
Surf Forecasts:
Ikumi Beach surf forecast from 21 Jul 2026:
- Best quality surf: Friday 24 Jul, 12AM (local time) - 1ft (0.3m), 18s period, SE swell with cross-offshore winds.
- Most powerful swell: Saturday 25 Jul, 3AM (local time) - 1.5ft (0.4m), 16s period, SE swell with 94 kJ wave energy.
- Next surfable swell (1★+): Friday 24 Jul, 12AM (local time) - 1ft (0.3m), 18s 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 Friday (Jul 24) at 12AM. The primary swell is predicted to be 0.3m and 18s 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 0.4m 16s and forecast to arrive on Saturday (Jul 25) 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 0.6m 4s period and expected on Thursday (Jul 23) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Fri 24th Jul) | 1ft (0.3m) 18s |
| Best Surf | 12AM (Fri 24th Jul) | 1ft (0.3m) 18s |
| Most Powerful | 3AM (Sat 25th Jul) | 1.5ft (0.4m) 16s |
Table - best surf conditions forecast for Ikumi Beach over the next 16 days.
The Lowdown
Alright, let’s talk about the same stretch in feet and Fahrenheit. The whole 16-day window is a tough one for Ikumi Beach. Most of it is either too small to bother with or too big and blown out to be any fun. There’s no real standout, but a couple of glassy mornings might give you a little something.
Starting Tuesday the 21st of July, we’re lookin’ at tiny surf—1 ft to 1 ft—coming from the ESE or SE, with periods around 10 to 11 seconds. The combined wave energy is weak, mostly in the 18 to 45 range. Water temp is about 83°F, and that’s roughly 2°F warmer than usual, so it’s noticeably warm. Winds are cross or cross-on, so the surf is bumpy and poor. No good options here.
Friday the 24th of July, Saturday the 25th, Sunday the 26th, and Monday the 27th—all mornings—the wind goes glassy, with 3 mph from the SSE or SE. Swell is still tiny, 1 ft to 1 ft, but the period jumps to 15 or 16 seconds on Saturday through Monday, and the energy climbs into the moderate range (137 to 160). The reports say “surfable waves but very ordinary conditions.” It’s not gonna be pumping, but those glassy mornings might give you a clean little wave on a longboard. The break is inconsistent, so don’t expect much, but it’s the best you’ll see in the first week.
Tuesday the 28th of July morning stays glassy, with a 2 ft swell from the S, period 10 seconds, energy 189. Still ordinary.
Wednesday the 29th and Thursday the 30th of July mornings are also glassy, with 2 ft to 3 ft swell. Thursday the 30th sees a shift to a SSW swell at 11 seconds, energy 181. Still just “surfable waves.”
Friday the 31st of July morning is the closest thing to a highlight. Glassy, 2 ft from the SE, period 12 seconds, energy 255. The report says “expect good surf conditions.” That’s your best shot. The break is inconsistent, and crowds are often a problem, so get there early.
Saturday the 1st of August morning jumps to 4 ft from the SE, period 13 seconds, energy 883. The wind is cross from the NE at 6 mph. The report says “marginal surf forecast or questionable tide conditions.” For a beginner, 4 ft is pushin’ it, and the wind isn’t clean.
From Saturday afternoon, it all goes sideways. Swell builds to 6 ft Sunday, then 8 ft Monday and Tuesday, but the wind turns onshore, gusting 22 to 25 mph from the ESE or SE. Energy readings are huge—2205, 2638, 3091, 4221—very strong wave energy. The period is around 14 seconds, long-period groundswell, but with that strong onshore wind, it’s a choppy, dangerous mess. Over 8 ft, it’s expert-only, and with the wind howlin’, it’s more of a kite-surfing setup than paddle surf. All reports say “poor surf conditions.”
