Surf Forecasts:
Tainohama surf forecast from 17 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 3AM (local time) - 10ft (3.0m), 17s period, SE swell with glassy winds.
- Most powerful swell: Tuesday 25 Aug, 9AM (local time) - 11ft (3.5m), 16s period, SE swell with 5,606 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 6AM (local time) - 1.5ft (0.4m), 10s period with SE 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 Thursday (Aug 20) at 6AM. The primary swell is predicted to be 0.5m and 7s period with a secondary swell of 0.4m and 10s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Tainohama in the next 16 days are 3.5m 16s and forecast to arrive on Tuesday (Aug 25) at 9AM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Thu 20th Aug) | 1.5ft (0.4m) 10s |
| Best Surf | 3AM (Tue 25th Aug) | 10ft (3.0m) 17s |
| Most Powerful | 9AM (Tue 25th Aug) | 11ft (3.5m) 16s |
Table - best surf conditions forecast for Tainohama over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about Tainohama. The start is real quiet, so don’t grab your wetsuit yet. The first thing worth mentioning doesn’t show up until Saturday the 22nd, and it’s still pretty mellow.
The water temp is 83°, nothing wild for this time of year.
From Tuesday the 18th through Friday the 21st, it’s flat, windy, and weak. Wave energy is low – between 77 and 196 (weak to moderate). Just leave the board at home.
Saturday morning the 22nd, the wind goes glassy for a minute with a tiny 3ft swell from the SSW. Energy is 155 (weak). It’s surfable but nothing special. Crowds can show up, but it’s not a standout.
Now, Monday the 24th morning – that’s a different story. A clean 6ft SE groundswell with a long 17-second period. Glassy wind. Combined energy hits 2273 (strong energy). This is for advanced surfers on the reef. The direction is off the ideal (S), but with that period and glass, it’s going to be good. That’s a top pick.
From Tuesday the 25th to Friday the 28th, we get big 12ft swells from the SSE to S, periods of 15 to 16 seconds – very long groundswell. Energy is massive, over 6300 some sessions (very strong wave energy). This is expert-only, big surf. Winds are light and clean. Wednesday the 26th and Thursday the 27th mornings are prime. Crowds are possible, but at this size, it might be sparse.
Saturday the 29th gets messy with rain and stronger winds, but the swell holds. After Sunday, it drops back down, and early September looks choppy and poor again.
Bottom line: if you’re experienced, go for Monday the 24th morning for a glassy 6ft groundswell, or Wednesday the 26th and Thursday the 27th mornings for very big, clean, expert-level waves. Those are the standouts.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Tue morning. Warm (max 28°C on Tue morning, min 25°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 29°C on Fri morning, min 25°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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) | SE 11 | SE 5 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | S 9 | S 9 | S 10 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 8 | SE 14 | SE 16 | SE 17 | SE 17 | SE 17 |
Wave Graph  | |||||||||||||||||||||
 kJ | 29 | 36 | 27 | 36 | 26 | 25 | 25 | 35 | 99 | 125 | 148 | 138 | 110 | 110 | 82 | 55 | 51 | 260 | 2167 | 2945 | 5452 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | cross-on | on | on | cross-on | on | on | cross-on | glassy | cross-on | cross-on | on | cross-on | cross | glassy | on | cross-on |
High Tide | 8:45PM1.83m | 9:37AM1.62m | 9:13PM1.77m | 10:45AM1.47m | 9:48PM1.69m | 12:49PM1.39m | 10:41PM1.61m | 3:26PM1.47m | 00:26AM1.55m | 4:19PM1.60m | 2:18AM1.59m | 4:51PM1.71m | |||||||||
Low Tide | 2:40PM0.78m | 3:17AM0.58m | 3:10PM0.96m | 4:09AM0.63m | 3:44PM1.13m | 5:20AM0.68m | 4:37PM1.30m | 7:01AM0.68m | 7:27PM1.39m | 8:35AM0.60m | 9:25PM1.30m | 9:39AM0.48m | 10:14PM1.17m | ||||||||
 |  |  | | |  | | |  |  | | | | | | | | | | | | |
 | 5:24 | — | — | 5:24 | — | — | 5:26 | — | — | 5:26 | — | — | 5:26 | — | — | 5:28 | — | — | 5:28 | — | — |
 | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:37 | — |
mm | 4 | — | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 28 | 26 | 29 | 29 | 26 | 29 | 29 | 26 | 29 | 29 | 26 | 30 | 29 | 26 |
Feels °C | 30 | 30 | 30 | 31 | 30 | 30 | 30 | 31 | 30 | 32 | 31 | 30 | 31 | 31 | 30 | 31 | 31 | 30 | 33 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | SE 11 | SE 10 | SE 5 | ESE 8 | ESE 5 | ESE 5 | SE 10 | S 8 | S 9 | S 9 | S 10 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 8 | SSW 8 | SE 13 | SE 17 | SE 17 | SE 17 |
| kJ | 29 | 28 | 23 | 36 | 14 | 14 | 25 | 35 | 99 | 125 | 148 | 138 | 110 | 110 | 82 | 55 | 39 | 175 | 2167 | 2945 | 5452 |
Swell 2 Height (m) Direction Period (s) | SSW 8 | SSW 8 | SE 10 | SE 10 | ESE 8 | SE 10 | S 8 | ESE 6 | SE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 10 | ESE 10 | ESE 10 | ESE 11 | SE 14 | SE 16 | S 8 | SW 9 | SSW 8 |
| kJ | 11 | 11 | 27 | 26 | 19 | 25 | 13 | 17 | 29 | 44 | 44 | 44 | 42 | 20 | 11 | 37 | 51 | 260 | 34 | 13 | 37 |
Swell 3 Height (m) Direction Period (s) | ESE 8 | ESE 8 | ESE 8 | SSW 8 | SE 10 | SSW 7 | S 10 | SE 10 | ESE 7 | ESE 7 | ESE 6 | ESE 6 | SE 9 | ESE 7 | ESE 6 | SSE 10 | ESE 10 | S 8 | E 12 | E 13 | — |
| kJ | 13 | 13 | 13 | 11 | 26 | 5 | 8 | 25 | 9 | 4 | 4 | 3 | 3 | 4 | 4 | 9 | 22 | 34 | 72 | 12 | — |
Wind waves Height (m) Direction Period (s) | SE 5 | SE 5 | — | ESE 4 | — | — | ESE 7 | — | — | — | — | — | — | — | — | — | — | — | — | S 8 | — |
| kJ | 24 | 36 | — | 13 | — | — | 25 | — | — | — | — | — | — | — | — | — | — | — | — | 66 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 64 | 32 | 21 | 36 | 500 | 27 | 64 | 3 | 3 | 3 | 3 | 3 | 0 | 3 | 3 | 3 | 3 | 3 | 0 | 3 | 3 |
Best forecast wave conditions in Shikoku | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Tainohama surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest