Ikumi Beach Surf Break

Lat Long: 33.53° N 134.28° E

Ikumi Beach Surf Forecast and Surf Report

Issued: 8 pm 24 Aug 2026 (local time)

Forecast update in  hr  min

Today's Ikumi Beach sea temperature is
28.8°C
1.1° 

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 24 Aug 2026:

  • Best quality surf: Tuesday 25 Aug, 9AM (local time) - 10ft (3.0m), 14s period, SSE swell with glassy winds.
  • Most powerful swell: Tuesday 25 Aug, 9AM (local time) - 10ft (3.0m), 14s period, SSE swell with 3,875 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 25 Aug, 3AM (local time) - 8ft (2.5m), 15s period with SSE 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 (Aug 25) at 3AM. The primary swell is predicted to be 2.5m and 15s period with a secondary swell of 1.5m and 18s. 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 3.0m 14s and forecast to arrive on Tuesday (Aug 25) at 9AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 10s period and expected on Thursday (Aug 27) at 9PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Tue 25th Aug)8ft (2.5m) 15s
Best Surf 9AM (Tue 25th Aug)10ft (3.0m) 14s
Most Powerful 9AM (Tue 25th Aug)10ft (3.0m) 14s

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


The Lowdown

Alright, this is Rusty. Let’s talk about what’s on offer for Ikumi Beach.

First up, the big picture: we’ve got a serious pulse of swell coming through, but it’s a tricky one for this spot. The wait for anything truly rideable is a long one. The first good window doesn’t open up until the morning of Thursday, 27 August, and even then, it’s modest. The standout action is going to be way later, around Sunday, 6 September and Monday, 7 September, but that’s for experienced surfers only.

Before that, the early part of the forecast is a write-off. Tuesday the 25th kicks off with a massive 9.8ft SSE swell (combined energy a whopping 4834), but it’s just too big for this break. The wind is glassy that morning, but the sheer size makes it a no-go. By the afternoon, it’s 8.2ft and cross-on, messy. The rest of that week fades into small, ordinary waves with poor conditions.

The first real chance comes on Thursday, 27 August morning. The swell drops to 3.6ft from the SSW, period is 11 seconds, and the wind is a clean cross-off. The combined energy is 487, so it’s a weaker pulse, but it’s your best bet for a clean, manageable session. It’s only a 2 out of 10, but the conditions are clean. That window is short-lived.

The next couple of days offer small, glassy mornings but nothing to get excited about. The swell is tiny, under 3.3ft, and the energy is weak.

Then we hit the real event. Sunday, 6 September – a massive 11.5ft to 13.1ft SSE swell arrives, with a very long period of 14 seconds and combined energy over 5000. This is a powerful, deep groundswell. The wind is light onshore, so the surface won’t be perfect, but the sheer size is there. This is only for experts. If you’re a beginner, do not even think about it.

The best chance for a good session for an experienced surfer comes on Monday, 7 September afternoon. The swell is still a solid 8.2ft from the SSE, period 11 seconds (energy 1833), but the wind switches to a light cross-off from the WSW, making it clean. The guidance says "excellent surf conditions for experienced surfers". That’s your true standout. The break is a beach, so with that long period you might get some straight lines, but the quality of the wave and the clean wind should make it worthwhile.

Before that, on Monday, 7 September morning, it’s 9.8ft with clean cross-off wind, but it’s likely too big for most.

After that, the surf drops off quickly into smaller, wind-affected junk by the 8th and 9th. The 9th morning has a tiny 3.0ft SE swell, clean wind, but it’s ordinary.

Bottom line: If you’re a confident surfer, pencil in the afternoon of Monday, 7 September for the best chance. If you’re a beginner, you’re looking at that Thursday the 27th morning for a small, clean wave. The rest of the window is a mix of too big, too small, or too windy.

Short Range Forecast

Some drizzle, heaviest during Wed morning. Warm (max 31°C on Tue afternoon, min 25°C on Mon night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 25mm), heaviest during Thu night. Warm (max 30°C on Fri morning, min 26°C on Thu night). Wind will be generally light.

Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
5
!
3
4
3
2
3
2
0
3
2
1
1
1
2
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)
2.4
SE
16
3
SSE
14
2.5
SSE
13
2.4
SSE
13
2
S
13
1.7
S
12
1.4
SSW
12
1.1
SSW
11
1.1
S
9
1.3
SSW
9
1.2
S
8
1
S
8
0.7
S
7
0.8
S
8
1.1
SSW
8
0.9
SSW
7
0.6
SSW
8
0.4
SE
10
0.5
SSW
8
Wave Graph
Metric surfscale
Energy kJ
2844
3875
2005
1828
1258
814
521
307
194
282
187
120
47
74
142
86
50
36
39
Wind (km/h)
5
W
5
S
10
S
5
W
10
S
15
SSW
10
WSW
10
SSW
15
SSW
10
WSW
5
WSW
10
SW
10
W
5
SE
5
SW
10
W
5
E
10
SSW
5
W
Wind State
glassy
glassy
cross-on
off
cross
cross
cross-off
cross-off
cross
cross-off
cross-off
cross-off
cross-off
glassy
cross-off
off
glassy
cross
glassy
High Tide
3:24AM1.68m
5:22PM1.79m
4:22AM1.80m
5:50PM1.85m
5:10AM1.91m
6:16PM1.90m
5:52AM1.99m
6:40PM1.94m
6:31AM2.03m
7:05PM1.95m
7:10AM2.03m
7:30PM1.95m
Low Tide
10:12PM1.22m
10:25AM0.41m
10:53PM1.08m
11:08AM0.34m
11:28PM0.93m
11:46AM0.31m
00:00AM0.79m
12:20PM0.32m
00:32AM0.66m
12:52PM0.37m
1:04AM0.56m
1:23PM0.47m
1:36AM0.48m
clear
clear
clear
clear
rain showers
part cloud
part cloud
cloud
part cloud
rain showers
thunderstorm
thunderstorm
part cloud
rain showers
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:31
5:31
5:31
5:33
5:33
5:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:38
6:37
6:37
6:36
6:34
6:32
6:31
 mm
1
9
2
3
1
3
3
1
3
2
Temp °C
26
30
31
26
31
31
27
30
31
27
30
29
27
30
30
27
30
30
26
Feels °C
31
33
35
31
34
34
32
34
34
32
35
33
32
34
36
32
35
35
31
  • Map Icons:
  • Break
  • 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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