Ikumi Beach Surf Break

Lat Long: 33.53° N 134.28° E

Ikumi Beach Surf Forecast and Surf Report

Issued: 2 pm 01 Sep 2026 (local time)

Forecast update in  hr  min

Today's Ikumi Beach sea temperature is
29.1°C
1.6° 

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 1 Sep 2026:

  • Best quality surf: Saturday 5 Sep, 6PM (local time) - 10ft (3.0m), 8s period, E swell with cross-shore winds.
  • Most powerful swell: Tuesday 8 Sep, 6AM (local time) - 15ft (4.5m), 11s period, SE swell with 4,595 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 1 Sep, 9PM (local time) - 3ft (0.9m), 8s period with S 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 Tuesday (Sep 01) at 9PM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.5m and 12s. 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 4.5m 11s and forecast to arrive on Tuesday (Sep 08) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 4s period and expected on Tuesday (Sep 08) at 3AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Tue 1st Sep)3ft (0.9m) 8s
Best Surf 6PM (Sat 5th Sep)10ft (3.0m) 8s
Most Powerful 6AM (Tue 8th Sep)15ft (4.5m) 11s

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


The Lowdown

Alright, Rusty here. Let's have a look at what's coming our way for Ikumi Beach.

First off, the water is a touch warmer than normal for this time of year, sitting at 84°F.

We've got a bit of a slow start. The first few days are a write-off, with poor conditions and no real surf to speak of. Tuesday through Thursday morning are all about small, weak, and messy waves. The combined energy barely gets going, with values like 144 (weak) on Tuesday. You're better off waiting.

Things start to get interesting from Thursday afternoon. We see a bump in energy, hitting 429 (moderate) with a 5ft SSE swell. The wind is cross, but the period is a short 10 seconds, so it's not going to be world-class. Friday brings a bigger swell, 6ft in the morning and 6ft in the afternoon, from the SSE. The energy is ramping up (657 to 709 - moderate), but the wind is cross and on Friday afternoon it's a moderate breeze with a cross-chop. It's a bit of a mess.

The real standout is the following Tuesday, the 8th of September. We've got a massive 15ft SE swell, with an incredible 11-second period. The combined energy is a whopping 4393 (strong) in the morning. The wind is glassy, completely calm. The problem is, this is way too big for Ikumi Beach. This is expert-only territory, and even then, it's predicted to be too big for the break. It's a spectacle to watch, not for a paddle.

After that, the swell stays big but the wind goes onshore and messy through the 10th and 11th, making it a total loss.

The next real chance for a decent surf comes on Saturday the 12th of September. The swell drops to 8ft from the SE, with an 11-second period, and the energy is still strong at 1302. The wind is glassy in the morning. This is excellent surf conditions for experienced surfers – the swell is over 8ft, so it's still big, but the glassy conditions will make it as clean as it gets. It's the best paddle-surfing option on offer.

Sunday the 13th is smaller, around 6ft, with a cross-onshore wind, so it's a step down. Monday the 14th sees a return to cleaner conditions with a 4ft SSE swell and glassy wind in the morning. That's a good, manageable size for a fun session.

The very end of the run, Tuesday the 15th, has a tiny 3ft swell with glassy conditions, and then a super-long period (16 seconds) 2ft swell. That long period is interesting, but the size is so small it's probably not going to do much at a beach break like Ikumi.

So, bottom line: for the next 16 days, the best bet is the glassy, big swell on Saturday the 12th of September. If you're an expert, that's your window. Everyone else, look at Monday the 14th for a cleaner, smaller session.

Rusty.

Short Range Forecast

Heavy rain (total 81mm), heaviest during Thu morning. Warm (max 30°C on Tue afternoon, min 22°C on Thu morning). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 129mm), heaviest during Fri night. Warm (max 28°C on Sat morning, min 21°C on Fri night). Mainly fresh winds.

Tue
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
1
0
1
2
2
1
2
2
1
0
1
0
2
1
0
!
1
3
!
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.5
E
12
0.9
S
8
1.1
SSE
9
1.1
SSE
9
1
S
8
1.2
SSE
8
1.4
SSE
10
2.1
SSE
10
1.9
SSE
9
1.7
SSE
9
1.3
ESE
8
1.1
SSW
10
1.4
ESE
8
1.9
ESE
9
2
ESE
8
2
ESE
9
3.5
E
10
2.1
ESE
8
2.2
ESE
9
3.5
SE
11
Wave Graph
Metric surfscale
Energy kJ
80
105
189
206
147
185
370
838
606
474
186
214
256
530
549
560
2309
636
777
3250
Wind (km/h)
10
SE
5
NNW
10
ENE
5
E
5
NE
15
NNW
10
NNE
10
NE
15
NE
25
NNE
20
NE
15
N
25
NE
10
NNE
15
NE
15
NE
15
NE
20
NNE
25
N
5
NW
Wind State
cross-on
glassy
cross-on
on
glassy
cross-off
cross
cross
cross
cross
cross-on
cross-off
cross
cross
cross
cross-on
cross
cross
cross-off
off
High Tide
8:20PM1.90m
9:13AM1.77m
8:48PM1.85m
10:06AM1.62m
9:18PM1.78m
11:21AM1.49m
9:56PM1.69m
1:30PM1.45m
10:59PM1.59m
3:29PM1.53m
1:00AM1.54m
4:18PM1.64m
2:46AM1.61m
Low Tide
2:49AM0.46m
2:53PM0.90m
3:32AM0.50m
3:25PM1.07m
4:25AM0.57m
4:05PM1.22m
5:39AM0.64m
5:24PM1.36m
7:18AM0.66m
8:15PM1.36m
8:48AM0.59m
9:40PM1.24m
clear
clear
thunderstorm
thunderstorm
thunderstorm
heavy rain
heavy rain
mod rain
light rain
heavy rain
heavy rain
rain showers
clear
part cloud
part cloud
cloud
mod rain
light rain
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:35
5:37
5:37
5:37
5:39
5:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:29
6:28
6:25
6:24
6:23
6:22
6:21
 mm
3
1
16
30
19
7
5
30
88
2
7
2
Temp °C
30
26
28
28
26
23
24
24
25
24
23
28
28
24
26
27
25
25
26
24
Feels °C
33
32
31
32
31
25
27
27
28
25
22
25
27
24
26
28
26
24
25
26
  • 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