Surf Forecasts:
Tainohama surf forecast from 16 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 6AM (local time) - 1.5ft (0.4m), 10s period, SE swell with glassy winds.
- Most powerful swell: Friday 21 Aug, 6AM (local time) - 4.5ft (1.4m), 11s period, S swell with 485 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 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 Wednesday (Aug 19) at 6AM. The primary swell is predicted to be 0.5m and 8s period with a secondary swell of 0.4m and 10s. Another secondary swell of 0.6m and 4s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Tainohama in the next 16 days are 1.4m 11s and forecast to arrive on Friday (Aug 21) at 6AM. 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 (Wed 19th Aug) | 1.5ft (0.4m) 10s |
| Best Surf | 6AM (Wed 19th Aug) | 1.5ft (0.4m) 10s |
| Most Powerful | 6AM (Fri 21st Aug) | 4.5ft (1.4m) 11s |
Table - best surf conditions forecast for Tainohama over the next 16 days.
The Lowdown
Alright folks, grab a coffee and let's sort out what's happening at Tainohama. The first part of this forecast is a complete dud. We've got storm after storm, onshore winds, and barely a ripple. Expect about seven days of nothing worth paddling out for.
The water temp is sitting at around 29°C, which is pretty standard for this time of year, a touch warm but nothing unusual.
We finally see a pulse late on Friday the 21st. There's a 1.4m south swell with a moderate 11-second period, but the wind is messy and cross-onshore. It's a tease of energy but the conditions are poor. Not the one.
The real show starts on Monday the 24th of August. That morning is the clear standout. A solid 1.9m south-east groundswell hits with a very long 16-second period. The wind is glassy, and the energy is pumping at 1842. This long-period south-east groundswell on the exposed reef is going to deliver.
Tuesday the 25th follows up with a 2.5m south-east groundswell at 15 seconds. Again, glassy in the morning and an energy reading of 2654. This is getting serious. By Wednesday the 26th, we hit 3.5m, and this is now expert-only territory.
The absolute high point looks to be Friday the 28th of August. We've got a massive 4.5m SSE groundswell with a 15-second period, and a clean offshore wind. The energy is huge at 8,546. That's a world-class reef wave for the brave and the skilled. Saturday the 29th sees the swell peak at 6.5m, but the wind turns onshore and it might just be too big.
We get a bit of a breather on Sunday the 30th with 3.0m of south swell and clean conditions, before another big pulse hits on Monday the 31st with a 4.5m ESE groundswell. The entire second half of this outlook is a serious, heavy-water event. If you aren't an expert, stay on the beach and watch.
Rusty.
Short Range ForecastHeavy rain (total 29mm), heaviest during Sun morning. Warm (max 28°C on Tue afternoon, min 25°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Wed afternoon, min 25°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||
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) | ESE 6 | ESE 6 | ESE 6 | SE 5 | SE 11 | SE 11 | ESE 8 | SE 5 | SE 10 | SE 10 | SE 10 | ESE 5 | S 10 | S 9 | S 10 | S 11 | S 11 | S 10 | S 10 | SSW 10 | SSW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 100 | 164 | 108 | 45 | 30 | 30 | 62 | 33 | 35 | 33 | 25 | 39 | 66 | 129 | 257 | 466 | 434 | 333 | 284 | 235 | 293 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | on | cross-on | on | on | cross-on | cross-on | on | on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 7:52PM1.91m | 8:05AM1.88m | 8:18PM1.88m | 8:47AM1.76m | 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 | ||||||||
Low Tide | 1:41PM0.46m | 1:58AM0.57m | 2:11PM0.61m | 2:35AM0.56m | 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 | ||||||||
 | |  | | |  | |  |  | | |  | | | | | | | |  | | |
 | 5:22 | — | — | 5:24 | — | — | 5:24 | — | — | 5:24 | — | — | 5:26 | — | — | 5:26 | — | — | 5:26 | — | — |
 | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — |
mm | 10 | 5 | 4 | 2 | 2 | 4 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 27 | 26 | 27 | 27 | 26 | 27 | 28 | 26 | 27 | 28 | 26 | 28 | 28 | 26 | 27 | 28 | 26 | 30 | 31 | 27 |
Feels °C | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 30 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 30 | 30 | 31 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 9 | S 8 | S 8 | SE 5 | SSW 8 | SSW 8 | SE 10 | ESE 4 | E 8 | ESE 5 | SE 10 | S 10 | S 9 | S 10 | S 11 | S 11 | S 10 | S 10 | ESE 10 | SSW 9 |
| kJ | 51 | 39 | 35 | 33 | 29 | 20 | 19 | 28 | 13 | 33 | 20 | 25 | 66 | 129 | 257 | 466 | 434 | 333 | 284 | 41 | 185 |
Swell 2 Height (m) Direction Period (s) | E 10 | ESE 10 | ESE 10 | SE 11 | SSW 8 | SE 11 | SE 10 | SSW 8 | E 8 | SE 10 | SE 10 | ESE 8 | SE 10 | SE 10 | ESE 4 | SE 11 | SE 11 | ESE 10 | ESE 8 | ESE 8 | ESE 7 |
| kJ | 51 | 35 | 31 | 42 | 21 | 30 | 28 | 11 | 35 | 26 | 25 | 12 | 25 | 26 | 12 | 29 | 29 | 55 | 13 | 11 | 10 |
Swell 3 Height (m) Direction Period (s) | SE 12 | SE 11 | SE 11 | ESE 9 | SE 11 | E 9 | SE 11 | ESE 8 | SE 10 | SSW 8 | ESE 8 | SSW 8 | ESE 7 | S 11 | ESE 11 | E 8 | E 8 | SE 11 | SE 10 | SSE 9 | ESE 13 |
| kJ | 48 | 45 | 43 | 28 | 30 | 14 | 30 | 14 | 27 | 11 | 12 | 6 | 10 | 22 | 44 | 6 | 5 | 30 | 27 | 9 | 17 |
Wind waves Height (m) Direction Period (s) | ESE 6 | ESE 6 | ESE 6 | SE 5 | — | SE 5 | ESE 8 | SE 5 | — | ESE 4 | — | ESE 5 | ESE 4 | ESE 5 | — | ESE 4 | E 8 | — | — | SSW 10 | SSW 9 |
| kJ | 100 | 164 | 108 | 45 | — | 25 | 62 | 33 | — | 12 | — | 39 | 13 | 19 | — | 5 | 71 | — | — | 235 | 293 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 64 | 438 | 64 | 64 | 454 | 3 | 36 | 32 | 18 | 64 | 500 | 18 | 3 | 32 | 3 | 3 | 32 | 3 | 32 | 32 | 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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