
Surf Forecasts:
Yonabaru surf forecast from 8 Aug 2026:
- Most powerful swell: Monday 10 Aug, 3PM (local time) - 3.5ft (1.1m), 13s period, E swell with 413 kJ wave energy.
Best Forecast Surf Conditions for Yonabaru this week:
The most powerful waves expected at Yonabaru in the next 16 days are 1.1m 13s and forecast to arrive on Monday (Aug 10) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 10s period and expected on Sunday (Aug 09) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 3PM (Mon 10th Aug) | 3.5ft (1.1m) 13s |
Table - best surf conditions forecast for Yonabaru over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's on the table for our stretch of coast.
Honestly, for the next week and a half, it’s looking pretty grim. We’re staring down a long, flat spell with nothing worth paddling out for. The wind is a mess, mostly cross-onshore or worse, and the swell is tiny with weak energy. There's a real dry spell from now until around the 19th of August, with barely a ripple to get excited about.
The one bright spot on the horizon, and it’s a distant one, is the end of the third week. Things start to rumble back to life around Thursday the 21st of August. The swell builds quickly, and by the Friday morning the 22nd, we’re looking at a solid 7ft of swell from the E. The energy is ramping up big time, with a combined energy reading of 663 (moderate). By Friday afternoon, it’s pumping with 10ft from the ESE and a period of 11 seconds, packing a whopping 1789 in energy (strong). That is serious power.
But here’s the catch, and it’s a big one. This is all aimed at Yonabaru, a fairly exposed beginner spot. When you get waves over 8ft, that’s expert territory, and this swell peaks right in that zone. The wind is howling onshore or cross-onshore at 18-25 mph, turning it into a washing machine. For a beach break, with that much wind and power, it’s going to be a messy, choppy mess. Honestly, that setup looks way more interesting for kite surfing than paddle surfing. The water temp is sitting at a warm 86°, which is a touch warmer than normal for the time of year, but you won’t be feeling it in that wind.
So, the takeaway? We’ve got a whole lot of nothing, then a big, wind-affected pulse of swell that’s going to be too wild for most. The best on offer is technically that Friday the 22nd and Saturday the 23rd, but it’s an expert-only, windy, and messy proposition. Keep your expectations low, and maybe give this one a miss unless you're a glutton for punishment and have a kite.
Rusty.
Short Range ForecastModerate rain (total 18mm), heaviest on Sun night. Warm (max 30°C on Mon morning, min 27°C on Sun night). Winds decreasing (fresh winds from the S on Sun morning, light winds from the SSE by Tue night). | Days 4-6 Weather SummaryHeavy rain (total 54mm), heaviest during Thu night. Warm (max 30°C on Wed morning, min 26°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | |||||||||||||||
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 10 | E 9 | E 14 | E 14 | E 13 | E 12 | E 12 | E 12 | E 12 | E 11 | E 11 | E 10 | E 10 | E 10 | ESE 5 | ESE 5 | E 10 | E 9 | E 11 | E 10 | E 10 |
Wave Graph | |||||||||||||||||||||
116 | 81 | 136 | 366 | 413 | 306 | 181 | 136 | 129 | 86 | 83 | 51 | 50 | 50 | 14 | 8 | 30 | 15 | 36 | 51 | 69 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | glassy | on | on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 5:27PM1.74m | 3:54AM1.92m | 6:07PM1.86m | 4:54AM2.01m | 6:39PM1.95m | 5:43AM2.11m | 7:09PM2.03m | 6:27AM2.18m | 7:37PM2.08m | 7:08AM2.22m | 8:05PM2.11m | 7:48AM2.22m | 8:32PM2.12m | ||||||||
Low Tide | 10:14AM0.55m | 10:23PM1.34m | 11:08AM0.43m | 11:20PM1.24m | 11:53AM0.33m | 00:03AM1.12m | 12:32PM0.26m | 00:41AM0.99m | 1:07PM0.25m | 1:17AM0.87m | 1:41PM0.28m | 1:51AM0.76m | 2:13PM0.35m | 2:26AM0.69m | |||||||
5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:00 | — | — | |
— | 7:09 | — | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:05 | — | |
mm | 3 | 3 | 8 | 2 | — | 2 | — | — | — | — | — | 6 | 3 | 7 | 17 | 12 | 3 | 6 | 1 | 4 | — |
Temp °C | 29 | 29 | 28 | 30 | 30 | 28 | 30 | 30 | 28 | 30 | 30 | 28 | 28 | 27 | 27 | 27 | 28 | 26 | 29 | 28 | 27 |
Feels °C | 30 | 30 | 29 | 32 | 32 | 31 | 34 | 34 | 33 | 34 | 34 | 32 | 32 | 32 | 31 | 30 | 30 | 30 | 32 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | WSW 11 | WSW 12 | WSW 11 | SW 11 | S 10 | S 11 | S 10 | S 10 | SSW 9 | SSW 9 | S 9 | S 8 | SW 8 | SW 8 | SSW 8 | SSW 8 | SW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 9 |
1134 | 583 | 150 | 698 | 766 | 649 | 520 | 499 | 418 | 344 | 155 | 140 | 102 | 100 | 90 | 113 | 74 | 125 | 131 | 151 | 124 | |
Swell 2 Height (m) Direction Period (s) | E 10 | E 9 | E 9 | E 14 | SW 11 | SW 11 | SW 10 | E 12 | E 12 | E 11 | SW 9 | SW 10 | S 9 | S 8 | S 8 | S 8 | S 8 | E 9 | E 11 | E 10 | E 10 |
116 | 81 | 71 | 366 | 568 | 332 | 173 | 136 | 129 | 86 | 119 | 76 | 129 | 89 | 49 | 35 | 51 | 15 | 36 | 51 | 69 | |
Swell 3 Height (m) Direction Period (s) | E 15 | E 15 | E 14 | W 10 | E 13 | E 12 | E 12 | SW 10 | ENE 6 | E 6 | E 11 | E 10 | E 10 | E 10 | ESE 5 | ESE 5 | E 10 | ESE 4 | SE 4 | W 5 | — |
17 | 38 | 136 | 71 | 413 | 306 | 181 | 82 | 11 | 15 | 83 | 51 | 50 | 50 | 14 | 8 | 30 | 4 | 5 | 2 | — | |
Wind waves Height (m) Direction Period (s) | S 10 | S 10 | S 10 | S 11 | SSE 10 | — | — | — | — | — | — | ESE 6 | ESE 4 | E 5 | — | — | — | — | — | — | SSE 8 |
2053 | 2229 | 1917 | 831 | 586 | — | — | — | — | — | — | 20 | 7 | 11 | — | — | — | — | — | — | 48 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 616 | 599 | 599 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 13 | 13 | 13 | 13 | 13 | 10 | 10 |
Best forecast wave conditions in Okinawa | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
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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.











