
Surf Forecasts:
Ikei Island surf forecast from 12 Sep 2026:
- Most powerful swell: Sunday 20 Sep, 3AM (local time) - 8ft (2.5m), 17s period, E swell with 4,185 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 17s and forecast to arrive on Sunday (Sep 20) 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 0.4m 8s period and expected on Saturday (Sep 19) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 3AM (Sun 20th Sep) | 8ft (2.5m) 17s |
Table - best surf conditions forecast for Ikei Island over the next 16 days.
The Lowdown
Alright, let’s get real about what’s on offer out at Ikei Island (Okinawa).
Right now, the outlook is bleak. Clean waves? Not for a while. The whole 16-day window is pretty much a write-off. We’ve got a long, heartbreaking stretch ahead with nearly no surf worth paddling out for. The first few days are especially flat and messy, but even when the swell tries to pick up, the wind just destroys it.
From Sunday the 13th through the morning of Monday the 21st, it’s all poor conditions. On the 13th, we’ve got a tiny 2 ft easterly swell with a long 14-second period, but it’s blown out by onshore winds. The combined energy is weak (171). That same story holds for Monday the 14th, Tuesday the 15th, and Wednesday the 16th—swell around 3 ft to 4 ft, mostly from the east, but the wind is always onshore or cross-onshore. Tuesdays morning session might get a rating as “marginal,” but that’s a generous call. It’s not going to be fun.
Thursday the 17th through Saturday the 19th is even worse—dropping back to 2 ft to 1 ft and cross-onshore breezes. The water temp is about average for the time of year, nothing weird there. But the surf? Missing in action.
Now, Sunday the 20th is where things get interesting, but not for the faint-hearted. A big pulse of easterly swell rolls in at 10 ft, period of 16 seconds. That’s a very long period groundswell, which at Ikei Island—a reef break—should actually shape up nicely in theory. But here’s the gut-punch: the wind is howling from the north and NNW at 25 mph, strong cross-shore, creating messy cross-chop. The combined energy is massive (5200), but the surf quality is marked as poor. This setup looks more interesting for kite surfing than paddle surfing. Only an expert should even be looking at this.
Monday the 21st sees the swell drop to 5 ft and 4 ft from the ENE with a 13-second period, and the wind is cross-offshore from the NW at 31 mph. The wave state is actually described as “clean,” which is rare here. The combined energy is still moderate to strong (930). Still, with near gale-force winds, it’s a tough paddle and only for experienced surfers.
After that, from Tuesday the 22nd onward, it fades back to tiny, weak, and blown out. By the 25th of September, we’re down to 1 ft again with onshore winds. The final days of the 16-day window see another rise in swell on the 27th and 28th—7 ft and 8 ft from the east with a 12-second period—but again, cross-onshore winds gusting up to 34 mph. That’s blown out and dangerous, with combined energy in the thousands (1277 and 2717). Only a true expert would even consider it, and even then, it’s a question of whether the wind lets you get a wave.
To be honest, there isn’t a single standout session in this whole forecast. The biggest windows of decent swell are all accompanied by winds that kill the quality. If you’re desperate, the cleanest conditions of the whole period are the morning of Monday the 21st, but that’s for experts only. For everyone else, it’s a waiting game. The good news is the area is usually consistent, so this run won’t last forever.
Stay patient.
Rusty
Short Range ForecastModerate rain (total 16mm), heaviest on Mon night. Warm (max 29°C on Mon morning, min 27°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Wed afternoon. Warm (max 29°C on Fri afternoon, min 27°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | ||||||||||||||
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 14 | E 14 | E 14 | ESE 8 | ESE 8 | E 9 | E 9 | E 9 | E 10 | E 10 | E 10 | E 10 | E 14 | E 9 | E 9 | E 13 | E 9 | E 9 | E 8 |
Wave Graph | |||||||||||||||||||
62 | 97 | 101 | 159 | 180 | 181 | 190 | 169 | 220 | 225 | 190 | 151 | 148 | 110 | 106 | 87 | 73 | 73 | 69 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | on | on | cross-on | on | on | on | on | on | on | on | on | on | cross-on |
High Tide | 7:43AM1.98m | 7:53PM1.95m | 8:21AM1.89m | 8:18PM1.91m | 8:59AM1.76m | 8:42PM1.85m | 9:37AM1.62m | 9:07PM1.77m | 10:22AM1.47m | 9:34PM1.67m | 11:24AM1.33m | 10:07PM1.56m | |||||||
Low Tide | 1:33AM0.31m | 1:48PM0.39m | 2:06AM0.28m | 2:16PM0.54m | 2:40AM0.30m | 2:43PM0.69m | 3:15AM0.36m | 3:08PM0.83m | 3:52AM0.46m | 3:34PM0.97m | 4:39AM0.58m | 4:02PM1.10m | |||||||
— | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | |
6:36 | — | 6:35 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | |
mm | — | — | 3 | 2 | — | — | 7 | 4 | — | — | — | 2 | 2 | 1 | 2 | 1 | 1 | — | — |
Temp °C | 28 | 28 | 28 | 27 | 29 | 29 | 27 | 29 | 29 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 29 | 27 |
Feels °C | 31 | 30 | 29 | 29 | 32 | 32 | 29 | 31 | 32 | 30 | 32 | 31 | 30 | 31 | 31 | 30 | 31 | 31 | 29 |
Swell 1 Height (m) Direction Period (s) | E 14 | ESE 6 | ESE 7 | E 13 | ESE 8 | E 9 | E 9 | E 9 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 8 |
62 | 45 | 91 | 92 | 180 | 181 | 190 | 169 | 220 | 225 | 190 | 151 | 142 | 110 | 106 | 78 | 73 | 73 | 69 | |
Swell 2 Height (m) Direction Period (s) | NNW 6 | E 14 | E 14 | N 5 | ENE 13 | E 13 | ENE 13 | ENE 13 | NW 6 | NW 5 | NNW 6 | NNW 7 | NNW 7 | NNW 6 | E 13 | E 13 | ENE 12 | ENE 12 | S 8 |
13 | 97 | 101 | 5 | 58 | 55 | 58 | 53 | 9 | 7 | 16 | 36 | 37 | 16 | 87 | 87 | 50 | 48 | 21 | |
Swell 3 Height (m) Direction Period (s) | S 7 | ESE 9 | S 6 | S 6 | N 5 | N 5 | — | NW 7 | ENE 12 | E 16 | ENE 14 | ENE 14 | E 14 | E 13 | NNW 6 | NNW 7 | N 7 | S 8 | ENE 12 |
14 | 29 | 3 | 3 | 2 | 2 | — | 11 | 30 | 20 | 63 | 63 | 148 | 90 | 15 | 15 | 15 | 21 | 47 | |
Wind waves Height (m) Direction Period (s) | ESE 5 | — | NE 3 | ESE 8 | — | — | — | — | — | — | — | — | ENE 3 | — | — | — | — | — | NNE 3 |
30 | — | 6 | 159 | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | 5 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 27 | 27 | 27 | 627 | 31 | 31 | 23 | 17 | 8 | 23 | 24 | 24 | 23 | 23 | 24 | 26 | 26 | 27 | 27 |
Best forecast wave conditions in Okinawa | |||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.










