Tainohama Surf Break

Lat Long: 33.74° N 134.57° E

Tainohama Surf Forecast and Surf Report

Issued: 8 am 26 Aug 2026 (local time)

Forecast update in  hr  min

Today's Tainohama sea temperature is
28.7°C
1.0° 

Tainohama surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Tainohama surf forecast from 26 Aug 2026:

  • Best quality surf: Friday 28 Aug, 6PM (local time) - 3.5ft (1.1m), 7s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Wednesday 2 Sep, 12PM (local time) - 11ft (3.5m), 15s period, SSE swell with 5,839 kJ wave energy.
  • Next surfable swell (1★+): Friday 28 Aug, 3PM (local time) - 3ft (0.9m), 8s 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 Friday (Aug 28) at 3PM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.7m and 8s. Another secondary swell of 0.2m 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 3.5m 15s and forecast to arrive on Wednesday (Sep 02) at 12PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 6s period and expected on Sunday (Aug 30) at 9PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Fri 28th Aug)3ft (0.9m) 8s
Best Surf 6PM (Fri 28th Aug)3.5ft (1.1m) 7s
Most Powerful12PM (Wed 2nd Sep)11ft (3.5m) 15s

Table - best surf conditions forecast for Tainohama over the next 16 days.


The Lowdown

Alright, let's get into it. Tainohama is a reef break that demands respect, and right now, it’s a story of two very different halves across this 16-day window.

We kick things off on Wednesday, the 26th of August, with some energy, but the conditions just aren’t there. Wednesday morning has a solid 7ft south swell (1044 combined energy), but that cross-on wind from the SSW at 9 mph is chopping it up, making things rough. The water is a warm 84°, which is a touch above average for this time of year, but it doesn't save the surf. The afternoon gets even messier with choppier conditions. Thursday and the rest of that first week are a write-off – we're looking at lumpy, choppy seas with wind tearing through. There's a brief moment on Friday morning the 28th with a tiny 3ft south-southwest swell and glassy conditions, but it’s really weak, with only 195 combined energy. Not worth paddling out for.

The real story, and the best bet on offer, is a big, powerful, and very long-period south swell that arrives around the 1st of September. The standout session looks to be Tainohama on Tuesday morning, September 1st. That’s a serious 4ft south swell but with a period of 17 seconds – that’s groundswell with some serious grunt – and 1066 combined energy. It will be offering proper, lined-up reef waves. The catch is the cross-on wind from the ESE at 9 mph will still be messy, but the potential is there.

From the 2nd of September onwards, things go nuts. Wednesday the 2nd sees a massive 12ft to 13ft south-southeast swell, with wave energy peaking at a staggering 7907 on the afternoon. That is expert territory only, and the onshore wind will be howling. This kind of size and power carries right through to the 7th of September, with huge swells in the 10-13ft range, but the wind stays on-it throughout, which at this break will create ugly, dangerous conditions for anyone other than the most seasoned charger.

The window starts to clean up on Tuesday the 8th of September. That morning sees the swell drop to a manageable 5ft from the southeast (503 combined energy), and for the first time in a while, we get glassy conditions. This is your second highlight – a clean, fun-sized morning at Tainohama. It’s the best quality you’ll see in the whole run.

After the 8th, the energy fades fast. The 9th and 10th of September drop right back to tiny, weak surf with poor winds, signaling the end of the run.

So, to sum it up: the first week is a complete dud. The second week is where the action is, but it’s almost all big, raw, and wind-affected. The two true standouts are the long-period south swell on the morning of September 1st for size and power, and the clean, glassy morning on September 8th for quality. Don't bother before then.

Rusty.

Short Range Forecast

Light rain (total 8mm), mostly falling on Fri morning. Warm (max 31°C on Thu morning, min 25°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 38mm), heaviest during Sat afternoon. Warm (max 30°C on Sun morning, min 26°C on Sat night). Wind will be generally light.

Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
0
1
0
0
0
0
1
1
1
0
0
1
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2
S
11
1.6
S
11
1.2
SSW
11
1.1
SSE
9
1
SSE
10
1.1
S
9
0.9
SSW
8
0.9
SSW
8
0.8
S
7
0.9
SSW
7
0.9
SSW
7
1
SSW
7
0.8
SSW
6
0.7
S
7
0.4
S
12
0.7
S
10
0.6
S
10
0.6
S
12
0.9
S
13
1.4
S
15
2.3
S
16
Wave Graph
Metric surfscale
Energy kJ
1006
640
308
180
179
198
116
94
69
97
94
108
45
52
46
98
67
102
276
835
2576
Wind (km/h)
15
SSW
25
S
15
SW
20
SSW
25
SSW
20
SW
10
SSW
5
N
5
WNW
5
ENE
10
SSE
5
WSW
0
SE
10
S
10
SSW
10
S
15
SSE
15
ESE
25
SE
30
SE
35
SSE
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
glassy
glassy
glassy
on
cross
glassy
cross-on
cross-on
on
on
cross-on
cross-on
on
on
High Tide
5:43PM1.86m
5:06AM1.93m
6:07PM1.91m
5:46AM2.00m
6:31PM1.94m
6:23AM2.03m
6:55PM1.95m
7:00AM2.02m
7:18PM1.94m
7:38AM1.95m
7:42PM1.92m
8:17AM1.84m
8:07PM1.88m
Low Tide
11:05AM0.31m
11:22PM0.88m
11:40AM0.28m
11:52PM0.74m
12:12PM0.30m
00:23AM0.62m
12:43PM0.37m
00:54AM0.53m
1:12PM0.47m
1:26AM0.48m
1:41PM0.60m
2:00AM0.46m
2:09PM0.76m
2:38AM0.48m
part cloud
part cloud
clear
part cloud
part cloud
part cloud
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
clear
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:30
5:31
5:31
5:31
5:33
5:33
5:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:36
6:35
6:32
6:31
6:30
6:29
6:28
 mm
2
4
2
1
6
4
1
4
8
1
13
13
10
24
Temp °C
30
30
27
31
31
27
30
27
26
29
29
27
30
29
26
29
29
27
27
27
27
Feels °C
32
31
31
32
32
30
35
33
31
33
33
32
34
33
30
31
31
28
29
28
27
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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