Surf Forecasts:
Tainohama surf forecast from 31 Aug 2026:
- Best quality surf: Monday 7 Sep, 6AM (local time) - 8ft (2.5m), 10s period, E swell with offshore winds.
- Most powerful swell: Monday 7 Sep, 6AM (local time) - 8ft (2.5m), 10s period, E swell with 1,490 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 6AM (local time) - 3.5ft (1.0m), 8s 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 Wednesday (Sep 02) at 6AM. The primary swell is predicted to be 1.0m and 8s period with a secondary swell of 0.5m and 11s. Another secondary swell of 0.4m and 6s 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 2.5m 10s and forecast to arrive on Monday (Sep 07) at 6AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Thursday (Sep 03) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Wed 2nd Sep) | 3.5ft (1.0m) 8s |
| Best Surf | 6AM (Mon 7th Sep) | 8ft (2.5m) 10s |
| Most Powerful | 6AM (Mon 7th Sep) | 8ft (2.5m) 10s |
Table - best surf conditions forecast for Tainohama over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s coming down the line for Tainohama. This is a reef setup that takes a south swell, and we’ve got a bit of a slow start, but some serious firepower on the way.
The first few days are a write-off. Tuesday the 1st and Wednesday the 2nd are all onshore slop, with tiny weak waves and poor conditions. Best to save your energy. Thursday morning the 3rd is where we first get a sniff of something real. The wind goes glassy, just a light northerly, and we’ve got a 4ft SSE swell with 8 seconds of period. It’s small, but combined energy (202) is enough to get a few clean, rolling lines over the reef. That Thursday afternoon cleans up even more with a cross-offshore breeze, and the swell bumps to 4ft with a 10-second period. The water temp is about average for this time of year, so no surprises there.
Now, the real standout. We’ve got a big pulse arriving on Thursday the 10th. The morning shows a solid 12ft SE groundswell with a 15-second period, and the combined energy is a massive 4559. That’s serious power. The wind is directly offshore out of the north, and the conditions are clean. This is for expert surfers only – over 8ft, it’s a beast. The afternoon goes even bigger: 13ft from the ESE, 14-second period, 6533 combined energy, and a gentle offshore breeze. This is the best on offer, full stop. The reef at Tainohama is going to be handling this long-period energy beautifully, offering deep, powerful barrels. But with that quality, expect crowds to be possible, as it’s listed as sometimes crowded.
The day before that, Wednesday the 9th, is also a cracker. 8ft to 8ft ESE swell, a 12- to 14-second period, and clean cross-offshore wind. Combined energy over 1800, making for excellent surfing for experienced heads. The glassy Thursday morning the 8th with 5ft and an offshore breeze is a nice warm-up, too.
After that big Thursday, things hold up. Friday the 11th still has 6ft with an 11-second period, but the wind gets a bit funky. The second week gets messy. Saturday the 12th brings onshore wind and a building, bumpy swell, and from Sunday the 13th through to Wednesday the 16th, it’s all poor conditions with strong onshore winds, stormy weather, and choppy, ugly surf. There’s a gap of about three days with no recommendations.
So, the call is clear: Thursday the 10th at Tainohama is the absolute standout. If you’re a skilful surfer and you can handle heavy, powerful reef waves, that’s your window. The Wednesday the 9th is a close second.
Rusty, signing off.
