Tainohama Surf Break

Lat Long: 33.74° N 134.57° E

Tainohama Surf Forecast and Surf Report

Issued: 8 am 17 Aug 2026 (local time)

Forecast update in  hr  min

Today's Tainohama sea temperature is
28.3° C
0.7° 

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


Tainohama surf forecast from 17 Aug 2026:

  • Best quality surf: Friday 21 Aug, 6AM (local time) - 3ft (0.9m), 9s period, S swell with glassy winds.
  • Most powerful swell: Friday 21 Aug, 6PM (local time) - 4ft (1.2m), 10s period, S swell with 308 kJ wave energy.
  • Next surfable swell (1★+): Friday 21 Aug, 6AM (local time) - 3ft (0.9m), 9s 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 Friday (Aug 21) at 6AM. The primary swell is predicted to be 0.9m and 9s period with a secondary swell of 0.4m and 11s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Tainohama in the next 16 days are 1.2m 10s and forecast to arrive on Friday (Aug 21) at 6PM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Fri 21st Aug)3ft (0.9m) 9s
Best Surf 6AM (Fri 21st Aug)3ft (0.9m) 9s
Most Powerful 6PM (Fri 21st Aug)4ft (1.2m) 10s

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


The Lowdown

Alright, let’s break it down. The next couple of weeks look mostly flat and messy at Tainohama, but there are a couple of days that’ll get the blood pumping if you’re brave.

Right now and for the next several days, it’s a write-off. Onshore winds from the SSE and S, tiny weak swell, and energy numbers well under 200 (139, 81, 61...). Nothing worth paddling out for. That stretch runs all the way to Monday, August 24th.

Monday August 24th brings a jump in size – 6ft in the morning up to 8ft in the afternoon – with a 17-second period, which is a very long period groundswell from the SE. Energy jumps to 2235 and 3154, so there’s real power. But the wind is cross-onshore from the SSW at 12 mph, and the reef prefers S swell, so the quality is marginal. Big and raw, not clean.

Tuesday August 25th morning is the standout. Glassy conditions, 12ft SSE swell at 16 seconds – very long period. That’s a massive groundswell and the direction is close enough to the reef’s optimum. Energy is a huge 5383. Wind is light out of the east at 3 mph, so it’s glassy. This is exceptional surf, but only for experts. 12ft is way too big for beginners, and intermediates will be out of their depth. Crowds are ‘sometimes’ so you might see a few, but on a Tuesday it shouldn’t be a zoo. The afternoon gets a little bumpy, but the morning is the session.

Wednesday August 26th morning stays clean with 12ft SSE swell at 14 seconds and light southerly winds (3 mph, onshore). Still huge, still expert-only. The afternoon gets windier and drops to 10ft.

Thursday August 27th holds 10ft from the SE but the period drops to 10 seconds. Still big, but quality drops with onshore winds and shorter period.

Saturday August 29th morning is a solid option – glassy, calm, 8ft SSW swell at 13 seconds. Energy is 2804, still strong. That’s a clean, powerful swell for experienced surfers. Crowds are ‘sometimes’ so you might have it to yourself.

Then Monday September 1st morning brings a massive 13ft SE swell with a 17-second period. Energy is 8968 – very strong. Winds are light onshore from the south at 6 mph. That’s a huge, long-period groundswell, expert-only. The afternoon jumps to 16ft and 16 seconds (14178 energy) with a gentle cross-onshore, so it’s still very big and a bit bumpy. Another standout for the big-wave crew.

Water temp at the start is 83°F, about 1°F above normal – nothing wild, just a warm summer sea.

Overall, the real quality is on the 25th morning and the 31st morning. Everything else is either too small and windy or too big and bumpy. Experts have two good windows. Everyone else, maybe sit this one out.

Rusty.

Short Range Forecast

Moderate rain (total 10mm), heaviest on Mon night. Warm (max 29°C on Mon afternoon, min 25°C on Tue night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 3mm), mostly falling on Thu morning. Warm (max 29°C on Fri afternoon, min 25°C on Thu night). Wind will be generally light.

Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
1
1
0
1
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)
0.9
SE
5
0.6
E
9
0.4
SE
11
0.9
SE
5
0.9
ESE
5
0.4
SE
10
0.7
ESE
8
0.7
ESE
8
0.4
SE
10
0.4
SE
10
0.7
S
9
0.9
S
9
1
S
9
1.2
S
10
1.1
S
10
1
S
10
1
S
10
0.8
SSW
9
0.7
SSW
9
0.7
SSW
9
0.7
SSW
9
Wave Graph
Metric surfscale
Energy kJ
45
60
30
32
45
27
55
50
25
25
80
123
157
302
240
188
184
113
84
84
80
Wind (km/h)
15
SSE
15
S
10
SSE
15
SSE
20
S
10
SSE
10
SSE
15
S
10
S
10
SSE
15
S
5
S
10
S
15
S
10
SSW
10
S
20
S
10
SW
15
S
20
S
10
SW
Wind State
on
on
on
on
on
on
on
on
on
on
cross-on
cross-on
on
on
cross-on
on
cross-on
cross-on
cross-on
on
cross-on
High Tide
8:18PM1.88m
8:47AM1.76m
8:45PM1.83m
9:37AM1.62m
9:13PM1.77m
10:45AM1.47m
9:48PM1.69m
12:49PM1.39m
10:41PM1.61m
3:26PM1.47m
00:26AM1.55m
4:19PM1.60m
2:18AM1.59m
Low Tide
2:11PM0.61m
2:35AM0.56m
2:40PM0.78m
3:17AM0.58m
3:10PM0.96m
4:09AM0.63m
3:44PM1.13m
5:20AM0.68m
4:37PM1.30m
7:01AM0.68m
7:27PM1.39m
8:35AM0.60m
9:25PM1.30m
rain showers
rain showers
rain showers
thunderstorm
part cloud
part cloud
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
part cloud
part cloud
clear
clear
clear
part cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:24
5:24
5:24
5:26
5:26
5:26
5:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:46
6:45
6:44
6:43
6:42
6:40
6:39
 mm
2
1
5
2
2
1
Temp °C
27
29
26
27
28
26
28
28
26
28
28
26
28
29
26
29
28
26
29
28
26
Feels °C
30
31
29
30
30
30
30
30
30
32
31
30
32
32
30
31
30
30
31
29
30
  • Map Icons:
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  • 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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