Surf Forecasts:
Yonabaru surf forecast from 5 Sep 2026:
- Best quality surf: Saturday 5 Sep, 3PM (local time) - 3ft (0.9m), 10s period, N swell with offshore winds.
- Most powerful swell: Tuesday 8 Sep, 12PM (local time) - 5ft (1.5m), 9s period, N swell with 356 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 3PM (local time) - 3ft (0.9m), 10s period with N swell.
Best Forecast Surf Conditions for Yonabaru this week:
The surf forecast for Yonabaru over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Sep 05) at 3PM. The primary swell is predicted to be 0.9m and 10s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Yonabaru in the next 16 days are 1.5m 9s and forecast to arrive on Tuesday (Sep 08) at 12PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 7s period and expected on Saturday (Sep 05) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Sat 5th Sep) | 3ft (0.9m) 10s |
| Best Surf | 3PM (Sat 5th Sep) | 3ft (0.9m) 10s |
| Most Powerful | 12PM (Tue 8th Sep) | 5ft (1.5m) 9s |
Table - best surf conditions forecast for Yonabaru over the next 16 days.
The Lowdown
Hey folks, Rusty here. Let’s talk about what’s on offer at Yonabaru. Straight up, I gotta be honest with you – there isn’t a single standout session across this whole 16-day stretch. The water’s sitting at about average for this time of year, around 84°, so nothing weird there, but the rest of it is a bit of a battle.
The forecast kicks off on Saturday morning, the 5th of September, with a NW swell around 5ft pushing through. The energy is moderate at 485, but that storm risk and a 16 mph cross-off wind are making it more of a wrestle than a wave. By the afternoon, the swell drops to 3ft from the north, and while the wind goes offshore, the conditions are just ordinary.
Sunday the 6th through the next few days is a write-off. You’ve got a mix of cross-on and onshore winds, short-period chop, and swells that never really line up. The energy stays weak to moderate, and the wave comment says it all: poor. This continues right through until about the 13th of September.
There’s a gap in any real quality here, folks. From the 5th right up to the 15th, you’re looking at either small wavelets or messy, wind-affected junk. The 15th of September morning brings a slight uptick – a 3ft swell from the east with a light breeze, but it’s cross-on and the energy is only moderate at 271. It’s surfable but not worth writing home about.
The bottom line: no true standout sessions. The best you can hope for is the morning of the 15th of September, when the swell is 3ft from the east, and the wind is light. It’s not special, but it’s the most tolerable window. The rest of the 16 days is a real flat spot.
Rusty.
Short Range ForecastModerate rain (total 18mm), heaviest on Sat afternoon. Warm (max 29°C on Sat morning, min 27°C on Sat night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Thu afternoon. Warm (max 29°C on Thu morning, min 26°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | |||||||||||||||
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) | NW 9 | N 10 | N 11 | ENE 6 | NE 5 | NNE 6 | NNW 7 | ENE 10 | N 9 | NNW 9 | N 9 | N 8 | N 8 | N 7 | N 7 | NNW 7 | NNW 7 | N 9 | SE 7 | SE 6 | SE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 449 | 167 | 56 | 151 | 63 | 269 | 118 | 59 | 189 | 311 | 356 | 181 | 133 | 126 | 67 | 47 | 48 | 127 | 139 | 66 | 113 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | on | cross-on | cross-on | cross | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | on | cross | cross-on | cross-on |
High Tide | 2:28PM1.53m | 00:28AM1.76m | 4:15PM1.63m | 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 | ||||||||
Low Tide | 6:31PM1.41m | 8:32AM0.70m | 8:58PM1.41m | 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 | ||||||||
 | |  |  | |  | | | | | |  |  | |  | | | | | | | |
 | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — |
 | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:38 | — | — | 6:37 | — |
mm | 2 | 7 | 8 | — | 1 | — | — | — | — | — | — | — | 1 | 1 | 1 | 1 | 3 | 2 | 1 | — | 2 |
Temp °C | 29 | 28 | 28 | 29 | 29 | 27 | 29 | 29 | 27 | 28 | 28 | 26 | 28 | 28 | 26 | 29 | 28 | 27 | 29 | 29 | 28 |
Feels °C | 32 | 32 | 30 | 31 | 31 | 28 | 30 | 30 | 29 | 28 | 27 | 26 | 29 | 28 | 27 | 31 | 31 | 31 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | NW 9 | SSW 8 | WNW 7 | SSW 8 | SSW 9 | E 9 | ENE 8 | S 9 | NW 8 | S 9 | E 10 | S 8 | SW 8 | S 8 | N 7 | NNW 7 | NNW 7 | N 9 | N 8 | SE 6 | SE 8 |
| kJ | 449 | 223 | 147 | 153 | 158 | 120 | 96 | 74 | 142 | 40 | 48 | 32 | 16 | 18 | 67 | 47 | 48 | 127 | 66 | 66 | 113 |
Swell 2 Height (m) Direction Period (s) | ESE 8 | N 10 | SSW 8 | NW 8 | E 9 | S 9 | S 9 | ENE 10 | SSW 9 | ENE 11 | SW 8 | ENE 9 | SSE 9 | ENE 8 | S 7 | SE 9 | SE 9 | ESE 9 | E 15 | N 9 | N 8 |
| kJ | 19 | 167 | 136 | 15 | 57 | 79 | 55 | 59 | 77 | 44 | 17 | 27 | 16 | 13 | 17 | 21 | 28 | 16 | 39 | 40 | 22 |
Swell 3 Height (m) Direction Period (s) | E 10 | W 7 | N 11 | NW 8 | NW 7 | E 13 | E 13 | ESE 8 | ENE 10 | SW 8 | SSE 9 | SE 10 | ENE 8 | SE 10 | SE 9 | S 7 | S 7 | S 8 | E 9 | S 7 | E 15 |
| kJ | 17 | 69 | 56 | 9 | 14 | 3 | 3 | 14 | 43 | 10 | 28 | 4 | 14 | 14 | 22 | 9 | 9 | 10 | 7 | 26 | 42 |
Wind waves Height (m) Direction Period (s) | SSW 9 | S 8 | S 8 | ENE 6 | NE 5 | NNE 6 | NNW 7 | NNW 6 | N 9 | NNW 9 | N 9 | N 8 | N 8 | N 7 | — | ENE 2 | E 3 | E 5 | SE 7 | — | — |
| kJ | 316 | 165 | 35 | 151 | 63 | 269 | 118 | 137 | 189 | 311 | 356 | 181 | 133 | 126 | — | 1 | 5 | 40 | 139 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 33 | 0 | 727 | 16 | 727 | 727 | 670 | 792 | 13 | 670 | 792 | 14 | 670 | 670 | 14 | 777 | 47 | 10 | 51 | 27 | 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.
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