Surf Forecasts:
Ikei Island surf forecast from 20 Aug 2026:
- Best quality surf: Wednesday 26 Aug, 3AM (local time) - 7.5ft (2.3m), 11s period, N swell with glassy winds.
- Most powerful swell: Tuesday 25 Aug, 6AM (local time) - 13ft (4.0m), 17s period, E swell with 8,626 kJ wave energy.
- Next surfable swell (1★+): Wednesday 26 Aug, 3AM (local time) - 7.5ft (2.3m), 11s period with N 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 26) at 3AM. The primary swell is predicted to be 2.3m and 11s period with a secondary swell of 1.0m and 13s. 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 4.0m 17s and forecast to arrive on Tuesday (Aug 25) at 6AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.5m 10s period and expected on Wednesday (Aug 26) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Wed 26th Aug) | 7.5ft (2.3m) 11s |
| Best Surf | 3AM (Wed 26th Aug) | 7.5ft (2.3m) 11s |
| Most Powerful | 6AM (Tue 25th Aug) | 13ft (4.0m) 17s |
Table - best surf conditions forecast for Ikei Island over the next 16 days.
The Lowdown
Alright, listen up. Rusty here. Let's be real, this Ikei Island forecast is a real "hurry up and wait" kinda deal. We got a whole lot of flat and funky weather to burn through before it even starts talkin’ to us proper.
Right now, Friday the 21st right through Monday the 24th, it's a total washout. We’re looking at strong cross-shore and cross-onshore winds, stormy skies, and windswell that's just a mess. The wave energy is weak, and the only thing you’ll be catching is a cold. Save your gas and leave the stick at home this weekend.
Then, BAM. Tuesday the 25th of August. This is the one to circle. A serious, deep-ocean groundswell shows up. We’re talkin’ a solid 13 to 14 feet from the East with a gnarly 17-second period. The combined energy is screaming, clocking in at 8449—that’s a lot of juice. This is a powerful, proper wave. The wind is blowin’ onshore from the ENE at about 12 mph, so it won't be perfect, just big and rumbling. At over 8 feet, this is expert territory. You better have your duck-diving dialed.
Now, Wednesday the 26th is the quality pick. The swell backs off to a still-juicy 10 feet from the NNW, period at 11 seconds. But the magic is the wind. It goes damn-near glassy. NNE at 3 mph. That morning session is gonna be as clean as a whistle. The energy is still solid (2059), and those lines will be peeling with no chop. It's the best-looking, cleanest surf of the whole run. Just know the spot can have a crowd on it sometimes.
After that beauty, the swell fades. Thursday and Friday are back to small, weak waves—waist high at best—with onshore breezes. The rest of the forecast into September looks like a slow letdown: a few pulses of 5 to 7 foot swell roll through, but the wind stays ugly and the energy never really gets going. By the time we hit September, it's a proper drought.
So here’s the plan: sit out the weekend. Saddle up for Tuesday the 25th if you’re a charger looking for a heavy, powerful wall. If you want the cleanest, glassiest surf of the run, make sure you're paddling out at dawn on Wednesday the 26th.
-Rusty
Short Range ForecastHeavy rain (total 21mm), heaviest during Thu night. Warm (max 28°C on Sat morning, min 27°C on Thu night). Winds increasing (moderate winds from the SE on Thu night, strong winds from the SSE by Fri afternoon). | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Sun night. Warm (max 30°C on Wed afternoon, min 27°C on Sun night). Winds decreasing (fresh winds from the E on Mon morning, calm by Tue night). | ||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
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 9 | ESE 6 | SSE 8 | ENE 9 | SSE 9 | E 9 | E 13 | ESE 6 | ESE 6 | ESE 6 | ESE 17 | ESE 17 | ESE 18 | E 17 | E 16 | ENE 14 | NNW 11 | E 11 | E 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 586 | 165 | 0 | 16 | 0 | 8 | 13 | 119 | 114 | 138 | 1282 | 2665 | 5764 | 8367 | 6124 | 1519 | 1922 | 163 | 78 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | glassy | on | on |
High Tide | 11:12PM1.57m | 2:12PM1.25m | 00:18AM1.49m | 4:20PM1.33m | 2:05AM1.47m | 5:07PM1.43m | 3:32AM1.54m | 5:37PM1.54m | 4:29AM1.66m | 6:03PM1.63m | 5:13AM1.77m | 6:27PM1.72m | |||||||
Low Tide | 6:48AM0.70m | 5:52PM1.18m | 8:29AM0.69m | 8:25PM1.23m | 9:50AM0.60m | 10:05PM1.16m | 10:43AM0.49m | 10:53PM1.05m | 11:22AM0.37m | 11:29PM0.93m | 11:55AM0.28m | 00:01AM0.80m | |||||||
 |  | | | | | | | | | | |  |  | | | |  |  | |
 | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — |
 | 7:00 | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — |
mm | 4 | 3 | 2 | 2 | 1 | 2 | 4 | 1 | 2 | 2 | 1 | 1 | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 28 | 29 | 29 | 27 | 29 | 30 | 28 |
Feels °C | 29 | 26 | 25 | 24 | 26 | 27 | 27 | 29 | 29 | 28 | 29 | 29 | 30 | 31 | 31 | 31 | 33 | 34 | 32 |
Swell 1 Height (m) Direction Period (s) | SW 9 | S 8 | SW 10 | SW 10 | — | E 9 | E 9 | S 9 | S 9 | SSW 9 | ESE 17 | ESE 17 | ESE 18 | E 17 | E 16 | ENE 14 | NNW 11 | E 11 | WNW 10 |
| kJ | 13 | 200 | 4 | 33 | — | 6 | 6 | 440 | 372 | 243 | 1282 | 2665 | 5764 | 8367 | 6124 | 1519 | 1922 | 163 | 1357 |
Swell 2 Height (m) Direction Period (s) | SW 9 | ESE 11 | WSW 10 | ENE 9 | — | ENE 9 | E 16 | ESE 14 | ESE 13 | ESE 16 | S 8 | S 9 | S 8 | SSW 9 | SSW 9 | N 8 | E 11 | SE 10 | E 9 |
| kJ | 12 | 11 | 10 | 16 | — | 8 | 5 | 41 | 35 | 138 | 147 | 181 | 76 | 62 | 44 | 368 | 119 | 16 | 78 |
Swell 3 Height (m) Direction Period (s) | ESE 10 | ESE 11 | — | — | — | — | E 13 | — | ENE 10 | ESE 12 | SE 9 | ENE 10 | ENE 10 | — | — | SSW 9 | SE 11 | SE 11 | E 13 |
| kJ | 10 | 11 | — | — | — | — | 13 | — | 9 | 58 | 12 | 62 | 36 | — | — | 56 | 18 | 18 | 32 |
Wind waves Height (m) Direction Period (s) | SE 9 | ESE 6 | SSE 8 | SSE 9 | SSE 9 | SSE 9 | SSE 8 | ESE 6 | ESE 6 | ESE 6 | E 6 | E 6 | E 7 | NNE 5 | N 6 | NW 6 | W 8 | W 10 | SSW 8 |
| kJ | 586 | 165 | 1516 | 2281 | 1658 | 1461 | 614 | 119 | 114 | 122 | 116 | 163 | 92 | 82 | 212 | 229 | 1567 | 4378 | 898 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 39 | 627 | 627 | 627 | 635 | 627 | 627 | 639 | 639 | 639 | 734 | 639 | 26 | 24 | 24 | 23 | 0 | 24 | 23 |
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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