Surf Forecasts:
Ikumi Beach surf forecast from 19 Sep 2026:
- Best quality surf: Sunday 20 Sep, 9AM (local time) - 11ft (3.5m), 13s period, SE swell with cross-shore winds.
- Most powerful swell: Sunday 20 Sep, 12PM (local time) - 11ft (3.5m), 13s period, SE swell with 4,314 kJ wave energy.
- Next surfable swell (1★+): Sunday 20 Sep, 9AM (local time) - 11ft (3.5m), 13s 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 Sunday (Sep 20) at 9AM. The primary swell is predicted to be 3.5m and 13s period with a secondary swell of 1.0m and 4s. The wind is predicted to be cross-shore as the swell arrives.
The most powerful waves expected at Ikumi Beach in the next 16 days are 3.5m 13s and forecast to arrive on Sunday (Sep 20) at 12PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Monday (Sep 21) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Sun 20th Sep) | 11ft (3.5m) 13s |
| Best Surf | 9AM (Sun 20th Sep) | 11ft (3.5m) 13s |
| Most Powerful | 12PM (Sun 20th Sep) | 11ft (3.5m) 13s |
Table - best surf conditions forecast for Ikumi Beach over the next 16 days.
Short Range ForecastMostly dry. Warm (max 30°C on Mon afternoon, min 19°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Thu night. Warm (max 26°C on Wed morning, min 22°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | |||||||||||||||
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 13 | SE 13 | SE 13 | SE 13 | ESE 13 | ESE 12 | ESE 10 | ESE 9 | NNE 6 | NE 5 | SE 7 | ESE 7 | ESE 6 | ESE 8 | ESE 8 | E 8 | ESE 7 | ESE 5 | ESE 7 | S 14 | S 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 4240 | 4314 | 3514 | 4059 | 4179 | 757 | 78 | 35 | 55 | 30 | 8 | 17 | 14 | 67 | 167 | 228 | 69 | 17 | 9 | 33 | 60 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross-off | cross | cross-on | glassy | cross-on | glassy | cross-on | cross-on | on | glassy | glassy | glassy | glassy |
High Tide | 2:24PM1.49m | 11:44PM1.51m | 3:35PM1.58m | 1:58AM1.53m | 4:12PM1.67m | 3:20AM1.64m | 4:41PM1.75m | 4:15AM1.78m | 5:08PM1.82m | 5:01AM1.90m | 5:33PM1.87m | 5:41AM1.98m | 5:58PM1.91m | ||||||||
Low Tide | 6:56PM1.36m | 7:51AM0.65m | 9:00PM1.25m | 9:08AM0.59m | 9:52PM1.08m | 10:02AM0.52m | 10:29PM0.90m | 10:44AM0.47m | 11:02PM0.73m | 11:21AM0.46m | 11:33PM0.56m | 11:54AM0.48m | 00:04AM0.43m | ||||||||
 | |  |  | | | | |  | | | | | |  |  | | | |  | | |
 | 5:48 | — | — | 5:48 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — |
 | — | 6:02 | — | — | 6:01 | — | — | 6:00 | — | — | 5:59 | — | — | 5:58 | — | — | 5:55 | — | — | 5:54 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 2 | 3 | — | — | 4 | — |
Temp °C | 29 | 28 | 25 | 29 | 30 | 24 | 29 | 29 | 21 | 26 | 26 | 23 | 26 | 26 | 24 | 25 | 25 | 24 | 27 | 26 | 23 |
Feels °C | 28 | 27 | 25 | 29 | 31 | 26 | 28 | 29 | 21 | 25 | 26 | 25 | 28 | 29 | 27 | 28 | 29 | 29 | 30 | 31 | 26 |
Swell 1 Height (m) Direction Period (s) | SE 13 | SE 13 | SE 13 | SE 13 | ESE 13 | ESE 12 | ESE 10 | ESE 9 | SE 9 | ESE 7 | SE 7 | ESE 7 | ESE 6 | ESE 8 | ESE 8 | ESE 7 | ESE 7 | ESE 5 | ESE 7 | S 14 | SSE 10 |
| kJ | 4240 | 4314 | 3514 | 4059 | 4179 | 757 | 78 | 35 | 14 | 5 | 8 | 17 | 14 | 67 | 167 | 91 | 69 | 17 | 9 | 33 | 37 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | S 9 | S 8 | S 8 | S 8 | SE 9 | S 8 | SSE 6 | SSE 9 | SSE 9 | SE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 11 | S 14 |
| kJ | — | — | — | — | — | 2 | 1 | 1 | 5 | 3 | 5 | 4 | 7 | 7 | 3 | 7 | 7 | 7 | 7 | 23 | 60 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | S 8 | S 8 | E 8 | S 8 | SE 9 | SSE 9 | S 8 | S 7 | S 7 | S 7 | E 9 | E 9 | E 9 | ESE 8 | E 8 |
| kJ | — | — | — | — | — | — | 6 | 5 | 1 | 5 | 3 | 8 | 4 | 1 | 1 | 1 | 7 | 6 | 6 | 7 | 21 |
Wind waves Height (m) Direction Period (s) | NNE 4 | NNE 5 | NNE 5 | NNE 6 | NNE 6 | N 6 | NNE 4 | NNE 4 | NNE 6 | NE 5 | NE 4 | — | NNE 3 | — | — | E 8 | — | — | — | ENE 6 | NNE 3 |
| kJ | 38 | 61 | 80 | 143 | 97 | 10 | 4 | 21 | 55 | 30 | 7 | — | 1 | — | — | 228 | — | — | — | 4 | 2 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 30 | 30 | 47 | 289 | 14 | 0 | 0 | 55 | 0 | 294 | 939 | 393 | 30 | 0 | 8 | 30 | 381 | 16 | 276 | 0 | 0 |
Best forecast wave conditions in Shikoku | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Ikumi Beach surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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