Surf Forecasts:
Ikei Island surf forecast from 1 Sep 2026:
- Best quality surf: Thursday 3 Sep, 6PM (local time) - 4.5ft (1.4m), 10s period, E swell with cross-offshore winds.
- Most powerful swell: Tuesday 1 Sep, 9PM (local time) - 10ft (3.0m), 10s period, ESE swell with 1,451 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 6PM (local time) - 4.5ft (1.4m), 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 Thursday (Sep 03) at 6PM. The primary swell is predicted to be 1.4m and 10s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Ikei Island in the next 16 days are 3.0m 10s and forecast to arrive on Tuesday (Sep 01) at 9PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 9s period and expected on Friday (Sep 04) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Thu 3rd Sep) | 4.5ft (1.4m) 10s |
| Best Surf | 6PM (Thu 3rd Sep) | 4.5ft (1.4m) 10s |
| Most Powerful | 9PM (Tue 1st Sep) | 10ft (3.0m) 10s |
Table - best surf conditions forecast for Ikei Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s coming up for Ikei Island.
We’ve got a bit of a rough start. The first few days of September are a write-off for paddle surfing – strong onshore winds and messy conditions spoil what’s otherwise a solid pulse of swell. We’re looking at moderate wave energy (972) on the morning of the 1st with 8ft swell, but it’s coming from the ESE with a short 9-second period, and that 22 mph wind from the ENE is just ruining it. That pattern sticks around through the 2nd.
Things get a little more interesting late on Thursday the 3rd. The wind swings offshore from the WNW, cleaning things up. Swell drops a touch to 7ft from the east, but the period stretches to 11 seconds, giving it proper groundswell grunt. The energy is still strong (1086), but the conditions are described as "marginal". It’s a lookable window, but not a standout.
The real standout in this 16-day window is the morning of Saturday the 5th. It’s proper glassy, with the wind going dead calm. The swell is tiny at 3ft from the north, but the period is a clean 9 seconds. The energy is weak (151), but for a small clean morning, that’s a winner. For a reef break like Ikei Island, that glassy, clean surface is gold. The water temp is about 84°, which is pretty normal for this time of year.
After that, we go into a long run of poor to messy conditions. Strong cross-onshore winds and lumpy seas dominate from the 6th through the 13th of September. There’s a pulse of east swell on the 9th with 4ft and 11-second period, but the wind is howling onshore at 19 mph, so it’s a no-go. The energy is there (411), but it’s just a waste.
Then, on the 15th of September, we get a proper look at something big coming. The Tuesday afternoon shows a 7ft swell from the east with a *very long* 15-second period. The energy is strong (1936). The wind is a messy cross-shore though, so the quality is only marginal. But it’s a sign of what’s building.
The real big one is on the 16th of September. Wednesday morning has 16ft from the ENE, and by the afternoon it’s a massive 26ft from the NNE. The energy is off the charts (23586). The wind is light and cross-onshore, but the forecast explicitly says it’s too big for this break. This is for experts only, and even then, it’s going to be a washing machine. A spot like this will be dangerous and unruly.
So, to wrap it up: the best clean surf on offer is the glassy, small morning on the 5th. If you're a competent surfer, the morning of the 3rd offers a proper, clean groundswell, but it’s marginal. Everything else is either blown out or too big for safety. Stay patient.
Rusty.
