
Surf Forecasts:
Yonabaru surf forecast from 9 Sep 2026:
- Most powerful swell: Monday 14 Sep, 6PM (local time) - 4.5ft (1.3m), 9s period, E swell with 269 kJ wave energy.
Best Forecast Surf Conditions for Yonabaru this week:
The most powerful waves expected at Yonabaru in the next 16 days are 1.3m 9s and forecast to arrive on Monday (Sep 14) at 6PM. 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 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 6PM (Mon 14th Sep) | 4.5ft (1.3m) 9s |
Table - best surf conditions forecast for Yonabaru over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down the Yonabaru forecast for the next couple weeks.
Look, the first ten days are a bust. From Thursday the 10th all the way through Tuesday the 22nd, there’s no good surf. Wind is mostly blowing onshore or cross-onshore, and even when the swell shows up, the conditions are poor – you’ll see “gentle cross-onshore and fairly choppy” or “moderate cross-onshore and choppy” in the data. Wave energy during this stretch sits between 144 and 271, which is weak to moderate, but with the wrong wind direction and a choppy sea, it’s not worth it. On the 20th and 21st, the swell jumps to 2.4m to 4.5m with a very long period of 16 to 18 seconds, and combined energies like 3004 and 12131 – that’s very strong. But the wind is a fresh to near gale cross-shore, making it lumpy and messy. Only a madman or an expert would even think about it. The 22nd clears up a bit with cross-offshore wind, but the swell is still 2.5m to 3.5m with near gale winds – too big, too windy.
Then, on Wednesday the 23rd, we get one window. Wednesday morning, the swell is 1.5m from the north with a period of 10 seconds, and the wind is cross-offshore from the NNW at 20 km/h, keeping the surface clean. Combined energy is 890 – solid moderate. This is the pick of the whole run. Yonabaru is a beginner-friendly spot that’s fairly consistent, but it can get crowded sometimes. Water temp is about normal for the time of year. For beginners, 1.5m is a bit meaty, so be smart. But with clean wind, this is the only real chance for a decent session. The afternoon turns messy again with onshore wind.
After that, Thursday the 24th and Friday the 25th drop back to tiny, weak swell with onshore wind. Nothing.
So, the only real surf to speak of is on Wednesday the 23rd, morning session at Yonabaru with a clean 1.5m north swell. The rest of the 16 days is either flat, blown out, or too dangerous. Keep your fingers crossed for that Wednesday morning.
Rusty.
Short Range ForecastModerate rain (total 12mm), heaviest on Thu night. Warm (max 29°C on Thu morning, min 26°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 13mm), heaviest on Mon afternoon. Warm (max 29°C on Mon morning, min 26°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | ||||||||||||||
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 8 | N 9 | N 9 | N 9 | NNW 9 | N 8 | SE 6 | SE 6 | E 14 | E 14 | E 6 | E 6 | E 7 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 |
Wave Graph | |||||||||||||||||||
93 | 181 | 235 | 157 | 123 | 84 | 51 | 74 | 64 | 62 | 80 | 97 | 159 | 207 | 238 | 202 | 206 | 177 | 216 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | on | cross-on | cross-on | cross-on | on | on | on | cross-on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 5:36AM2.07m | 6:32PM2.04m | 6:18AM2.16m | 6:58PM2.10m | 6:58AM2.21m | 7:23PM2.14m | 7:35AM2.21m | 7:49PM2.16m | 8:13AM2.16m | 8:15PM2.15m | 8:52AM2.06m | 8:43PM2.13m | |||||||
Low Tide | 11:47PM0.94m | 12:08PM0.38m | 00:21AM0.77m | 12:42PM0.38m | 00:54AM0.63m | 1:14PM0.43m | 1:27AM0.51m | 1:44PM0.51m | 2:00AM0.44m | 2:14PM0.62m | 2:35AM0.41m | 2:43PM0.76m | |||||||
— | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | |
6:40 | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — | — | 6:34 | — | |
mm | — | — | — | 3 | 3 | 4 | 2 | — | — | — | 1 | — | — | — | 5 | 3 | — | 4 | 8 |
Temp °C | 27 | 29 | 28 | 28 | 29 | 29 | 28 | 28 | 29 | 27 | 28 | 28 | 27 | 29 | 28 | 27 | 29 | 29 | 27 |
Feels °C | 30 | 33 | 32 | 32 | 32 | 33 | 31 | 31 | 31 | 29 | 30 | 30 | 29 | 31 | 30 | 31 | 33 | 33 | 31 |
Swell 1 Height (m) Direction Period (s) | NW 6 | N 9 | N 9 | N 9 | NNW 9 | N 8 | N 8 | N 7 | N 7 | S 7 | E 14 | E 14 | E 13 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | NNW 6 |
8 | 181 | 235 | 157 | 123 | 84 | 41 | 28 | 25 | 24 | 61 | 62 | 56 | 207 | 238 | 202 | 206 | 177 | 12 | |
Swell 2 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 9 | SE 9 | ESE 8 | SE 8 | E 15 | E 14 | E 14 | NNW 7 | S 7 | S 6 | S 7 | E 13 | E 13 | E 13 | E 13 | NNW 7 | SSW 8 |
21 | 21 | 21 | 20 | 41 | 60 | 38 | 61 | 64 | 15 | 14 | 7 | 9 | 55 | 31 | 55 | 31 | 29 | 7 | |
Swell 3 Height (m) Direction Period (s) | S 7 | S 7 | S 7 | ESE 6 | S 7 | S 7 | WNW 6 | E 9 | S 7 | E 14 | ESE 9 | N 6 | N 6 | N 5 | S 7 | S 6 | N 4 | E 13 | E 15 |
9 | 8 | 8 | 8 | 9 | 8 | 3 | 7 | 17 | 62 | 17 | 7 | 6 | 5 | 4 | 3 | 1 | 13 | 17 | |
Wind waves Height (m) Direction Period (s) | N 8 | — | — | — | SE 5 | — | SE 6 | SE 6 | SE 6 | E 5 | E 6 | E 6 | E 7 | — | N 5 | N 4 | — | — | ESE 9 |
93 | — | — | — | 10 | — | 51 | 74 | 54 | 33 | 80 | 97 | 159 | — | 2 | 2 | — | — | 216 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 995 | 14 | 14 | 10 | 10 | 10 | 10 | 13 | 13 | 14 | 670 | 14 | 14 | 607 | 47 | 47 | 47 | 17 | 17 |
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.










