
Surf Forecasts:
Tainohama surf forecast from 10 Aug 2026:
- Best quality surf: Tuesday 11 Aug, 12AM (local time) - 3.5ft (1.0m), 10s period, S swell with offshore winds.
- Most powerful swell: Tuesday 11 Aug, 3AM (local time) - 3.5ft (1.0m), 11s period, S swell with 238 kJ wave energy.
- Next surfable swell (1★+): Tuesday 11 Aug, 12AM (local time) - 3.5ft (1.0m), 10s 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 Tuesday (Aug 11) at 12AM. The primary swell is predicted to be 1.0m and 10s period with a secondary swell of 0.6m and 12s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Tainohama in the next 16 days are 1.0m 11s and forecast to arrive on Tuesday (Aug 11) at 3AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Tuesday (Aug 11) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Tue 11th Aug) | 3.5ft (1.0m) 10s |
| Best Surf | 12AM (Tue 11th Aug) | 3.5ft (1.0m) 10s |
| Most Powerful | 3AM (Tue 11th Aug) | 3.5ft (1.0m) 11s |
Table - best surf conditions forecast for Tainohama over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it. We’ve got a pretty quiet spell ahead for Tainohama. The swell is on the small side for most of the 16-day window, and honestly, the conditions are mostly ordinary or poor. The water is sitting at 84° with a slight anomaly, so it’s a touch warmer than average for this time of year.
The first real chance to get wet is Monday afternoon, the 10th of August. We’ve got a clean 3ft swell from the south with a 10-second period, which is a nice long period groundswell. The energy is moderate (390). The wind is cross-off from the NNE at 9 mph, so the face should be clean enough for a paddle. It’s an advanced reef break, and it’s fairly consistent, but expect crowds sometimes. The swell direction is from the south, which is the optimum direction for this spot, so it should line up alright. The size is small, though, so it’s not a big day.
Tuesday morning, the 11th, is similar with 3ft from the south, but the wind is a bit stronger at 16 mph, still cross-off. It’s still clean, but that wind is stiff. Tuesday afternoon drops to 3ft and the score drops to poor. Not worth it.
Wednesday morning, the 12th, is a special little window. The swell drops to 2ft from the SSW, but we get glassy conditions with a slight air from the SSW at 3 mph. The water will be like a mirror. The period is 10 seconds, so the waves will have a bit of shape. It’s only surfable, very ordinary, but for a glassy morning on a small reef, it could be a fun, quiet session. The energy is still moderate (196). This is the best on offer in the first week.
After that, it gets rough. From Wednesday afternoon through to the end of the week, it’s onshore, cross-on, and choppy with storm risk and swell dropping to 2ft and then 2ft. The energy drops to weak from 102 to 91. The 10th to the 15th has a gap of a few days of poor conditions. Saturday morning the 15th brings a brief reprieve with glassy conditions and 3ft from the south, but it’s only a one-star morning. The afternoon goes back onshore.
The second week is a slow grind. The swell drops to 2ft and 1ft from the 18th to the 20th with weak energy. The 21st of August, Friday morning, is a standout in the second week. We get 3ft from the SSE, but with a short 8-second period, and glassy conditions with the wind dead calm. That’s clean but small. The 25th of August, Tuesday morning, is another promising one looking further out. The swell picks back up to 3ft from the SE with a 10-second period, and it’s glassy. The energy is moderate (174). It’s surfable but still very ordinary. For a long-range call, that’s the one to keep an eye on, but it’s uncertain.
