
Surf Forecasts:
Ikumi Beach surf forecast from 6 Jul 2026:
- Best quality surf: Wednesday 8 Jul, 9PM (local time) - 10ft (3.0m), 16s period, SSE swell with glassy winds.
- Most powerful swell: Friday 10 Jul, 9PM (local time) - 15ft (4.5m), 18s period, S swell with 11,327 kJ wave energy.
- Next surfable swell (1★+): Monday 6 Jul, 3PM (local time) - 3ft (0.9m), 14s 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 Monday (Jul 06) at 3PM. The primary swell is predicted to be 0.9m and 14s period with a secondary swell of 0.4m and 6s. 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 4.5m 18s and forecast to arrive on Friday (Jul 10) at 9PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 6s period and expected on Monday (Jul 06) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Mon 6th Jul) | 3ft (0.9m) 14s |
| Best Surf | 9PM (Wed 8th Jul) | 10ft (3.0m) 16s |
| Most Powerful | 9PM (Fri 10th Jul) | 15ft (4.5m) 18s |
Table - best surf conditions forecast for Ikumi Beach over the next 16 days.
Updates in hr min s Forecast update imminent
Alright folks, Rusty here. Let's take a long look at what's coming up for Ikumi Beach. We've got a bit of a slow start, but the end of the run is looking promising.
Right now, we're in a quiet patch. The first real chance for a wave is Monday afternoon, 6th July. It’s small, maybe 3 ft from the SE, but the wind goes glassy, which is a huge bonus. The water temp is 76°, which is a bit colder than we’d normally expect for this time of year. Monday morning is a write-off with risk of thunderstorms and a cross breeze.
Tuesday the 7th starts off with the best conditions we'll see for a few days. Tuesday morning is glassy offshore wind (ESE at 3 mph) with a 3 ft, 15-second SE groundswell. The combined energy is moderate (621), and the glassy conditions will make for clean, fun little waves. This is your window for a longboard or a fish. Tuesday afternoon the wind switches cross-onshore and the quality drops right off.
Then things get heavy. From Wednesday the 8th through to Saturday the 11th, we've got serious size rolling in. Wednesday morning is already 8 ft from the SE with a 17-second period, but it’s accompanied by onshore wind and messy. By Thursday the 9th, it's 10 ft from the SSE, and by Friday the 10th we're looking at 13 ft from the S with a massive combined energy of 10553. The comments say it’s too big for this break, and I have to agree. This is expert-only territory, and even then, it's going to be a washing machine. The ESE wind keeps it onshore and lumpy. This stretch is not one for the average punter—if you're into kiting, maybe it’s interesting, but for a paddle, it’s a pass.
We get a breather on Sunday the 12th. Sunday morning sees the swell dropping to 8 ft from the SSW with glassy conditions. This is the real standout of the first week. The wind is flat calm, the wave energy is still strong (2015), and the conditions are clean for experienced surfers. The 14-second period is solid groundswell, so expect some power and long waits, but the quality will be there.
After that, we settle into a long, quiet spell. From Monday the 13th right through to Thursday the 16th, we’re looking at small, inconsistent surf. The swell hangs around 3 ft to 4 ft, mostly from the S and ESE. There are some glassy mornings, but the wave energy is weak (under 300), so don’t expect much more than ankle-to-knee-high dribblers. The second half of July 17th is much the same.
Then, as we push into the third week, things start to look interesting again. Saturday the 18th morning brings a jump to 5 ft from the S with a 12-second period and glassy conditions. The energy picks up to 791. This is a promising sign. Sunday the 19th is the heavyweight of the second week. Sunday morning shows 10 ft from the ESE with a 13-second period and glassy offshore wind. The combined energy is 3320. It’s big, but with the glassy wind and ESE direction, this could be the session to circle on your calendar. Sunday afternoon drops to 8 ft, still clean. Monday the 20th is also clean (7 ft, glassy), but the wind tips cross-onshore in the afternoon and it gets too big again by Tuesday.
So the two true standouts: Tuesday morning the 7th for clean, small waves, and Sunday morning the 19th of July for the big, clean groundswell. That Sunday is the one to keep an eye on as it gets closer. The week in between is mostly a waiting game.
Rusty.
