Ikumi Beach Surf Break

Lat Long: 33.53° N 134.28° E

Ikumi Beach Surf Forecast and Surf Report

Issued: 2 am 06 Sep 2026 (local time)

Forecast update in  hr  min

Today's Ikumi Beach sea temperature is
29.4°C
2.0° 

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 6 Sep 2026:

  • Best quality surf: Sunday 6 Sep, 9PM (local time) - 13ft (4.0m), 10s period, E swell with cross-shore winds.
  • Most powerful swell: Sunday 6 Sep, 9PM (local time) - 13ft (4.0m), 10s period, E swell with 2,959 kJ wave energy.
  • Next surfable swell (1★+): Sunday 6 Sep, 9PM (local time) - 13ft (4.0m), 10s period with E 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 Sunday (Sep 06) at 9PM. The primary swell is predicted to be 4.0m and 10s period with a secondary swell of 3.0m and 9s. Another secondary swell of 0.2m and 9s is also forecast. The wind is predicted to be cross-shore as the swell arrives.

The most powerful waves expected at Ikumi Beach in the next 16 days are 4.0m 10s and forecast to arrive on Sunday (Sep 06) at 9PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Monday (Sep 07) at 12AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Sun 6th Sep)13ft (4.0m) 10s
Best Surf 9PM (Sun 6th Sep)13ft (4.0m) 10s
Most Powerful 9PM (Sun 6th Sep)13ft (4.0m) 10s

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


The Lowdown

Alright, grab a coffee and listen up. This is Rusty, and I’m looking at the next couple of weeks for us. To be straight with you, the first few days are a bit of a write-off. We’ve got a solid, but messy, 7ft swell from the ESE rolling in on Sunday, but it’s arriving with a 12 mph cross-shore wind and heavy rain. The water is a touch warmer than usual at 85°, about 2° above average for this time of year, but that doesn’t help the chop. The combined energy is moderate (779), but the conditions are just too rough to get excited about. It’s a “marginal surf” call, so I’d save your energy.

The real window opens up on Monday the 7th. The morning is your best bet. We’ve got a 6ft SE swell, with a clean cross-offshore breeze from the north at 9 mph. The energy is still moderate (596), but the wind is making it much cleaner. The swell period is a decent 9 seconds, so there’s some shape to it. This is the standout for the first week. The afternoon will turn messy with a cross-on wind, so get it early.

Tuesday the 8th sees a drop in size to 4ft, with a light cross-shore breeze. The energy is moderate (414), but the period drops to 8 seconds, making it a bit weak. It’s an option for the morning if you’re desperate, but not a highlight.

Wednesday the 9th is a tough one. The swell jumps back up to 7ft, and the energy is moderate (694), but there’s a risk of thunderstorms and a light cross-shore wind. The afternoon sees it hit 8ft, which is starting to get into expert territory, especially with a cross-on wind. The combined energy is getting close to strong (978), but the conditions are still “marginal.” This setup is more interesting for kite surfing than paddle surfing.

The best of the whole run, by a long shot, is Saturday the 19th. After a real dry spell, the morning brings a 4ft S swell, glassy conditions with a light offshore from the northwest, and the energy is moderate (559). The period is a solid 9 seconds. This is clean, lined up, and the best you’ll see in the whole 16-day window. The afternoon stays glassy with a 4ft S swell, but the period drops to 8 seconds. It’s still a good session, but the morning is the standout.

There’s a long gap between the 10th and the 19th where the surf is small, weak, or messy. The wave energy drops to weak values (under 100) for a few days, and the winds are mostly cross-on. It’s a stretch of “poor” or “marginal” calls. The 14th (Monday) afternoon shows a spike in energy to 1212 (strong) with a 7ft ESE swell, but the wind is a light cross-on, and the period is 10 seconds. It’s a “marginal” call, so it’s a gamble. The 16th (Wednesday) morning is glassy but only 3ft, so it’s a grovel session.

The 18th (Friday) afternoon shapes up nicely with a 4ft S swell and a clean cross-offshore breeze. The combined energy is moderate (363). It’s a solid option for the end of the week.

So, to boil it down: You’re looking at Monday the 7th morning for the first decent window, and then Saturday the 19th morning is the absolute best of the bunch. That’s the one to circle on the calendar. For the rest, keep your expectations low, and always check the wind before you paddle out.

Catch you in the lineup.
Rusty.

Short Range Forecast

Heavy rain (total 91mm), heaviest during Sun afternoon. Warm (max 29°C on Mon afternoon, min 23°C on Sun morning). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 36mm), heaviest during Wed morning. Warm (max 28°C on Thu morning, min 24°C on Wed night). Wind will be generally light.

Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
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
1
2
3
0
1
1
2
2
2
2
3
2
0
1
0
0
1
0
1
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.2
ESE
9
2.1
ESE
9
2.1
E
9
1.8
SE
9
1.6
SE
9
1.3
SE
9
1
S
10
1.3
S
10
1.6
S
9
2.1
SSE
9
2.5
SSE
9
1.8
SSE
9
1.3
SSE
8
1.2
SSE
8
1
SSE
8
0.9
SSE
7
0.8
SSE
7
0.9
SSE
8
0.7
SSE
8
0.8
SSE
10
1.1
S
11
Wave Graph
Metric surfscale
Energy kJ
753
739
723
577
412
262
191
299
422
645
947
508
212
171
120
86
62
94
68
123
289
Wind (km/h)
20
NE
20
NE
15
NNE
15
N
15
NE
15
NNE
10
NE
10
NE
10
NE
10
NE
5
E
5
SSE
10
SW
10
SSW
5
ENE
5
ENE
10
ENE
5
N
5
ENE
10
E
5
N
Wind State
cross
cross
cross
cross-off
cross-on
cross
cross
cross
cross
cross
cross-on
glassy
cross-off
cross
glassy
cross-on
cross-on
glassy
cross-on
on
glassy
High Tide
3:29PM1.53m
1:00AM1.54m
4:18PM1.64m
2:46AM1.61m
4:50PM1.74m
3:53AM1.73m
5:17PM1.81m
4:44AM1.86m
5:43PM1.87m
5:27AM1.96m
6:07PM1.91m
6:07AM2.02m
6:32PM1.94m
Low Tide
8:15PM1.36m
8:48AM0.59m
9:40PM1.24m
9:50AM0.50m
10:25PM1.08m
10:37AM0.43m
11:00PM0.91m
11:16AM0.39m
11:31PM0.75m
11:51AM0.38m
00:02AM0.61m
12:23PM0.42m
00:34AM0.49m
heavy rain
heavy rain
heavy rain
rain showers
rain showers
part cloud
light rain
cloud
rain showers
thunderstorm
thunderstorm
heavy rain
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
clear
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:39
5:39
5:39
5:41
5:41
5:41
5:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:22
6:21
6:20
6:17
6:16
6:15
6:14
 mm
29
37
16
1
1
1
6
6
8
11
4
4
1
1
1
Temp °C
23
23
24
28
29
26
28
27
26
27
27
26
28
28
25
27
26
25
28
28
25
Feels °C
24
24
26
30
32
29
31
31
31
32
32
30
32
33
30
32
30
29
31
32
29
  • 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