
Surf Forecasts:
Tainohama surf forecast from 17 Jul 2026:
- Best quality surf: Tuesday 21 Jul, 12AM (local time) - 1.5ft (0.4m), 11s period, ESE swell with glassy winds.
- Most powerful swell: Saturday 25 Jul, 3AM (local time) - 1.5ft (0.4m), 16s period, SE swell with 94 kJ wave energy.
- Next surfable swell (1★+): Tuesday 21 Jul, 12AM (local time) - 1.5ft (0.4m), 11s period with ESE 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 (Jul 21) at 12AM. The primary swell is predicted to be 0.4m and 11s period with a secondary swell of 0.2m and 8s. Another secondary swell of 0.3m and 3s 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 0.4m 16s and forecast to arrive on Saturday (Jul 25) at 3AM. 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+) | 12AM (Tue 21st Jul) | 1.5ft (0.4m) 11s |
| Best Surf | 12AM (Tue 21st Jul) | 1.5ft (0.4m) 11s |
| Most Powerful | 3AM (Sat 25th Jul) | 1.5ft (0.4m) 16s |
Table - best surf conditions forecast for Tainohama over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s be straight with you—what we’ve got on the cards for Tainohama over the next two weeks is a real slow burn. For the first week, it’s flat as a pancake, with barely a whisper of swell. You’re looking at a solid gap of about seven days with nothing worth paddling out for. The wind’s mostly onshore, chopping up any tiny bump that tries to form. The energy’s weak, with combined swell energy readings sitting in the 30s and 40s (33–90), just not enough to get excited about.
Then, things start to stir around Friday, July 24th. The morning brings a bit of life—a glassy surface with a 1ft swell from the SE, period at 18 seconds. That’s a long-period groundswell, which means clean lines and proper shape, but it’s tiny. Combined energy is 90, still weak. The wind is glassy, so it’s the most promising session of the early period, but you’ll be scratching for waves.
The real standout doesn’t arrive until Monday, July 27th. The morning shows a 3ft SE swell at 14 seconds, with light onshore wind and combined energy jumping to 323 (moderate). It’s still marginal, but the size is building. The following days ramp up fast. Tuesday, July 28th has a 7ft SSE swell at 12 seconds in the morning (energy 1754), and by the afternoon it’s 8ft at 13 seconds (energy 2527). That’s strong wave energy, but the wind is cross-onshore, so it’ll be choppy. This is expert territory at over 8ft.
The biggest pulse hits Wednesday, July 29th—10ft in the morning, rising to 12ft in the afternoon from the SSE, period 14 seconds, with onshore wind. Combined energy is 3678 and 4815—very strong. This is big, powerful stuff, but it’s rough. The water temperature is about average for the time of year, no anomaly flagged.
Friday, July 31st is the best call for the whole outlook. The morning brings a 16ft S swell at 15 seconds, with a gentle cross-onshore breeze and combined energy of 10788—that’s extreme. It’s a very long-period groundswell, so while it’s massive, the long period means it’ll be better organised at a reef like Tainohama, with longer lulls between sets. The wind is just a gentle breeze, so it’s not totally blown out, but it’s cross-onshore. This is strictly for experts, no question. Crowds are possible here—listed as “sometimes”—so you might have company.
