Surf Forecasts:
Ikumi Beach surf forecast from 23 Jul 2026:
- Best quality surf: Friday 24 Jul, 3AM (local time) - 1ft (0.3m), 18s period, SE swell with glassy winds.
- Most powerful swell: Saturday 25 Jul, 3AM (local time) - 1.5ft (0.4m), 16s period, SE swell with 94 kJ wave energy.
- Next surfable swell (1★+): Friday 24 Jul, 3AM (local time) - 1ft (0.3m), 18s 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 Friday (Jul 24) at 3AM. The primary swell is predicted to be 0.3m and 18s period with a secondary swell of 0.3m and 10s. 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 0.4m 16s and forecast to arrive on Saturday (Jul 25) at 3AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Tuesday (Jul 28) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Fri 24th Jul) | 1ft (0.3m) 18s |
| Best Surf | 3AM (Fri 24th Jul) | 1ft (0.3m) 18s |
| Most Powerful | 3AM (Sat 25th Jul) | 1.5ft (0.4m) 16s |
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 on offer for Ikumi Beach.
Right off the bat, it’s a slow start. There’s a long stretch of small, weak surf from Friday the 24th through to the end of July. The swell is tiny, around 1ft to 2ft, mostly from the southeast, with a period that drops from 18 seconds down to 10 seconds. The energy is weak, sitting between 55 and 175 (moderate wave energy), so it’s just not moving much water. The winds are light, often glassy, which is a major positive for clean conditions, but there just isn’t enough swell to do anything with. The water temperature is about average for the time of year.
Then, on Sunday the 2nd of August, things start to wake up. The swell pushes to 2ft from the SSW, with a period of 14 seconds, and the energy jumps to 252 (moderate wave energy). The morning is glassy, and the forecast says expect good surf conditions. This is the first real sign of life.
Monday the 3rd of August morning is the first standout. The swell comes up to 4ft from the SSW, period 14 seconds, energy hitting 677 (strong to very strong wave energy). The wind is glassy, so the waves will be clean. This is a solid groundswell that will offer some proper shape, but it’s getting a bit punchy for beginners.
The real highlight, though, is the morning of Wednesday the 5th of August. We’ve got 8ft of ESE swell, period 16 seconds, and the energy is through the roof at 2817 (strong to very strong wave energy). The wind is glassy, and the conditions are marked as excellent for experienced surfers. This is the best on offer in the whole period – a proper, powerful, long-period groundswell with clean conditions. It’s a big swell, so only for the experienced crew.
The following days, Thursday the 6th and Friday the 7th, the swell gets huge, 12ft to 13ft, with periods up to 18 seconds and energy over 10,000 (very strong wave energy). The wind is light and favorable, but the swell is predicted to be too big for this break. That’s expert-only territory, if it’s even rideable here.
Finally, Saturday the 8th of August morning sees a drop back to a more manageable 5ft from the east, period 14 seconds, with energy at 906 (strong to very strong wave energy) and glassy winds. It’s a very good option to end the run.
So, the best surf is on Wednesday the 5th of August morning for the experienced surfers, and Monday the 3rd of August morning is a strong runner-up.
Rusty.
Short Range ForecastModerate rain (total 12mm), heaviest on Sun afternoon. Warm (max 32°C on Fri morning, min 27°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 17mm), heaviest on Mon afternoon. Warm (max 31°C on Mon morning, min 25°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | ||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | SE 18 | SE 18 | SE 18 | SE 16 | SE 16 | SE 16 | SE 16 | SE 15 | SE 15 | SE 14 | SE 14 | SE 14 | SE 14 | ESE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 50 | 49 | 49 | 42 | 91 | 90 | 87 | 78 | 76 | 74 | 72 | 70 | 65 | 67 | 49 | 48 | 48 | 48 | 47 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | cross | cross-off | glassy | cross | glassy | cross-on | cross | cross-off | glassy | glassy | cross-off | glassy | on | glassy | cross-on | glassy | glassy |
High Tide | 11:56PM1.65m | 2:51PM1.48m | 1:04AM1.64m | 4:14PM1.58m | 2:19AM1.65m | 5:07PM1.68m | 3:26AM1.71m | 5:45PM1.78m | 4:23AM1.79m | 6:19PM1.84m | 5:12AM1.87m | 6:49PM1.89m | |||||||
Low Tide | 7:28AM0.61m | 7:28PM1.27m | 8:44AM0.52m | 9:06PM1.29m | 9:47AM0.40m | 10:15PM1.24m | 10:39AM0.30m | 11:05PM1.16m | 11:23AM0.22m | 11:45PM1.06m | 12:03PM0.18m | 00:21AM0.96m | |||||||
 |  |  | | | |  | |  | |  | | |  | | | | | | |
 | — | 5:07 | — | — | 5:09 | — | — | 5:09 | — | — | 5:11 | — | — | 5:11 | — | — | 5:11 | — | — |
 | 7:08 | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:05 | — |
mm | — | — | 2 | — | — | 1 | 2 | 1 | 6 | 1 | — | 7 | — | 1 | 6 | — | — | 2 | — |
Temp °C | 29 | 32 | 32 | 29 | 32 | 32 | 28 | 31 | 30 | 27 | 31 | 29 | 27 | 29 | 29 | 27 | 30 | 29 | 26 |
Feels °C | 34 | 36 | 37 | 34 | 36 | 36 | 33 | 35 | 35 | 31 | 35 | 34 | 32 | 34 | 34 | 32 | 34 | 34 | 30 |
Swell 1 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 9 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 11 | S 8 | S 8 | S 9 | S 9 | ESE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 |
| kJ | 16 | 23 | 14 | 41 | 40 | 35 | 48 | 50 | 55 | 50 | 47 | 55 | 54 | 67 | 49 | 48 | 48 | 48 | 47 |
Swell 2 Height (m) Direction Period (s) | SSW 3 | SE 18 | SE 18 | SE 16 | SE 16 | SE 16 | SE 16 | SE 15 | S 9 | SE 11 | SE 10 | SE 10 | SE 10 | S 8 | S 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 |
| kJ | 1 | 49 | 49 | 42 | 91 | 90 | 87 | 78 | 39 | 40 | 51 | 50 | 50 | 36 | 35 | 22 | 22 | 21 | 12 |
Swell 3 Height (m) Direction Period (s) | SE 18 | SSW 4 | SE 12 | SW 4 | S 8 | S 8 | SSW 8 | S 9 | SE 15 | SE 14 | SE 14 | SE 14 | SE 14 | SE 14 | SE 13 | SE 13 | SSW 5 | SE 13 | SE 12 |
| kJ | 50 | 1 | 21 | 1 | 5 | 5 | 11 | 26 | 76 | 74 | 72 | 70 | 65 | 29 | 28 | 27 | 4 | 26 | 24 |
Wind waves Height (m) Direction Period (s) | SW 3 | N 2 | — | SW 4 | — | NE 3 | — | NNE 3 | — | SW 3 | N 2 | — | SW 3 | — | — | SW 4 | N 2 | — | — |
| kJ | 4 | 1 | — | 5 | — | 2 | — | 2 | — | 2 | 1 | — | 3 | — | — | 9 | 1 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 4 | 0 | 0 | 4 | 0 | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 10 | 0 | 8 | 0 | 0 |
Best forecast wave conditions in Shikoku | |||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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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