Surf Forecasts:
Tainohama surf forecast from 14 Sep 2026:
- Best quality surf: Tuesday 22 Sep, 3AM (local time) - 18ft (5.5m), 15s period, SSE swell with cross-onshore winds.
- Most powerful swell: Tuesday 22 Sep, 3AM (local time) - 18ft (5.5m), 15s period, SSE swell with 12,067 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 6AM (local time) - 4.5ft (1.3m), 9s 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 Tuesday (Sep 15) at 6AM. The primary swell is predicted to be 1.3m and 9s period with a secondary swell of 0.1m and 7s. 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 15s and forecast to arrive on Tuesday (Sep 22) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Monday (Sep 21) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Tue 15th Sep) | 4.5ft (1.3m) 9s |
| Best Surf | 3AM (Tue 22nd Sep) | 18ft (5.5m) 15s |
| Most Powerful | 3AM (Tue 22nd Sep) | 18ft (5.5m) 15s |
Table - best surf conditions forecast for Tainohama over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s break down the next couple of weeks for the local waters. It’s a story of two halves: a slow start then a proper pulse of energy.
The first real chance to get wet is Tuesday the 15th. Tainohama is our only spot. It’s a reef break, so bring your A-game. Tuesday morning is glassy with a light NNE breeze at 3 mph. You’re looking at a clean 4ft swell from the SE with a 9-second period and moderate energy (260). It’s surfable. The afternoon holds clean cross-off conditions with a 4ft swell (217 energy).
Wednesday 16th is a letdown. Swell drops to 3ft in the morning (122 energy) with a 9 mph cross-off, and it gets ordinary. The afternoon sees a 3ft ESE swell (98 energy) with an offshore wind, but heavy rain will be falling. Not worth it.
Then we hit a dull stretch. Thursday 17th and Friday 18th morning are poor. Tiny swell and building wind. Forget it.
Friday 18th afternoon is when it perks up. Swell jumps to 5ft from the ESE with an 11-second period and strong energy (700). Gentle cross-off wind keeps it clean. This is a good, solid wave.
Now, Saturday 19th through Monday 21st is for the hardcore crew. This is big surf. Saturday morning has an 12ft swell from the SE with a very long 15-second period and a massive 5441 energy. Sunday hits 13ft from the SE (7690 energy), and Monday holds 13ft from the SSE. The wind stays cross-off, so the surface will be clean, but these are serious, powerful waves. Not for beginners.
Tuesday 22nd September is a monster. A 34ft swell from the SE in the morning, with a 16-second period and 50628 energy. The report says it’s too big for this break. The wind is cross-onshore and choppy. Don’t even think about it. The afternoon is 30ft (35526 energy).
It blows out after that. Wednesday 23rd is a write-off with gale-force winds. Thursday 24th through Saturday 26th morning sees the swell drop to tiny, weak waves (1ft to 4ft).
Here’s the bright spot. Saturday 26th afternoon turns glassy again. The swell lifts to 4ft (298 energy) with no wind. Sunday 27th is the best call of the second week. You’ve got a 4-5ft swell from the SSE with a long 12-second period, energy readings of 655 and 710, and light, clean winds. This will be a fun, well-shaped wave.
Monday 28th and Tuesday 29th see the swell building again with S swells of 6ft to 8ft and a 14-second period. Energy climbs into the thousands. The wind is offshore. It gets solid.
Finally, Wednesday 30th September morning fires up for the experts: a 13ft S swell, a 16-second period, and 9878 energy. Light offshore wind. The report calls it exceptional for experts.
The takeaway? Friday 18th afternoon is your first good call. Sunday 27th is the best bet for fun, clean surf in the second week. The mid-week giant swell is a real event for the experienced, but for the rest of us, it’s a show.
Stay safe.
