Ikumi Beach Surf Break

Lat Long: 33.53° N 134.28° E

Ikumi Beach Surf Forecast and Surf Report

Issued: 8 pm 04 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 4 Sep 2026:

  • Best quality surf: Monday 7 Sep, 6PM (local time) - 5ft (1.6m), 9s period, SE swell with cross-offshore winds.
  • Most powerful swell: Sunday 6 Sep, 6PM (local time) - 8ft (2.5m), 10s period, ESE swell with 1,384 kJ wave energy.
  • Next surfable swell (1★+): Monday 7 Sep, 6PM (local time) - 5ft (1.6m), 9s period with SE 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 Monday (Sep 07) at 6PM. The primary swell is predicted to be 1.6m and 9s period with a secondary swell of 0.5m and 11s. Another secondary swell of 1.1m and 5s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Ikumi Beach in the next 16 days are 2.5m 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 1.1m 4s period and expected on Monday (Sep 07) at 12AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Mon 7th Sep)5ft (1.6m) 9s
Best Surf 6PM (Mon 7th Sep)5ft (1.6m) 9s
Most Powerful 6PM (Sun 6th Sep)8ft (2.5m) 10s

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


The Lowdown

Alright, let’s talk about Ikumi Beach. It’s gonna be a bit of a mixed bag, but there’s a real window of gold if you’re patient.

Right now, the surf is small and the wind is messy. We’ve got a weak 3ft swell from the south, combined energy is only 218, and the wind is cross-shore. It’s choppy and not worth paddling out for. The water temp is about average for this time of year, so nothing unusual there.

Saturday the 5th stays small and poor, with the wind turning cross-onshore. Sunday the 6th sees a jump in size – 6ft to 7ft – but it’s coming from the ESE, which isn’t ideal for this spot, and the wind is cross to cross-on. The combined energy climbs into the moderate range (519 to 984), but the conditions are still messy. Not the clean lines you want.

Monday the 7th and Tuesday the 8th stay marginal, with similar-sized swell, cross-shore winds, and that same ESE direction. The wave comment keeps saying “marginal” – it’s frustrating, but it’s not awful.

Wednesday the 9th and Thursday the 10th are still on the fence. The swell hangs around 4ft to 6ft, but the wind is cross-shore. The real change comes Friday the 11th morning. The wind goes glassy, and we get a 4ft SSE swell with a combined energy of 238. It’s clean, it’s glassy, and it’s surfable. That’s the first real standout – a small but fun morning session.

Now, the big one. Sunday the 13th afternoon, we get a 6ft easterly swell with a short period of 7 seconds, but the wind is glassy. The combined energy jumps to 638. That’s a solid afternoon session. But the real standout is Monday the 14th morning. 7ft from the east, period 9 seconds, glassy wind, and a combined energy of 1084. That’s strong, clean, and powerful. This is the best on offer – but at 7ft, it’s pushing into expert territory. Not for beginners.

Tuesday the 15th morning is still glassy with a 4ft ESE swell, but the energy drops. From Wednesday the 16th onwards, the surf fades fast. By Thursday the 17th, we’re down to 2ft, and by the weekend, it’s flat – 1.0ft or less. The last 10 days of the forecast are a barren run, with basically no surf worth mentioning.

So, if you’re keen, you’ve got a few clean windows: Friday the 11th morning for a small glassy session, Sunday the 13th afternoon for a punchy east swell, and Monday the 14th morning for the best, most powerful glassy conditions. After that, it’s a long wait.

Rusty

Short Range Forecast

Heavy rain (total 117mm), heaviest during Sun night. Warm (max 29°C on Mon afternoon, min 21°C on Fri night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 50mm), heaviest during Wed night. Warm (max 30°C on Tue morning, min 22°C on Wed night). Wind will be generally light.

Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
0
0
0
1
3
1
1
3
1
0
1
1
0
1
1
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1
SSW
10
1
S
9
0.8
SSW
9
1.1
ESE
7
1.8
ESE
9
2.2
ESE
10
2.1
ESE
11
1.8
SE
10
1.6
SE
10
1.6
SE
10
1.2
SE
10
1.1
SE
9
1.1
SE
9
1.1
SE
8
1.3
SSE
9
1.7
SSE
9
1.7
SSE
9
1.8
SSE
9
1.5
SSE
8
Wave Graph
Metric surfscale
Energy kJ
201
169
106
121
513
951
990
653
469
484
262
217
194
153
292
490
435
502
284
Wind (km/h)
15
NNE
15
NNE
15
NE
15
NNE
15
NE
20
NNE
25
N
25
NNE
15
NE
10
NNW
15
NNE
20
ENE
10
NNE
10
NNE
15
NNE
20
NNE
10
NNE
5
NNE
5
NNE
Wind State
cross
cross
cross-on
cross
cross-on
cross
cross-off
cross
cross-on
cross-off
cross
cross-on
cross
cross
cross
cross
cross
cross
glassy
High Tide
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
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
heavy rain
cloud
cloud
light rain
mod rain
heavy rain
heavy rain
light rain
part cloud
clear
clear
clear
light rain
mod rain
rain showers
heavy rain
heavy rain
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
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
14
2
9
26
65
1
3
6
2
21
18
Temp °C
22
24
25
24
24
23
24
26
29
25
30
30
26
25
27
24
23
24
24
Feels °C
23
26
27
25
26
24
23
28
30
27
31
31
29
28
29
25
26
27
27
  • 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 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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