Surf Forecasts:
Ikumi Beach surf forecast from 22 Jul 2026:
- Best quality surf: Thursday 23 Jul, 9AM (local time) - 1.5ft (0.4m), 10s period, SE swell with glassy 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★+): Thursday 23 Jul, 9AM (local time) - 1.5ft (0.4m), 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 Thursday (Jul 23) at 9AM. The primary swell is predicted to be 0.4m and 10s period with a secondary swell of 0.2m and 4s. 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 0.4m 16s and forecast to arrive on Saturday (Jul 25) at 3AM. Winds are predicted to be cross-offshore 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+) | 9AM (Thu 23rd Jul) | 1.5ft (0.4m) 10s |
| Best Surf | 9AM (Thu 23rd Jul) | 1.5ft (0.4m) 10s |
| 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, Rusty here. Let's have a look at what's cooking for the next couple of weeks at Ikumi Beach.
Honestly, the first week is a bit of a struggle. There’s some tiny swell around, but nothing to get excited about. We’re talking knee-high, weak little waves with combined energy that's barely registering (41 to 172). The mornings do offer some glassy conditions with those light ESE breezes, which is nice for a paddle but the swell is just too small and weak to really do anything with. Afternoons get a bit sloppy with cross-shore winds and poor surf conditions.
Then we hit a real dry spell. From Thursday the 30th of July right through to Sunday the 2nd of August, it’s pretty bleak. The swell stays tiny, maybe 1 ft to 2 ft, and while the mornings are glassy or light, the afternoons are all cross-onshore. It's a proper blank run.
Now, here’s where it gets interesting. On the 2nd of August, Sunday morning, the energy bumps up significantly (282), and we see a 2 ft groundswell from the ESE with a nice 15-second period and glassy conditions. That’s a sign of things to come.
The real standout is Monday the 3rd of August. That morning is the pick of the entire run. We’ve got a clean 5 ft groundswell from the ESE, with a long 18-second period – that's proper energy (1276). The wind is glassy, offshore from the E at just 3 mph. That’s going to be clean, lined-up waves for the experienced crew. This is a serious groundswell though, with that long period, it might be a bit too straight for a beach break, so keep that in mind. Still, for anyone who knows what they're doing, Monday morning is the one.
Tuesday the 4th of August also looks excellent for the experienced surfer. Morning glass, 5 ft swell from the E with a 17-second period, and combined energy is massive at 1386. Another top-shelf session for those comfortable in bigger surf.
After that, it fades pretty quickly through Wednesday and into Thursday, with the energy dropping right back.
So there you have it. A pretty quiet first week, then a short but punchy window of proper, powerful groundswell right at the start of August. Mark Monday the 3rd on your calendar.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Sat afternoon. Warm (max 32°C on Thu morning, min 27°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 31mm), heaviest during Sun night. Warm (max 31°C on Sun morning, min 25°C on Sun night). Wind will be generally light. | ||||||||||||||||||
Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | ||||||||||||||
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 | 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 | SE 10 | SE 10 | SE 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 11 | 25 | 25 | 50 | 49 | 49 | 42 | 91 | 90 | 87 | 78 | 76 | 74 | 72 | 70 | 65 | 51 | 49 | 48 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | cross | cross-off | glassy | cross | cross-off | glassy | cross | cross-off | glassy | glassy | glassy | glassy | glassy | off | glassy | cross | off |
High Tide | 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 | 4:23AM1.79m | 6:19PM1.84m | |||||||
Low Tide | 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 | 11:23AM0.22m | 11:45PM1.06m | |||||||
 |  | |  |  |  | | | | |  | | | | | | | | | |
 | — | 5:07 | — | — | 5:07 | — | — | 5:09 | — | — | 5:09 | — | — | 5:11 | — | — | 5:11 | — | — |
 | 7:09 | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — |
mm | — | — | — | 1 | 1 | 2 | 1 | 1 | 3 | 2 | 2 | 4 | 9 | 5 | 4 | 1 | 2 | 2 | 2 |
Temp °C | 28 | 32 | 32 | 28 | 31 | 31 | 28 | 32 | 32 | 28 | 31 | 29 | 27 | 29 | 29 | 27 | 30 | 31 | 26 |
Feels °C | 33 | 37 | 37 | 33 | 36 | 35 | 33 | 37 | 36 | 33 | 35 | 34 | 32 | 33 | 34 | 32 | 34 | 34 | 30 |
Swell 1 Height (m) Direction Period (s) | 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 8 | S 8 | S 8 | S 9 | S 8 | S 8 | SE 10 |
| kJ | 11 | 25 | 25 | 16 | 32 | 49 | 41 | 40 | 36 | 48 | 50 | 55 | 34 | 47 | 50 | 56 | 51 | 36 | 48 |
Swell 2 Height (m) Direction Period (s) | SSE 8 | SSW 4 | SE 19 | SSW 3 | SE 18 | SE 9 | SE 16 | SE 16 | SE 16 | SE 16 | S 9 | S 9 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SSW 8 |
| kJ | 6 | 1 | 15 | 1 | 49 | 14 | 42 | 91 | 90 | 87 | 25 | 38 | 40 | 51 | 50 | 50 | 49 | 49 | 23 |
Swell 3 Height (m) Direction Period (s) | SE 11 | SE 20 | S 8 | SE 18 | SSW 4 | ESE 11 | SSW 4 | S 8 | S 8 | SSW 8 | SE 15 | SE 15 | SE 14 | SE 14 | SE 14 | SE 14 | SE 14 | SE 13 | SSW 5 |
| kJ | 4 | 15 | 5 | 50 | 1 | 13 | 2 | 5 | 5 | 11 | 78 | 76 | 74 | 72 | 70 | 65 | 29 | 28 | 8 |
Wind waves Height (m) Direction Period (s) | SW 3 | — | SSW 4 | SW 3 | N 2 | — | SW 4 | NNE 3 | NE 3 | W 3 | — | — | SW 5 | NE 3 | — | — | — | — | — |
| kJ | 3 | — | 1 | 4 | 1 | — | 5 | 1 | 2 | 2 | — | — | 1 | 2 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 276 | 0 | 445 | 0 | 0 | 4 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 |
Best forecast wave conditions in Shikoku | |||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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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