
Surf Forecasts:
Ikei Island surf forecast from 7 Sep 2026:
- Most powerful swell: Saturday 12 Sep, 6PM (local time) - 5.5ft (1.7m), 10s period, SE swell with 542 kJ wave energy.
Best Forecast Surf Conditions for Ikei Island this week:
The most powerful waves expected at Ikei Island in the next 16 days are 1.7m 10s and forecast to arrive on Saturday (Sep 12) at 6PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 9s period and expected on Sunday (Sep 13) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 6PM (Sat 12th Sep) | 5.5ft (1.7m) 10s |
Table - best surf conditions forecast for Ikei Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what Ikei Island has in store for us over the next couple of weeks.
Right out of the gate, it’s a bit of a bummer. We're looking at a long, quiet stretch starting now and running all the way through the weekend of the 14th. For a solid week, the conditions are just plain poor. You’ve got moderate to fresh cross-shore and onshore winds spoiling any chance of clean surf, with swell heights mainly between 3ft and 5ft, but the wind is just trashing it. Early on, a NNW swell with a short 7-second period offers weak energy (276), and it doesn't get much better from there. The combined swell energy sits in the low to moderate range (from 126 to 460), but it’s all messy. The wind is either cross, cross-on, or even onshore, creating chop and lump. Honestly, for a week straight, you’d be better off leaving the board at home.
Now, things start to look a little promising as we head into the second week. From Wednesday, September 16, we finally see a shift. A light S wind picks up, turning cross-offshore, offering some cleaner conditions. Swell is small, around 3ft with a better 10-second period from the east, but combined energy is only moderate (220). It’s marginal, but at least the water is getting glassy. By Friday, September 18, and into Saturday, September 19, we see glassy conditions with a light breeze. Swell is tiny—only 2ft to 2ft—with a long 12-second period on Friday, and combined energy is very low (106 to 151). It's surfable for a log if you're desperate, but there's no power behind it.
But hold on. The real standout is shaping up for the final days of the forecast. Mark your calendars for Monday, September 21, and then especially Tuesday, September 22. On Monday, the swell jumps up quickly to 6ft (NE) with a moderate 11-second period, the combined energy surges to a strong 1313. Conditions are described as marginal with a light to gentle cross-onshore breeze, but the energy is there. Then Tuesday, September 22, is the pick of the bunch. We're looking at around 7ft to 8ft of a very long-period easterly groundswell—18 seconds, folks. You feel that. The combined energy rockets to a very strong 3834. The morning has a light cross breeze, but by afternoon it goes glassy. This is excellent surf, but I have to be straight with you: at over 7ft, this is expert territory. The long period will also groom the waves beautifully, but it's a powerful, heavy swell. That kind of period can make beach breaks a bit straight, but here at Ikei Island, a known reef break, it should be a thing of beauty. The water temp is sitting at 84°F, about average for this time of year.
So, if you're an experienced surfer, the window around September 22 is your moment. It’s a long way out, so keep an eye on it, but it’s got real potential. No crowds are noted as a guarantee, but this spot does get busy *sometimes*, so expect company for what could be the best day of the month.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Tue night. Warm (max 29°C on Mon afternoon, min 26°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 8mm), mostly falling on Fri morning. Warm (max 28°C on Thu afternoon, min 27°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | ||||||||||||||
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 7 | N 9 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | N 8 | NNW 7 | N 8 | N 9 | N 9 | NNW 9 | ESE 8 | SE 7 | ESE 6 | SE 7 | ESE 6 | E 7 | ESE 7 | ESE 7 |
Wave Graph | ||||||||||||||||||||
212 | 185 | 281 | 275 | 191 | 151 | 163 | 86 | 157 | 177 | 173 | 101 | 74 | 106 | 97 | 149 | 86 | 148 | 187 | 225 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on |
High Tide | 4:51PM1.60m | 3:50AM1.72m | 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 | |||||||
Low Tide | 10:13PM1.04m | 10:46AM0.26m | 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 | |||||||
— | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | |
6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — | |
mm | — | — | — | — | 1 | 2 | 1 | — | 2 | 2 | 2 | 3 | 1 | — | — | — | — | — | 1 | — |
Temp °C | 29 | 27 | 28 | 28 | 27 | 28 | 28 | 26 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 30 | 29 | 30 | 29 | 30 | 30 | 30 | 29 | 31 | 31 | 32 | 31 | 30 | 30 | 29 | 29 | 28 | 29 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | E 8 | N 9 | S 8 | S 8 | NNW 8 | S 8 | S 7 | NNW 7 | N 8 | N 9 | N 9 | NNW 9 | ESE 8 | N 8 | SSE 7 | SSE 10 | SSE 9 | SSE 8 | SSE 9 | S 9 |
31 | 185 | 33 | 20 | 191 | 18 | 17 | 86 | 157 | 177 | 173 | 101 | 74 | 30 | 48 | 141 | 197 | 68 | 144 | 96 | |
Swell 2 Height (m) Direction Period (s) | SSE 9 | S 8 | E 9 | NE 8 | S 8 | ENE 8 | ENE 9 | S 7 | E 9 | SE 9 | E 9 | SE 5 | NNW 8 | E 14 | N 8 | N 7 | E 14 | S 11 | E 14 | E 13 |
26 | 35 | 14 | 11 | 19 | 7 | 15 | 16 | 13 | 22 | 14 | 27 | 72 | 63 | 29 | 26 | 62 | 85 | 97 | 92 | |
Swell 3 Height (m) Direction Period (s) | NE 10 | NE 10 | NE 9 | E 9 | NE 8 | E 9 | ESE 10 | E 9 | S 7 | S 7 | E 16 | E 8 | S 7 | S 7 | SSE 12 | E 14 | NNW 6 | E 14 | N 6 | N 6 |
33 | 33 | 12 | 14 | 11 | 6 | 10 | 14 | 8 | 8 | 20 | 36 | 9 | 8 | 49 | 64 | 8 | 97 | 3 | 3 | |
Wind waves Height (m) Direction Period (s) | NNW 7 | WNW 6 | NNW 9 | NNW 9 | — | NNW 8 | N 8 | — | NE 3 | NNE 3 | SE 6 | — | — | SE 7 | ESE 6 | SE 7 | ESE 6 | E 7 | ESE 7 | ESE 7 |
212 | 54 | 281 | 275 | — | 151 | 163 | — | 2 | 6 | 32 | — | — | 106 | 97 | 149 | 86 | 148 | 187 | 225 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 639 | 30 | 639 | 639 | 17 | 639 | 747 | 635 | 24 | 23 | 23 | 23 | 23 | 28 | 28 | 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.










