
Surf Forecasts:
Ikumi Beach surf forecast from 29 Jul 2026:
- Best quality surf: Tuesday 4 Aug, 9AM (local time) - 10ft (3.0m), 18s period, ESE swell with onshore winds.
- Most powerful swell: Wednesday 5 Aug, 9AM (local time) - 21ft (6.5m), 19s period, ESE swell with 27,305 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 12PM (local time) - 1.5ft (0.5m), 10s 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 Wednesday (Jul 29) at 12PM. The primary swell is predicted to be 0.5m and 10s 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 6.5m 19s and forecast to arrive on Wednesday (Aug 05) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 6s period and expected on Wednesday (Jul 29) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Wed 29th Jul) | 1.5ft (0.5m) 10s |
| Best Surf | 9AM (Tue 4th Aug) | 10ft (3.0m) 18s |
| Most Powerful | 9AM (Wed 5th Aug) | 21ft (6.5m) 19s |
Table - best surf conditions forecast for Ikumi Beach over the next 16 days.
The Lowdown
Alright, let’s check out Ikumi Beach.
We’re looking at a pretty slow start. Wednesday the 29th of July offers tiny 0.5 ft waves with just 86 units of combined energy. The water’s a touch warmer than usual at 83°. It’s glassy in the morning, which is nice, but the swell is coming from the SE instead of the ideal ESE direction. It’s surfable but nothing special.
Thursday and Friday see the swell drop even more to around 1.0–1 ft, with energy readings falling into the 30s and 50s. Winds stay light, even glassy at times, but there’s no real push. Saturday morning the 1st of August is flat with only 31 units of energy. This break is inconsistent by nature, so this flat spell isn’t unusual.
Sunday the 2nd shows a small bump – 2 ft in the morning, climbing to 3 ft by the afternoon, with energy jumping to 162 and then 343. The period stretches to 15 seconds, so some long-period groundswell is starting to roll in. But the wind is cross-onshore, so it’s only marginal. Still, at least there’s a pulse.
Monday the 3rd brings a proper jump. The swell hits 6 ft in the morning, then 7 ft by the afternoon, coming from the ESE with a cracking 17–18 second period. Energy readings are in the thousands – 1626 and 2695. The wind is light and onshore, and while it’s listed as marginal, the direction finally matches the optimum. This is the first real glimmer of something good, but the size gets big – over 8 ft by Tuesday the 4th, so that’s expert-only water. Tuesday morning has 10 ft and 5242 units of energy, and by the afternoon it’s 12 ft with 7051 units. Winds are light and onshore, but Ikumi Beach is simply too small to handle that size.
Wednesday the 5th and Thursday the 6th see the swell absolutely roaring – 21 ft to 26 ft with energy readings climbing to 32,430 and even 50,920 on Thursday afternoon. That’s massive energy. But the wind is fresh and cross-onshore, and the swell is way too big for this beach. This setup looks more interesting for kite surfing than paddle surfing.
Friday the 7th still has 18 ft in the morning, but by the afternoon it drops to 10 ft from the SSW, with onshore wind and heavy rain – poor conditions.
From Saturday the 8th through to the end, the swell gradually fades back down to 2 ft–6 ft. Winds are mostly cross-onshore or onshore, and conditions are poor to marginal. On Wednesday the 12th of August there’s a short-period 6 ft ESE pulse, but with 8 seconds and cross-onshore breezes, it’s choppy and not worth chasing.
