Surf Forecasts:
Tainohama surf forecast from 5 Aug 2026:
- Best quality surf: Thursday 6 Aug, 3PM (local time) - 18ft (5.5m), 15s period, SE swell with cross-onshore winds.
- Most powerful swell: Thursday 6 Aug, 3PM (local time) - 18ft (5.5m), 15s period, SE swell with 11,757 kJ wave energy.
- Next surfable swell (1★+): Thursday 6 Aug, 9AM (local time) - 15ft (4.5m), 14s 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 06) at 9AM. The primary swell is predicted to be 4.5m and 14s period. 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 5.5m 15s and forecast to arrive on Thursday (Aug 06) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Wednesday (Aug 12) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Thu 6th Aug) | 15ft (4.5m) 14s |
| Best Surf | 3PM (Thu 6th Aug) | 18ft (5.5m) 15s |
| Most Powerful | 3PM (Thu 6th Aug) | 18ft (5.5m) 15s |
Table - best surf conditions forecast for Tainohama over the next 16 days.
The Lowdown
Alright folks, let’s talk Tainohama. This reef break (Japan) is a tricky one, mainly for the experienced crew, and we’ve got some serious energy coming. The water’s about 84°, which is a touch warmer than usual for this time of year, so you won’t need the thickest wetsuit.
We’re starting right out of the gate on Thursday the 6th of August with a massive pulse. The morning is the standout, no question. We’re looking at a solid 15ft SE groundswell, pumping in with a very long 14-second period. The wave energy is extreme, clocking in at (8335). A light NE breeze keeps it clean. This is a serious, expert-only situation – too big for anyone but the most skilled. It’s going to be epic for those guys, but you have to know what you’re doing.
Thursday afternoon, the swell actually jumps to 18ft from the SE (period 15 seconds) with energy hitting (21069). The wind turns cross-on, making it choppy, and honestly, it might just be too much size for this break to handle well. The morning is the real gem.
The rest of the first week is a write-off. Friday and Saturday are plagued by cross-onshore winds and stormy conditions, making the 13ft and 8ft swells messy and unappealing. Let’s move on.
We get a bit of a breather on Sunday the 9th of August. The morning is magic: a glassy 5ft SSW groundswell with a period of 14 seconds. Clean, lined-up waves for the experienced surfer. That's a great session before the next storm rolls in.
Another real highlight for the more advanced crew arrives on Tuesday the 11th of August. We’ve got a glassy morning with a 3ft SSW swell and a glassy afternoon with a 5ft SSW swell. Dead calm winds, super clean conditions. It’s small, but the quality will be there for those who can make the most of the long-period groundswell – this kind of swell can be a bit straighter on a reef, but the cleanliness makes up for it.
Looking into the second week, things quieten down. Wednesday the 12th offers a small, clean 4ft swell on the morning with a light offshore, but nothing special. Saturday the 15th has a small, clean 5ft swell in the morning with a cross-offshore breeze. Worth a look if you're desperate.
The best bet of the whole run? It’s that Thursday morning, the 6th of August. That’s the one. After that, keep your eyes on Sunday the 9th and Tuesday the 11th.
