
Surf Forecasts:
Ikei Island surf forecast from 4 Sep 2026:
- Best quality surf: Saturday 5 Sep, 9PM (local time) - 3.5ft (1.0m), 9s period, N swell with cross-offshore winds.
- Most powerful swell: Saturday 5 Sep, 9AM (local time) - 6.5ft (2.0m), 11s period, NW swell with 913 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 6PM (local time) - 3ft (0.9m), 6s period with NW 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 Friday (Sep 04) at 6PM. The primary swell is predicted to be 0.9m and 6s period with a secondary swell of 0.6m and 8s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Ikei Island in the next 16 days are 2.0m 11s and forecast to arrive on Saturday (Sep 05) at 9AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 7s period and expected on Saturday (Sep 05) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Fri 4th Sep) | 3ft (0.9m) 6s |
| Best Surf | 9PM (Sat 5th Sep) | 3.5ft (1.0m) 9s |
| Most Powerful | 9AM (Sat 5th Sep) | 6.5ft (2.0m) 11s |
Table - best surf conditions forecast for Ikei Island over the next 16 days.
The Lowdown
G’day, Rusty here. Look, I’ll be straight with you – the next sixteen days are a tough beat for Ikei Island. We’ve got one small window of potential, but it’s a long wait, and even then, it’s nothing to write home about. The swell energy is mostly weak, with the combined energy only hitting moderate levels on a couple of days, and the wind is often a mess. Let’s break it down.
The first real hope comes on Saturday the 5th of September. The morning shows a pulse of 7ft swell from the NW with a period of 11 seconds, and the combined energy is a solid 949 (moderate to strong). That’s a decent push of groundswell. But the wind is howling offshore from the W at 19 mph, which is fresh and will keep the surface clean. This is the standout for the whole period. Ikei Island is a reef break, so longer-period swell like this can work well here, giving you some real shape. The water temp is 83°, which is about average for this time of year, so you’ll be in boardies. The wind is offshore, but it’s strong, so it’ll be a battle getting out. The swell is 7ft, which is getting into the expert zone; beginners should stay well clear. The afternoon fades quickly with the swell dropping to 5ft and the wind turning cross-offshore from the WNW at 25 mph, which is messy and strong, making it a no-go.
Sunday the 6th is a write-off. The swell drops to 3ft, the wind swings onshore from the NE at 22 mph, and the combined energy is a weak 179. It’s lumpy, choppy, and small. Monday and Tuesday are also poor – small swell (2ft to 4ft), with cross-shore winds from the N and NW, keeping the energy low (96 to 299). The rest of the first week and into the second week is a total washout. From Wednesday the 9th right through to Saturday the 19th of September, the swell is tiny, often under 3ft, with periods under 10 seconds, and the wind is mostly cross-onshore or onshore from the E and SE. The combined energy drops to a measly 16 to 71 on many days. There’s a brief moment on Thursday the 17th when the morning turns glassy with a light SE breeze, but the swell is a pathetic 2ft from the E with a long period of 13 seconds. That’s a clean, glassy surface, but with such small waves, it’s barely surfable. The afternoon is similar. It’s the only other time the wind is calm, but the lack of swell kills it.
After that, it’s back to onshore wind and tiny swell through the 18th and 19th. The combined energy never climbs above 130. We’ve got a big gap of no real surf from the 6th all the way to the 17th, which is an 11-day stretch of poor to marginal conditions. The reef is exposed, but it’s just not getting any love. With the wind and swell being so small and messy, this setup honestly looks more interesting for kite surfing than paddle surfing on most days.
