Surf Forecasts:
Tainohama surf forecast from 24 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, 9AM (local time) - 10ft (3.0m), 14s period, SSE swell with 3,875 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 14s and forecast to arrive on Tuesday (Aug 25) at 9AM. 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 | 9AM (Tue 25th Aug) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Tainohama over the next 16 days.
The Lowdown
Alright, let’s talk Tainohama. This is a solid, advanced reef break that’s been seeing some serious size lately. Over the last few days, we’ve had a big pulse of swell roll through with a lot of energy – combined swell energy in the thousands (4834) – pushing around 10ft from the SSE. Problem is the wind has been cross-onshore, chopping things up, so the quality has been marginal. Not the kind of session you write home about, but there’s been plenty of water moving.
Heading into Thursday the 27th, the swell drops right off. Thursday morning is down to 4ft from the SSW, combined energy of just 487, and the wind stays cross-onshore with a gentle breeze. Conditions are poor, and by the afternoon it’s even worse with the wind picking up to 15 mph. Not worth paddling out. Friday the 28th is where things start to look interesting. The swell is still small, 4ft from the S, period down around 8 seconds, but the wind goes glassy in the morning – completely calm, just a slight air. That’s a major positive. The combined energy is still low at 378, but clean waves on a reef are always worth a look. The water temperature is about average for the time of year, so no surprises there.
Saturday the 29th keeps that glassy theme going. Morning sees 3ft from the S with no wind at all – dead calm. Combined energy is only 104, so it’s weak, but it’s clean. By the afternoon, a bit more size at 4ft from the SSW and still glassy conditions, so that’s the pick of the weekend. Crowds can be an issue here sometimes, but on a smaller day like this, you might get it more to yourself. Sunday the 30th is a drop-off again – 2ft in the morning, glassy but tiny, and by the afternoon the wind swings onshore and the swell fades. From Monday the 31st through to the middle of the week, it’s flat or blown out.
Now, here’s where things get interesting again. On Sunday the 6th of September, we’ve got a big new swell on the way. The morning shows 12ft from the SSE, period stretching out to 14 seconds, combined energy of 5130 – that’s a serious groundswell. But the wind is cross-onshore, light, so it’s not perfect. The real standout comes on Monday the 7th of September in the afternoon. The swell drops to 8ft from the SSE, period still solid at 11 seconds, but the wind swings to NNW offshore at 9 mph. That’s the best forecast of the whole window – offshore wind, clean lines, plenty of energy (1818). This is excellent for experienced surfers, but anyone below that level should sit this one out; 8ft on a reef is serious. Tuesday the 8th sees the wind go cross-offshore, but the swell drops to 5ft and then 3ft, and the energy fades. By Wednesday the 9th, it’s back to small and ordinary.
So if you’re looking for the best windows, Friday the 28th and Saturday the 29th offer clean, small waves for the patient surfer, but the absolute standout is Monday afternoon on the 7th of September. That’s the one to circle on the calendar. Offshore wind, solid 8ft SSE swell, and that reef will be handling it beautifully.
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 | 3 | 32 | 3 | 3 | 51 | 3 | 3 | 32 | 3 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 3 | 21 | 3 | 32 |
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.