The only real window to surf is that Friday the 31st of July morning. The Saturday the 1st of August morning might be worth a look if you’re experienced, but it’s marginal. The rest is either too small and ordinary or too big and blown out. There’s a gap of a couple days in the first week where it’s all poor, and then a long stretch of ugly conditions from the 1st of August onward.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Thu night. Warm (max 32°C on Tue afternoon, min 27°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 24mm), heaviest during Sun afternoon. Warm (max 32°C on Sat morning, min 26°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Tue 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | ||||||||||||||
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 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 | SE 14 | SE 14 | SE 14 | SE 14 |
Wave Graph | ||||||||||||||||||||
23 | 22 | 22 | 11 | 11 | 25 | 25 | 50 | 49 | 49 | 42 | 91 | 90 | 87 | 78 | 76 | 74 | 72 | 70 | 65 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | on | cross | off | cross-on | cross | cross-off | glassy | cross | cross-off | glassy | cross | glassy | glassy | cross-on | glassy | glassy | cross | cross-off |
High Tide | 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 | 3:26AM1.71m | 5:45PM1.78m | ||||||||
Low Tide | 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 | 10:39AM0.30m | 11:05PM1.16m | |||||||
— | — | 5:07 | — | — | 5:07 | — | — | 5:07 | — | — | 5:09 | — | — | 5:09 | — | — | 5:11 | — | — | |
7:10 | — | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | |
mm | — | — | — | — | — | 1 | 2 | 2 | 1 | 2 | 1 | — | 6 | 1 | 3 | 8 | 3 | — | 2 | 1 |
Temp °C | 32 | 28 | 31 | 31 | 28 | 31 | 32 | 28 | 31 | 31 | 28 | 32 | 31 | 28 | 29 | 29 | 27 | 31 | 30 | 27 |
Feels °C | 36 | 33 | 36 | 36 | 33 | 36 | 37 | 34 | 36 | 36 | 33 | 37 | 36 | 33 | 34 | 34 | 33 | 35 | 34 | 32 |
Swell 1 Height (m) Direction Period (s) | ESE 11 | ESE 11 | ESE 11 | ESE 10 | ESE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 18 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 11 | S 9 | S 8 | S 8 | S 8 |
23 | 22 | 22 | 11 | 11 | 25 | 25 | 16 | 23 | 49 | 41 | 40 | 50 | 48 | 50 | 55 | 38 | 34 | 50 | 51 | |
Swell 2 Height (m) Direction Period (s) | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSW 4 | SE 19 | SW 3 | SE 18 | SE 9 | SE 16 | SE 16 | SE 16 | SE 16 | SE 15 | S 10 | SE 11 | SE 10 | SE 10 | SE 10 |
6 | 6 | 6 | 6 | 6 | 2 | 15 | 1 | 49 | 14 | 42 | 91 | 90 | 87 | 78 | 29 | 40 | 51 | 50 | 50 | |
Swell 3 Height (m) Direction Period (s) | ESE 6 | SE 6 | SSW 3 | S 7 | SE 11 | SE 20 | S 8 | SE 18 | SSW 4 | ESE 11 | SSW 4 | SSW 8 | S 8 | S 7 | S 9 | SE 15 | SE 14 | SE 14 | SE 14 | SE 14 |
4 | 2 | 1 | 1 | 4 | 15 | 5 | 50 | 1 | 13 | 2 | 6 | 5 | 9 | 26 | 76 | 74 | 72 | 70 | 65 | |
Wind waves Height (m) Direction Period (s) | SW 2 | SW 3 | SW 3 | SSW 3 | SW 3 | — | SSW 4 | SW 4 | SE 7 | SSW 4 | SW 4 | N 3 | NNE 3 | WSW 3 | — | — | — | E 6 | — | — |
2 | 1 | 3 | 1 | 3 | — | 2 | 6 | 2 | 1 | 4 | 1 | 2 | 2 | — | — | — | 1 | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 939 | 16 | 16 | 953 | 276 | 8 | 470 | 0 | 0 | 4 | 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.










