
Surf Forecasts:
Ikumi Beach surf forecast from 27 Jul 2026:
- Best quality surf: Monday 3 Aug, 6PM (local time) - 5ft (1.6m), 16s period, ESE swell with glassy winds.
- Most powerful swell: Tuesday 4 Aug, 3AM (local time) - 7ft (2.2m), 18s period, ESE swell with 2,921 kJ wave energy.
- Next surfable swell (1★+): Tuesday 28 Jul, 6AM (local time) - 1.5ft (0.5m), 10s 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 Tuesday (Jul 28) at 6AM. The primary swell is predicted to be 0.5m and 10s period with a secondary swell of 0.5m and 8s. 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 2.2m 18s and forecast to arrive on Tuesday (Aug 04) at 3AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Tuesday (Jul 28) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Tue 28th Jul) | 1.5ft (0.5m) 10s |
| Best Surf | 6PM (Mon 3rd Aug) | 5ft (1.6m) 16s |
| Most Powerful | 3AM (Tue 4th Aug) | 7ft (2.2m) 18s |
Table - best surf conditions forecast for Ikumi Beach over the next 16 days.
The Lowdown
Alright, this is Rusty, and I’m lookin’ at what we’ve got for the next couple of weeks. To be straight with you, it’s a tough start. The first few days are a bit of a write-off for anything worth paddling out for. We’re talkin’ tiny, weak swell with just 1.0ft to 2ft on offer, and while we get a few glassy moments, the wave quality is just too ordinary to get excited about. That’s the situation from Tuesday the 28th of July right through until the end of the first week of August.
Now, things start to change around Sunday the 2nd of August. We see the swell start to build, but it’s still a bit messy. By Monday the 3rd, the swell is comin’ up to 4ft – 5ft from the ESE, with a long period of 16 seconds. That’s proper groundswell energy. The combined energy is strong (848 to 1127), but the wind is mostly cross-onshore, so it’s not going to be perfect. Still, it’s a sign of things to come.
The real standout, and I mean the one to circle on your calendar, is Tuesday the 4th of August. The swell is gonna be a solid 8ft from the ESE, with a very long period of 18 seconds. The combined energy is a massive 3820, which is strong. But here’s the thing – it’s predicted to be too big for this spot. For an expert crew, this is the call. The swell is huge, but it’s a beach break, and that long-period groundswell might make it a bit too straight. If you’re not a seasoned pro, stay on the sand. The wind is cross-onshore, so it won’t be perfect, but for the big-wave chargers, this is the best on offer.
The stormy conditions continue through Wednesday the 5th and Thursday the 6th, with swell hitting 13ft to 28ft. The energy readings are off the charts (10,800 to 42,558), but we’re dealing with strong winds and a blown-out, messy ocean. This is kite-surfing territory, not paddle surfing. The swell is too big and the wind is too strong for a clean, enjoyable session.
We finally get a bit of a breather on Sunday the 9th of August. The swell drops to 6ft, and by the afternoon, the wind goes glassy. The swell is a mixed bag from the SSW with a short period of 8-9 seconds, so the energy is moderate (424 to 763). It’s not the best quality, but after the chaos, a glassy afternoon with chest-high waves will feel like a blessing.
After that, the swell fades quickly. Monday the 10th brings 3ft from the ESE with a long period, but it’s cross-onshore, so it’s a bit of a letdown. The last few days from the 11th and 12th are back to tiny, weak swell with no real energy.
So, here’s the bottom line: If you’re a big-wave expert, Tuesday the 4th of August is your day. It’s huge, it’s raw, and it’s dangerous. For everyone else, the best bet is the glassy afternoon on Sunday the 9th of August. It won’t be perfect, but it’ll be a welcome reward after the storm.
Rusty.