Short Range ForecastModerate rain (total 10mm), heaviest on Mon afternoon. Warm (max 27°C on Mon afternoon, min 22°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 14mm), heaviest on Thu night. Warm (max 27°C on Thu morning, min 23°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | |||||||||||||||
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) | SE 15 | SE 14 | SE 13 | SE 15 | SE 16 | SE 16 | SE 17 | SSE 17 | SSE 16 | SSE 16 | SSE 14 | SSE 16 | S 17 | S 17 | S 18 | SSW 17 | SSW 17 | SSW 16 | SSW 14 | SSW 13 | S 12 |
Wave Graph | |||||||||||||||||||||
149 | 301 | 406 | 280 | 620 | 1384 | 3016 | 4012 | 4410 | 4761 | 2518 | 4400 | 8137 | 10478 | 10743 | 9194 | 7911 | 4802 | 1984 | 711 | 650 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | cross-off | glassy | cross-on | glassy | on | on | glassy | on | on | on | cross-on | on | glassy | on | on | glassy | glassy | cross-on | glassy |
High Tide | 9:55AM1.61m | 10:36PM1.70m | 11:03AM1.51m | 11:18PM1.66m | 12:29PM1.45m | 00:06AM1.64m | 2:09PM1.45m | 1:03AM1.64m | 3:37PM1.53m | 2:04AM1.65m | 4:41PM1.63m | 3:04AM1.70m | 5:29PM1.72m | ||||||||
Low Tide | 4:09PM0.67m | 4:59AM0.76m | 4:57PM0.84m | 6:04AM0.71m | 5:55PM1.01m | 7:15AM0.63m | 7:11PM1.13m | 8:25AM0.53m | 8:35PM1.20m | 9:27AM0.41m | 9:47PM1.21m | 10:19AM0.29m | 10:43PM1.17m | ||||||||
4:58 | — | — | 4:58 | — | — | 4:58 | — | — | 4:58 | — | — | 5:00 | — | — | 5:00 | — | — | 5:01 | — | — | |
— | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | |
mm | 2 | 7 | — | 1 | — | — | — | — | — | — | — | 4 | 2 | 1 | 4 | 2 | 1 | — | — | — | — |
Temp °C | 26 | 27 | 24 | 25 | 24 | 24 | 26 | 26 | 23 | 27 | 27 | 24 | 25 | 25 | 25 | 25 | 25 | 24 | 26 | 26 | 25 |
Feels °C | 31 | 33 | 29 | 30 | 27 | 28 | 28 | 29 | 27 | 30 | 30 | 28 | 29 | 29 | 30 | 29 | 30 | 29 | 29 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | SE 15 | SE 14 | SE 13 | SE 12 | SE 16 | SE 16 | SE 17 | SSE 17 | SSE 16 | SSE 16 | SSE 14 | SSE 16 | S 17 | S 17 | S 18 | SSW 17 | SSW 17 | SSW 16 | SSW 14 | SSW 13 | S 12 |
149 | 301 | 406 | 260 | 620 | 1384 | 3016 | 4012 | 4410 | 4761 | 2518 | 4400 | 8137 | 10478 | 10743 | 9194 | 7911 | 4802 | 1984 | 711 | 650 | |
Swell 2 Height (m) Direction Period (s) | SSW 6 | SSW 6 | SSW 6 | SE 15 | SE 12 | ESE 7 | SSE 20 | ESE 6 | — | — | S 17 | S 18 | SSW 20 | — | — | — | — | SE 12 | SE 12 | SSE 12 | SE 9 |
10 | 13 | 22 | 280 | 224 | 111 | 961 | 42 | — | — | 2237 | 1468 | 2416 | — | — | — | — | 23 | 23 | 439 | 42 | |
Swell 3 Height (m) Direction Period (s) | ESE 10 | E 7 | SE 18 | ESE 8 | SW 6 | SSE 22 | — | — | — | — | E 8 | — | — | — | — | — | — | — | E 10 | SE 10 | SE 14 |
21 | 4 | 79 | 81 | 6 | 263 | — | — | — | — | 12 | — | — | — | — | — | — | — | 8 | 52 | 7 | |
Wind waves Height (m) Direction Period (s) | — | SW 6 | NNE 3 | — | ESE 8 | E 7 | E 6 | — | E 6 | E 5 | — | E 5 | — | — | — | — | — | — | — | — | — |
— | 73 | 3 | — | 110 | 152 | 94 | — | 64 | 56 | — | 53 | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 4 | 0 | 0 | 0 | 4 | 0 | 30 | 33 | 4 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 10 | 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.