Overall, if you’re after the one true standout, it’s Friday, July 31st morning at Tainohama (Japan). The swell is huge, the period is long, and the wind is manageable. It’s a proper heavy slab for the experienced crew. The first week is a write-off, so save your energy for the end of the month.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Fri night. Warm (max 29°C on Sat morning, min 26°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Tue afternoon. Warm (max 31°C on Wed morning, min 26°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | ||||||||||||||
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 10 | ESE 9 | E 9 | SE 8 | ESE 9 | ESE 9 | SE 9 | SE 7 | SE 7 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 10 | SE 11 | SE 9 | SE 10 | SE 18 |
Wave Graph | |||||||||||||||||||
16 | 15 | 13 | 24 | 17 | 17 | 41 | 14 | 14 | 47 | 23 | 23 | 22 | 11 | 11 | 18 | 15 | 25 | 50 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | cross-on | on | on | cross-on | on | cross-on | glassy | cross | cross-on | glassy | glassy | cross-on | glassy | glassy | cross-on | cross-on |
High Tide | 7:36AM1.86m | 8:37PM1.82m | 8:20AM1.78m | 9:07PM1.78m | 9:08AM1.67m | 9:39PM1.74m | 10:05AM1.55m | 10:15PM1.70m | 11:22AM1.44m | 10:58PM1.65m | 1:13PM1.39m | 11:56PM1.62m | |||||||
Low Tide | 1:50AM0.82m | 2:07PM0.34m | 2:29AM0.78m | 2:42PM0.49m | 3:11AM0.75m | 3:18PM0.67m | 4:00AM0.73m | 3:56PM0.85m | 5:00AM0.72m | 4:43PM1.03m | 6:15AM0.69m | 5:52PM1.19m | |||||||
— | 5:03 | — | — | 5:03 | — | — | 5:03 | — | — | 5:05 | — | — | 5:05 | — | — | 5:05 | — | — | |
7:12 | — | 7:12 | — | — | 7:10 | — | — | 7:10 | — | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — | |
mm | 1 | — | — | 2 | — | — | — | — | — | — | 2 | 5 | 1 | — | 1 | — | — | — | 1 |
Temp °C | 27 | 29 | 29 | 27 | 29 | 29 | 27 | 29 | 29 | 27 | 29 | 30 | 28 | 31 | 31 | 28 | 31 | 31 | 27 |
Feels °C | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 33 | 33 | 32 | 34 | 34 | 34 | 35 | 36 | 33 | 35 | 35 | 32 |
Swell 1 Height (m) Direction Period (s) | SE 10 | ESE 9 | SE 8 | SE 8 | ESE 5 | SE 4 | SE 9 | SE 7 | SE 7 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 10 | SE 11 | SE 9 | SE 10 | SE 10 |
14 | 15 | 11 | 24 | 9 | 5 | 41 | 14 | 14 | 47 | 23 | 23 | 22 | 11 | 11 | 18 | 14 | 25 | 25 | |
Swell 2 Height (m) Direction Period (s) | ESE 9 | SE 9 | E 9 | ESE 3 | ESE 9 | ESE 9 | SSE 9 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSW 3 | SSE 8 | SSE 8 | ESE 10 | ESE 10 | SE 19 | SE 18 |
16 | 13 | 13 | 1 | 17 | 17 | 8 | 7 | 7 | 7 | 7 | 6 | 1 | 6 | 6 | 11 | 10 | 15 | 50 | |
Swell 3 Height (m) Direction Period (s) | SSW 7 | SSW 7 | SSW 6 | E 9 | SE 8 | SE 8 | ESE 12 | S 3 | ESE 11 | SW 8 | ESE 7 | ESE 6 | SSE 8 | ESE 6 | SE 6 | S 8 | SE 20 | S 8 | SSE 8 |
11 | 4 | 4 | 7 | 10 | 9 | 14 | 1 | 12 | 3 | 4 | 4 | 6 | 4 | 1 | 1 | 15 | 5 | 7 | |
Wind waves Height (m) Direction Period (s) | ESE 3 | ESE 3 | ESE 3 | — | — | SE 4 | SW 5 | — | S 3 | SSW 3 | — | — | SW 3 | — | — | — | — | — | SW 2 |
1 | 1 | 2 | — | — | 6 | 1 | — | 2 | 2 | — | — | 3 | — | — | — | — | — | 1 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 27 | 85 | 454 | 85 | 51 | 51 | 18 | 51 | 51 | 0 | 51 | 51 | 51 | 85 | 413 | 311 | 311 | 439 | 3 |
Best forecast wave conditions in Shikoku | |||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.










