Surf Forecasts:
Yonabaru surf forecast from 13 Aug 2026:
- Most powerful swell: Thursday 20 Aug, 9PM (local time) - 7ft (2.2m), 8s period, SE swell with 634 kJ wave energy.
Best Forecast Surf Conditions for Yonabaru this week:
The most powerful waves expected at Yonabaru in the next 16 days are 2.2m 8s and forecast to arrive on Thursday (Aug 20) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 8s period and expected on Sunday (Aug 16) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 9PM (Thu 20th Aug) | 7ft (2.2m) 8s |
Table - best surf conditions forecast for Yonabaru over the next 16 days.
The Lowdown
G'day, it’s Rusty. Let's have a look at what's on offer for Okinawa.
Alright, the honest truth is that the next two weeks are looking tough for decent wave riding around here. We’ve got a massive 16-day window but the first real recommendation doesn't kick in until Thursday the 28th of August, so there's a two-week gap of nothing but poor surf to start. That’s a long dry spell.
For the small glimpse of hope we do have, Yonabaru is the only spot in the mix, and it's rated as a beginner’s wave, fairly exposed. The water temp is sitting at a comfortable 83.7°F, which is about normal for this time of year.
Now for that Thursday the 28th: We’ve got a morning session with a 5.6ft swell rolling in from the east, with a short period of 7 seconds. The energy is moderate at 270. The wind will be a light cross-shore breeze, so conditions will be a bit bumpy with small crossing ripples. That's what we're looking at, and it's only rated as marginal. The afternoon is similar—5.6ft from the east-southeast, period still short at 7 seconds, and energy up slightly to 316. The wind turns light cross-onshore, which won't help the quality. It's not a standout, it's just the only option after a long period of nothing.
Before that, on the 28th of August, we have the only shot at anything rideable, but it’s still poor. The swell is 5.6ft from the east, period a short 7 seconds, and wind is light cross-shore, so expect some bump. The afternoon sees a bit more energy at 316, but with light cross-onshore wind, it's not going to be clean. That’s the best we’ve got, and it’s marginal at best.
So, if you're itching for a paddle, it's a waiting game. The 28th of August is the only date with a pulse, but don't expect much. This is a rough run for the area.
Short Range ForecastLight rain (total 2mm), mostly falling on Thu night. Warm (max 30°C on Sat morning, min 26°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 6mm), mostly falling on Tue night. Warm (max 29°C on Sun afternoon, min 27°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Thu 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | ||||||||||||||
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 10 | ENE 10 | E 10 | E 10 | E 9 | E 11 | E 11 | E 10 | E 10 | E 10 | ESE 5 | ESE 5 | E 10 | E 10 | E 10 | E 10 | E 6 | E 10 | E 10 | E 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 50 | 33 | 31 | 17 | 15 | 61 | 59 | 52 | 51 | 51 | 69 | 66 | 71 | 51 | 47 | 220 | 62 | 50 | 52 | 58 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | glassy | cross-off | glassy | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 7:37PM2.08m | 7:08AM2.22m | 8:05PM2.11m | 7:48AM2.22m | 8:32PM2.12m | 8:27AM2.17m | 8:59PM2.11m | 9:07AM2.08m | 9:27PM2.09m | 9:50AM1.95m | 9:57PM2.05m | 10:40AM1.79m | 10:31PM1.99m | |||||||
Low Tide | 1:17AM0.87m | 1:41PM0.28m | 1:51AM0.76m | 2:13PM0.35m | 2:26AM0.69m | 2:45PM0.47m | 3:02AM0.64m | 3:16PM0.62m | 3:42AM0.63m | 3:47PM0.79m | 4:26AM0.65m | 4:20PM0.97m | ||||||||
 |  |  |  |  | | |  | | | | | | | | |  |  | | | |
 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — |
 | 7:07 | — | — | 7:06 | — | — | 7:05 | — | — | 7:05 | — | — | 7:04 | — | — | 7:02 | — | — | 7:01 | — |
mm | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 | 1 | — | 4 |
Temp °C | 29 | 27 | 29 | 29 | 27 | 30 | 29 | 27 | 29 | 29 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 29 | 29 | 28 |
Feels °C | 33 | 32 | 33 | 32 | 32 | 34 | 33 | 31 | 32 | 32 | 29 | 30 | 29 | 29 | 31 | 29 | 30 | 32 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | SW 8 | SW 8 | SSW 8 | S 8 | SW 8 | SW 8 | SW 8 | SSW 8 | SW 8 | SSW 8 | SSW 9 | SSW 9 | SW 8 | SW 9 | SSW 9 | SSW 8 | E 10 | E 6 | E 7 | SSW 9 |
| kJ | 80 | 67 | 88 | 66 | 62 | 69 | 60 | 88 | 102 | 78 | 141 | 96 | 74 | 79 | 111 | 80 | 50 | 26 | 52 | 26 |
Swell 2 Height (m) Direction Period (s) | S 8 | S 9 | S 9 | SW 8 | S 8 | S 9 | S 8 | S 8 | S 8 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | SSE 10 | SW 9 | E 10 | E 10 | ESE 9 |
| kJ | 66 | 71 | 79 | 65 | 46 | 76 | 48 | 42 | 42 | 51 | 50 | 51 | 71 | 49 | 47 | 10 | 39 | 50 | 48 | 32 |
Swell 3 Height (m) Direction Period (s) | E 10 | ENE 10 | E 10 | E 10 | E 9 | E 11 | E 11 | E 10 | E 10 | S 8 | W 6 | S 7 | S 7 | S 7 | SE 10 | — | S 7 | SW 9 | SSE 7 | SSE 7 |
| kJ | 50 | 33 | 31 | 17 | 15 | 61 | 59 | 52 | 51 | 32 | 1 | 9 | 15 | 17 | 16 | — | 16 | 27 | 15 | 10 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | E 5 | E 5 | E 5 | ESE 5 | ESE 5 | ESE 5 | ESE 5 | ESE 5 | E 10 | E 6 | — | — | E 8 |
| kJ | — | — | — | — | — | — | — | 7 | 12 | 12 | 69 | 66 | 51 | 51 | 37 | 220 | 62 | — | — | 58 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 10 | 13 | 13 | 13 | 13 | 10 | 10 | 10 | 10 | 10 | 10 | 13 | 13 | 13 | 14 | 13 | 10 | 10 | 51 |
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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