Surf Forecasts:
Ikumi Beach surf forecast from 13 Jul 2026:
- Best quality surf: Monday 13 Jul, 6PM (local time) - 4.5ft (1.3m), 11s period, SSW swell with cross-offshore winds.
- Most powerful swell: Monday 13 Jul, 3PM (local time) - 4.5ft (1.4m), 11s period, SSW swell with 447 kJ wave energy.
- Next surfable swell (1★+): Monday 13 Jul, 6PM (local time) - 4.5ft (1.3m), 11s period with SSW 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 13) at 6PM. The primary swell is predicted to be 1.3m and 11s period with a secondary swell of 0.3m and 10s. 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 1.4m 11s and forecast to arrive on Monday (Jul 13) at 3PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Tuesday (Jul 14) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Mon 13th Jul) | 4.5ft (1.3m) 11s |
| Best Surf | 6PM (Mon 13th Jul) | 4.5ft (1.3m) 11s |
| Most Powerful | 3PM (Mon 13th Jul) | 4.5ft (1.4m) 11s |
Table - best surf conditions forecast for Ikumi Beach over the next 16 days.
Alright folks, Rusty here with a look at what we’ve got coming down the line.
To be honest, the next couple of weeks are a bit of a mixed bag at Ikumi Beach. The real standout is the first morning, but after that, we’re looking at a lot of small, ordinary days and a fair few duds. There’s a long gap of pretty nothing surf through the middle, but things might just perk up again towards the very end of the run.
We kick things off on Monday the 13th, and that’s your best bet by a mile. Early morning is looking good with a clean, glassy 5ft SSW swell rolling in. The period is a solid 12 seconds, so there’s some proper groundswell energy behind it (combined energy of 682). The water’s sitting at 78°, which is a bit colder than normal for this time of year, but it’s nothing crazy. This is the session to point the car at.
But Monday afternoon starts to turn, and Tuesday the 14th through to the end of the first week is where it gets quiet. Tuesday morning still has a 3ft swell with glassy conditions, but it’s not much to write home about. From there, we drop into a string of days with tiny, weak swell—2ft, 2ft, even down to 1.0ft—and the energy just falls away. The winds are generally light and often glassy, so it’s not ugly, but the waves are just ordinary. There’s a real gap from about Wednesday the 15th all the way through to Saturday the 26th where nothing really qualifies as a good session.
Now, looking way out to Sunday the 27th of July, we’ve got another potential highlight, but it’s a long way off. The morning shows a clean, glassy 5ft SSE swell with a nice 11-second period and moderate energy (647). That could be a cracking morning if it holds up, but it’s two weeks away, so don’t book your flights just yet.
Honestly, for this stretch, Ikumi Beach is usually more consistent, so a blank run like this is a bit of a bummer. It tends not to stay this poor for long, and forecasts can always shift. For now, grab that Monday morning session and keep an eye on that very last Sunday.
Rusty.
Short Range ForecastMostly dry. Warm (max 31°C on Mon morning, min 27°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 19mm), heaviest on Fri night. Warm (max 30°C on Thu morning, min 25°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | |||||||||||||||
AM | 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) | SSW 12 | SSW 11 | SSW 11 | SSW 10 | SSW 10 | SSW 9 | SSW 9 | SSW 9 | SSW 7 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | SE 10 | SE 10 | SE 9 | ESE 12 | ESE 10 | ESE 9 | ESE 9 | SSE 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 658 | 447 | 292 | 209 | 157 | 86 | 84 | 86 | 38 | 95 | 64 | 42 | 27 | 15 | 15 | 20 | 53 | 151 | 101 | 65 | 29 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-off | glassy | cross-on | glassy | glassy | cross | glassy | glassy | on | glassy | glassy | on | glassy | cross-on | on | on | glassy | cross-on | glassy |
High Tide | 6:09PM1.80m | 4:49AM1.82m | 6:44PM1.85m | 5:35AM1.87m | 7:16PM1.87m | 6:19AM1.90m | 7:47PM1.88m | 7:02AM1.91m | 8:17PM1.87m | 7:45AM1.88m | 8:47PM1.85m | 8:29AM1.81m | 9:18PM1.81m | ||||||||
Low Tide | 11:06AM0.20m | 11:28PM1.12m | 11:48AM0.14m | 00:09AM1.05m | 12:28PM0.12m | 00:46AM0.98m | 1:05PM0.15m | 1:23AM0.90m | 1:41PM0.22m | 2:00AM0.83m | 2:17PM0.33m | 2:38AM0.78m | 2:53PM0.47m | ||||||||
 | |  |  | |  | | | | | | | |  |  | |  | | | | | |
 | 5:01 | — | — | 5:01 | — | — | 5:03 | — | — | 5:03 | — | — | 5:03 | — | — | 5:05 | — | — | 5:05 | — | — |
 | — | 7:14 | — | — | 7:14 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:12 | — | — | 7:12 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 5 | 4 | 4 | 4 | — | — | — |
Temp °C | 31 | 31 | 29 | 31 | 31 | 28 | 31 | 31 | 28 | 30 | 30 | 28 | 30 | 30 | 26 | 27 | 26 | 25 | 27 | 26 | 26 |
Feels °C | 36 | 36 | 35 | 35 | 36 | 33 | 35 | 35 | 33 | 35 | 35 | 33 | 35 | 35 | 31 | 32 | 31 | 30 | 31 | 31 | 32 |
Swell 1 Height (m) Direction Period (s) | SSW 12 | SSW 11 | SSW 11 | SSW 10 | SSW 10 | SSW 9 | SSW 9 | SSW 9 | SSW 7 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | SW 7 | SE 10 | SE 9 | ESE 12 | ESE 10 | ESE 9 | ESE 9 | SE 8 |
| kJ | 658 | 447 | 292 | 209 | 157 | 86 | 84 | 86 | 38 | 95 | 64 | 42 | 27 | 11 | 14 | 20 | 53 | 151 | 101 | 65 | 16 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 10 | SE 12 | SE 12 | SE 11 | SE 11 | SE 10 | SSW 8 | SE 10 | SE 10 | ESE 10 | ESE 10 | SE 10 | SSW 7 | E 9 | E 9 | SSE 10 | SSE 10 | SSE 10 | SSE 9 |
| kJ | 17 | 17 | 27 | 36 | 36 | 31 | 29 | 28 | 37 | 14 | 15 | 18 | 18 | 15 | 11 | 15 | 14 | 18 | 18 | 19 | 29 |
Swell 3 Height (m) Direction Period (s) | SE 13 | E 9 | E 9 | E 9 | E 9 | E 10 | E 10 | SE 11 | SE 11 | ESE 10 | ESE 10 | SE 10 | SE 10 | S 8 | E 9 | SSW 7 | SSE 9 | SSW 7 | SW 7 | SW 7 | E 9 |
| kJ | 7 | 6 | 14 | 2 | 2 | 18 | 17 | 18 | 18 | 19 | 18 | 15 | 14 | 11 | 15 | 5 | 7 | 5 | 2 | 2 | 14 |
Wind waves Height (m) Direction Period (s) | — | — | — | NNE 3 | — | — | — | — | — | — | — | — | — | — | — | ESE 3 | SE 3 | ESE 4 | SE 4 | SE 4 | — |
| kJ | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | 16 | 9 | 8 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 8 | 0 | 0 | 33 | 0 | 0 | 16 | 0 | 0 | 33 | 0 | 0 | 593 | 0 | 30 | 30 | 30 | 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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