Surf Forecasts:
Ikei Island surf forecast from 13 Aug 2026:
- Best quality surf: Thursday 13 Aug, 12PM (local time) - 1.5ft (0.5m), 10s period, ENE swell with glassy winds.
- Most powerful swell: Thursday 20 Aug, 3PM (local time) - 8ft (2.5m), 9s period, SE swell with 951 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 12PM (local time) - 1.5ft (0.5m), 10s period with ENE 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 Thursday (Aug 13) at 12PM. 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 2.5m 9s and forecast to arrive on Thursday (Aug 20) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 8s period and expected on Thursday (Aug 13) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Thu 13th Aug) | 1.5ft (0.5m) 10s |
| Best Surf | 12PM (Thu 13th Aug) | 1.5ft (0.5m) 10s |
| Most Powerful | 3PM (Thu 20th Aug) | 8ft (2.5m) 9s |
Table - best surf conditions forecast for Ikei Island over the next 16 days.
The Lowdown
Alright, this is Rusty, and I’m looking at the outlook for Ikei Island. There’s a bit of a quiet spell to start, but the second half of the forecast window has some real promise.
Right now, the water temp is sitting at 29°C, which is about average for this time of year, so no surprises there.
The next few days are pretty flat and ordinary. We’ve got glassy conditions Thursday the 13th and Friday the 14th, but the waves are tiny—around 1ft to 2ft with a weak, short-period ENE swell. The combined energy is low (74 or less), so it’s really just board-floaters out there. Saturday the 15th stays small with glassy mornings, but still nothing to get excited about. From Sunday the 16th through to the 23rd, it’s a rough run. The wind turns onshore and picks up, and the swell stays small or comes in with a messy short period. The surf quality drops hard, and there’s a stretch where the combined energy gets moderate (131 to 879), but the wind and chop ruin it. On the 20th, the swell jumps to 8ft to 12ft from the ESE-SE, but with a fresh cross-shore wind and lumpy conditions, it’s more of a kite-surfing show than a paddle session. That period of poor surf lasts about a week.
Then things start to turn around. On Tuesday the 25th, we finally get some solid groundswell. The morning sees a 2ft E swell at 16 seconds, but the energy is ramping up (503). By the afternoon, it’s 4ft from the east at 15 seconds, with a combined energy of 718. The wind is light and glassy, and the conditions are expected to be very good. This is a long-period groundswell, so it’ll handle the reef well and offer clean lines, though the set gaps might be a bit longer. Wednesday the 26th keeps the energy up (711) with 5ft E swell at 14 seconds, and light onshore wind, but it’s a bit more marginal. Thursday the 27th is a standout: glassy in the morning with 4ft E swell, and by the afternoon we get offshore wind from the west, 4ft E swell at 14 seconds, and very good conditions. Friday the 28th is the pick of the bunch—clear skies, light offshore breeze, 5ft to 5ft swell from the ENE at 14 seconds, and combined energy pushing 980. The reef at Ikei Island should be offering some long, clean walls. This is the best window for intermediate to advanced surfers, as the swell is a bit too much for beginners.
So, to sum it up: the first week is a write-off, but the last few days from the 25th to the 28th are looking really promising. Thursday the 27th afternoon and Friday the 28th are the standouts. Get on it.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Fri afternoon. Warm (max 29°C on Fri afternoon, min 27°C on Thu morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sun night. Warm (max 29°C on Sun morning, min 26°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | |||||||||||||||
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) | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 9 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | SE 5 | SE 6 | SE 5 | ENE 10 | ENE 10 | ENE 10 | E 7 | E 8 | ESE 8 |
Wave Graph | |||||||||||||||||||||
57 | 58 | 39 | 19 | 31 | 17 | 68 | 66 | 58 | 58 | 57 | 57 | 62 | 67 | 62 | 55 | 77 | 59 | 83 | 127 | 422 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | glassy | glassy | glassy | glassy | glassy | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | cross-on | cross-on | cross-on |
High Tide | 7:38PM1.91m | 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 | 1:10PM0.01m | 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 | — | — | 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 | — | 1 | 2 | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | 2 |
Temp °C | 28 | 28 | 27 | 28 | 29 | 27 | 29 | 29 | 28 | 29 | 29 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 29 | 29 | 28 |
Feels °C | 33 | 34 | 32 | 34 | 34 | 32 | 33 | 33 | 33 | 33 | 32 | 29 | 30 | 29 | 29 | 30 | 29 | 30 | 33 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | SW 8 | S 8 | SW 9 | SW 9 | SSW 9 | SSW 9 | SSW 9 | S 8 | ENE 10 | E 7 | E 8 | S 7 |
169 | 86 | 84 | 144 | 86 | 65 | 84 | 82 | 57 | 57 | 41 | 81 | 65 | 53 | 50 | 53 | 88 | 59 | 83 | 127 | 10 | |
Swell 2 Height (m) Direction Period (s) | ENE 10 | SW 8 | SW 9 | ENE 10 | SW 8 | SW 8 | ENE 11 | ENE 11 | SSW 9 | S 8 | SW 8 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | S 7 | ENE 10 | S 7 | SSW 8 |
57 | 42 | 50 | 19 | 33 | 30 | 68 | 66 | 53 | 41 | 42 | 57 | 57 | 56 | 55 | 55 | 77 | 26 | 38 | 9 | 14 | |
Swell 3 Height (m) Direction Period (s) | N 7 | ENE 10 | ENE 10 | E 5 | ENE 10 | ENE 9 | SW 8 | SW 8 | ENE 10 | ENE 10 | ENE 10 | S 8 | S 8 | S 8 | S 8 | S 7 | ESE 10 | SW 8 | SW 9 | SSW 8 | SW 10 |
17 | 58 | 39 | 5 | 31 | 17 | 24 | 20 | 58 | 58 | 57 | 28 | 19 | 19 | 10 | 15 | 10 | 18 | 12 | 12 | 14 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | ESE 5 | ESE 5 | SE 5 | SE 6 | SE 5 | SE 5 | E 5 | ENE 5 | S 7 | — | ESE 8 |
— | — | — | — | — | — | — | — | — | — | 7 | 24 | 62 | 67 | 62 | 35 | 21 | 39 | 25 | — | 422 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 26 | 26 | 30 | 26 | 0 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 23 | 31 | 26 |
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.











