Ikumi Beach Surf Break

Lat Long: 33.53° N 134.28° E

Ikumi Beach Surf Forecast and Surf Report

Issued: 2 am 19 Aug 2026 (local time)

Forecast update in  hr  min

Today's Ikumi Beach sea temperature is
28.3° C
0.6° 

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


Ikumi Beach surf forecast from 19 Aug 2026:

  • Best quality surf: Tuesday 25 Aug, 9PM (local time) - 10ft (3.0m), 16s period, SSE swell with cross-offshore winds.
  • Most powerful swell: Wednesday 26 Aug, 9AM (local time) - 13ft (4.0m), 17s period, SSE swell with 10,349 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 19 Aug, 6PM (local time) - 2.5ft (0.7m), 7s period with ESE swell.

Best Forecast Surf Conditions for Ikumi Beach this week:

The surf forecast for Ikumi Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 19) at 6PM. The primary swell is predicted to be 0.7m and 7s period with a secondary swell of 0.4m and 10s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Ikumi Beach in the next 16 days are 4.0m 17s and forecast to arrive on Wednesday (Aug 26) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 11s period and expected on Sunday (Aug 23) at 12PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Wed 19th Aug)2.5ft (0.7m) 7s
Best Surf 9PM (Tue 25th Aug)10ft (3.0m) 16s
Most Powerful 9AM (Wed 26th Aug)13ft (4.0m) 17s

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


The Lowdown

Alright, Rusty here. Let’s get into it.

To be straight with you, the surf window for Ikumi Beach is pretty grim for the next week and a half. We’ve got a real dry spell, so don’t rush to wax your board just yet. The first few days are small, weak, and mostly glassy but the waves are just too ordinary to get excited about. The water is sitting at 83°, which is about average for this time of year, so no surprises there.

Wednesday the 19th and Thursday the 20th are tiny – we’re talking 2 ft and 1 ft from the ESE and SE, with periods around 8 to 10 seconds. The combined energy is weak, barely hitting 93 and 55. It’s glassy in the mornings, which is nice, but the swell is just too small to bother with. The afternoons get cross-on or cross winds, making it even worse.

Friday the 21st through Sunday the 23rd sees a slight bump to 3 ft from the S and SSW, with periods creeping up to 9-11 seconds. Energy gets into the moderate range, hitting 175 to 185. Still, the mornings are glassy, and the afternoons get messed up by cross-onshore winds. It’s surfable if you’re desperate, but nothing to write home about.

Monday the 24th is the first real glimmer. The morning glassy conditions with a 3 ft SSW swell, 11-second period, and energy of 263 (moderate) – that’s actually decent. The swell direction is a bit off, but the glassy wind makes it clean. This is the best of the first week, but it’s still only a small wave.

Then things get weird. Tuesday the 25th morning we get a 7 ft SE swell with a 16-second period, energy jumping to 2312. That’s a long-period groundswell, and it’s onshore wind. The period is so long that at a beach break like Ikumi, it might break too straight. Still, 7 ft with that period has power, but the wind is onshore, so it’s messy. Not a standout.

Wednesday the 26th is a total bomb – 13 ft to 15 ft of SSE swell, 16-17 second period, energy over 10,000. That is massive, but it’s way too big for Ikumi. The break can’t handle that size. It’s a warning sign, not a recommendation. The rest of the week stays huge, with 18 ft on Thursday the 27th, and heavy rain. This is for experts only, and even then, it’s pushing limits. The wind is cross-on or cross, so it’s choppy and dangerous.

Into the second week, the swell drops but stays big. Saturday the 29th has 7 ft from the S, 11-second period, but with risk of thunderstorms and cross-on wind. Not good. Sunday the 30th is 6 ft SSW, but windy and choppy.

The real standout, if you can wait, is Wednesday the 2nd of September. That morning we get a 5 ft S swell, 12-second period, with glassy conditions. Energy is 799 (moderate). The wind is dead calm, the swell is a good size, and the period is solid. This is the best on offer in the whole 16 days. Clean, punchy, and rideable. After that, it drops back to small stuff with cross winds.

So, to sum it up: the best window is the morning of Monday the 24th for a small clean wave, and the absolute standout is the morning of Wednesday the 2nd of September. That’s the one to mark on your calendar. The rest is either too small, too windy, or too big for this spot.

Rusty.

Short Range Forecast

Light rain (total 8mm), mostly falling on Wed afternoon. Warm (max 30°C on Thu morning, min 24°C on Wed night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 30°C on Sat morning, min 24°C on Mon night). Wind will be generally light.

Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
1
1
0
1
1
0
1
1
0
2
1
0
2
2
1
3
3
3
!
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.7
ESE
8
0.7
ESE
8
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.8
S
9
0.9
S
9
0.9
S
10
0.8
SSW
9
0.8
SSW
9
0.8
SSW
9
1
SSW
10
0.9
SSW
9
0.6
SSW
11
0.9
SSW
10
0.9
SSW
11
0.8
SE
16
1.4
SE
14
2.1
SE
16
1.6
SSE
17
3
SSE
16
Wave Graph
Metric surfscale
Energy kJ
56
51
29
25
34
99
127
145
110
110
106
179
121
84
157
186
352
833
2185
1480
5286
Wind (km/h)
5
ESE
10
SSE
5
SW
5
SE
10
S
5
WSW
5
ESE
10
S
5
W
5
SE
10
S
5
W
5
ESE
10
SSE
5
W
5
SE
10
SSE
5
WNW
5
E
10
ESE
5
N
Wind State
glassy
cross-on
glassy
glassy
cross
cross-off
glassy
cross
cross-off
glassy
cross-on
cross-off
glassy
cross-on
glassy
glassy
cross-on
glassy
on
on
glassy
High Tide
9:48AM1.68m
9:27PM1.81m
10:51AM1.55m
10:01PM1.74m
12:28PM1.45m
10:49PM1.66m
2:49PM1.47m
00:11AM1.59m
4:10PM1.59m
2:01AM1.59m
4:51PM1.70m
3:24AM1.68m
5:22PM1.79m
Low Tide
3:26PM0.93m
4:16AM0.59m
4:02PM1.10m
5:20AM0.63m
4:54PM1.26m
6:46AM0.65m
6:52PM1.37m
8:20AM0.60m
9:07PM1.34m
9:32AM0.51m
10:12PM1.22m
10:25AM0.41m
10:53PM1.08m
thunderstorm
thunderstorm
clear
part cloud
part cloud
clear
part cloud
thunderstorm
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:26
5:26
5:28
5:28
5:30
5:30
5:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:45
6:44
6:43
6:42
6:39
6:38
6:37
 mm
1
4
3
Temp °C
28
28
26
30
29
26
29
28
26
30
29
26
30
29
26
29
29
25
29
29
25
Feels °C
33
33
32
34
33
31
33
32
31
33
32
31
34
33
31
32
33
30
32
32
28
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Ikumi Beach:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Ikumi Beach surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


Information about the Ikumi Beach Surf forecast

The above surf forecast table for Ikumi Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Ikumi Beach can be found by selecting the local surf guide option on the grey menu. Our Ikumi Beach 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 (Ikumi Beach) 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 Ikumi Beach 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.

Ikumi Beach is 30 km (19 miles) from Muroto. If you plan a holiday in Shikoku, look for hotels and other accommodation in Muroto. Muroto has rooms for a wide range of budgets as well as car hire and transport links.

Nearest locationNearest