
Surf Forecasts:
Tainohama surf forecast from 31 Jul 2026:
- Best quality surf: Wednesday 5 Aug, 6PM (local time) - 16ft (5.0m), 18s period, SE swell with cross-onshore winds.
- Most powerful swell: Thursday 6 Aug, 9AM (local time) - 23ft (7.0m), 18s period, SE swell with 32,408 kJ wave energy.
- Next surfable swell (1★+): Friday 31 Jul, 3PM (local time) - 1ft (0.3m), 13s 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 Friday (Jul 31) at 3PM. The primary swell is predicted to be 0.3m and 13s period with a secondary swell of 0.4m and 9s. Another secondary swell of 0.2m 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 7.0m 18s and forecast to arrive on Thursday (Aug 06) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Sunday (Aug 02) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Fri 31st Jul) | 1ft (0.3m) 13s |
| Best Surf | 6PM (Wed 5th Aug) | 16ft (5.0m) 18s |
| Most Powerful | 9AM (Thu 6th Aug) | 23ft (7.0m) 18s |
Table - best surf conditions forecast for Tainohama over the next 16 days.
The Lowdown
Alright, let’s get into it. The next couple of weeks around Tainohama are a real mixed bag, a story of a slow, sleepy start that suddenly explodes into a monster, and then fades back out again. We’ve got a long window ahead, so let’s break it down day by day.
For the first few days, it’s pretty quiet. Friday the 31st and Saturday the 1st are basically flat. We’re talking ankle-biters at 1 ft. There’s not much to get excited about. The water temp is a touch warmer than usual for this time of year at 84°, nothing crazy, but it’s nice.
Sunday the 2nd sees a little bump in size. The morning is clean with a cross-offshore breeze, but at 2 ft, it’s still not worth paddling out for. The afternoon picks up a bit to 4 ft, and there’s a bit more energy in the water. It’s getting there, but the conditions are still just marginal.
Monday the 3rd is where things start to get interesting. The morning has clean 5 ft surf with a light cross-offshore wind and strong energy. This is probably the first real session of the run for the more experienced crew. Tainohama (Kochi) is a reef break, so it’s not for the faint of heart anyway. The winds are light and it’s looking clean. Monday afternoon, the wind swings onshore from the south, and the size jumps to 6 ft, but the quality drops off.
Now, here’s where the forecast goes off the rails a bit. Tuesday the 4th rolls in with a solid pulse of 10 ft from the ESE. The energy is strong. This is getting into the big and challenging territory. The wind is onshore, though, so it’s going to be a bit of a mess. Wednesday the 5th is next level. The swell is pumping at 15 ft to 16 ft with very strong energy. This is big, powerful surf. The wind is light, but it’s cross-shore. For a reef break like this, these are expert-only waves. This is not a day to be casual. This is the kind of day that separates the men from the boys.
Thursday the 6th is simply enormous. The swell is forecast at a massive 23 ft with incredibly strong energy. The data says it all: the swell is predicted to be too big for this break. It’s just going to be relentless, closed-out heavy water. Even with the light winds, this is no-go. Friday the 7th is still huge, with 18 ft to 20 ft, but the wind is picking up onshore and there’s a risk of thunderstorms. It’s going to be a wild, stormy mess out there. Honestly, with that much swell and wind, Tainohama looks more interesting for the kite surfers than us paddle surfers.
By Saturday the 8th, the swell starts to drop, but it’s still sizeable at 13 ft in the morning. The wind is still cross-onshore and it’s getting choppy. The energy is still strong. It’s coming down from the peak, but it’s still a beast. The afternoon drops to 8 ft, but the wind is up and it’s getting messy.
From Sunday the 9th onward, it’s a steady decline back to the small, ordinary stuff. The swell is dropping from 6 ft down to under 3 ft by the middle of the next week. The wind is variable, mostly onshore or cross-shore, and the energy drops from moderate back to weak. The second week is pretty bleak. There’s nothing that stands out. It’s back to small, weak, and often messy surf. A few days have clean conditions, like the 12th and 13th with offshore winds, but the swell is just too small to be worth the paddle.
So, to sum it up: the standout days are Monday morning the 3rd for a clean, fun-sized wave, and if you’re a proper charger, the window from the 4th to the 6th is as big as it gets, but it’s going to be dangerous and messy. For most of us, that Monday morning is the one. The long-range stuff later in the second week is nothing but a promise that hasn’t kept yet.
That’s the look of it from here.
