
Surf Forecasts:
Tainohama surf forecast from 11 Sep 2026:
- Best quality surf: Friday 18 Sep, 9AM (local time) - 3.5ft (1.0m), 18s period, SE swell with cross-offshore winds.
- Most powerful swell: Friday 18 Sep, 3PM (local time) - 5.5ft (1.7m), 19s period, SE swell with 1,967 kJ wave energy.
- Next surfable swell (1★+): Friday 11 Sep, 6PM (local time) - 4ft (1.2m), 7s 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 Friday (Sep 11) at 6PM. The primary swell is predicted to be 1.2m and 7s period with a secondary swell of 0.3m and 10s. 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 1.7m 19s and forecast to arrive on Friday (Sep 18) at 3PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 4s period and expected on Friday (Sep 11) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Fri 11th Sep) | 4ft (1.2m) 7s |
| Best Surf | 9AM (Fri 18th Sep) | 3.5ft (1.0m) 18s |
| Most Powerful | 3PM (Fri 18th Sep) | 5.5ft (1.7m) 19s |
Table - best surf conditions forecast for Tainohama over the next 16 days.
The Lowdown
Alright, let's get into it. The next couple weeks have got some serious firepower lining up, but you gotta be patient and pick your moments. The start is pretty average, real dribbly, but there’s a proper pulse of energy coming through the end of next week that’s gonna get the heart rate up. Water temp is sitting at 82°F, which is just a touch warmer than normal for this time of year, so you can get away with boardshorts and a rashie.
For the next few days, it’s pretty quiet and mixed. Friday morning at Tainohama you’ve got a small 3ft wave with a short 7-second period, and a cross-off breeze keeping it clean but it’s nothing to get excited about. Saturday is smaller again, with the morning seeing 2ft and the glassy afternoon dropping to 2ft. The energy is weak, around 101 and 91 on the combined scale. There are a few passing storms around, so keep an eye on the sky more than the ocean.
Sunday and Monday are a write-off for a surf. The wind goes onshore and it’s messy with a lack of power. The swell is bouncing around the 2ft to 3ft mark but the conditions are poor, which makes it a struggle. This is where we hit a bit of a lull.
Tuesday the 15th is the first real sign of life as the wind drops out and it goes glassy. We’ve got 4ft of clean, short-period swell and the energy is starting to build up to 228. It’s not big, but it’s clean and surfable, a bit of a reset. Wednesday and Thursday offer similar small waves, but they’re not really doing much.
Now, here’s where it gets interesting. Friday the 18th, the long-period groundswell starts to fill in. The morning shows 3ft at a huge 18-second period, and the energy reading jumps to 1112. This is proper stuff. The afternoon bumps up to 6ft with the period at 19 seconds, but the wind goes onshore, making it a bit of a diamond in the rough. This is the start of the pulse, a sign of what’s coming.
Saturday the 19th is the first true standout. The swell has kicked up to 15ft in the morning, with a solid 15-second period and moderate energy of 10655. But the wind is a bit cross-onshore. The afternoon is the pick: 13ft, glassy conditions, and energy still at 7063. This is an exceptional day on the cards for experienced surfers.
Sunday the 20th brings a big, raw swell with S/SSE direction, around 10-12ft, but the SE wind makes it a bit lumpy. The energy remains high, but it’s not as clean as Saturday. Monday the 21st is another huge standout. The swell jumps back up to 16ft with a 15-second period, and the wind turns offshore from the N. This has got “exceptional” written all over it, with energy readings over 10600. This is the one to circle on the calendar.
Tuesday the 22nd, we get even bigger, with 21ft forecast in the morning, but it’s just too much for this break. The energy is massive at 11535, but the comment says it’s predicted to be too big. The afternoon backs off to 10ft and gets glassy, which would be excellent if the conditions hold.
After that, the swell drops off fast. Wednesday the 23rd is back to small, weak waves, and by Thursday the 24th, the wind is howling from the SSW at 37 mph, blowing everything out and dropping the swell to a miserable 1.0ft. The combined energy falls to 28, which is about as weak as it gets.
Looking further out, Friday the 25th shows a new swell starting to build with a 16-second period, coming in at 8ft in the morning and 8ft in the afternoon with clean offshore winds. Energy is back in the 2700-3700 range. Saturday the 26th looks even better, with 12ft and a 16-second period, but the afternoon wind swings onshore.
So, the real standouts are Saturday the 19th and Monday the 21st. Huge, clean, powerful groundswell with offshore winds. That’s the good stuff.
Rusty.
