Surf Forecasts:
Ikei Island surf forecast from 8 Sep 2026:
- Best quality surf: Tuesday 15 Sep, 3PM (local time) - 3.5ft (1.1m), 10s period, E swell with glassy winds.
- Most powerful swell: Thursday 10 Sep, 12PM (local time) - 4.5ft (1.3m), 10s period, N swell with 313 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 12PM (local time) - 3.5ft (1.0m), 10s period with E 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 Tuesday (Sep 15) at 12PM. The primary swell is predicted to be 1.0m and 10s period with a secondary swell of 0.3m and 5s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Ikei Island in the next 16 days are 1.3m 10s and forecast to arrive on Thursday (Sep 10) at 12PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 7s period and expected on Sunday (Sep 13) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Tue 15th Sep) | 3.5ft (1.0m) 10s |
| Best Surf | 3PM (Tue 15th Sep) | 3.5ft (1.1m) 10s |
| Most Powerful | 12PM (Thu 10th Sep) | 4.5ft (1.3m) 10s |
Table - best surf conditions forecast for Ikei Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s be honest about Ikei Island for the next couple of weeks. The outlook is a real struggle, and for the most part, you’re better off leaving the boards in the car. We’ve got a long stretch of poor conditions, but there are a couple of very brief windows where things might just come together.
The overall pattern is dominated by onshore and cross-shore winds, mostly from the north and east, making a mess of what little swell is around. The water temp is sitting at a warm 84°F with just a minor anomaly, so it’s about as normal as it gets for this time of year.
For the first week, from Tuesday the 8th right through to Monday the 14th, it’s basically a write-off. The wind is all over the place – fresh cross-shore breezes, moderate cross-onshore chop, and even strong onshore winds. The swell is small and weak, mostly under 4ft, with short, weak periods. The combined energy is moderate at best, hitting 405 on the 8th, but the cross-wind just kills any chance of clean surf. It’s poor conditions, day after day.
Then we get a little glimmer. Tuesday the 15th afternoon looks like the best of a bad bunch, and it’s our standout. Around midday, the wind drops to nearly nothing, turning glassy. Swell from the east at 4ft with a 10-second period gives us some lines. The combined energy is moderate (226). It’s not big, but it’s the cleanest it’s going to be. This is a rare, quiet moment that could offer a few fun, uncrowded waves.
Wednesday the 16th morning still holds some promise with light cross-offshore winds and a similar 3ft east swell, keeping things clean. But the afternoon fades again. After that, from Thursday the 17th onward, it’s back to the same old story – onshore winds, small swell, and poor conditions right through to the end of the forecast on the 23rd of September. A few days in the second week show strong breezes and messy seas, so honestly, don’t hold your breath.
In short, if you’re keen, pencil in the afternoon of the 15th. It’s the only real standout. Otherwise, it’s a long, quiet stretch.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Fri morning. Warm (max 28°C on Tue afternoon, min 26°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 5mm), mostly falling on Fri night. Warm (max 28°C on Fri afternoon, min 26°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Tue 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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) | NNW 9 | NNW 8 | N 8 | N 8 | N 7 | N 9 | N 10 | N 9 | NNW 9 | NNW 8 | E 14 | SE 6 | SE 6 | SE 7 | E 14 | E 14 | E 7 | E 8 | E 9 | E 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 380 | 202 | 153 | 190 | 146 | 246 | 273 | 173 | 123 | 70 | 63 | 96 | 79 | 102 | 97 | 101 | 124 | 131 | 153 | 189 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-on | cross-on | on | on | cross | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on | on |
High Tide | 5:29PM1.72m | 4:50AM1.85m | 6:02PM1.82m | 5:40AM1.96m | 6:32PM1.90m | 6:24AM2.02m | 7:00PM1.95m | 7:05AM2.03m | 7:27PM1.96m | 7:43AM1.98m | 7:53PM1.95m | 8:21AM1.89m | 8:18PM1.91m | |||||||
Low Tide | 11:04PM0.86m | 11:31AM0.18m | 11:45PM0.68m | 12:10PM0.16m | 00:23AM0.52m | 12:45PM0.19m | 00:58AM0.40m | 1:18PM0.27m | 1:33AM0.31m | 1:48PM0.39m | 2:06AM0.28m | 2:16PM0.54m | 2:40AM0.30m | |||||||
 |  | | | |  | |  |  | |  | | | | | |  | | | | |
 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — |
 | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — | — | 6:34 | — |
mm | — | — | — | — | — | — | — | 3 | 4 | — | 2 | — | — | — | — | 2 | — | 1 | 2 | 9 |
Temp °C | 28 | 26 | 28 | 28 | 26 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 28 | 27 | 29 | 29 | 28 | 32 | 33 | 32 | 31 | 31 | 30 | 30 | 30 | 29 | 29 | 29 | 29 | 30 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 8 | S 8 | S 8 | ESE 9 | N 9 | N 10 | N 9 | NNW 9 | NNW 8 | N 8 | N 8 | SE 6 | E 14 | S 7 | ESE 6 | E 13 | E 8 | E 9 | E 9 |
| kJ | 20 | 19 | 18 | 18 | 28 | 246 | 273 | 173 | 123 | 70 | 42 | 41 | 79 | 62 | 36 | 46 | 92 | 131 | 153 | 189 |
Swell 2 Height (m) Direction Period (s) | E 9 | NE 8 | ENE 9 | E 9 | S 7 | E 9 | E 9 | ESE 9 | ESE 6 | ESE 6 | E 14 | E 14 | N 7 | NNW 7 | E 14 | S 7 | S 7 | E 13 | E 13 | N 5 |
| kJ | 13 | 10 | 16 | 14 | 9 | 44 | 40 | 26 | 14 | 21 | 63 | 61 | 26 | 15 | 97 | 24 | 17 | 89 | 31 | 7 |
Swell 3 Height (m) Direction Period (s) | NE 9 | E 9 | SE 10 | ESE 10 | SW 8 | S 7 | S 7 | ESE 7 | ESE 9 | S 7 | S 7 | S 7 | E 14 | E 10 | ESE 9 | E 14 | N 6 | S 7 | S 7 | ENE 13 |
| kJ | 12 | 6 | 4 | 9 | 3 | 8 | 9 | 9 | 25 | 8 | 8 | 8 | 64 | 16 | 29 | 101 | 3 | 9 | 8 | 59 |
Wind waves Height (m) Direction Period (s) | NNW 9 | NNW 8 | N 8 | N 8 | N 7 | — | — | — | — | — | SE 6 | SE 6 | — | SE 7 | E 6 | — | E 7 | NNE 3 | NNE 4 | — |
| kJ | 380 | 202 | 153 | 190 | 146 | — | — | — | — | — | 42 | 96 | — | 102 | 39 | — | 124 | 6 | 7 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 641 | 635 | 639 | 639 | 964 | 17 | 24 | 23 | 23 | 23 | 23 | 23 | 26 | 26 | 27 | 27 | 27 | 27 | 24 | 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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