Surf Forecasts:
Tainohama surf forecast from 15 Sep 2026:
- Best quality surf: Sunday 20 Sep, 3AM (local time) - 10ft (3.0m), 13s period, ESE swell with offshore winds.
- Most powerful swell: Monday 21 Sep, 3AM (local time) - 11ft (3.5m), 14s period, ESE swell with 4,159 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 9PM (local time) - 3.5ft (1.1m), 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 9PM. The primary swell is predicted to be 1.1m and 9s period with a secondary swell of 0.2m and 13s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Tainohama in the next 16 days are 3.5m 14s and forecast to arrive on Monday (Sep 21) at 3AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 5s period and expected on Monday (Sep 21) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Tue 15th Sep) | 3.5ft (1.1m) 9s |
| Best Surf | 3AM (Sun 20th Sep) | 10ft (3.0m) 13s |
| Most Powerful | 3AM (Mon 21st Sep) | 11ft (3.5m) 14s |
Table - best surf conditions forecast for Tainohama over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s break down what’s cookin’.
We’ve got a slow start before things heat up. The first solid window hits on Tuesday the 15th at Tainohama. It’s an advanced reef break, and the water is about 82°, which is normal for this time of year. That Tuesday afternoon, we see a 4 ft SE swell with a 9-second period and a light cross-off shore breeze. Combined wave energy is moderate at 217. Clean and surfable.
Wednesday the 16th is a smaller day – nothing special. Things get real good on Friday the 18th. Friday morning is clean with 4 ft ESE swell and light cross-off wind, energy at 254. Friday afternoon is the real gem: same size, but a longer 11-second period bumps the energy to 367. Clean, lined-up waves.
Saturday the 19th and Sunday the 20th bring serious size – 8 ft to 10 ft SE swell with a very long 13 to 14-second period. Energy jumps to a strong 2458 and 2940. The wind stays cross-off and turns offshore on Sunday. This is heavy reef. Experts only.
Then we hit a dry spell. From Tuesday the 22nd through Monday the 28th, the surf turns tiny and messy – some days down to 0.7 ft. A full week of close-outs and poor conditions.
A brief bright spot on Saturday the 27th: a glassy morning with 2 ft SSE swell and zero wind. Energy is weak at 104, but it’s as clean as it gets. That afternoon, a strong 30 km/h offshore wind from the N with 4 ft SE swell shows up, but the period is only 5 seconds – messy and blown out.
The final look is Tuesday the 30th of September. The afternoon is the pick: 4 ft from the SSW with a very nice 13-second period, energy at 859. The onshore wind is a shame, but it’s the best bet at the end of the run.
My standout is Friday the 18th. Clean chest-to-head high SE swell with that longer period. Lock it in. The big stuff on the 19th-20th is gnarly, but only for the brave.
Choose your sessions wisely.
Rusty.
Short Range ForecastHeavy rain (total 23mm), heaviest during Wed afternoon. Warm (max 26°C on Tue afternoon, min 19°C on Wed night). Winds decreasing (fresh winds from the N on Thu morning, light winds from the NNW by Thu night). | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Sat morning, min 21°C on Fri night). Winds increasing (calm on Fri afternoon, strong winds from the N by Mon morning). | |||||||||||||||||||
Tue 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | ||||||||||||||
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 9 | SE 9 | ESE 9 | SE 9 | SE 9 | ESE 9 | ESE 8 | ESE 9 | ESE 11 | ESE 11 | ESE 14 | ESE 13 | ESE 12 | ESE 13 | ESE 13 | ESE 14 | ESE 14 | ESE 13 | E 11 |
Wave Graph  | ||||||||||||||||||||
 kJ | 202 | 178 | 112 | 96 | 79 | 79 | 65 | 223 | 254 | 359 | 444 | 2452 | 2177 | 2171 | 2940 | 2894 | 4007 | 3120 | 1793 | 265 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | off | off | cross-off | cross-off | cross-off |
High Tide | 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 | 3:42PM1.60m | 2:17AM1.53m | |||||||
Low Tide | 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 | 8:09AM0.65m | 9:15PM1.20m | ||||||||
 |  | |  |  |  | |  | | | | |  | |  | | | | |  | |
 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:47 | — | — | 5:48 | — | — |
 | 6:08 | — | — | 6:07 | — | — | 6:06 | — | — | 6:05 | — | — | 6:04 | — | — | 6:01 | — | — | 6:00 | — |
mm | 5 | 2 | 3 | 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 |
Temp °C | 26 | 24 | 24 | 22 | 22 | 25 | 25 | 22 | 26 | 26 | 23 | 27 | 26 | 24 | 26 | 26 | 24 | 27 | 26 | 25 |
Feels °C | 30 | 26 | 26 | 24 | 21 | 22 | 23 | 21 | 26 | 26 | 24 | 26 | 25 | 24 | 23 | 23 | 21 | 24 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 9 | ESE 9 | SE 9 | SE 9 | ESE 9 | ESE 8 | ESE 9 | ESE 11 | ESE 11 | ESE 14 | ESE 13 | ESE 12 | ESE 13 | ESE 13 | ESE 14 | ESE 14 | ESE 13 | E 11 |
| kJ | 202 | 178 | 112 | 96 | 79 | 79 | 65 | 223 | 254 | 359 | 444 | 2452 | 2177 | 2171 | 2940 | 2894 | 4007 | 3120 | 1793 | 265 |
Swell 2 Height (m) Direction Period (s) | E 13 | E 13 | E 12 | — | E 13 | E 12 | E 12 | — | — | S 10 | ESE 15 | S 9 | S 9 | S 8 | — | — | — | — | NNE 6 | S 9 |
| kJ | 14 | 12 | 3 | — | 3 | 3 | 3 | — | — | 2 | 188 | 6 | 6 | 6 | — | — | — | — | 15 | 2 |
Swell 3 Height (m) Direction Period (s) | S 6 | S 7 | E 14 | S 7 | S 7 | — | S 7 | — | — | E 18 | S 10 | — | — | S 8 | — | — | — | — | — | — |
| kJ | 1 | 1 | 4 | 1 | 1 | — | 1 | — | — | 6 | 7 | — | — | 6 | — | — | — | — | — | — |
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 5 | NNE 6 | N 6 | N 6 | N 6 |
| kJ | — | 1 | 4 | 10 | 26 | 24 | 41 | 4 | 2 | — | — | — | — | 10 | 42 | 48 | 50 | 34 | 141 | 18 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 64 | 64 | 0 | 0 | 0 | 0 | 18 | 64 | 0 | 64 | 64 | 64 | 64 | 77 | 77 |
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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