Short Range ForecastHeavy rain (total 21mm), heaviest during Thu afternoon. Warm (max 29°C on Wed afternoon, min 26°C on Wed night). Winds decreasing (fresh winds from the E on Tue night, light winds from the W by Thu night). | Days 4-6 Weather SummaryHeavy rain (total 36mm), heaviest during Sun morning. Warm (max 28°C on Fri morning, min 26°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | |||||||||||||||
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 9 | ESE 9 | ESE 9 | E 9 | E 8 | E 10 | E 11 | E 10 | E 10 | E 10 | N 7 | E 8 | N 9 | N 10 | N 9 | N 9 | N 9 | N 8 | E 9 | E 8 | N 9 |
Wave Graph | |||||||||||||||||||||
972 | 1182 | 1234 | 710 | 630 | 1408 | 1086 | 520 | 186 | 113 | 51 | 36 | 133 | 194 | 136 | 78 | 54 | 33 | 36 | 34 | 25 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | on | cross-on | cross-off | cross-off | off | off | off | cross-off | glassy | on | on | cross-on | cross-on | cross-on | cross-on | on | cross-on |
High Tide | 9:00PM1.90m | 9:43AM1.69m | 9:32PM1.85m | 10:39AM1.54m | 10:10PM1.77m | 12:00PM1.40m | 11:04PM1.67m | 2:09PM1.36m | 00:32AM1.59m | 3:56PM1.47m | 2:26AM1.61m | 4:51PM1.60m | |||||||||
Low Tide | 2:53PM0.55m | 3:26AM0.35m | 3:26PM0.71m | 4:13AM0.40m | 4:04PM0.89m | 5:14AM0.47m | 4:54PM1.06m | 6:40AM0.52m | 6:31PM1.19m | 8:25AM0.49m | 8:51PM1.18m | 9:48AM0.38m | 10:13PM1.04m | ||||||||
6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | |
— | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — | |
mm | 2 | 4 | 5 | — | — | 1 | 2 | 7 | — | 3 | 2 | 3 | 2 | 5 | 10 | 9 | 2 | — | 1 | — | — |
Temp °C | 28 | 28 | 27 | 28 | 29 | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 27 | 27 | 29 | 29 | 27 |
Feels °C | 28 | 28 | 26 | 28 | 30 | 27 | 30 | 30 | 31 | 33 | 32 | 32 | 33 | 31 | 28 | 29 | 28 | 30 | 33 | 32 | 31 |
Swell 1 Height (m) Direction Period (s) | SSW 8 | S 8 | SW 10 | SSW 10 | SSW 10 | E 10 | E 11 | E 10 | SSW 12 | SSW 11 | SSW 9 | SSW 9 | SSW 9 | SSW 8 | SSW 8 | S 8 | S 8 | SSW 8 | S 9 | S 8 | S 8 |
13 | 20 | 47 | 85 | 127 | 1408 | 1086 | 520 | 414 | 322 | 260 | 294 | 193 | 221 | 160 | 104 | 103 | 217 | 299 | 205 | 140 | |
Swell 2 Height (m) Direction Period (s) | SW 10 | SW 9 | S 8 | E 13 | ENE 12 | SSW 10 | SSW 9 | SW 12 | E 10 | N 8 | N 7 | E 8 | N 9 | N 10 | N 9 | N 9 | SW 9 | N 8 | E 9 | E 8 | E 8 |
15 | 21 | 10 | 28 | 29 | 120 | 151 | 195 | 186 | 71 | 51 | 36 | 133 | 194 | 136 | 78 | 62 | 33 | 36 | 34 | 22 | |
Swell 3 Height (m) Direction Period (s) | S 9 | E 15 | E 14 | E 16 | — | S 8 | S 8 | N 6 | N 7 | E 10 | E 8 | N 7 | ESE 7 | E 10 | E 9 | SW 9 | N 9 | E 9 | N 7 | NNW 7 | N 9 |
14 | 5 | 15 | 5 | — | 12 | 5 | 29 | 51 | 113 | 34 | 25 | 18 | 30 | 27 | 62 | 54 | 26 | 17 | 17 | 25 | |
Wind waves Height (m) Direction Period (s) | ESE 9 | ESE 9 | ESE 9 | E 9 | E 8 | — | — | W 3 | SSW 9 | — | — | — | — | SW 8 | — | — | — | E 3 | — | ENE 3 | NE 4 |
972 | 1182 | 1234 | 710 | 630 | — | — | 4 | 165 | — | — | — | — | 138 | — | — | — | 5 | — | 4 | 10 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 758 | 635 | 635 | 627 | 26 | 44 | 8 | 8 | 0 | 0 | 0 | 0 | 0 | 23 | 26 | 27 | 761 | 26 | 26 | 26 | 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.











