
Surf Forecasts:
Ikei Island surf forecast from 14 Sep 2026:
- Most powerful swell: Sunday 20 Sep, 9AM (local time) - 11ft (3.5m), 16s period, E swell with 6,016 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 3.5m 16s and forecast to arrive on Sunday (Sep 20) at 9AM. 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 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 9AM (Sun 20th Sep) | 11ft (3.5m) 16s |
Table - best surf conditions forecast for Ikei Island over the next 16 days.
The Lowdown
Alright, Rusty here, switching to feet and miles per hour. Let’s talk about Ikei Island.
Right out of the gate, the outlook looks thin. The water temp is about normal for the season. The first few days are a write-off with small, short-period east swell and onshore or cross-onshore winds.
Starting Tuesday the 15th, you’ve got a weak 3ft east swell at 9-10 seconds. The wind is 6 mph from the east-northeast, and it’s onshore or cross-onshore. There’s even a risk of thunderstorms. Energy is weak to moderate. Not a good start. Wednesday the 16th through Friday the 18th are the same story: tiny 2ft to 3ft waves, short period, and poor wind. The energy drops right down.
Saturday the 19th brings a big change, but not a good one. A long-period east groundswell hits, pushing waves to 5ft in the morning and 8ft by the afternoon. The period is a solid 15-16 seconds, and the energy skyrockets to over 1200 in the morning and nearly 4000 by the afternoon. The wind, though, is a messy cross-onshore from the north-northeast at 16-19 mph. The ocean is choppy and lumpy. For a reef, that long period could be sweet, but not with that wind.
Sunday the 20th is the biggest day of the outlook. We’re looking at a solid 12ft east swell with a 16-second period. The energy is massive, hitting over 6000. The wind is a cross-shore from the north at 22-25 mph, creating a messy, lumpy cross-chop. At this size, you need to be an expert, and with the conditions, it’s a kite surfer’s playground, not a paddle surfer’s.
Monday the 21st the swell drops a bit to 7ft to 8ft from the east-northeast, with a 14-second period. A near gale to gale-force wind from the NNW and NW is tearing it up. A strong cross-shore in the morning, but by the afternoon we get a clean, cross-off wind. The problem? The wind is 40 mph. The surface is clean, but you won’t be able to paddle into a thing.
Tuesday the 22nd the swell shifts to the north, dropping to 5ft to 7ft. The wind goes offshore from the west, but it’s still a near gale to strong breeze (28-37 mph). The water is clean, but it’s a battle to get out.
Your best shot in this whole 16-day run is likely Wednesday the 23rd. The swell comes down to a more manageable 5ft to 5ft from the north at 10 seconds. The wind is a moderate cross-off from the west-northwest to northwest at 16 mph. The conditions are finally listed as “clean,” with moderate energy. It’s the most user-friendly day we’ve got.
From Thursday the 24th onwards, it’s back to small, weak, and choppy. Swells drop under 3ft, periods shorten, and the wind goes back to being cross-onshore or onshore. The end of the outlook from the 27th sees another big pulse of east-southeast swell, but the wind cranks up to gale force, completely ruining any chance of a wave. By the 30th of September, there’s a severe gale cross-shore with 12ft waves – that’s a hard no.
Bottom line: there’s no standout day to circle on the calendar. The wind just won’t get out of the way of the swell. The 23rd is your best hope, but it’s a long way from perfect.
— Rusty
Short Range ForecastModerate rain (total 19mm), heaviest on Tue night. Warm (max 28°C on Tue morning, min 26°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Thu night. Warm (max 29°C on Fri morning, min 26°C on Thu night). Winds increasing (light winds from the NE on Thu night, strong winds from the N by Sun afternoon). | ||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||
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 9 | E 9 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 16 | E 15 | E 16 | E 16 | E 16 | E 16 | E 15 |
Wave Graph | |||||||||||||||||||
190 | 164 | 223 | 228 | 188 | 149 | 139 | 136 | 108 | 113 | 76 | 74 | 139 | 1134 | 3218 | 3794 | 6016 | 5521 | 4491 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | on | cross-on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross |
High Tide | 8:59AM1.76m | 8:42PM1.85m | 9:37AM1.62m | 9:07PM1.77m | 10:22AM1.47m | 9:34PM1.67m | 11:24AM1.33m | 10:07PM1.56m | 1:30PM1.26m | 11:06PM1.45m | 3:51PM1.34m | 1:24AM1.40m | |||||||
Low Tide | 2:40AM0.30m | 2:43PM0.69m | 3:15AM0.36m | 3:08PM0.83m | 3:52AM0.46m | 3:34PM0.97m | 4:39AM0.58m | 4:02PM1.10m | 5:46AM0.69m | 4:52PM1.21m | 7:35AM0.73m | 8:11PM1.25m | |||||||
— | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | |
6:34 | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | — | 6:28 | — | — | 6:27 | — | |
mm | 2 | 2 | 3 | 3 | — | 2 | 4 | 1 | 2 | 1 | — | 1 | — | — | — | — | — | — | 1 |
Temp °C | 27 | 28 | 28 | 27 | 28 | 28 | 26 | 28 | 28 | 27 | 29 | 29 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 30 | 31 | 32 | 31 | 32 | 31 | 29 | 31 | 31 | 30 | 32 | 32 | 29 | 29 | 28 | 27 | 26 | 26 | 24 |
Swell 1 Height (m) Direction Period (s) | 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 9 | E 15 | E 16 | E 16 | E 16 | E 16 | E 15 |
190 | 164 | 223 | 228 | 188 | 149 | 139 | 136 | 108 | 113 | 76 | 74 | 78 | 1134 | 3218 | 3794 | 6016 | 5521 | 4491 | |
Swell 2 Height (m) Direction Period (s) | ENE 13 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 7 | E 14 | NNW 7 | E 13 | N 7 | N 7 | ENE 12 | E 16 | ENE 11 | S 8 | S 8 | — | — | — |
59 | 16 | 12 | 10 | 19 | 40 | 104 | 25 | 87 | 25 | 24 | 48 | 139 | 49 | 22 | 12 | — | — | — | |
Swell 3 Height (m) Direction Period (s) | NNW 5 | ENE 13 | S 6 | E 16 | ENE 14 | ENE 14 | SE 9 | E 13 | NW 6 | E 13 | ENE 12 | S 8 | S 8 | S 8 | — | — | — | — | — |
3 | 53 | 1 | 20 | 63 | 63 | 3 | 90 | 10 | 86 | 50 | 22 | 22 | 21 | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | N 7 | — | NE 2 | — | — | NNE 3 | NNE 4 | NNE 4 | NE 11 | NNE 7 | N 7 | N 7 | N 8 |
— | — | — | — | — | — | 59 | — | 1 | — | — | 1 | 11 | 21 | 778 | 286 | 316 | 412 | 634 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 23 | 24 | 24 | 24 | 24 | 24 | 23 | 24 | 24 | 23 | 27 | 27 | 24 | 639 | 639 | 635 | 774 | 774 | 635 |
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.