Overall, the best bet is that glassy Wednesday morning, the 12th, for a clean, small session. The 25th is a long-range hope. Don’t expect much size.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Thu morning. Warm (max 31°C on Mon afternoon, min 22°C on Mon night). Winds decreasing (fresh winds from the NNE on Tue morning, calm by Wed night). | Days 5-7 Weather SummaryModerate rain (total 15mm), heaviest on Thu afternoon. Warm (max 29°C on Sat morning, min 24°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | ||||||||||||||
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) | S 10 | S 10 | S 10 | SSW 10 | SSW 10 | SSW 10 | S 10 | S 9 | SSW 9 | SSW 9 | S 9 | S 9 | S 9 | S 8 | S 10 | SSW 10 | S 9 | S 10 | S 9 | ESE 11 |
Wave Graph | ||||||||||||||||||||
190 | 216 | 216 | 173 | 173 | 92 | 88 | 83 | 88 | 86 | 79 | 78 | 56 | 71 | 125 | 128 | 108 | 90 | 81 | 202 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross-off | off | glassy | on | cross-on | cross-on | on | on | on | on | cross-off | glassy | on | cross | on | cross-on | cross |
High Tide | 5:17PM1.75m | 3:58AM1.76m | 5:46PM1.83m | 4:47AM1.87m | 6:13PM1.88m | 5:29AM1.95m | 6:38PM1.92m | 6:09AM2.00m | 7:03PM1.93m | 6:47AM2.00m | 7:28PM1.93m | 7:26AM1.97m | 7:52PM1.91m | |||||||
Low Tide | 10:39PM1.15m | 10:54AM0.28m | 11:15PM1.03m | 11:32AM0.23m | 11:48PM0.90m | 12:07PM0.22m | 00:20AM0.79m | 12:40PM0.26m | 00:51AM0.69m | 1:11PM0.34m | 1:24AM0.61m | 1:41PM0.46m | 1:58AM0.57m | |||||||
— | — | 5:20 | — | — | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — | |
6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — | — | 6:47 | — | |
mm | — | — | — | — | — | 1 | 1 | 2 | 7 | 6 | 6 | 1 | — | — | — | — | 2 | — | — | 1 |
Temp °C | 31 | 26 | 29 | 29 | 25 | 26 | 25 | 25 | 26 | 25 | 25 | 28 | 28 | 25 | 29 | 29 | 26 | 28 | 28 | 26 |
Feels °C | 32 | 26 | 25 | 26 | 27 | 27 | 27 | 28 | 27 | 27 | 28 | 29 | 29 | 28 | 31 | 31 | 29 | 30 | 29 | 30 |
Swell 1 Height (m) Direction Period (s) | S 10 | S 10 | S 10 | SSW 10 | SSW 10 | S 9 | S 10 | S 9 | SSW 9 | SSW 9 | S 9 | S 9 | S 9 | S 8 | S 10 | SSW 10 | S 9 | S 10 | S 9 | ESE 11 |
190 | 216 | 216 | 173 | 173 | 85 | 88 | 83 | 88 | 86 | 79 | 78 | 56 | 71 | 125 | 128 | 108 | 90 | 81 | 202 | |
Swell 2 Height (m) Direction Period (s) | E 12 | E 12 | E 11 | E 11 | E 11 | SSW 10 | SSW 10 | SW 10 | ESE 4 | ESE 4 | ESE 4 | E 9 | ESE 9 | E 10 | ESE 11 | E 11 | ESE 10 | E 10 | E 10 | S 9 |
144 | 101 | 63 | 57 | 35 | 92 | 58 | 26 | 3 | 1 | 3 | 15 | 16 | 30 | 24 | 82 | 74 | 51 | 33 | 54 | |
Swell 3 Height (m) Direction Period (s) | SW 11 | SE 14 | SE 13 | SE 13 | NE 4 | E 10 | E 10 | ESE 5 | E 9 | E 9 | E 10 | SE 11 | SE 11 | SE 11 | SE 8 | SE 8 | SE 12 | SE 12 | SE 11 | SE 11 |
56 | 31 | 28 | 27 | 4 | 19 | 19 | 2 | 7 | 15 | 16 | 20 | 19 | 29 | 11 | 10 | 23 | 49 | 45 | 43 | |
Wind waves Height (m) Direction Period (s) | NE 4 | NE 4 | NE 4 | NE 5 | N 4 | NNE 4 | — | E 5 | E 7 | — | — | — | — | — | — | — | — | — | ESE 5 | SE 4 |
3 | 14 | 14 | 49 | 11 | 1 | — | 7 | 23 | — | — | — | — | — | — | — | — | — | 30 | 21 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 21 | 0 | 21 | 27 | 0 | 0 | 3 | 3 | 64 | 3 | 3 | 3 | 3 | 0 | 0 | 3 | 3 | 3 | 32 | 2 |
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.