Short Range ForecastMostly dry. Warm (max 34°C on Tue morning, min 27°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 33°C on Sun afternoon, min 28°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | ||||||||||||||
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 14 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | ESE 10 | SE 10 | SE 10 | SE 10 | SE 9 | SE 13 | SE 11 | SE 10 | SE 11 | ESE 15 | ESE 16 | ESE 15 | ESE 14 |
Wave Graph | |||||||||||||||||||
65 | 49 | 49 | 48 | 48 | 48 | 38 | 23 | 23 | 23 | 24 | 26 | 20 | 28 | 29 | 45 | 144 | 249 | 472 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross | cross | cross-off | glassy | cross | glassy | glassy | cross-on | cross-off | glassy | cross-on | cross-off | glassy | cross-on | glassy | cross-on | on | glassy |
High Tide | 4:23AM1.79m | 6:19PM1.84m | 5:12AM1.87m | 6:49PM1.89m | 5:57AM1.93m | 7:18PM1.91m | 6:39AM1.96m | 7:45PM1.91m | 7:20AM1.96m | 8:12PM1.90m | 8:02AM1.91m | 8:40PM1.88m | |||||||
Low Tide | 11:05PM1.16m | 11:23AM0.22m | 11:45PM1.06m | 12:03PM0.18m | 00:21AM0.96m | 12:39PM0.19m | 00:56AM0.86m | 1:15PM0.23m | 1:30AM0.78m | 1:49PM0.33m | 2:06AM0.71m | 2:22PM0.45m | 2:43AM0.66m | ||||||
— | 5:11 | — | — | 5:11 | — | — | 5:13 | — | — | 5:13 | — | — | 5:13 | — | — | 5:15 | — | — | |
7:07 | — | 7:06 | — | — | 7:05 | — | — | 7:05 | — | — | 7:04 | — | — | 7:02 | — | — | 7:01 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 34 | 33 | 29 | 31 | 33 | 29 | 32 | 32 | 29 | 32 | 32 | 28 | 32 | 32 | 29 | 32 | 33 | 29 |
Feels °C | 33 | 37 | 37 | 33 | 34 | 37 | 33 | 36 | 36 | 33 | 36 | 36 | 32 | 35 | 35 | 33 | 35 | 37 | 33 |
Swell 1 Height (m) Direction Period (s) | S 8 | SE 10 | SE 10 | SSW 6 | SSW 6 | SSW 5 | SSW 8 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | SE 10 | SE 10 | SE 11 | SE 11 | ESE 16 | ESE 15 | ESE 14 |
51 | 49 | 49 | 33 | 17 | 18 | 32 | 23 | 23 | 23 | 23 | 21 | 14 | 28 | 29 | 30 | 144 | 249 | 472 | |
Swell 2 Height (m) Direction Period (s) | SE 10 | S 8 | S 8 | SE 10 | SE 10 | SE 10 | ESE 10 | SSW 5 | SSW 8 | SSW 7 | SSW 4 | SE 13 | SE 11 | SSW 4 | ENE 3 | ESE 15 | SE 9 | SE 9 | SE 10 |
50 | 36 | 35 | 48 | 48 | 48 | 38 | 5 | 6 | 10 | 2 | 26 | 20 | 2 | 1 | 45 | 21 | 13 | 15 | |
Swell 3 Height (m) Direction Period (s) | SE 14 | SE 14 | SE 13 | SSW 8 | SSW 8 | SSW 8 | SE 12 | SSW 7 | SSW 5 | SE 12 | SE 12 | — | — | S 7 | SSW 4 | ESE 9 | SSE 11 | ESE 7 | S 8 |
65 | 29 | 28 | 13 | 21 | 12 | 25 | 11 | 2 | 6 | 24 | — | — | 1 | 2 | 8 | 12 | 11 | 5 | |
Wind waves Height (m) Direction Period (s) | SW 2 | SW 4 | SSW 4 | — | — | SW 5 | — | — | — | — | — | N 3 | SW 5 | — | NNE 3 | — | N 3 | — | — |
1 | 4 | 7 | — | — | 55 | — | — | — | — | — | 1 | 3 | — | 1 | — | 3 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 4 | 4 | 0 | 0 | 8 | 0 | 16 | 16 | 16 | 0 | 518 | 585 | 587 | 593 | 0 | 30 | 33 | 0 |
Best forecast wave conditions in Shikoku | |||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||
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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.