- Rusty
Short Range ForecastHeavy rain (total 65mm), heaviest during Fri night. Warm (max 31°C on Thu morning, min 25°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sun afternoon. Warm (max 29°C on Tue morning, min 23°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
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 14 | SE 15 | SE 14 | SSE 13 | SSE 13 | SSE 12 | SSW 13 | SSW 13 | SSW 13 | SSW 14 | SW 14 | SSE 12 | SSW 13 | SSW 12 | S 11 | S 11 | SSW 12 | SSW 11 | SSW 11 | S 10 | SSW 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 8335 | 11757 | 8108 | 5696 | 4713 | 3919 | 1901 | 1488 | 1120 | 870 | 788 | 589 | 762 | 727 | 426 | 304 | 480 | 387 | 303 | 130 | 184 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross | cross-on | cross-on | cross-on | cross-on | on | on | glassy | on | on | on | on | cross | glassy | glassy | cross-off | off | on | off |
High Tide | 11:52AM1.41m | 10:46PM1.65m | 2:17PM1.41m | 11:57PM1.59m | 3:58PM1.53m | 1:36AM1.59m | 4:44PM1.65m | 2:58AM1.66m | 5:17PM1.75m | 3:58AM1.76m | 5:46PM1.83m | 4:47AM1.87m | 6:13PM1.88m | ||||||||
Low Tide | 4:36PM1.17m | 6:32AM0.68m | 6:10PM1.32m | 8:05AM0.61m | 8:34PM1.34m | 9:18AM0.49m | 9:53PM1.26m | 10:11AM0.37m | 10:39PM1.15m | 10:54AM0.28m | 11:15PM1.03m | 11:32AM0.23m | 11:48PM0.90m | ||||||||
 |  |  | | | | | |  |  | | | | | |  | |  | | | | |
 | 5:16 | — | — | 5:16 | — | — | 5:16 | — | — | 5:18 | — | — | 5:18 | — | — | 5:20 | — | — | 5:20 | — | — |
 | — | 6:58 | — | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — |
mm | — | 1 | 11 | 12 | 11 | 27 | 3 | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 31 | 31 | 27 | 29 | 29 | 26 | 29 | 29 | 26 | 28 | 28 | 26 | 28 | 28 | 25 | 29 | 29 | 27 | 30 | 30 | 27 |
Feels °C | 34 | 33 | 31 | 31 | 31 | 28 | 31 | 30 | 29 | 31 | 29 | 29 | 29 | 29 | 28 | 32 | 33 | 29 | 33 | 34 | 30 |
Swell 1 Height (m) Direction Period (s) | SE 14 | SE 15 | SE 14 | SSE 13 | SSE 13 | SSE 12 | SSW 13 | SE 9 | SSW 13 | SSW 14 | SSE 12 | SSE 12 | SSW 13 | SSW 12 | S 11 | S 11 | SSW 12 | SSW 11 | SSW 11 | S 10 | SSW 10 |
| kJ | 8335 | 9312 | 6889 | 4999 | 4713 | 3919 | 1901 | 695 | 1120 | 870 | 633 | 589 | 762 | 727 | 426 | 287 | 480 | 387 | 303 | 130 | 184 |
Swell 2 Height (m) Direction Period (s) | — | — | — | E 16 | E 15 | E 15 | E 15 | SSW 13 | SE 8 | SE 8 | SW 14 | SSW 13 | E 12 | E 12 | SW 12 | SSW 12 | ESE 11 | E 11 | E 11 | SSW 11 | E 11 |
| kJ | — | — | — | 5 | 4 | 4 | 4 | 1488 | 428 | 164 | 788 | 572 | 190 | 141 | 306 | 304 | 39 | 37 | 39 | 109 | 166 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SE 16 | S 12 | E 13 | E 13 | S 11 | S 11 | E 12 | ESE 11 | SE 13 | SE 13 | SE 13 | E 11 | E 15 |
| kJ | — | — | — | — | — | — | — | — | 10 | 273 | 329 | 272 | 114 | 84 | 69 | 40 | 7 | 7 | 7 | 55 | 17 |
Wind waves Height (m) Direction Period (s) | — | SE 15 | SE 14 | SE 13 | — | SE 9 | SE 9 | — | SE 8 | — | — | — | — | — | — | — | — | N 3 | NNE 4 | — | — |
| kJ | — | 11757 | 8108 | 5696 | — | 1024 | 865 | — | 314 | — | — | — | — | — | — | — | — | 7 | 1 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 454 | 77 | 454 | 454 | 454 | 348 | 438 | 3 | 0 | 420 | 3 | 348 | 3 | 3 | 0 | 0 | 21 | 0 | 3 | 0 |
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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