Rusty
Short Range ForecastMostly dry. Warm (max 35°C on Sun afternoon, min 27°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Mon afternoon. Warm (max 31°C on Wed afternoon, min 26°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | |||||||||||||||
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 9 | SE 13 | SE 10 | SE 10 | SE 11 | SE 16 | ESE 18 | ESE 16 | ESE 15 | ESE 15 | ESE 16 | ESE 18 | ESE 18 | ESE 18 | ESE 17 | SE 17 | SE 17 | SE 18 | SE 18 | SSE 17 | SSE 17 |
Wave Graph | |||||||||||||||||||||
24 | 26 | 23 | 28 | 29 | 64 | 174 | 636 | 621 | 867 | 1393 | 3777 | 5132 | 6059 | 9156 | 10308 | 13773 | 21236 | 32408 | 29237 | 25918 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | cross-off | glassy | cross-on | off | cross-off | cross-off | cross-off | cross-off | on | on | on | on | cross-on | cross | cross-on | glassy | cross-off | cross-on | cross-off |
High Tide | 7:35PM1.90m | 7:11AM1.94m | 8:02PM1.88m | 7:52AM1.88m | 8:29PM1.85m | 8:35AM1.79m | 8:56PM1.82m | 9:22AM1.66m | 9:26PM1.77m | 10:22AM1.52m | 10:01PM1.71m | 11:52AM1.41m | 10:46PM1.65m | ||||||||
Low Tide | 1:06PM0.23m | 1:20AM0.76m | 1:39PM0.33m | 1:55AM0.70m | 2:11PM0.47m | 2:32AM0.66m | 2:42PM0.63m | 3:14AM0.65m | 3:15PM0.81m | 4:03AM0.67m | 3:50PM1.00m | 5:07AM0.69m | 4:36PM1.17m | ||||||||
5:11 | — | — | 5:11 | — | — | 5:13 | — | — | 5:13 | — | — | 5:15 | — | — | 5:15 | — | — | 5:16 | — | — | |
— | 7:02 | — | — | 7:01 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | |
mm | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | — | — | — | — | — | — | — | 2 |
Temp °C | 31 | 31 | 28 | 32 | 32 | 29 | 34 | 35 | 30 | 30 | 29 | 27 | 29 | 29 | 27 | 30 | 31 | 27 | 31 | 31 | 28 |
Feels °C | 34 | 35 | 32 | 35 | 35 | 33 | 34 | 37 | 33 | 34 | 32 | 32 | 33 | 32 | 31 | 33 | 34 | 32 | 34 | 34 | 32 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 10 | SE 10 | SE 11 | SE 16 | ESE 18 | ESE 16 | ESE 15 | ESE 15 | ESE 16 | ESE 18 | ESE 18 | ESE 18 | ESE 17 | SE 17 | SE 17 | SE 18 | SE 18 | SSE 17 | SSE 17 |
23 | 23 | 23 | 28 | 29 | 64 | 174 | 636 | 621 | 867 | 1393 | 3777 | 5132 | 6059 | 9156 | 10308 | 13773 | 21236 | 32408 | 29237 | 25918 | |
Swell 2 Height (m) Direction Period (s) | SSW 5 | S 4 | SE 11 | SSW 4 | ESE 17 | SE 11 | ESE 14 | S 7 | SE 10 | SE 10 | S 8 | — | — | — | — | — | — | — | — | — | — |
4 | 1 | 20 | 2 | 28 | 29 | 120 | 4 | 15 | 15 | 5 | — | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | SE 12 | SE 13 | SSW 5 | S 7 | S 4 | ESE 19 | SE 9 | SSW 8 | SSW 8 | S 8 | S 8 | — | — | — | — | — | — | — | — | — | — |
24 | 26 | 2 | 1 | 1 | 35 | 41 | 7 | 6 | 5 | 4 | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | N 3 | SW 5 | — | — | WSW 2 | NE 4 | NNE 4 | NNE 3 | E 4 | ESE 6 | E 6 | E 6 | ESE 7 | — | — | — | — | — | E 9 | — |
— | 1 | 11 | — | — | 1 | 5 | 7 | 9 | 22 | 75 | 173 | 166 | 172 | — | — | — | — | — | 1494 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 439 | 413 | 0 | 18 | 18 | 0 | 0 | 64 | 3 | 3 | 3 | 3 | 64 | 3 | 3 | 438 | 454 | 454 |
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.











