eye on the sky.
Then, around the 20th, things finally wake up. A fresh 2.3m swell from the southeast should roll in, and the forecast is calling for glassy conditions that morning. That’s your first real window of opportunity. The water’s going to be clean and the waves will have some size to them. That's a morning session worth setting an alarm for. It's still a short-period swell, so it won't have the punch of a groundswell, but it's solid.
From there, we get a bit of a lull again before the main event. The outlook for the tail end of the forecast period is what’s really got my attention. The charts are showing a serious, long-period groundswell arriving around the 23rd. We’re talking head-high to nearly double-overhead waves, possibly up to 3.5m, with a very long 16-second period. If that holds, the afternoon of the 23rd could be an absolute classic for the experts. This is a very powerful swell, with a combined energy reading of 5616, so it’ll have real muscle behind it.
It’s a long way out, so treat that with a bit of caution, but it's the one to watch. The waves will be powerful and clean. If you’re not an expert, this is the time to find something else to do, because it’s going to be a handful.
So, keep your expectations low for the next week, enjoy a decent, clean session on the 20th, and keep everything crossed for a spectacular reward on the 23rd. Stay stoked.
Rusty, out.
Short Range ForecastHeavy rain (total 58mm), heaviest during Wed morning. Warm (max 27°C on Tue night, min 21°C on Wed night). Winds increasing (calm on Tue night, fresh winds from the NNW by Wed morning). | Days 5-7 Weather SummaryHeavy rain (total 42mm), heaviest during Mon afternoon. Warm (max 28°C on Sun afternoon, min 24°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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 10 | S 9 | SSE 8 | SSE 8 | SSE 8 | SE 8 | SSE 8 | SE 8 | SSE 8 | SSE 7 | S 7 | SE 10 | E 14 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | SE 9 | ESE 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 1751 | 1797 | 479 | 173 | 140 | 140 | 120 | 136 | 123 | 62 | 35 | 30 | 35 | 46 | 73 | 197 | 188 | 216 | 368 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | off | off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | glassy | glassy | cross-on | on | on | on | on | on |
High Tide | 3:56AM1.76m | 5:11PM1.83m | 4:42AM1.88m | 5:35PM1.88m | 5:22AM1.98m | 5:58PM1.92m | 5:59AM2.03m | 6:21PM1.95m | 6:35AM2.04m | 6:45PM1.95m | 7:12AM1.99m | 7:08PM1.94m | |||||||
Low Tide | 10:24PM1.02m | 10:36AM0.40m | 10:55PM0.86m | 11:11AM0.36m | 11:24PM0.70m | 11:44AM0.36m | 11:54PM0.56m | 12:14PM0.41m | 00:24AM0.46m | 12:44PM0.50m | 00:55AM0.39m | 1:12PM0.61m | 1:28AM0.36m | ||||||
 |  |  |  |  |  | | | | | | | | | |  | |  |  | |
 | — | 5:39 | — | — | 5:39 | — | — | 5:41 | — | — | 5:41 | — | — | 5:41 | — | — | 5:43 | — | — |
 | 6:19 | — | 6:16 | — | — | 6:15 | — | — | 6:15 | — | — | 6:13 | — | — | 6:12 | — | — | 6:10 | — |
mm | 21 | 19 | 13 | — | — | 3 | 2 | — | — | — | 2 | 3 | 8 | 7 | 3 | 6 | 3 | 10 | 45 |
Temp °C | 27 | 27 | 23 | 22 | 23 | 24 | 23 | 26 | 25 | 24 | 27 | 27 | 25 | 27 | 28 | 26 | 26 | 25 | 25 |
Feels °C | 33 | 30 | 23 | 19 | 22 | 24 | 26 | 30 | 29 | 28 | 32 | 32 | 29 | 30 | 30 | 30 | 29 | 29 | 27 |
Swell 1 Height (m) Direction Period (s) | SSE 10 | S 9 | SSE 8 | SSE 8 | SSE 8 | SE 8 | SSE 8 | SE 8 | SSE 8 | SSE 7 | S 7 | ESE 6 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | SE 9 | ESE 9 |
| kJ | 1338 | 1345 | 479 | 173 | 140 | 140 | 120 | 136 | 123 | 62 | 35 | 30 | 35 | 46 | 73 | 197 | 188 | 216 | 264 |
Swell 2 Height (m) Direction Period (s) | — | E 18 | E 18 | E 16 | E 16 | E 15 | E 15 | E 15 | E 14 | SE 10 | ESE 5 | S 7 | S 7 | ESE 4 | E 13 | S 7 | E 13 | E 12 | S 7 |
| kJ | — | 6 | 6 | 5 | 5 | 4 | 17 | 17 | 15 | 24 | 6 | 23 | 15 | 6 | 31 | 3 | 13 | 12 | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | — | E 16 | — | E 18 | E 9 | E 14 | E 14 | E 14 | SE 10 | SE 10 | E 14 | S 7 | S 7 | E 13 | S 7 | S 7 | S 7 |
| kJ | — | — | — | 21 | — | 6 | 6 | 65 | 15 | 36 | 24 | 25 | 35 | 14 | 8 | 13 | 4 | 4 | 4 |
Wind waves Height (m) Direction Period (s) | SSE 10 | S 9 | NNE 3 | NNE 6 | NNE 5 | NE 4 | NE 3 | NE 3 | NE 3 | NE 3 | NE 3 | NNE 3 | ESE 5 | — | SE 4 | — | — | — | ESE 9 |
| kJ | 1751 | 1797 | 5 | 93 | 42 | 10 | 1 | 1 | 2 | 1 | 2 | 1 | 23 | — | 8 | — | — | — | 368 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 3 | 21 | 0 | 64 | 64 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 64 | 64 | 64 | 3 | 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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