Surf Forecasts:
Tainohama surf forecast from 30 Aug 2026:
- Best quality surf: Sunday 6 Sep, 3AM (local time) - 2.5ft (0.8m), 12s period, SE swell with cross-offshore winds.
- Most powerful swell: Sunday 6 Sep, 9AM (local time) - 5ft (1.5m), 13s period, SE swell with 778 kJ wave energy.
- Next surfable swell (1★+): Monday 31 Aug, 12AM (local time) - 3ft (0.9m), 7s period with SSW 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 Monday (Aug 31) at 12AM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.7m and 7s. Another secondary swell of 0.4m and 10s 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 1.5m 13s and forecast to arrive on Sunday (Sep 06) at 9AM. 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+) | 12AM (Mon 31st Aug) | 3ft (0.9m) 7s |
| Best Surf | 3AM (Sun 6th Sep) | 2.5ft (0.8m) 12s |
| Most Powerful | 9AM (Sun 6th Sep) | 5ft (1.5m) 13s |
Table - best surf conditions forecast for Tainohama over the next 16 days.
The Lowdown
Alright, let’s break it down. Rusty here, with the goods on Tainohama.
We’ve got a dry spell up front. From Sunday afternoon August 30th through Saturday morning September 5th, it’s pretty flat and messy. Tiny swell, onshore breezes – nothin’ worth paddlin’ out for. The water temp’s running a touch warmer than normal at 29°, about 2 degrees above average. Swell energy is weak, mostly under 200 (114 to 244). Just a waiting game.
Come Saturday morning September 5th, there’s a faint pulse. A 0.7m SSE swell with a 9-second period, and a light 5 km/h cross-offshore from the NE. It’s clean but tiny. More of a longboard cruise. The break is a reef, fairly consistent, but sometimes you’ll have company. Afternoon reverts to poor.
Then from Sunday the 6th to Tuesday the 8th, we get bigger swell – 1.5m to 1.9m on Monday the 7th morning – but the wind is cross-onshore at 20–30 km/h. Choppy and lumpy. Energy climbs into the thousands (1011–1248), but the quality’s not there.
Here’s the one to circle: Wednesday morning September 9th. Glassy conditions, zero wind, and a 2.5m ESE groundswell with a 13-second period. That’s a long-period groundswell – better shape, more energy, but longer lulls. At Tainohama’s reef, it’ll set up well, but 2.5m is expert territory. The energy reading is 2664 – plenty of punch.
Sunday afternoon September 13th is the real standout. A 5.0m SSW groundswell, 11-second period, with a light offshore from the north at 10 km/h. Clean, powerful, and dangerous. Energy is 6074 – that’s a serious amount of water moving. This is for experienced surfers only. Monday the 14th drops back to small stuff.
So, first week’s a bust. Second week has two real contenders: Wednesday 9th morning for clean, powerful groundswell, and Sunday 13th afternoon for a massive, glassy swell that’ll separate the men from the boys. Keep your eyes on the calendar.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Tue night. Warm (max 30°C on Sun afternoon, min 25°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 12mm), heaviest on Fri night. Warm (max 29°C on Wed afternoon, min 25°C on Sat morning). Wind will be generally light. | |||||||||||||||||||
Sun 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | ||||||||||||||
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) | SSW 7 | SSW 7 | S 9 | S 8 | SE 10 | ESE 13 | S 8 | S 8 | SSE 8 | SSE 8 | SSE 7 | SSE 7 | SE 7 | ESE 7 | ESE 9 | ESE 8 | ESE 8 | SE 9 | ESE 8 | SE 13 |
Wave Graph  | ||||||||||||||||||||
 kJ | 71 | 84 | 73 | 51 | 31 | 59 | 55 | 127 | 159 | 168 | 114 | 61 | 67 | 42 | 96 | 90 | 90 | 75 | 62 | 171 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross-on | cross-on | cross-on | on | on | cross-on | on | on | cross | on | on | glassy | cross-on | on | glassy | cross-off | cross-off | cross-off |
High Tide | 7:18PM1.94m | 7:38AM1.95m | 7:42PM1.92m | 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 | |||||||
Low Tide | 1:26AM0.48m | 1:41PM0.60m | 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 | ||||||||
 |  | | |  | | | |  | |  | | |  | | | | |  |  | |
 | — | — | 5:33 | — | — | 5:33 | — | — | 5:35 | — | — | 5:35 | — | — | 5:35 | — | — | 5:37 | — | — |
 | 6:30 | — | — | 6:29 | — | — | 6:28 | — | — | 6:27 | — | — | 6:25 | — | — | 6:23 | — | — | 6:22 | — |
mm | — | 2 | — | — | — | — | — | 3 | 3 | — | — | 1 | 1 | 1 | 1 | 1 | 4 | 3 | 6 | 15 |
Temp °C | 30 | 28 | 30 | 29 | 27 | 29 | 29 | 27 | 28 | 29 | 26 | 28 | 29 | 27 | 29 | 29 | 26 | 27 | 24 | 23 |
Feels °C | 33 | 33 | 33 | 31 | 31 | 30 | 30 | 31 | 32 | 31 | 30 | 32 | 32 | 33 | 33 | 32 | 31 | 31 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | SE 10 | S 7 | S 9 | S 8 | S 8 | S 8 | S 8 | S 8 | SSE 8 | SSE 8 | SSE 7 | SSE 7 | SE 7 | ESE 7 | ESE 9 | ESE 8 | ESE 8 | SE 9 | ESE 8 | ESE 8 |
| kJ | 37 | 51 | 73 | 51 | 31 | 32 | 55 | 127 | 159 | 168 | 114 | 61 | 67 | 42 | 96 | 90 | 90 | 75 | 62 | 90 |
Swell 2 Height (m) Direction Period (s) | SW 11 | SE 10 | SE 10 | SE 10 | SSW 9 | ESE 13 | ESE 12 | E 12 | E 11 | E 11 | ESE 11 | S 9 | SSW 9 | S 7 | S 8 | SSW 7 | SSE 7 | SSW 9 | SSW 10 | SE 13 |
| kJ | 4 | 38 | 25 | 25 | 31 | 59 | 52 | 70 | 61 | 58 | 37 | 39 | 46 | 22 | 32 | 18 | 18 | 46 | 56 | 171 |
Swell 3 Height (m) Direction Period (s) | E 11 | SW 9 | E 10 | SSW 10 | SE 10 | SE 9 | SE 9 | SE 10 | SE 10 | SE 11 | SSW 9 | ESE 10 | E 10 | SSW 8 | SW 10 | SW 10 | SW 10 | E 16 | SSE 8 | SSW 10 |
| kJ | 2 | 3 | 2 | 10 | 24 | 23 | 22 | 14 | 15 | 18 | 27 | 34 | 48 | 22 | 25 | 25 | 25 | 5 | 11 | 56 |
Wind waves Height (m) Direction Period (s) | SSW 7 | SSW 7 | SW 4 | SSW 3 | — | SSE 3 | — | — | — | — | — | — | — | — | — | S 8 | SSW 8 | S 8 | SSW 3 | SE 5 |
| kJ | 71 | 84 | 4 | 2 | — | 1 | — | — | — | — | — | — | — | — | — | 29 | 33 | 28 | 3 | 32 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 3 | 0 | 3 | 32 | 3 | 3 | 454 | 3 | 348 | 3 | 3 | 64 | 3 | 0 | 64 | 3 | 0 | 0 | 18 | 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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