The standout? Honestly, there’s no true standout for a regular surfer here. The best of a quiet run might be Monday the 3rd of August – a 7 ft ESE swell at 18 seconds with light onshore winds. It’s got energy and shape potential, but it’s just on the edge of being too big for Ikumi Beach. For an experienced surfer who knows the bank, that afternoon might offer a few bombs. But it’s not a clear call. For most, this is a week and a half of waiting and watching.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Wed afternoon. Warm (max 33°C on Thu morning, min 28°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Sun afternoon. Warm (max 33°C on Sat morning, min 26°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | |||||||||||||||
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 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | SE 10 | SE 10 | SE 11 | SE 16 | ESE 15 | ESE 15 | ESE 16 | ESE 17 | ESE 18 | ESE 17 | ESE 18 | ESE 18 | ESE 18 |
Wave Graph | |||||||||||||||||||||
48 | 48 | 47 | 23 | 23 | 23 | 24 | 23 | 23 | 28 | 29 | 66 | 125 | 314 | 706 | 1608 | 2640 | 3099 | 5242 | 6657 | 12823 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | cross-off | glassy | cross-on | glassy | glassy | cross-on | glassy | glassy | cross-on | cross-off | cross-on | cross-on | glassy | on | on | glassy | on | on | glassy |
High Tide | 6:49PM1.89m | 5:57AM1.93m | 7:18PM1.91m | 6:39AM1.96m | 7:45PM1.91m | 7:20AM1.96m | 8:12PM1.90m | 8:02AM1.91m | 8:40PM1.88m | 8:45AM1.83m | 9:08PM1.85m | 9:33AM1.72m | 9:38PM1.80m | ||||||||
Low Tide | 12:03PM0.18m | 00:21AM0.96m | 12:39PM0.19m | 00:56AM0.86m | 1:15PM0.23m | 1:30AM0.78m | 1:49PM0.33m | 2:06AM0.71m | 2:22PM0.45m | 2:43AM0.66m | 2:55PM0.61m | 3:24AM0.63m | 3:29PM0.78m | ||||||||
5:11 | — | — | 5:13 | — | — | 5:13 | — | — | 5:13 | — | — | 5:15 | — | — | 5:15 | — | — | 5:16 | — | — | |
— | 7:05 | — | — | 7:05 | — | — | 7:04 | — | — | 7:02 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | |
mm | 1 | 3 | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 1 | 2 | 1 | 1 | 1 |
Temp °C | 31 | 31 | 29 | 33 | 33 | 29 | 32 | 32 | 28 | 33 | 32 | 29 | 32 | 32 | 28 | 30 | 30 | 27 | 29 | 28 | 27 |
Feels °C | 35 | 35 | 33 | 36 | 37 | 33 | 35 | 36 | 32 | 36 | 36 | 33 | 36 | 36 | 34 | 34 | 34 | 33 | 34 | 33 | 32 |
Swell 1 Height (m) Direction Period (s) | SSW 6 | SSW 8 | SSW 6 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | SE 10 | SE 10 | SE 11 | SE 11 | ESE 15 | ESE 15 | ESE 16 | ESE 17 | ESE 18 | ESE 17 | ESE 18 | ESE 18 | ESE 18 |
17 | 35 | 21 | 23 | 23 | 23 | 23 | 23 | 23 | 28 | 29 | 41 | 125 | 314 | 706 | 1608 | 2640 | 3099 | 5242 | 6657 | 12823 | |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 10 | SW 5 | SSW 5 | SSW 5 | SSW 4 | S 4 | S 7 | SSW 4 | ESE 16 | SE 16 | ESE 9 | SE 9 | SE 10 | ESE 5 | SSE 10 | ESE 6 | — | — | — |
48 | 48 | 47 | 6 | 4 | 5 | 4 | 1 | 8 | 2 | 26 | 66 | 32 | 13 | 17 | 13 | 18 | 68 | — | — | — | |
Swell 3 Height (m) Direction Period (s) | SSW 8 | SE 13 | SSW 7 | SSW 8 | SSW 8 | S 7 | SE 12 | SE 13 | SE 11 | S 7 | SSW 4 | SSW 6 | SE 11 | SE 7 | S 8 | S 8 | — | — | — | — | — |
21 | 26 | 10 | 11 | 6 | 4 | 24 | 6 | 20 | 1 | 2 | 4 | 5 | 12 | 5 | 5 | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | SW 5 | — | — | — | — | — | NNE 3 | SW 5 | — | NE 3 | — | NNE 3 | E 4 | E 4 | — | ESE 5 | — | — | ESE 8 | — |
— | 32 | — | — | — | — | — | 2 | 6 | — | 2 | — | 2 | 4 | 7 | — | 37 | — | — | 394 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 16 | 16 | 16 | 0 | 486 | 0 | 381 | 486 | 0 | 30 | 4 | 0 | 30 | 33 | 0 | 33 | 30 | 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.










