Surf Forecasts:
Tainohama surf forecast from 1 Sep 2026:
- Best quality surf: Sunday 6 Sep, 3AM (local time) - 8ft (2.4m), 9s period, ESE swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 12AM (local time) - 18ft (5.5m), 11s period, ESE swell with 7,286 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 3AM (local time) - 3.5ft (1.0m), 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 Wednesday (Sep 02) at 3AM. The primary swell is predicted to be 1.0m and 8s period with a secondary swell of 0.5m and 11s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Tainohama in the next 16 days are 5.5m 11s and forecast to arrive on Tuesday (Sep 08) at 12AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Monday (Sep 07) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Wed 2nd Sep) | 3.5ft (1.0m) 8s |
| Best Surf | 3AM (Sun 6th Sep) | 8ft (2.4m) 9s |
| Most Powerful | 12AM (Tue 8th Sep) | 18ft (5.5m) 11s |
Table - best surf conditions forecast for Tainohama over the next 16 days.
The Lowdown
Alright, this is Rusty, checking in with the outlook for Tainohama.
We’ve got a bit of a wait for the good stuff this week, but hang in there. The water temp here is running about average for this time of year, nothing wild.
Wednesday’s a write-off with that risk of thunderstorms and onshore wind. The swell is a weak 4ft from the south at a short 8 seconds (energy at 260), so it’s messy, don’t even bother.
Thursday morning is glassy, calm, flat. That’s a teaser for the afternoon. By Thursday afternoon the wind swings to a clean offshore from the north, and we get a pulse of 4ft south-southeast swell at 10 seconds. It’s not huge, but it’ll be clean and fun. The energy is moderate (365). This is your first real chance for a decent session.
Friday sees the swell building Friday morning to 6ft from the south, period at 9 seconds. That’s a solid chest-to-head-high and getting a bit much for beginners. The wind is cross-offshore, so it’ll be clean. The energy is ramping up (620). Friday afternoon drops slightly to 5ft, still clean.
Saturday the swell shifts direction to the east-southeast but the wind howls. Saturday morning is 6ft but with a strong 40 km/h cross-off wind. That’s a mess. Saturday afternoon is 6ft at 8 seconds (energy at 878). The swell is there, but the wind is too strong for good surf. This setup looks more interesting for kite surfing than paddle surfing.
Sunday is where things get serious. Sunday morning we see a jump to 12ft from the east, period at 9 seconds. This is big, solidly in the expert-only zone. The combined energy is very strong (3167). It’s big, but the wind is cross-offshore, keeping it clean. Sunday afternoon drops to a still-big 8ft from the east-southeast at 10 seconds.
The standout, and I mean the standout of the whole window, is Monday the 7th of September. Monday afternoon delivers a 13ft swell from the southeast with a very long 12-second period. That is a proper groundswell. The energy is massive at 7032. Conditions are “fresh offshore and clean”. This is a big, powerful swell, so it’s strictly for experts. This reef is exposed to the south, and with that long period, it’ll wrap in perfectly.
Tuesday the 8th stays big, with a 15ft southeast swell in the morning, but it’s a touch less clean than Monday. Energy is still very strong (4231). Wednesday the 9th is still a solid 8ft, and the afternoon sees a clean offshore wind again. Thursday the 10th and Friday the 11th are messy with onshore winds.
Then we get another little window. Saturday the 12th morning shows an “excellent” call for experienced surfers with a clean 7ft southeast swell, long 11-second period, and light cross-off wind. The energy is strong (1274). Saturday afternoon is glassy with a 6ft southeast swell.
From Sunday the 13th onwards, things turn ugly. The swell is still solid but the onshore winds return, and by the 14th and 15th we’ve got strong onshore winds and heavy rain. The 15th has a 13ft southeast swell at 14 seconds, but it’s blown out. The 16th is still onshore.
Finally, on Thursday the 17th, we get a glassy morning with a clean, small 3ft south swell at a lovely long 12-second period. Energy is moderate (623). It’s a beautiful little window for a clean-up set on a longboard after all that chaos.
But honestly, if you only pick one day, it’s Monday the 7th. It’s the biggest, deepest, most powerful swell of the run with perfect offshore wind. That's the one to dream on.
Rusty.