Signing off, Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Fri morning. Warm (max 29°C on Fri morning, min 27°C on Fri night). Mainly strong winds. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Mon afternoon. Warm (max 29°C on Mon morning, min 26°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||||
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) | E 9 | E 9 | NW 7 | NW 11 | NNW 11 | N 11 | N 10 | N 9 | E 9 | E 8 | ENE 10 | N 10 | N 9 | NNW 9 | N 8 | N 7 | NNW 7 | NNW 7 | NW 6 | SE 9 | ESE 9 |
Wave Graph | |||||||||||||||||||||
110 | 73 | 89 | 913 | 495 | 238 | 127 | 157 | 81 | 51 | 67 | 143 | 264 | 232 | 82 | 54 | 51 | 35 | 8 | 23 | 48 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | cross-off | on | cross-on | cross-on | cross | cross | cross-off | cross | cross | cross | cross | cross | cross-on | cross-on | on | cross-on | cross-on |
High Tide | 12:00PM1.40m | 11:04PM1.67m | 2:09PM1.36m | 00:32AM1.59m | 3:56PM1.47m | 2:26AM1.61m | 4:51PM1.60m | 3:50AM1.72m | 5:29PM1.72m | 4:50AM1.85m | 6:02PM1.82m | 5:40AM1.96m | 6:32PM1.90m | ||||||||
Low Tide | 4:54PM1.06m | 6:40AM0.52m | 6:31PM1.19m | 8:25AM0.49m | 8:51PM1.18m | 9:48AM0.38m | 10:13PM1.04m | 10:46AM0.26m | 11:04PM0.86m | 11:31AM0.18m | 11:45PM0.68m | 12:10PM0.16m | 00:23AM0.52m | ||||||||
6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | |
— | 6:45 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | |
mm | 2 | — | 1 | 1 | 2 | 4 | 1 | — | — | — | 1 | 2 | 2 | — | — | — | — | — | 4 | 3 | 11 |
Temp °C | 29 | 29 | 28 | 27 | 27 | 28 | 29 | 29 | 27 | 29 | 29 | 27 | 28 | 29 | 26 | 28 | 28 | 26 | 28 | 28 | 27 |
Feels °C | 31 | 31 | 31 | 27 | 26 | 33 | 30 | 30 | 30 | 32 | 31 | 30 | 30 | 30 | 28 | 30 | 29 | 29 | 30 | 29 | 27 |
Swell 1 Height (m) Direction Period (s) | E 9 | SSW 9 | NW 7 | SSW 9 | NNW 11 | WNW 7 | N 10 | E 6 | E 9 | NW 7 | WNW 7 | NW 7 | WNW 7 | SSE 9 | N 8 | N 7 | NNW 7 | NNW 7 | NW 6 | SSE 6 | SSE 8 |
110 | 103 | 89 | 189 | 495 | 147 | 127 | 40 | 81 | 35 | 38 | 44 | 35 | 25 | 82 | 54 | 51 | 35 | 8 | 8 | 19 | |
Swell 2 Height (m) Direction Period (s) | N 7 | E 9 | E 9 | ESE 7 | SSW 8 | N 11 | WNW 7 | S 8 | NW 6 | N 7 | ENE 10 | NE 11 | SSE 8 | NE 9 | S 8 | S 8 | S 7 | SSE 7 | SSE 7 | NW 5 | N 6 |
25 | 73 | 57 | 17 | 125 | 238 | 47 | 66 | 20 | 40 | 67 | 60 | 24 | 22 | 30 | 29 | 27 | 16 | 15 | 7 | 6 | |
Swell 3 Height (m) Direction Period (s) | — | NNW 7 | SW 10 | ENE 10 | NW 9 | SSW 8 | SSW 8 | WNW 7 | S 9 | E 8 | N 7 | SSW 8 | NE 10 | SW 8 | NE 9 | WNW 5 | NE 9 | ESE 10 | N 6 | SE 9 | NNW 5 |
— | 15 | 33 | 19 | 21 | 47 | 46 | 19 | 39 | 51 | 27 | 28 | 35 | 16 | 21 | 5 | 12 | 9 | 7 | 23 | 3 | |
Wind waves Height (m) Direction Period (s) | SSW 6 | SW 6 | SSW 8 | NW 11 | WNW 7 | E 6 | ENE 4 | N 9 | N 5 | N 7 | NNW 3 | N 10 | N 9 | NNW 9 | WNW 6 | — | — | — | ENE 3 | E 3 | ESE 9 |
261 | 152 | 262 | 913 | 278 | 7 | 52 | 157 | 41 | 26 | 2 | 143 | 264 | 232 | 13 | — | — | — | 1 | 1 | 48 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 964 | 635 | 0 | 852 | 825 | 24 | 758 | 761 | 758 | 639 | 30 | 44 | 639 | 639 | 635 | 639 | 639 | 44 | 805 | 761 | 805 |
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.










