
Surf Forecasts:
Ikumi Beach surf forecast from 3 Jul 2026:
- Best quality surf: Wednesday 8 Jul, 12AM (local time) - 10ft (3.0m), 17s period, SE swell with cross-onshore winds.
- Most powerful swell: Friday 10 Jul, 3PM (local time) - 13ft (4.0m), 17s period, S swell with 8,966 kJ wave energy.
- Next surfable swell (1★+): Saturday 4 Jul, 3PM (local time) - 3.5ft (1.1m), 5s 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 Saturday (Jul 04) at 3PM. The primary swell is predicted to be 1.1m and 5s period with a secondary swell of 0.2m and 9s. Another secondary swell of 0.1m and 9s is also forecast. 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 4.0m 17s and forecast to arrive on Friday (Jul 10) at 3PM. Winds are predicted to be cross-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 Saturday (Jul 04) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Sat 4th Jul) | 3.5ft (1.1m) 5s |
| Best Surf | 12AM (Wed 8th Jul) | 10ft (3.0m) 17s |
| Most Powerful | 3PM (Fri 10th Jul) | 13ft (4.0m) 17s |
Table - best surf conditions forecast for Ikumi Beach over the next 16 days.
Updates in hr min s Forecast update imminent
Alright, this is Rusty, and I’m lookin’ at the stretch ahead for Ikumi Beach. The water temp is sittin’ around 76°F, a touch cooler than average for this time of year, but nothing that’ll put you off a session.
Honestly, the first week is a bit of a slow burner. Friday the 3rd and Saturday the 4th are pretty flat and messy – we’re talkin’ tiny, weak waves and poor conditions. Not worth paddlin’ out for. Sunday the 5th stays small too. There’s a real quiet spell with nothin’ doing, but hold tight.
Things start to get interesting on Monday the 6th. We see some new energy roll in, swell jumping to 3ft from the SE with a nice glassy afternoon, and the combined energy climbs to 237. It’s not huge, but for a Monday arvo session, it’s clean and fun. Then Tuesday the 7th morning is where it starts to get proper. The swell hits 4ft from the SE, but here’s the kicker – the period is a very long 18 seconds. That’s groundswell with serious grunt. The combined energy is 1325, moderate to strong. The wind is glassy. This is the standout of the early week for sure. That long period means the waves will have shape, but at a beachie like Ikumi, it might wall up a bit – keep your eyes open for a corner.
From Wednesday the 8th through to Saturday the 11th, the swell just keeps pumping up, hitting 13ft from the S by the 10th. That’s proper big – over 8ft so it’s strictly for experts only. The wind stays favorable or glassy, but the forecast notes it’s just too big for this break. The combined energy numbers are massive – 6037, 6469, up to 13590 – but this is big, raw, and unruly. With these sizes and a beach setup, it might look better for kite surfing than paddle surfing.
After that big pulse, Sunday the 12th brings a welcome drop back to a very surfable 5ft from the SSW, period 13 seconds, and glassy conditions. Combined energy is 1413. That’s a solid, clean day for experienced surfers. Another true standout in this window. Monday the 13th and Tuesday the 14th are smaller again, with cleaner conditions, but dropping off.
Into the second week, Wednesday the 15th and Thursday the 16th look a bit mixed. Thursday the 16th afternoon, however, has a nice 7ft from the SE with a 15-second period and glassy wind – that’s a late highlight, energy at 2016. Friday the 17th and Saturday the 18th are back to big and too big for this spot, but Saturday the 18th afternoon cleans up to 8ft from the SSW with glassy conditions – another solid option for the experienced crew.
So, to wrap it up: the standout mornings to bookmark are Tuesday the 7th morning for that first bit of serious, long-period glass, and Sunday the 12th for the drop back into clean, powerful waves. Both will need a bit of local knowledge to get the best out of ’em, but they’re your best bets.
Rusty.