Short Range ForecastHeavy rain (total 172mm), heaviest during Thu night. Warm (max 29°C on Wed morning, min 22°C on Thu afternoon). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 279mm), heaviest during Sun morning. Warm (max 25°C on Mon afternoon, min 20°C on Fri night). Winds decreasing (fresh winds from the NNE on Sat morning, light winds from the NNE by Sat night). | ||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | ||||||||||||||
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 8 | S 8 | S 9 | SSE 8 | S 8 | SSE 10 | S 10 | S 9 | S 9 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | E 9 | ESE 10 | ESE 10 | ESE 9 | SE 12 | ESE 11 |
Wave Graph | |||||||||||||||||||
105 | 177 | 199 | 154 | 140 | 318 | 596 | 577 | 430 | 383 | 344 | 471 | 660 | 2073 | 1394 | 1493 | 1319 | 4927 | 7286 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross-on | glassy | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off |
High Tide | 9:01AM1.70m | 8:33PM1.82m | 9:56AM1.55m | 9:03PM1.74m | 11:25AM1.42m | 9:41PM1.64m | 2:23PM1.42m | 10:58PM1.53m | 3:47PM1.54m | 1:25AM1.51m | 4:20PM1.66m | 2:58AM1.62m | |||||||
Low Tide | 2:38AM0.48m | 2:37PM0.93m | 3:22AM0.54m | 3:06PM1.09m | 4:19AM0.62m | 3:42PM1.25m | 5:46AM0.69m | 5:33PM1.39m | 7:38AM0.67m | 8:48PM1.34m | 9:00AM0.57m | 9:47PM1.19m | |||||||
— | 5:35 | — | — | 5:35 | — | — | 5:35 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | |
6:28 | — | 6:27 | — | — | 6:25 | — | — | 6:23 | — | — | 6:22 | — | — | 6:21 | — | — | 6:20 | — | |
mm | 1 | 1 | — | 11 | 10 | 22 | 88 | 5 | 34 | 124 | 3 | 6 | 21 | 80 | 27 | 7 | 9 | 2 | — |
Temp °C | 26 | 29 | 29 | 26 | 26 | 23 | 23 | 24 | 23 | 23 | 21 | 22 | 23 | 22 | 23 | 23 | 24 | 25 | 26 |
Feels °C | 30 | 32 | 31 | 30 | 31 | 25 | 24 | 26 | 24 | 23 | 17 | 21 | 24 | 23 | 24 | 24 | 23 | 24 | 24 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 8 | S 9 | SSE 8 | S 8 | SSE 10 | S 10 | S 9 | S 9 | S 9 | ESE 8 | SSW 10 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | SSE 11 | SE 12 | — |
105 | 177 | 199 | 154 | 140 | 318 | 596 | 577 | 430 | 146 | 344 | 407 | 660 | 1039 | 1394 | 1493 | 700 | 4927 | — | |
Swell 2 Height (m) Direction Period (s) | E 12 | E 11 | E 11 | ESE 11 | ESE 5 | ESE 10 | ESE 6 | ESE 7 | E 7 | SSW 9 | SSW 10 | — | SSW 9 | SSW 8 | SSW 8 | SSW 9 | SSE 13 | — | — |
70 | 61 | 58 | 37 | 14 | 33 | 27 | 36 | 38 | 73 | 154 | — | 143 | 55 | 35 | 16 | 440 | — | — | |
Swell 3 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 11 | SE 11 | ESE 10 | SE 10 | ESE 10 | E 9 | E 15 | E 15 | S 8 | — | — | — | — | — | — | — | — |
15 | 17 | 18 | 18 | 33 | 14 | 18 | 7 | 4 | 4 | 49 | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | E 6 | E 6 | E 5 | E 4 | — | NNE 3 | NNE 4 | NNE 4 | ENE 7 | ESE 8 | NNE 4 | ESE 8 | NNE 3 | E 9 | — | — | ESE 9 | E 9 | ESE 11 |
11 | 5 | 8 | 10 | — | 2 | 34 | 26 | 86 | 383 | 8 | 471 | 5 | 2073 | — | — | 1319 | 2105 | 7286 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 3 | 64 | 3 | 3 | 0 | 0 | 0 | 21 | 64 | 482 | 77 | 77 | 0 | 64 | 64 | 21 | 64 | 64 | 22 |
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.











