Surf Forecasts:
Ikei Island surf forecast from 23 Aug 2026:
- Most powerful swell: Tuesday 25 Aug, 12PM (local time) - 16ft (5.0m), 16s period, E swell with 12,437 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 5.0m 16s and forecast to arrive on Tuesday (Aug 25) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 5.5m 9s period and expected on Wednesday (Aug 26) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 12PM (Tue 25th Aug) | 16ft (5.0m) 16s |
Table - best surf conditions forecast for Ikei Island over the next 16 days.
The Lowdown
Right, Rusty here. Let's break down what we've got.
The only break in the game for the next 16 days is Ikei Island. It's a reef set-up that's fairly consistent. The water temp is about 84°, which is normal for this time of year.
The first real surf kicks off on Monday, the 25th of August. A solid east swell pushes in at 15ft with a 16-second period. The combined energy is massive at (10869). Tuesday morning has a north crosswind that'll put a bit of texture on it, but the size is the story. This is big, powerful groundswell, over 8ft, so it's for experts only. Tuesday afternoon the wind cranks up to 22 mph from the north, making for lumpy conditions.
The standout is the morning of Tuesday the 25th of August. That east swell is right on the optimum direction for this reef, and the energy is off the charts. Crowds are "sometimes" possible. The 15ft, 16-second pulse is the biggest and most powerful of the whole stretch.
After that, it all goes sideways. Wednesday the 26th brings a near gale from the west at 37 mph, totally shutting things down. The swell drops fast, and from the 27th of August through to the 7th of September, it's just a run of poor surf with cross-onshore or strong cross-shore winds. The waves are tiny, 1ft to 5ft, with period dropping as low as 7 seconds, so it's all weak and choppy.
There's another spike around the 1st of September: Tuesday shows a 18ft swell from the ESE with a 12-second period and energy at (8990), but the wind is onshore from the ENE at 16 mph and the report calls it "poor surf conditions." Onshore wind over a reef is a no-go.
A few mornings on the 7th and 8th of September look a bit cleaner with light cross-offshore breezes and a small 4ft swell, but it's rated as marginal. Not worth the effort.
So, if you're an expert, the morning of Tuesday the 25th of August is the only window worth chasing.
Rusty.
Short Range ForecastHeavy rain (total 30mm), heaviest during Wed afternoon. Warm (max 30°C on Tue afternoon, min 27°C on Mon night). Winds increasing (light winds from the ENE on Mon afternoon, near gales from the WNW by Tue night). | Days 4-6 Weather SummaryHeavy rain (total 22mm), heaviest during Fri afternoon. Warm (max 29°C on Thu afternoon, min 27°C on Thu morning). Winds decreasing (strong winds from the SSE on Thu morning, moderate winds from the SE by Fri morning). | ||||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||||
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) | ESE 16 | ESE 16 | ESE 17 | E 16 | E 16 | ENE 14 | E 11 | E 10 | E 13 | E 13 | E 13 | ESE 7 | ESE 7 | ESE 7 | ENE 13 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 387 | 914 | 4293 | 10869 | 11725 | 6772 | 403 | 98 | 31 | 53 | 28 | 374 | 209 | 172 | 35 | 62 | 124 | 228 | 175 | 218 | 545 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross | cross | cross | off | cross-off | cross-off | cross | cross | cross-on | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | on |
High Tide | 5:37PM1.54m | 4:29AM1.66m | 6:03PM1.63m | 5:13AM1.77m | 6:27PM1.72m | 5:51AM1.87m | 6:51PM1.79m | 6:27AM1.94m | 7:15PM1.85m | 7:03AM1.98m | 7:40PM1.90m | 7:39AM1.97m | 8:05PM1.92m | ||||||||
Low Tide | 10:43AM0.49m | 10:53PM1.05m | 11:22AM0.37m | 11:29PM0.93m | 11:55AM0.28m | 00:01AM0.80m | 12:26PM0.22m | 00:32AM0.68m | 12:55PM0.20m | 1:03AM0.56m | 1:24PM0.23m | 1:35AM0.46m | 1:53PM0.30m | 2:09AM0.39m | |||||||
 |  |  |  | |  | |  | | | |  | | | | | | | | |  | |
 | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — |
 | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — |
mm | 1 | — | — | — | 1 | 7 | 4 | 9 | 8 | 4 | 3 | 3 | 1 | 5 | 3 | 2 | — | 1 | — | — | — |
Temp °C | 28 | 28 | 27 | 29 | 30 | 28 | 28 | 27 | 28 | 28 | 29 | 28 | 28 | 28 | 28 | 28 | 29 | 28 | 29 | 29 | 28 |
Feels °C | 31 | 29 | 30 | 29 | 30 | 23 | 23 | 23 | 25 | 27 | 29 | 28 | 31 | 30 | 30 | 29 | 30 | 29 | 31 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | ESE 16 | ESE 16 | ESE 17 | E 16 | E 16 | ENE 14 | E 11 | E 10 | E 13 | SW 10 | E 13 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 10 | S 9 | SSW 9 | SSW 9 | SSW 9 |
| kJ | 387 | 914 | 4293 | 10869 | 11725 | 6772 | 403 | 98 | 31 | 432 | 28 | 1488 | 926 | 724 | 543 | 389 | 283 | 133 | 188 | 143 | 76 |
Swell 2 Height (m) Direction Period (s) | SW 9 | ESE 18 | E 7 | SW 9 | SW 9 | SW 9 | N 9 | E 14 | — | WSW 11 | E 10 | E 12 | E 12 | ESE 7 | E 11 | S 8 | S 8 | SW 10 | ENE 12 | ENE 12 | ENE 11 |
| kJ | 73 | 454 | 77 | 64 | 39 | 20 | 59 | 34 | — | 435 | 18 | 26 | 11 | 172 | 21 | 133 | 82 | 115 | 47 | 27 | 24 |
Swell 3 Height (m) Direction Period (s) | ENE 11 | SW 9 | SW 9 | — | — | — | — | SE 10 | E 19 | E 13 | E 18 | E 16 | E 14 | ENE 15 | ENE 13 | E 9 | ENE 13 | ENE 12 | SE 11 | SW 9 | SW 10 |
| kJ | 24 | 52 | 39 | — | — | — | — | 16 | 7 | 53 | 6 | 20 | 16 | 42 | 35 | 40 | 55 | 50 | 4 | 3 | 15 |
Wind waves Height (m) Direction Period (s) | E 6 | E 6 | — | — | NNE 6 | N 9 | WNW 9 | SW 9 | S 9 | SSE 8 | S 11 | ESE 7 | ESE 7 | S 7 | SE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 8 |
| kJ | 29 | 66 | — | — | 291 | 3237 | 3658 | 5087 | 2326 | 1251 | 2730 | 374 | 209 | 124 | 206 | 62 | 124 | 228 | 175 | 218 | 545 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 26 | 26 | 24 | 44 | 635 | 635 | 635 | 635 | 635 | 734 | 685 | 44 | 26 | 44 | 39 | 683 | 979 | 639 | 672 | 26 | 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.
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