Surf Forecasts:
Ikei Island surf forecast from 11 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 12PM (local time) - 2ft (0.6m), 11s period, ENE swell with glassy winds.
- Most powerful swell: Wednesday 12 Aug, 6AM (local time) - 2ft (0.6m), 11s period, ENE swell with 97 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 12PM (local time) - 2ft (0.6m), 11s period with ENE swell.
Best Forecast Surf Conditions for Ikei Island this week:
The surf forecast for Ikei Island over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 12) at 12PM. The primary swell is predicted to be 0.6m and 11s period with a secondary swell of 0.5m and 6s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Ikei Island in the next 16 days are 0.6m 11s and forecast to arrive on Wednesday (Aug 12) at 6AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 9s period and expected on Wednesday (Aug 12) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Wed 12th Aug) | 2ft (0.6m) 11s |
| Best Surf | 12PM (Wed 12th Aug) | 2ft (0.6m) 11s |
| Most Powerful | 6AM (Wed 12th Aug) | 2ft (0.6m) 11s |
Table - best surf conditions forecast for Ikei Island over the next 16 days.
The Lowdown
G'day, Rusty here, and I've gotta be straight with you – the next couple of weeks at Ikei Island (Japan) are looking pretty flat and messy. The water's sitting at about average for this time of year, nothing unusual there.
Let's run through it. Right now and for the next week and a half, it's a tough watch. From Wednesday the 12th right through to Tuesday the 25th, the swell is just tiny – mostly around 1ft to 2ft – and the wind is all over the shop, mostly cross-shore or cross-onshore, often with a bit of chop. There's a few glassy windows Thursday the 13th morning and afternoon, but with a weak 2ft ENE swell and low energy (combined energy of all swells directed here just 75), it's honestly not worth paddling out for. The rest of that stretch is mostly poor surf conditions with a "0" score, so don't get your hopes up.
The first real glimmer of hope comes on Wednesday the 26th. The swell starts to push up a bit – 4ft to 5ft from the ESE, with a period around 11 seconds, so there's some groundswell energy building. The combined energy of all swells directed here jumps to 386 on the 26th morning and 528 on the afternoon, which is moderate wave energy – finally something to work with. The wind is light cross-onshore or onshore, but the afternoon gets a "marginal" call, so it's touch and go.
But the standout? That's Thursday the 27th morning. The swell is 4ft from the ESE, period 10 seconds, and the combined energy of all swells directed here is a solid 448 – moderate energy. The wind is from the NW at 15 km/h, which is cross-offshore, and the forecast says "clean." This is the best window in the whole outlook. The break is a reef, so it should handle the long-period energy well. I'd be marking that Thursday morning as the one to aim for, though remember it's a fair way out, so keep an eye on it.
Other than that, the rest of the run after the 27th drops off again into tiny, weak drivel. So, one clear highlight: Thursday the 27th morning at Ikei Island. That's your window.
Rusty.
Short Range ForecastHeavy rain (total 47mm), heaviest during Wed morning. Warm (max 28°C on Thu afternoon, min 25°C on Wed morning). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 20mm), heaviest during Sat morning. Warm (max 29°C on Mon afternoon, min 27°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||||
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) | ENE 12 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ESE 5 | ESE 6 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 140 | 93 | 90 | 56 | 57 | 58 | 33 | 33 | 11 | 25 | 68 | 66 | 80 | 78 | 57 | 56 | 57 | 56 | 54 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | glassy | cross | glassy | glassy | cross-on | on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 5:43AM2.00m | 7:05PM1.86m | 6:31AM2.06m | 7:38PM1.91m | 7:16AM2.07m | 8:09PM1.92m | 7:59AM2.02m | 8:39PM1.91m | 8:40AM1.91m | 9:07PM1.87m | 9:22AM1.77m | 9:35PM1.82m | |||||||
Low Tide | 11:55PM0.85m | 12:30PM0.00m | 00:39AM0.72m | 1:10PM0.01m | 1:19AM0.61m | 1:47PM0.08m | 1:58AM0.52m | 2:21PM0.20m | 2:37AM0.48m | 2:53PM0.37m | 3:15AM0.47m | 3:23PM0.55m | |||||||
 |  | |  |  | |  | | | | | |  |  |  | | | | | |
 | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:00 | — | — |
 | 7:07 | — | 7:07 | — | — | 7:06 | — | — | 7:06 | — | — | 7:05 | — | — | 7:04 | — | — | 7:02 | — |
mm | 7 | 13 | 11 | 1 | 1 | 1 | — | 7 | 6 | 7 | 9 | 4 | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 25 | 26 | 27 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 29 | 27 |
Feels °C | 31 | 31 | 30 | 31 | 31 | 33 | 31 | 33 | 32 | 31 | 32 | 32 | 31 | 31 | 30 | 30 | 30 | 31 | 29 |
Swell 1 Height (m) Direction Period (s) | S 9 | S 9 | S 9 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | SSW 8 | SW 8 | SW 8 | S 8 | S 8 | SW 9 | SW 9 | S 8 | SSW 8 |
| kJ | 282 | 192 | 148 | 138 | 173 | 86 | 111 | 144 | 86 | 58 | 88 | 70 | 58 | 58 | 57 | 79 | 64 | 55 | 46 |
Swell 2 Height (m) Direction Period (s) | ENE 12 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | SW 8 | SW 8 | ESE 6 | SW 8 | ESE 6 | S 8 | S 8 | S 8 | ENE 10 | SW 8 | S 8 | S 8 | SW 9 | ENE 10 |
| kJ | 140 | 93 | 90 | 56 | 57 | 55 | 25 | 6 | 32 | 25 | 48 | 49 | 43 | 78 | 55 | 43 | 45 | 62 | 54 |
Swell 3 Height (m) Direction Period (s) | E 6 | SW 9 | SW 9 | SW 8 | N 8 | ENE 10 | ENE 10 | ENE 10 | ESE 5 | SSW 9 | ENE 11 | ENE 11 | ENE 10 | SW 8 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | S 8 |
| kJ | 38 | 64 | 46 | 25 | 18 | 58 | 33 | 33 | 11 | 30 | 68 | 66 | 80 | 34 | 57 | 56 | 57 | 56 | 28 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | ESE 6 | — | — | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 5 | SE 4 | ESE 4 | E 4 | ESE 4 |
| kJ | — | — | — | — | — | — | — | 17 | — | — | 34 | 36 | 27 | 29 | 26 | 17 | 11 | 5 | 19 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 26 | 26 | 0 | 26 | 0 | 0 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
Best forecast wave conditions in Okinawa | |||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||
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Information about the Ikei Island Surf forecast
The above surf forecast table for Ikei Island provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Ikei Island can be found by selecting the local surf guide option on the grey menu. Our Ikei Island 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 (Ikei Island) 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 Ikei Island 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.
Ikei Island is 14 km (9 miles) from Gushikawa. If you plan a holiday in Okinawa, look for hotels and other accommodation in Gushikawa. Gushikawa has rooms for a wide range of budgets as well as car hire and transport links.
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