Surf Forecasts:
Yonabaru surf forecast from 6 Sep 2026:
- Most powerful swell: Saturday 12 Sep, 3PM (local time) - 6ft (1.9m), 10s period, SE swell with 716 kJ wave energy.
Best Forecast Surf Conditions for Yonabaru this week:
The most powerful waves expected at Yonabaru in the next 16 days are 1.9m 10s and forecast to arrive on Saturday (Sep 12) at 3PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 10s period and expected on Saturday (Sep 12) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 3PM (Sat 12th Sep) | 6ft (1.9m) 10s |
Table - best surf conditions forecast for Yonabaru over the next 16 days.
The Lowdown
Alright gang, Rusty here with the Yonabaru forecast. Got to be straight with you—this 16-day stretch is a bust. The finder file has no good recommendations at all. That’s a long gap, but for these parts, a quiet spell like this can happen. Let me walk you through it.
Monday the 7th kicks off with a 2.0m north swell, but a 25 km/h cross-off wind keeps things from coming together. Energy is moderate at 648, but it’s labeled “poor surf conditions.” Tuesday and Wednesday are similar—clean-looking but choppy and not worth your time.
Thursday the 10th drops way off with only 0.8m and weak energy (87); winds go cross-on and it’s poor. Friday the 11th through the weekend sees the swell bounce up to 1.9m by Saturday the 12th, with combined energy hitting 799 that afternoon. That’s got some muscle, but it’s blowing onshore steady at 25 km/h—honestly, for a beach setup like this, that’s more of a kite-surfing scenario than a paddle affair.
From Monday the 14th onward, it’s a slow bleed. Swells stay under 1.3m and drop to as low as 0.4m by the 21st, with energy readings falling to 17. Winds are mostly onshore or cross-onshore, sometimes fresh and lumpy. No clean windows.
So, no hidden gems here. The whole period is a blank. Water temp is just average for the season. Keep the wax off and wait for a change.
-Rusty
Short Range ForecastLight rain (total 7mm), mostly falling on Sun night. Warm (max 29°C on Mon afternoon, min 26°C on Tue night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Thu afternoon. Warm (max 29°C on Thu morning, min 26°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | ||||||||||||||
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) | NNW 8 | N 9 | N 8 | NNW 8 | NNW 8 | NNW 9 | N 8 | N 8 | N 8 | N 7 | N 7 | N 8 | N 8 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | SE 10 | SE 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 754 | 609 | 302 | 326 | 284 | 371 | 233 | 222 | 159 | 85 | 66 | 140 | 116 | 209 | 230 | 240 | 242 | 716 | 587 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross-on | on | on | on | on | on | on | on | on |
High Tide | 2:19AM1.75m | 5:04PM1.76m | 3:47AM1.83m | 5:37PM1.87m | 4:48AM1.96m | 6:06PM1.97m | 5:36AM2.07m | 6:32PM2.04m | 6:18AM2.16m | 6:58PM2.10m | 6:58AM2.21m | 7:23PM2.14m | |||||||
Low Tide | 9:52AM0.61m | 10:21PM1.28m | 10:47AM0.51m | 11:09PM1.12m | 11:31AM0.43m | 11:47PM0.94m | 12:08PM0.38m | 00:21AM0.77m | 12:42PM0.38m | 00:54AM0.63m | 1:14PM0.43m | 1:27AM0.51m | |||||||
 |  |  |  | | |  |  | |  | | | | | | | | | | |
 | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — |
 | 6:44 | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — |
mm | 3 | 2 | — | — | — | — | 1 | 1 | — | — | — | 3 | 1 | — | — | — | — | — | — |
Temp °C | 28 | 28 | 29 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 29 | 29 | 28 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 28 | 29 | 31 | 28 | 29 | 29 | 29 | 28 | 28 | 29 | 32 | 32 | 32 | 31 | 30 | 29 | 30 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | E 9 | S 9 | E 8 | ENE 9 | NE 9 | ENE 9 | S 8 | S 8 | S 7 | S 7 | N 7 | N 8 | N 8 | N 9 | N 8 | N 8 | SSE 11 | NNW 8 | E 14 |
| kJ | 78 | 38 | 22 | 44 | 20 | 26 | 10 | 10 | 9 | 9 | 66 | 140 | 116 | 94 | 68 | 29 | 161 | 19 | 62 |
Swell 2 Height (m) Direction Period (s) | S 9 | E 8 | S 9 | SSE 9 | SW 8 | S 8 | E 9 | ENE 9 | ENE 9 | SE 10 | E 9 | ESE 9 | SE 9 | E 15 | E 15 | E 15 | N 8 | E 14 | N 7 |
| kJ | 15 | 36 | 14 | 16 | 15 | 12 | 14 | 15 | 16 | 15 | 13 | 32 | 21 | 39 | 39 | 38 | 31 | 64 | 15 |
Swell 3 Height (m) Direction Period (s) | SW 8 | E 13 | SW 8 | SW 8 | E 9 | SW 8 | ENE 8 | SE 10 | SE 10 | E 8 | S 7 | S 7 | S 7 | S 7 | S 7 | WNW 6 | E 14 | SW 8 | N 7 |
| kJ | 11 | 3 | 17 | 9 | 13 | 9 | 6 | 16 | 16 | 6 | 8 | 8 | 8 | 4 | 4 | 4 | 61 | 3 | 9 |
Wind waves Height (m) Direction Period (s) | NNW 8 | N 9 | N 8 | NNW 8 | NNW 8 | NNW 9 | N 8 | N 8 | N 8 | N 7 | NE 7 | ENE 7 | ESE 6 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | SE 10 | SE 10 |
| kJ | 754 | 609 | 302 | 326 | 284 | 371 | 233 | 222 | 159 | 85 | 8 | 4 | 14 | 209 | 230 | 240 | 242 | 716 | 587 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 727 | 670 | 670 | 607 | 670 | 768 | 607 | 670 | 777 | 607 | 14 | 14 | 18 | 18 | 26 | 14 | 14 | 14 | 14 |
Best forecast wave conditions in Okinawa | |||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the Yonabaru Surf forecast
The above surf forecast table for Yonabaru provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Yonabaru can be found by selecting the local surf guide option on the grey menu. Our Yonabaru 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 (Yonabaru) 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 Yonabaru 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.
Yonabaru is 5 km (3 miles) from the city of Ginowan. If you plan a holiday in Okinawa, look for hotels and other accommodation in Ginowan. Ginowan has rooms for a wide range of budgets as well as car hire and transport links.
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