Surf Forecasts:
Ikei Island surf forecast from 10 Sep 2026:
- Most powerful swell: Wednesday 16 Sep, 12AM (local time) - 4.5ft (1.3m), 10s period, ESE swell with 315 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 1.3m 10s and forecast to arrive on Wednesday (Sep 16) at 12AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 5s period and expected on Wednesday (Sep 16) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 12AM (Wed 16th Sep) | 4.5ft (1.3m) 10s |
Table - best surf conditions forecast for Ikei Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s talk about what’s shaping up for Ikei Island. Gotta be straight with you – this isn’t a classic run. There’s a solid window of flat, messy conditions to start, and we have to wait a fair while for anything worth paddling out for.
The standout, and really the only window I’d recommend getting excited about, is a brief flash of good conditions right at the start. For Thursday afternoon, the 10th of September, we’ve got clean, glassy conditions with the wind barely a whisper from the NNE at just 3 mph. The swell is a clean 4ft from the north, with a period of 9 seconds. The water is a balmy 84°, which is totally normal for this time of year. The combined swell energy is moderate at (282), and it’s all coming together for some fun, clean waves on the reef. That’s your best bet, no question.
After that, things go south. From Friday the 11th right through to Thursday the 24th of September, it’s a write-off. We’re looking at a long stretch of cross-onshore and onshore winds, combined with small, weak, and choppy surf. There’s some swell in there, but the wind and conditions just ruin it. You don’t want any part of that.
Then, we get a bit of a tease later on. On Saturday the 19th of September, the swell jumps up, hitting 7ft to 8ft from the east with a long period of 17-18 seconds. The combined energy is massive – (4360) – but the wind is a messy cross-onshore. The wave comment reads as poor. It’s going to be a lumpy, blown-out mess with a ton of power. That’s more for the experienced crew or the kite surfers, honestly. It gets even bigger on Sunday the 20th with 10ft from the east (16 seconds) but with a fresh cross-onshore breeze, making it a real beast and a no-go for most. By Monday the 21st, the wind swings and cleans things up a bit, but the swell drops and the winds are too strong. Late in the run, around the 25th of September, we see another pulse of 7ft, but again, the onshore wind kills it.
So, to sum it up: get on Ikei Island this Thursday afternoon, the 10th, for the best glassy, clean waves of the whole 16-day run. After that, it’s a long wait with nothing much to offer. I’d keep an eye on the charts, but for now, that’s the picture.
Rusty.
Short Range ForecastModerate rain (total 12mm), heaviest on Fri afternoon. Warm (max 29°C on Thu afternoon, min 27°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 42mm), heaviest during Tue morning. Warm (max 28°C on Sun afternoon, min 27°C on Sun afternoon). Wind will be generally light. | |||||||||||||||||||
Thu 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | ||||||||||||||
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) | N 9 | N 9 | NNW 8 | NNW 8 | E 14 | E 14 | E 14 | E 14 | E 14 | E 6 | E 8 | E 8 | E 9 | E 9 | ESE 9 | ESE 9 | ESE 10 | E 10 | E 10 | E 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 256 | 162 | 92 | 65 | 63 | 61 | 64 | 62 | 97 | 116 | 163 | 186 | 252 | 230 | 294 | 254 | 315 | 146 | 116 | 109 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on | on | cross-on | cross | cross | cross-on | cross-on | cross-on | on |
High Tide | 6:32PM1.90m | 6:24AM2.02m | 7:00PM1.95m | 7:05AM2.03m | 7:27PM1.96m | 7:43AM1.98m | 7:53PM1.95m | 8:21AM1.89m | 8:18PM1.91m | 8:59AM1.76m | 8:42PM1.85m | 9:37AM1.62m | 9:07PM1.77m | |||||||
Low Tide | 00:23AM0.52m | 12:45PM0.19m | 00:58AM0.40m | 1:18PM0.27m | 1:33AM0.31m | 1:48PM0.39m | 2:06AM0.28m | 2:16PM0.54m | 2:40AM0.30m | 2:43PM0.69m | 3:15AM0.36m | 3:08PM0.83m | ||||||||
 |  |  | |  |  | | | | | | | | | | | | | |  | |
 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — |
 | 6:38 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — |
mm | — | — | 3 | 6 | 2 | — | 1 | — | — | 2 | — | 1 | 9 | 12 | 9 | 5 | 3 | 1 | — | 2 |
Temp °C | 29 | 28 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 34 | 32 | 32 | 31 | 30 | 30 | 30 | 30 | 29 | 29 | 29 | 27 | 29 | 29 | 31 | 31 | 30 | 32 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | N 9 | N 9 | NNW 8 | ESE 7 | N 8 | N 7 | NNW 7 | E 14 | E 14 | E 14 | E 13 | E 8 | E 9 | E 9 | ESE 9 | ESE 9 | E 10 | E 10 | E 10 | E 9 |
| kJ | 256 | 162 | 92 | 44 | 21 | 25 | 15 | 62 | 97 | 101 | 92 | 186 | 252 | 230 | 294 | 254 | 226 | 146 | 116 | 109 |
Swell 2 Height (m) Direction Period (s) | ESE 9 | SE 9 | ESE 8 | NNW 8 | E 14 | E 14 | E 14 | S 7 | ESE 9 | S 6 | N 5 | ENE 13 | E 13 | ENE 13 | ENE 13 | ENE 15 | NNW 7 | SSE 5 | SSE 5 | E 14 |
| kJ | 26 | 20 | 55 | 65 | 63 | 61 | 64 | 15 | 16 | 3 | 5 | 58 | 55 | 59 | 55 | 44 | 5 | 17 | 11 | 104 |
Swell 3 Height (m) Direction Period (s) | S 7 | ESE 6 | S 7 | S 7 | NNW 7 | S 7 | S 6 | NNW 6 | S 6 | — | S 7 | S 6 | S 6 | N 5 | SW 9 | SW 8 | SW 9 | ENE 14 | ENE 14 | SE 5 |
| kJ | 9 | 8 | 9 | 8 | 10 | 8 | 7 | 13 | 7 | — | 4 | 3 | 3 | 4 | 12 | 11 | 13 | 63 | 62 | 7 |
Wind waves Height (m) Direction Period (s) | — | — | SE 4 | — | SE 6 | SE 6 | SE 6 | ESE 5 | E 6 | E 6 | E 8 | N 5 | — | — | S 6 | — | ESE 10 | — | — | — |
| kJ | — | — | 3 | — | 62 | 60 | 39 | 47 | 69 | 116 | 163 | 2 | — | — | 1 | — | 315 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 23 | 23 | 23 | 23 | 28 | 28 | 27 | 27 | 27 | 639 | 24 | 635 | 44 | 44 | 44 | 23 | 23 | 23 | 23 |
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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