
Surf Forecasts:
Ikei Island surf forecast from 6 Sep 2026:
- Most powerful swell: Saturday 12 Sep, 9AM (local time) - 8ft (2.5m), 11s period, SE swell with 1,538 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 2.5m 11s and forecast to arrive on Saturday (Sep 12) at 9AM. 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 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 9AM (Sat 12th Sep) | 8ft (2.5m) 11s |
Table - best surf conditions forecast for Ikei Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a proper look at what’s on offer for Ikei Island over the next couple of weeks. Gotta be straight with you – it’s a tough stretch. We’ve got swell, sure, but the wind and conditions are just not playing ball for most of it.
Right off the bat, Ikei Island is an exposed reef setup, so it needs the right direction and clean conditions. For the first week and a half, every single day gets marked as poor surf conditions. We start on Sunday the 6th with a stormy vibe, strong cross-onshore wind at 19 mph, and lumpy, messy waves around 6 ft from the NE/N. The combined energy hits 240 (weak) then jumps to 536 (moderate) but it’s all junk. That trend sticks: Monday through to the middle of the month we see west-northwest winds, cross-shore, keeping the chop alive. On Tuesday the 14th, we get a brief window of onshore wind and waves around 5 ft, combined energy 293 (weak), but still a no-go. By the 15th and 16th, the wind swings east-southeast, cross-onshore, with swell bumping up to 6 ft and energy hitting 518 then 604 (moderate), but it’s lumpy and choppy – not surfable.
The water temperature is sitting at 84°F with a zero anomaly, so it’s dead average for the time of year. Nothing unusual there.
Finally, after a solid 12 days of junk, we get a flicker of hope. On Friday the 18th, the wind backs off to a gentle cross-offshore breeze from the south at 9 mph. The waves drop to 3 ft from the east, period short at 9 seconds, combined energy only 127 (weak), but it’s described as "clean." That’s the first hint of decency. Then Saturday the 19th morning, we’ve got a similar clean feel with 2 ft, 12-second period swell from the east-northeast, energy 118 (weak). It’s surfable, but very ordinary – a one out of ten. The afternoon gets interesting: a light offshore from the southwest at just 3 mph, 1 ft, 13-second period from the east-northeast, energy down to 65 (weak). The conditions finally clean up.
The standout window, such as it is, lands on Sunday the 20th. Both morning and afternoon go glassy – zero wind, calm conditions. Swell is tiny: 2 ft in the morning, 2 ft in the afternoon, from the east and east-northeast, with a long period of 12 seconds. Combined energy is 83 and 58 (both weak). This is the best on offer: clean, glassy, long-period groundswell. But at that size, it’s really only going to be micro-sessions for longboarders or the most desperate. For a reef like Ikei Island, the long period (over 11 seconds) is good for shape, but the height is just so small. It’s a true stand-out only because everything else is rubbish.
No real standouts for bigger surf in this run. It’s a long wait for that one clean, tiny day.
Rusty, signing off.
Short Range ForecastModerate rain (total 10mm), heaviest on Sun morning. Warm (max 28°C on Sun morning, min 26°C on Mon night). Winds decreasing (strong winds from the N on Sun afternoon, light winds from the NNW by Mon night). | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Thu morning. Warm (max 28°C on Wed morning, min 26°C on Wed night). Winds increasing (light winds from the NNE on Wed night, fresh winds from the E by Fri night). | ||||||||||||||||||||
Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | |||||||||||||||
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) | NE 6 | N 7 | N 8 | N 8 | NNW 7 | NNW 9 | NNW 9 | NNW 9 | NNW 8 | N 8 | N 8 | N 8 | N 8 | N 8 | NNW 8 | SE 8 | ESE 8 | SE 8 | SE 11 | SE 10 | SE 9 |
Wave Graph | |||||||||||||||||||||
232 | 456 | 577 | 383 | 186 | 295 | 336 | 443 | 300 | 186 | 217 | 115 | 137 | 144 | 120 | 368 | 567 | 497 | 1538 | 924 | 493 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | on | cross-on | cross-on | cross-on | on | on | on | on | on |
High Tide | 3:56PM1.47m | 2:26AM1.61m | 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 | ||||||||
Low Tide | 8:51PM1.18m | 9:48AM0.38m | 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 | ||||||||
6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | |
— | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:36 | — | |
mm | 5 | 2 | — | 1 | 2 | — | — | — | — | — | — | — | 3 | 1 | 3 | — | — | — | — | — | — |
Temp °C | 28 | 27 | 27 | 28 | 28 | 27 | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 29 | 26 | 27 | 29 | 31 | 30 | 30 | 29 | 27 | 29 | 29 | 29 | 30 | 30 | 30 | 29 | 28 | 27 | 29 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 8 | E 9 | E 9 | E 8 | SSE 9 | E 8 | SSE 8 | S 8 | S 8 | S 8 | S 7 | N 8 | N 8 | N 8 | NNW 8 | N 9 | N 9 | N 8 | SE 11 | SE 10 | S 10 |
96 | 80 | 71 | 22 | 26 | 19 | 14 | 21 | 19 | 10 | 10 | 115 | 137 | 144 | 120 | 101 | 78 | 45 | 1302 | 924 | 51 | |
Swell 2 Height (m) Direction Period (s) | E 14 | SSW 9 | S 9 | SSE 9 | NE 10 | S 8 | E 9 | E 9 | NE 8 | NE 8 | ENE 9 | ENE 9 | E 9 | E 8 | ESE 9 | E 15 | E 15 | E 14 | N 9 | N 8 | E 14 |
4 | 42 | 14 | 28 | 25 | 22 | 14 | 14 | 16 | 9 | 15 | 15 | 14 | 13 | 28 | 39 | 39 | 63 | 38 | 18 | 62 | |
Swell 3 Height (m) Direction Period (s) | E 14 | SSE 9 | SSW 9 | SSW 8 | E 8 | NE 9 | NE 9 | NE 8 | ESE 10 | ESE 10 | ESE 10 | S 7 | ESE 10 | SE 9 | S 7 | SW 8 | WNW 6 | N 8 | E 14 | E 14 | N 7 |
4 | 16 | 8 | 14 | 22 | 22 | 12 | 11 | 11 | 10 | 10 | 9 | 9 | 22 | 8 | 3 | 4 | 20 | 61 | 64 | 17 | |
Wind waves Height (m) Direction Period (s) | NE 6 | N 7 | N 8 | N 8 | NNW 7 | NNW 9 | NNW 9 | NNW 9 | NNW 8 | N 8 | N 8 | NE 8 | SE 7 | SE 5 | ESE 5 | SE 8 | ESE 8 | SE 8 | SE 11 | E 9 | SE 9 |
232 | 456 | 577 | 383 | 186 | 295 | 336 | 443 | 300 | 186 | 217 | 31 | 23 | 22 | 38 | 368 | 567 | 497 | 1538 | 6 | 493 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 825 | 758 | 758 | 639 | 774 | 44 | 639 | 639 | 639 | 639 | 639 | 639 | 24 | 26 | 639 | 639 | 639 | 639 | 639 | 639 | 639 |
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.