Short Range ForecastModerate rain (total 14mm), heaviest on Sun night. Warm (max 28°C on Sun afternoon, min 24°C on Fri morning). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 31mm), heaviest during Wed morning. Warm (max 28°C on Mon morning, min 23°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | |||||||||||||||
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 7 | SSE 7 | S 7 | S 7 | S 7 | E 14 | SE 9 | SE 9 | SE 8 | SE 8 | ESE 9 | SE 9 | SE 9 | SE 9 | SE 9 | ESE 9 | ESE 9 | SE 9 | SE 9 | SE 8 | ESE 6 |
Wave Graph | |||||||||||||||||||||
114 | 167 | 127 | 45 | 34 | 35 | 40 | 81 | 180 | 135 | 135 | 170 | 216 | 186 | 225 | 135 | 132 | 145 | 110 | 67 | 126 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | cross-off | glassy | cross-on | on | on | on | on | on | cross | glassy | glassy | glassy | cross-off | glassy | glassy | glassy | glassy | glassy |
High Tide | 5:58PM1.92m | 5:59AM2.03m | 6:21PM1.95m | 6:35AM2.04m | 6:45PM1.95m | 7:12AM1.99m | 7:08PM1.94m | 7:50AM1.90m | 7:32PM1.91m | 8:31AM1.77m | 7:58PM1.85m | 9:19AM1.62m | 8:25PM1.77m | ||||||||
Low Tide | 11:44AM0.36m | 11:54PM0.56m | 12:14PM0.41m | 00:24AM0.46m | 12:44PM0.50m | 00:55AM0.39m | 1:12PM0.61m | 1:28AM0.36m | 1:40PM0.75m | 2:04AM0.38m | 2:07PM0.90m | 2:43AM0.44m | 2:36PM1.06m | ||||||||
5:41 | — | — | 5:41 | — | — | 5:41 | — | — | 5:43 | — | — | 5:43 | — | — | 5:45 | — | — | 5:45 | — | — | |
— | 6:15 | — | — | 6:13 | — | — | 6:12 | — | — | 6:10 | — | — | 6:08 | — | — | 6:07 | — | — | 6:06 | — | |
mm | 1 | 1 | — | — | 1 | 4 | 2 | — | 5 | 1 | — | 4 | 3 | 2 | 2 | 4 | 8 | 7 | — | 1 | 1 |
Temp °C | 27 | 27 | 25 | 26 | 26 | 25 | 27 | 28 | 25 | 28 | 27 | 26 | 24 | 25 | 24 | 26 | 26 | 24 | 26 | 26 | 25 |
Feels °C | 29 | 28 | 28 | 29 | 30 | 30 | 31 | 31 | 29 | 30 | 29 | 30 | 29 | 30 | 28 | 30 | 30 | 29 | 30 | 31 | 29 |
Swell 1 Height (m) Direction Period (s) | SSE 7 | SSE 7 | S 7 | S 7 | S 7 | S 7 | SE 9 | SE 9 | SE 8 | SE 8 | ESE 9 | SE 9 | SE 9 | SE 9 | SE 9 | ESE 9 | ESE 9 | SE 9 | SE 9 | SE 8 | SSE 9 |
114 | 167 | 127 | 45 | 34 | 15 | 40 | 81 | 180 | 135 | 135 | 170 | 216 | 186 | 225 | 135 | 132 | 145 | 110 | 67 | 7 | |
Swell 2 Height (m) Direction Period (s) | E 15 | E 14 | ESE 10 | SE 10 | SE 10 | ESE 10 | SE 4 | E 13 | E 13 | E 13 | E 12 | E 12 | E 12 | E 13 | E 13 | S 5 | SSW 5 | E 13 | E 12 | SSE 9 | SE 22 |
17 | 15 | 19 | 24 | 25 | 35 | 3 | 31 | 13 | 13 | 12 | 12 | 11 | 14 | 12 | 5 | 2 | 3 | 3 | 8 | 19 | |
Swell 3 Height (m) Direction Period (s) | SE 11 | E 14 | E 14 | E 13 | E 14 | E 14 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 6 | S 6 | S 7 | E 12 | E 13 | E 13 | S 7 | E 12 | E 12 |
5 | 15 | 36 | 32 | 32 | 35 | 8 | 8 | 4 | 4 | 4 | 1 | 1 | 1 | 1 | 3 | 4 | 3 | 1 | 3 | 3 | |
Wind waves Height (m) Direction Period (s) | NNE 3 | NE 4 | NNE 3 | NE 4 | NE 3 | SE 4 | — | SE 4 | — | — | — | — | — | — | SSE 5 | — | — | — | NNE 2 | NE 3 | ESE 6 |
4 | 8 | 1 | 3 | 2 | 8 | — | 8 | — | — | — | — | — | — | 33 | — | — | — | 1 | 1 | 126 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 21 | 0 | 0 | 0 | 3 | 18 | 32 | 3 | 3 | 32 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Shikoku | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.










