Surf Forecasts:
Ikumi Beach surf forecast from 20 Jul 2026:
- Best quality surf: Sunday 26 Jul, 6PM (local time) - 2.5ft (0.7m), 11s period, S swell with cross-offshore winds.
- Most powerful swell: Monday 27 Jul, 6PM (local time) - 4ft (1.2m), 11s period, S swell with 338 kJ wave energy.
- Next surfable swell (1★+): Monday 20 Jul, 9PM (local time) - 1.5ft (0.4m), 9s period with ESE 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 (Jul 20) at 9PM. The primary swell is predicted to be 0.4m and 9s period with a secondary swell of 0.2m and 8s. 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 1.2m 11s and forecast to arrive on Monday (Jul 27) at 6PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Monday (Jul 27) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Mon 20th Jul) | 1.5ft (0.4m) 9s |
| Best Surf | 6PM (Sun 26th Jul) | 2.5ft (0.7m) 11s |
| Most Powerful | 6PM (Mon 27th Jul) | 4ft (1.2m) 11s |
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’s on the cards for Ikumi Beach over the next couple of weeks.
Right now, the surf is a total write-off. The first proper pulse of energy doesn't show up until Friday the 24th of July, and even then it’s only a tiny 1 ft ESE swell with a very long period of 18 seconds. The energy is weak (73), and conditions are just ordinary. We’ve got a long stretch of flat, poor conditions before that – basically a gap of a few days with nothing worth paddling out for.
The real action kicks off later on. Monday the 27th of July morning is where things start to get interesting. A 3 ft S swell rolls in with a period of 10 seconds, and the wind is glassy. The energy jumps to a moderate 327. It’s not huge, but it’s clean and rideable for the first time in a while.
But the standout, no question, is Tuesday the 28th of July. The morning is absolute magic – 5 ft of SSW swell, period of 12 seconds, and glassy offshore wind. The combined energy is strong at 747. This is the best on offer. The afternoon picks up a bit more size at 6 ft and the wind goes clean cross-offshore. This is the day to circle on the calendar. Just be aware that at this size, it might be pushing it for beginners; surfers with some experience will have a blast.
The quality holds into Wednesday the 29th of July morning with similar 5 ft SSW swell and glassy conditions. After that, the swell drops a bit through the end of the week, but we get another nice pulse on Saturday the 1st of August morning – 5 ft SSW swell, glassy, and strong energy at 663. For a solid run of clean surf, that Tuesday-to-Saturday window is where it’s at.
The water is sitting at 82°F, which is about average for this time of year. It’s warm, no surprises there.
The long-range stuff after the 1st of August fades out quickly. By Sunday the 2nd of August, the swell is dropping to 2 ft and the energy is weak (81). The rest of the outlook just trails off into small, poor conditions.
So, the call is clear: Tuesday the 28th of July morning is the pick of the whole forecast. Clean, solid, and with plenty of push. Get on it.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Tue afternoon. Warm (max 32°C on Mon afternoon, min 27°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 28mm), heaviest during Sat afternoon. Warm (max 31°C on Thu afternoon, min 27°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | ||||||||||||||
PM | 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) | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 10 | ESE 11 | SE 10 | SE 10 | SE 18 | SE 18 | SE 18 | SE 16 | SE 16 | SE 16 | SE 16 | SE 15 | SE 15 | S 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 12 | 12 | 11 | 23 | 22 | 22 | 11 | 11 | 25 | 25 | 50 | 49 | 49 | 42 | 91 | 90 | 86 | 78 | 76 | 167 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | off | glassy | cross | off | on | cross | off | cross-on | cross | off | glassy | cross | cross-off | glassy | cross-on | off | glassy | cross-on | cross-off |
High Tide | 9:50PM1.78m | 10:13AM1.61m | 10:24PM1.73m | 11:23AM1.50m | 11:05PM1.69m | 12:59PM1.44m | 11:56PM1.65m | 2:51PM1.48m | 1:04AM1.64m | 4:14PM1.58m | 2:19AM1.65m | 5:07PM1.68m | ||||||||
Low Tide | 3:30PM0.64m | 4:08AM0.71m | 4:09PM0.81m | 5:03AM0.69m | 4:54PM0.99m | 6:11AM0.66m | 5:55PM1.16m | 7:28AM0.61m | 7:28PM1.27m | 8:44AM0.52m | 9:06PM1.29m | 9:47AM0.40m | 10:15PM1.24m | |||||||
 |  |  |  | | | |  | | | |  | | | | | | | | | |
 | — | — | 5:07 | — | — | 5:07 | — | — | 5:07 | — | — | 5:07 | — | — | 5:09 | — | — | 5:09 | — | — |
 | 7:10 | — | — | 7:10 | — | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — |
mm | — | — | — | 1 | — | — | 2 | 1 | — | 3 | 2 | 1 | 10 | 1 | — | 9 | 1 | 1 | 3 | 2 |
Temp °C | 32 | 28 | 31 | 31 | 28 | 30 | 31 | 27 | 31 | 31 | 27 | 31 | 31 | 28 | 31 | 31 | 27 | 30 | 31 | 27 |
Feels °C | 36 | 33 | 36 | 35 | 33 | 35 | 37 | 32 | 35 | 35 | 32 | 36 | 36 | 33 | 36 | 36 | 31 | 35 | 36 | 32 |
Swell 1 Height (m) Direction Period (s) | ESE 7 | ESE 7 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 10 | ESE 11 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | S 10 | S 10 |
| kJ | 10 | 9 | 11 | 23 | 22 | 22 | 11 | 11 | 25 | 25 | 16 | 23 | 14 | 41 | 40 | 49 | 48 | 50 | 72 | 167 |
Swell 2 Height (m) Direction Period (s) | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSW 4 | SE 19 | SW 3 | SE 18 | SE 18 | SE 16 | SE 16 | SE 16 | SE 16 | SE 15 | SE 11 | SE 11 |
| kJ | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 1 | 15 | 2 | 49 | 49 | 42 | 91 | 90 | 86 | 78 | 55 | 55 |
Swell 3 Height (m) Direction Period (s) | ESE 11 | ESE 11 | ESE 6 | ESE 6 | SE 6 | SSW 3 | S 7 | SE 11 | SE 20 | S 8 | SE 18 | SSW 4 | SE 12 | S 7 | SSW 8 | S 8 | S 8 | S 10 | SE 15 | SE 14 |
| kJ | 12 | 12 | 4 | 4 | 1 | 1 | 1 | 4 | 15 | 5 | 50 | 1 | 21 | 4 | 6 | 5 | 10 | 16 | 76 | 74 |
Wind waves Height (m) Direction Period (s) | S 3 | SW 3 | SW 8 | SW 2 | SW 3 | SW 3 | SSW 3 | SW 3 | — | SSW 4 | SW 4 | — | SSW 4 | SSW 4 | — | SW 6 | SSW 7 | SW 3 | SW 3 | SW 3 |
| kJ | 5 | 3 | 9 | 1 | 1 | 2 | 1 | 2 | — | 2 | 7 | — | 1 | 1 | — | 2 | 11 | 3 | 2 | 4 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 518 | 16 | 16 | 939 | 16 | 16 | 596 | 276 | 8 | 338 | 0 | 0 | 4 | 0 | 0 | 4 | 0 | 0 | 4 | 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.
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