Surf Forecasts:
Ikei Island surf forecast from 18 Aug 2026:
- Most powerful swell: Wednesday 26 Aug, 3AM (local time) - 8ft (2.5m), 14s period, ESE swell with 2,412 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 14s and forecast to arrive on Wednesday (Aug 26) at 3AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 9s period and expected on Friday (Aug 21) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 3AM (Wed 26th Aug) | 8ft (2.5m) 14s |
Table - best surf conditions forecast for Ikei Island over the next 16 days.
The Lowdown
Alright folks, this is Rusty. We’ve had a rough go of it at Ikei Island for a spell, but don’t leave the island just yet. The first week is a total washout, but the second week turns into a beast for the hardcore crew.
From now through the end of August, it’s all bad. Risk of thunderstorms and strong, choppy winds from the E and ESE blowing 18 to 28 mph. The swell is weak and short-period, up to about 5 ft, but it’s all lumped up. The wave energy is weak to moderate at best. Don’t even think about it.
Everything shifts on Wednesday, August 26th. The wind goes light and clean from the NW at 9 mph. The swell comes up to 8 ft from the ESE, with a long 14-second period, and the combined energy jumps to 2965. The report says it’s excellent for experienced surfers. This is a big swell, over 8 ft, so leave the foam boards at home.
Thursday, August 27th is the big one. Morning sees a massive 18 ft groundswell from the ESE at 15 seconds, with a perfect offshore wind from the west at 12 mph. Combined energy is an insane 13765. This is strictly for experts. That long period will throw some heavy, clean lines down the reef. The afternoon is even bigger at 26 ft from the east, but it may be too big for the spot. Thursday morning is the call.
Friday, August 28th eases to a 16 ft swell from the SE, but the wind goes light cross-on from the north. Still a beast for experts, with energy at 11714.
From Saturday, August 29th through the 3rd of September, the swell stays enormous, from 8 ft to 26 ft, but the wind turns onshore or on it, making it messy. The energy is still huge, but the quality is gone.
The absolute standout is Thursday, August 27th morning. For the experts, that offshore wind and 18 ft groundswell is a dream. It’s a consistent reef, so you might have company, but the waves will be worth the paddle.
Rusty signing off.
Short Range ForecastHeavy rain (total 50mm), heaviest during Fri morning. Warm (max 28°C on Tue night, min 26°C on Fri morning). Mainly fresh winds. | Days 5-7 Weather SummaryHeavy rain (total 36mm), heaviest during Fri night. Warm (max 28°C on Sat morning, min 26°C on Fri night). Mainly strong winds. | ||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | ||||||||||||||
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) | E 7 | E 7 | E 7 | ESE 7 | ESE 8 | ESE 7 | SE 8 | SE 7 | SSE 8 | SE 9 | ENE 9 | SE 8 | E 13 | E 14 | E 14 | ENE 13 | ENE 11 | ENE 10 | ESE 6 |
Wave Graph  | |||||||||||||||||||
 kJ | 229 | 250 | 388 | 482 | 372 | 320 | 579 | 235 | 0 | 1839 | 8 | 0 | 14 | 14 | 16 | 17 | 22 | 21 | 122 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | cross-on | cross-on | cross-off | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 10:03PM1.74m | 10:55AM1.45m | 10:33PM1.66m | 12:06PM1.31m | 11:12PM1.57m | 2:12PM1.25m | 00:18AM1.49m | 4:20PM1.33m | 2:05AM1.47m | 5:07PM1.43m | 3:32AM1.54m | 5:37PM1.54m | |||||||
Low Tide | 4:39AM0.57m | 4:20PM0.90m | 5:32AM0.64m | 4:53PM1.05m | 6:48AM0.70m | 5:52PM1.18m | 8:29AM0.69m | 8:25PM1.23m | 9:50AM0.60m | 10:05PM1.16m | 10:43AM0.49m | 10:53PM1.05m | |||||||
 |  | | | | | | | | | | | | | | | | | | |
 | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — |
 | 7:01 | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | — | 6:55 | — |
mm | 3 | 4 | 5 | 11 | 3 | 3 | 10 | 6 | 5 | 11 | 3 | 3 | 8 | 2 | 2 | 3 | 2 | 2 | 2 |
Temp °C | 28 | 28 | 28 | 27 | 28 | 27 | 27 | 26 | 27 | 27 | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 28 | 27 |
Feels °C | 29 | 29 | 29 | 28 | 29 | 28 | 29 | 26 | 32 | 28 | 28 | 28 | 24 | 26 | 26 | 26 | 27 | 28 | 27 |
Swell 1 Height (m) Direction Period (s) | SW 8 | SW 8 | S 8 | S 8 | ESE 8 | S 9 | S 9 | S 9 | SW 9 | SW 10 | SW 9 | SW 10 | E 13 | W 8 | W 8 | ENE 10 | ENE 11 | ENE 10 | SSW 8 |
| kJ | 18 | 10 | 11 | 34 | 372 | 205 | 160 | 340 | 13 | 207 | 347 | 185 | 14 | 19 | 10 | 9 | 22 | 21 | 240 |
Swell 2 Height (m) Direction Period (s) | S 7 | S 8 | SW 9 | SW 8 | S 10 | WSW 9 | SW 9 | ESE 10 | SW 9 | SSW 10 | ENE 9 | — | E 13 | W 8 | ENE 9 | W 9 | W 9 | ESE 11 | ENE 10 |
| kJ | 9 | 11 | 12 | 3 | 118 | 8 | 3 | 19 | 230 | 511 | 8 | — | 14 | 5 | 8 | 6 | 6 | 11 | 19 |
Swell 3 Height (m) Direction Period (s) | ESE 10 | SE 10 | — | — | SW 8 | — | SW 9 | ESE 10 | — | NE 9 | E 10 | — | — | E 14 | E 14 | ENE 13 | E 13 | W 8 | E 12 |
| kJ | 10 | 4 | — | — | 3 | — | 12 | 10 | — | 3 | 2 | — | — | 14 | 16 | 17 | 14 | 5 | 26 |
Wind waves Height (m) Direction Period (s) | E 7 | E 7 | E 7 | ESE 7 | SE 8 | ESE 7 | SE 8 | SE 7 | SSE 8 | SE 9 | SSE 9 | SE 8 | SSE 8 | S 9 | SSE 9 | SSE 9 | S 9 | SSE 8 | ESE 6 |
| kJ | 229 | 250 | 388 | 482 | 270 | 320 | 579 | 235 | 1093 | 1839 | 1486 | 1147 | 1449 | 1726 | 1208 | 1156 | 777 | 475 | 122 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 26 | 747 | 871 | 627 | 635 | 635 | 26 | 627 | 26 | 635 | 26 | 635 | 627 | 639 | 627 | 627 | 645 | 661 | 635 |
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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