Ikumi Beach Surf Break

Lat Long: 33.53° N 134.28° E

Ikumi Beach Surf Forecast and Surf Report

Issued: 2 am 04 Sep 2026 (local time)

Forecast update in  hr  min

Today's Ikumi Beach sea temperature is
29.5°C
2.1° 

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 3 Sep 2026:

  • Best quality surf: Sunday 6 Sep, 3PM (local time) - 11ft (3.5m), 10s period, E swell with cross-onshore winds.
  • Most powerful swell: Sunday 6 Sep, 6PM (local time) - 11ft (3.5m), 10s period, E swell with 2,850 kJ wave energy.
  • Next surfable swell (1★+): Sunday 6 Sep, 3PM (local time) - 11ft (3.5m), 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 3PM. The primary swell is predicted to be 3.5m and 10s period with a secondary swell of 2.3m and 10s. Another secondary swell of 0.3m and 9s is also forecast. The wind is predicted to be cross-onshore as the swell arrives.

The most powerful waves expected at Ikumi Beach in the next 16 days are 3.5m 10s and forecast to arrive on Sunday (Sep 06) at 6PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Saturday (Sep 05) at 3PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Sun 6th Sep)11ft (3.5m) 10s
Best Surf 3PM (Sun 6th Sep)11ft (3.5m) 10s
Most Powerful 6PM (Sun 6th Sep)11ft (3.5m) 10s

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


The Lowdown

Alright, folks, Rusty here. Let's have a look at what the next couple of weeks have in store for us.

Right off the bat, I gotta be straight with you: the start of this forecast is a bit of a grind. For the first several days, through the 5th, the surf is small, a touch on the messy side with these cross-shore breezes, and just not worth getting too excited about. We're looking at chest-high walls at best, and the conditions are doing them no favors. It's the kind of stretch where you check the cam, sigh, and find something else to do.

Now, the real story of this period is the middle of next week, and it's a serious one. Mark your calendar for Wednesday the 9th. There's a solid groundswell filling in, with sets coming in at a solid 8ft to 10ft. The energy is strong, with readings hitting 1306 and then even 1755. This is a powerful swell, the kind that gets the heart pumping. The morning is looking glassy, just perfect. The afternoon, there's a note that this might be pushing the limits for Ikumi. With swell that size, this is strictly for the experienced crew. If you have any doubts, sit this one out and watch from the sand, because this is serious power. The energy is huge, but that's what makes it a standout.

The day before, on the 9th, it's not surfable, but Wednesday is the one clear standout. Thursday the 10th starts off with some glassy conditions and a smaller 4ft swell, a much more manageable size if the 10ft monster from the day before was too much. But that clean window is short-lived, as a storm front moves in that afternoon and ruins the party.

The following week, after that big pulse, things just sort of fizzle out. We've got a run of messy, cross-onshore days with junky swell, and it's hard to find a real window. The 13th and 14th show some increased size, back up around 5ft to 6ft, but the wind is just poor, making it lumpy and close. It looks like it's back to the drawing board for that week. There's a tiny, clean moment on the morning of the 17th, but the swell is barely a ripple. It’s a frustrating run to end the period, but that’s how it goes sometimes.

So, the bottom line: don't waste your energy this weekend. Save it all for that big, glassy Wednesday the 9th. That is your one true standout on the menu.

Rusty, signing off.

Short Range Forecast

Heavy rain (total 116mm), heaviest during Fri afternoon. Warm (max 27°C on Sun morning, min 21°C on Fri afternoon). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 68mm), heaviest during Wed night. Warm (max 27°C on Wed morning, min 22°C on Mon night). Wind will be generally light.

Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
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
1
1
1
0
0
!
3
1
2
2
1
1
1
1
1
1
1
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.5
S
10
1.4
S
10
1.1
S
10
1
S
9
0.9
SSW
9
1.4
ESE
7
1.8
ESE
8
3.5
E
10
2.3
ESE
10
1.6
SE
9
1.6
SE
9
1.1
SE
9
0.9
S
10
1.3
SE
9
1.3
SE
9
1.2
SE
9
1.1
SE
9
1.2
SSE
8
0.9
SE
8
0.9
SSE
8
0.8
SSE
8
Wave Graph
Metric surfscale
Energy kJ
408
362
221
173
135
203
424
2309
1130
423
414
190
165
278
281
235
168
188
109
101
64
Wind (km/h)
10
NE
20
NNE
15
NE
15
NNE
15
NE
20
NE
20
NE
15
ENE
15
NNE
15
NNE
15
NNE
15
NNE
10
NE
10
NE
10
NNE
10
NNE
10
NNE
15
NNE
5
N
5
SSW
10
SSW
Wind State
cross-on
cross
cross
cross
cross
cross
cross-on
cross-on
cross
cross
cross
cross-off
cross
cross
cross
cross
cross
cross
cross-off
cross
cross-off
High Tide
11:21AM1.49m
9:56PM1.69m
1:30PM1.45m
10:59PM1.59m
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
Low Tide
4:05PM1.22m
5:39AM0.64m
5:24PM1.36m
7:18AM0.66m
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
thunderstorm
heavy rain
heavy rain
part cloud
part cloud
light rain
cloud
light rain
cloud
mod rain
mod rain
rain showers
light rain
light rain
rain showers
rain showers
light rain
heavy rain
heavy rain
thunderstorm
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:37
5:37
5:39
5:39
5:39
5:41
5:41
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:24
6:23
6:22
6:21
6:20
6:17
6:16
 mm
17
65
31
2
1
8
6
14
5
1
6
5
5
18
11
11
14
Temp °C
25
22
22
25
26
24
27
26
25
24
24
23
24
25
25
27
26
25
24
25
26
Feels °C
29
22
24
26
27
25
27
28
26
26
26
24
27
28
28
31
30
28
28
29
29
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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 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.

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