Surf Forecasts:
Ikei Island surf forecast from 13 Aug 2026:
- Best quality surf: Friday 14 Aug, 3AM (local time) - 1.5ft (0.5m), 10s period, E swell with glassy winds.
- Most powerful swell: Tuesday 18 Aug, 3PM (local time) - 3.5ft (1.1m), 9s period, E swell with 202 kJ wave energy.
- Next surfable swell (1★+): Friday 14 Aug, 3AM (local time) - 1.5ft (0.5m), 10s period with E 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 Friday (Aug 14) at 3AM. The primary swell is predicted to be 0.5m and 10s period. 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 1.1m 9s and forecast to arrive on Tuesday (Aug 18) at 3PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 9s period and expected on Thursday (Aug 20) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Fri 14th Aug) | 1.5ft (0.5m) 10s |
| Best Surf | 3AM (Fri 14th Aug) | 1.5ft (0.5m) 10s |
| Most Powerful | 3PM (Tue 18th Aug) | 3.5ft (1.1m) 9s |
Table - best surf conditions forecast for Ikei Island over the next 16 days.
The Lowdown
Alright, let’s talk about Ikei Island. This is a reef setup that’s fairly consistent, but honestly, the first week and a half is a write-off. We’re looking at a long stretch of tiny, messy, or wind-affected surf from now right through to Saturday the 22nd of August. There’s a real gap there with nothing worth getting wet for – just small, choppy leftovers and onshore slop. The best we get in that first week is a tiny 2ft on Thursday the 13th with glassy conditions, but the energy is weak (58). It’s surfable, but barely.
The real story here kicks off on Sunday the 23rd of August. That’s your standout. We’ve got a solid groundswell arriving, and it’s a big one. Sunday morning sees 5ft from the ESE with a very long 16-second period, and the energy is massive (1310). It’s glassy, too – just a slight air moving. This is proper, clean surf, but with the size and power, it’s really only for experienced surfers. By Sunday afternoon, it’s pushing 7ft, and by Monday the 24th, we’re looking at 8ft with the same long-period ESE swell. That morning is dead calm and glassy (3777 energy), and the afternoon stays clean with a slight cross-offshore wind. This is the peak – big, clean, powerful waves. Ikei Island is exposed to the NE, and this ESE swell is going to wrap in nicely.
Monday and Tuesday the 25th are still firing. Tuesday sees the swell easing slightly to 8ft from the E, but it’s still a long 15-second period, and we get proper offshore wind from the WSW in the morning. The energy is still through the roof (2246). That afternoon, it’s 7ft with a 14-second period and a clean offshore breeze from the west. An incredible run.
Water temp is about 84°, which is pretty average for the time of year, so no surprises there.
The swell settles through the rest of the week. Wednesday the 26th is still very good, with 5ft and offshore winds, but the energy drops to a moderate 787. By Thursday, it’s down to 4ft, and by Friday the 28th, we’re back to small, ordinary surf. That whole window from the 23rd to the 26th is your golden ticket. Big, clean, powerful waves – but don’t bring a learner board.
Crowds at Ikei can be an issue sometimes, so on the best days, you might have some company.
Rusty
Short Range ForecastModerate rain (total 10mm), heaviest on Sat night. Warm (max 29°C on Fri morning, min 27°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Mon morning. Warm (max 28°C on Mon morning, min 26°C on Sun night). Wind will be generally light. | ||||||||||||||||||
Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | ||||||||||||||
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) | ENE 10 | ENE 10 | ENE 10 | ENE 9 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | E 9 | E 6 | E 6 | E 6 | E 6 |
Wave Graph  | |||||||||||||||||||
 kJ | 39 | 19 | 31 | 17 | 68 | 66 | 58 | 58 | 57 | 57 | 57 | 56 | 55 | 52 | 202 | 85 | 127 | 113 | 130 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | glassy | glassy | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | on | on | on | on | cross-on |
High Tide | 7:16AM2.07m | 8:09PM1.92m | 7:59AM2.02m | 8:39PM1.91m | 8:40AM1.91m | 9:07PM1.87m | 9:22AM1.77m | 9:35PM1.82m | 10:05AM1.61m | 10:03PM1.74m | 10:55AM1.45m | 10:33PM1.66m | |||||||
Low Tide | 1:19AM0.61m | 1:47PM0.08m | 1:58AM0.52m | 2:21PM0.20m | 2:37AM0.48m | 2:53PM0.37m | 3:15AM0.47m | 3:23PM0.55m | 3:55AM0.51m | 3:51PM0.73m | 4:39AM0.57m | 4:20PM0.90m | |||||||
 |  |  | | | |  | | | |  |  | | | |  | | |  | |
 | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — |
 | 7:06 | — | 7:06 | — | — | 7:05 | — | — | 7:04 | — | — | 7:02 | — | — | 7:01 | — | — | 7:00 | — |
mm | — | — | 2 | — | — | 2 | 6 | — | — | — | 1 | — | — | — | — | — | — | — | 5 |
Temp °C | 27 | 29 | 29 | 27 | 29 | 29 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 32 | 34 | 35 | 32 | 33 | 33 | 30 | 30 | 30 | 29 | 30 | 29 | 29 | 30 | 29 | 29 | 29 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 9 | S 8 | S 8 | SSW 8 | S 8 | S 8 | S 8 | SW 8 | SW 9 | SW 9 | SSW 9 | ENE 10 | ENE 10 | SW 9 | ENE 9 | SSW 9 | ENE 9 | SSW 10 |
| kJ | 84 | 117 | 86 | 65 | 112 | 82 | 55 | 42 | 35 | 65 | 59 | 52 | 55 | 52 | 38 | 50 | 16 | 34 | 18 |
Swell 2 Height (m) Direction Period (s) | SW 9 | SW 8 | SW 8 | SW 8 | ENE 11 | ENE 11 | ENE 10 | SW 8 | S 8 | ENE 10 | ENE 10 | ENE 10 | SSW 9 | SW 8 | S 9 | S 9 | SW 9 | SSW 8 | SSE 8 |
| kJ | 50 | 34 | 33 | 30 | 68 | 66 | 58 | 45 | 28 | 57 | 57 | 56 | 52 | 35 | 40 | 39 | 12 | 24 | 14 |
Swell 3 Height (m) Direction Period (s) | ENE 10 | ENE 10 | ENE 10 | ENE 9 | E 4 | SW 8 | SW 8 | ENE 10 | ENE 10 | S 8 | S 7 | S 8 | S 7 | S 7 | ESE 10 | SW 8 | S 8 | WSW 8 | SW 10 |
| kJ | 39 | 19 | 31 | 17 | 2 | 31 | 34 | 58 | 57 | 30 | 27 | 20 | 17 | 16 | 11 | 11 | 5 | 7 | 14 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | ESE 4 | ESE 5 | SE 5 | ESE 5 | SE 5 | SE 5 | ESE 5 | ESE 5 | E 9 | E 6 | E 6 | E 6 | E 6 |
| kJ | — | — | — | — | — | — | 29 | 31 | 23 | 27 | 29 | 24 | 25 | 23 | 202 | 85 | 127 | 113 | 130 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 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.
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