- Rusty
Short Range ForecastHeavy rain (total 62mm), heaviest during Wed afternoon. Warm (max 26°C on Tue morning, min 20°C on Wed night). Winds increasing (calm on Mon night, fresh winds from the N by Thu morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Fri morning, min 21°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||
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 | SE 9 | SE 9 | SE 9 | SE 9 | ESE 9 | SE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 9 | ESE 11 | ESE 15 | ESE 15 | ESE 14 | SE 14 | SE 14 | SE 14 | SE 14 |
Wave Graph  | |||||||||||||||||||
 kJ | 235 | 242 | 202 | 178 | 115 | 96 | 79 | 68 | 50 | 211 | 300 | 487 | 2930 | 5441 | 4977 | 6348 | 6607 | 6441 | 6752 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | cross-off | off | cross-off | off | off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off |
High Tide | 7:50AM1.90m | 7:32PM1.91m | 8:31AM1.77m | 7:58PM1.85m | 9:19AM1.62m | 8:25PM1.77m | 10:26AM1.48m | 8:57PM1.67m | 12:35PM1.40m | 9:48PM1.55m | 2:59PM1.49m | 00:08AM1.46m | |||||||
Low Tide | 1:28AM0.36m | 1:40PM0.75m | 2:04AM0.38m | 2:07PM0.90m | 2:43AM0.44m | 2:36PM1.06m | 3:31AM0.53m | 3:08PM1.21m | 4:39AM0.64m | 4:09PM1.34m | 6:24AM0.69m | 7:49PM1.36m | |||||||
 |  | |  | |  |  |  | | | | | |  |  | | | | | |
 | — | 5:43 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:47 | — | — |
 | 6:10 | — | 6:08 | — | — | 6:07 | — | — | 6:06 | — | — | 6:05 | — | — | 6:04 | — | — | 6:01 | — |
mm | 3 | 4 | 6 | — | 11 | 38 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 26 | 26 | 24 | 24 | 22 | 22 | 25 | 26 | 22 | 27 | 27 | 24 | 25 | 24 | 24 | 26 | 27 | 25 |
Feels °C | 29 | 30 | 30 | 27 | 26 | 23 | 21 | 22 | 24 | 22 | 27 | 27 | 25 | 24 | 23 | 23 | 26 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | SE 10 | SE 9 | SE 9 | SE 9 | SE 9 | ESE 9 | SE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 9 | ESE 11 | ESE 15 | ESE 15 | ESE 14 | SE 14 | SE 14 | SE 14 | SE 14 |
| kJ | 235 | 242 | 202 | 178 | 115 | 96 | 79 | 68 | 50 | 211 | 300 | 487 | 2930 | 5441 | 4977 | 6348 | 6607 | 6441 | 6752 |
Swell 2 Height (m) Direction Period (s) | E 12 | S 7 | E 13 | E 13 | E 12 | S 7 | E 13 | E 12 | E 12 | E 12 | E 20 | ESE 18 | E 10 | — | — | — | — | E 10 | ESE 10 |
| kJ | 12 | 1 | 14 | 12 | 3 | 1 | 3 | 3 | 3 | 3 | 8 | 211 | 986 | — | — | — | — | 1249 | 746 |
Swell 3 Height (m) Direction Period (s) | S 7 | E 15 | S 6 | S 7 | E 14 | S 7 | S 7 | S 7 | S 7 | E 14 | S 11 | S 10 | S 10 | — | — | — | — | — | — |
| kJ | 1 | 17 | 1 | 1 | 4 | 1 | 1 | 1 | 1 | 4 | 2 | 2 | 7 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | NNE 2 | NNE 3 | NNE 4 | NNE 4 | NNE 5 | NE 5 | NE 4 | NE 3 | — | — | — | — | NNE 4 | NNE 4 | NNE 4 | NNE 4 |
| kJ | — | — | — | 1 | 8 | 10 | 9 | 31 | 43 | 4 | 2 | — | — | — | — | 20 | 21 | 29 | 29 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 64 | 64 | 0 | 0 | 0 | 0 | 64 | 64 | 64 | 64 | 77 | 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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