
Surf Forecasts:
Tainohama surf forecast from 4 Aug 2026:
- Best quality surf: Thursday 6 Aug, 3PM (local time) - 18ft (5.5m), 14s period, SE swell with cross-onshore winds.
- Most powerful swell: Thursday 6 Aug, 3PM (local time) - 18ft (5.5m), 14s period, SE swell with 12,240 kJ wave energy.
- Next surfable swell (1★+): Wednesday 5 Aug, 6AM (local time) - 13ft (4.0m), 16s 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 Wednesday (Aug 05) at 6AM. The primary swell is predicted to be 4.0m and 16s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Tainohama in the next 16 days are 5.5m 14s and forecast to arrive on Thursday (Aug 06) at 3PM. 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+) | 6AM (Wed 5th Aug) | 13ft (4.0m) 16s |
| Best Surf | 3PM (Thu 6th Aug) | 18ft (5.5m) 14s |
| Most Powerful | 3PM (Thu 6th Aug) | 18ft (5.5m) 14s |
Table - best surf conditions forecast for Tainohama over the next 16 days.
The Lowdown
Alright, grab your wettie and listen up, this is Rusty.
Alright folks, we’ve got a solid, powerful run of Southern Ocean groundswell hitting Tainohama over the next few days, but this one is for the experienced crew only. This is a serious, heavy reef break, and the ocean is about to put on a show that is absolutely not for the faint-hearted or anyone without a few scars. We're talking some big, powerful, long-period groundswell pouring in, creating some serious, heavy pits.
The first real window opens up on Thursday, August 6th. The morning is looking like a standout. We’ve got a solid 16ft swell rolling in from the SE with a long 14-second period, and it's packing a heap of energy (9564). What makes this session special is the NE wind, giving us a clean, cross-off breeze. The water temp feels about average for the time of year. This is going to be world-class, but only for experts – this isn't a wave you learn on. The afternoon though, the swell jumps to 18ft, and while the energy goes through the roof (21874), that's too much size for this break, and the wind turns cross-onshore, so it'll be a messy beast.
Friday the 7th is another day for experts only. The swell holds at 16ft, with a very long 16-second period on the morning, but the wind is a moderate cross-shore, making it a bit bumpy. The afternoon brings a risk of thunderstorms and a cross-onshore wind that'll chop things up.
We then get a drop in quality through the weekend and into the start of the next week. The swell stays in the 10ft to 8ft range, but the wind is persistently cross-onshore or cross-shore with moderate to strong breezes, making for some choppy, ugly conditions. From Monday the 10th through to Wednesday the 12th, it's a write-off.
Now, for a change of pace, the second week of the forecast shows some real promise for a completely different, smaller, and cleaner vibe. On Thursday, August 13th, the swell drops right back to a tiny 4ft, but listen to this: it's glassy. Absolute millpond conditions with a slight SSE air. It’s not big, but for a sneaky session on the longboard, that glassy surface will be a dream.
Then, Friday the 14th and Saturday the 15th have some good news for the smaller wave crew. Friday is small at 3ft from the S, but we get a strong, clean offshore wind from the N. Saturday morning keeps that clean offshore flow, and the afternoon goes glassy again, though with a short period windswell. These are the days for the logs and fishes, with clean, offshore lines.
The biggest standout in the second week is Wednesday, August 19th. The swell is a modest 5ft from the E with a 10-second period, but the wind is a light cross-offshore from the NNE, and the energy is moderate (877). This is forecast to be "very good" and should offer some clean, well-shaped waves on the reef.
To be clear, the first week is big, powerful, and for experts only, while the second week cleans up nicely for smaller, more user-friendly conditions. The gap from the 10th to the 12th is a total write-off.
This is Rusty, signing off.
Short Range ForecastLight rain (total 9mm), mostly falling on Fri afternoon. Warm (max 31°C on Wed afternoon, min 25°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 29mm), heaviest during Fri night. Warm (max 29°C on Sat morning, min 26°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | ||||||||||||||
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 16 | ESE 16 | SE 16 | SE 15 | SE 14 | SE 14 | SSE 15 | SSE 16 | SSE 15 | S 15 | SSW 15 | SSW 14 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 |
Wave Graph | |||||||||||||||||||
8364 | 9886 | 10807 | 9790 | 9564 | 12240 | 10535 | 11494 | 10867 | 4618 | 4221 | 3566 | 4982 | 6278 | 4784 | 4084 | 3740 | 2852 | 2309 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | glassy | cross-off | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 9:26PM1.77m | 10:22AM1.52m | 10:01PM1.71m | 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 | |||||||
Low Tide | 4:03AM0.67m | 3:50PM1.00m | 5:07AM0.69m | 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 | |||||||
— | 5:15 | — | — | 5:16 | — | — | 5:16 | — | — | 5:16 | — | — | 5:18 | — | — | 5:18 | — | — | |
7:00 | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | |
mm | — | — | — | — | — | 1 | 1 | 1 | 6 | 10 | 5 | 3 | 1 | 4 | 4 | — | — | 2 | 5 |
Temp °C | 27 | 30 | 31 | 28 | 30 | 31 | 27 | 29 | 28 | 27 | 29 | 29 | 26 | 27 | 28 | 26 | 28 | 27 | 26 |
Feels °C | 29 | 32 | 33 | 32 | 33 | 34 | 31 | 29 | 30 | 29 | 31 | 30 | 28 | 29 | 29 | 27 | 29 | 27 | 28 |
Swell 1 Height (m) Direction Period (s) | ESE 16 | ESE 16 | SE 16 | SE 15 | SE 14 | SE 15 | SSE 15 | SSE 16 | SSE 15 | S 15 | SSW 15 | SSW 14 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 |
8364 | 9886 | 10807 | 9790 | 9564 | 9634 | 10535 | 11494 | 8581 | 4618 | 4221 | 3566 | 4982 | 6278 | 4784 | 4084 | 3740 | 2852 | 2309 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | ESE 13 | SE 15 | SE 14 | SE 14 | E 12 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | 212 | 9 | 8 | 8 | 44 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | SE 14 | — | — | SSE 15 | SE 10 | SE 10 | SE 10 | SE 10 | ESE 9 | SE 9 | SE 9 | ESE 8 | SE 8 | SE 8 |
— | — | — | — | — | 12240 | — | — | 10867 | 2033 | 2137 | 2033 | 1478 | 1320 | 1325 | 1474 | 1367 | 1168 | 616 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 3 | 64 | 267 | 0 | 0 | 454 | 77 | 454 | 454 | 451 | 482 | 454 | 438 | 488 | 438 | 1028 | 1028 | 1028 | 260 |
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.