Short Range ForecastModerate rain (total 14mm), heaviest on Fri night. Warm (max 26°C on Sun morning, min 23°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 12mm), heaviest on Mon afternoon. Warm (max 27°C on Tue morning, min 23°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Friday 3 | Saturday 4 | Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | |||||||||||||||
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 7 | ESE 9 | SE 9 | ESE 9 | SE 5 | SSW 6 | SSW 7 | SE 9 | SSW 6 | SE 15 | SE 14 | SE 12 | SE 18 | SE 17 | SE 17 | SE 17 | SSE 17 | SSE 16 | SSE 16 | SSE 16 | S 16 |
Wave Graph | |||||||||||||||||||||
34 | 16 | 21 | 16 | 51 | 29 | 40 | 23 | 12 | 104 | 228 | 346 | 718 | 2683 | 4335 | 4137 | 5974 | 5002 | 6267 | 6705 | 6939 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | glassy | cross-on | cross-off | glassy | glassy | cross | glassy | glassy | glassy | glassy | glassy | cross-on | cross-on | on | on | glassy | glassy | on | glassy |
High Tide | 8:51PM1.80m | 8:10AM1.78m | 9:24PM1.77m | 8:59AM1.70m | 9:59PM1.73m | 9:55AM1.61m | 10:36PM1.70m | 11:03AM1.51m | 11:18PM1.66m | 12:29PM1.45m | 00:06AM1.64m | 2:09PM1.45m | 1:03AM1.64m | ||||||||
Low Tide | 2:08PM0.22m | 2:30AM0.89m | 2:47PM0.35m | 3:14AM0.84m | 3:27PM0.50m | 4:03AM0.80m | 4:09PM0.67m | 4:59AM0.76m | 4:57PM0.84m | 6:04AM0.71m | 5:55PM1.01m | 7:15AM0.63m | 7:11PM1.13m | ||||||||
4:56 | — | — | 4:56 | — | — | 4:56 | — | — | 4:58 | — | — | 4:58 | — | — | 4:58 | — | — | 4:58 | — | — | |
— | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | |
mm | — | — | 6 | 3 | 2 | — | 1 | 2 | — | 1 | 2 | — | 1 | 3 | 4 | 1 | — | — | — | — | — |
Temp °C | 25 | 25 | 24 | 23 | 24 | 24 | 26 | 25 | 24 | 25 | 25 | 24 | 27 | 26 | 25 | 24 | 24 | 24 | 27 | 27 | 24 |
Feels °C | 29 | 28 | 28 | 26 | 27 | 28 | 30 | 29 | 29 | 30 | 30 | 28 | 31 | 30 | 30 | 28 | 28 | 28 | 30 | 30 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 7 | SW 6 | SE 9 | ESE 9 | ESE 9 | SSW 6 | SSW 7 | SSW 6 | SSW 6 | SE 15 | SE 14 | SE 12 | SE 14 | SE 17 | SE 17 | SE 17 | SSE 17 | SSE 16 | SSE 16 | SSE 16 | S 16 |
34 | 10 | 21 | 16 | 8 | 29 | 40 | 23 | 12 | 104 | 228 | 346 | 565 | 2683 | 4335 | 4137 | 5974 | 5002 | 6267 | 6705 | 6939 | |
Swell 2 Height (m) Direction Period (s) | SE 8 | NE 3 | S 5 | SSW 5 | SE 9 | ESE 4 | SE 10 | SE 9 | ESE 8 | SSW 6 | SSW 5 | SSW 5 | SE 18 | SW 6 | SSE 21 | SSE 20 | S 21 | E 8 | — | — | E 8 |
18 | 2 | 5 | 3 | 3 | 7 | 16 | 19 | 7 | 6 | 5 | 3 | 718 | 12 | 1132 | 1864 | 449 | 130 | — | — | 33 | |
Swell 3 Height (m) Direction Period (s) | ESE 12 | ESE 9 | SSW 6 | ESE 12 | ESE 12 | ESE 9 | ESE 9 | ESE 4 | SSE 8 | ESE 10 | S 7 | S 7 | SW 6 | — | — | — | — | — | — | — | — |
14 | 16 | 4 | 14 | 13 | 7 | 7 | 1 | 7 | 21 | 4 | 1 | 5 | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | NE 4 | NNE 4 | — | SE 3 | SE 5 | — | ESE 4 | — | — | — | — | SE 4 | ESE 5 | ESE 5 | E 5 | E 5 | E 5 | — | E 8 | — | — |
6 | 4 | — | 8 | 51 | — | 3 | — | — | — | — | 4 | 42 | 72 | 47 | 36 | 46 | — | 80 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 8 | 280 | 16 | 326 | 0 | 0 | 0 | 16 | 338 | 0 | 0 | 0 | 0 | 4 | 4 | 30 | 33 | 30 | 4 | 33 | 4 |
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.