Short Range ForecastHeavy rain (total 38mm), heaviest during Thu afternoon. Warm (max 29°C on Tue morning, min 23°C on Thu afternoon). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 236mm), heaviest during Fri morning. Warm (max 28°C on Sun afternoon, min 21°C on Fri afternoon). Winds decreasing (fresh winds from the N on Sat afternoon, calm by Sun afternoon). | ||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | ||||||||||||||
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 13 | E 12 | S 8 | SSE 8 | SSE 9 | SSE 9 | SSE 8 | SSE 10 | SSE 10 | S 9 | S 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | E 9 | ESE 9 | ESE 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 31 | 59 | 80 | 134 | 180 | 206 | 273 | 153 | 312 | 435 | 372 | 205 | 146 | 96 | 127 | 518 | 1204 | 606 | 755 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | on | cross-on | on | cross-on | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy |
High Tide | 8:17AM1.84m | 8:07PM1.88m | 9:01AM1.70m | 8:33PM1.82m | 9:56AM1.55m | 9:03PM1.74m | 11:25AM1.42m | 9:41PM1.64m | 2:23PM1.42m | 10:58PM1.53m | 3:47PM1.54m | 1:25AM1.51m | |||||||
Low Tide | 2:00AM0.46m | 2:09PM0.76m | 2:38AM0.48m | 2:37PM0.93m | 3:22AM0.54m | 3:06PM1.09m | 4:19AM0.62m | 3:42PM1.25m | 5:46AM0.69m | 5:33PM1.39m | 7:38AM0.67m | 8:48PM1.34m | |||||||
 |  | |  |  | |  |  |  |  | | | | | |  |  |  | | |
 | — | 5:33 | — | — | 5:35 | — | — | 5:35 | — | — | 5:35 | — | — | 5:37 | — | — | 5:37 | — | — |
 | 6:29 | — | 6:28 | — | — | 6:27 | — | — | 6:25 | — | — | 6:23 | — | — | 6:22 | — | — | 6:21 | — |
mm | — | — | — | 1 | 2 | 5 | 13 | 6 | 11 | 43 | 70 | 52 | 70 | — | — | — | 1 | — | — |
Temp °C | 27 | 29 | 29 | 27 | 28 | 28 | 27 | 24 | 24 | 24 | 23 | 22 | 22 | 26 | 27 | 23 | 27 | 28 | 25 |
Feels °C | 31 | 31 | 31 | 30 | 32 | 31 | 31 | 28 | 27 | 26 | 24 | 23 | 22 | 24 | 24 | 22 | 28 | 29 | 27 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 8 | S 8 | S 8 | SSE 8 | SSE 9 | SSE 9 | SSE 8 | SSE 10 | SSE 10 | S 9 | S 8 | ESE 8 | ESE 8 | ESE 8 | SSW 9 | ESE 9 | ESE 9 | SE 10 |
| kJ | 31 | 32 | 42 | 134 | 180 | 206 | 273 | 153 | 312 | 435 | 372 | 205 | 146 | 96 | 127 | 29 | 559 | 606 | 180 |
Swell 2 Height (m) Direction Period (s) | SSW 9 | ESE 13 | E 12 | E 12 | E 11 | E 11 | ESE 11 | ESE 10 | ESE 10 | ESE 10 | ESE 7 | ESE 8 | SSE 8 | SSW 8 | SSW 8 | — | SSW 9 | SE 10 | SSW 9 |
| kJ | 31 | 59 | 80 | 70 | 61 | 59 | 37 | 33 | 33 | 18 | 66 | 159 | 83 | 39 | 35 | — | 17 | 100 | 7 |
Swell 3 Height (m) Direction Period (s) | SE 10 | SE 9 | SE 9 | SE 10 | SE 10 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | — | SSW 9 | SSW 8 | S 7 | SSE 7 | — | SE 11 | SSW 9 | S 9 |
| kJ | 24 | 23 | 22 | 15 | 17 | 18 | 29 | 16 | 16 | 15 | — | 33 | 48 | 28 | 10 | — | 19 | 28 | 6 |
Wind waves Height (m) Direction Period (s) | — | — | — | E 4 | E 6 | ESE 4 | E 5 | — | NNE 3 | NNE 4 | NNE 4 | NNE 4 | N 3 | NNE 3 | NE 4 | ESE 9 | E 9 | — | ESE 9 |
| kJ | — | — | — | 5 | 15 | 12 | 15 | — | 2 | 21 | 21 | 19 | 1 | 10 | 17 | 518 | 1204 | — | 755 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 3 | 3 | 32 | 3 | 64 | 3 | 3 | 0 | 0 | 0 | 64 | 64 | 64 | 64 | 64 | 21 | 21 | 0 | 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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