Surf Forecasts:
Yonabaru surf forecast from 24 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 6AM (local time) - 11ft (3.5m), 17s period, ESE swell with cross-shore winds.
- Most powerful swell: Tuesday 25 Aug, 3PM (local time) - 13ft (4.0m), 16s period, ESE swell with 8,718 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 6AM (local time) - 11ft (3.5m), 17s period with ESE 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 Tuesday (Aug 25) at 6AM. The primary swell is predicted to be 3.5m and 17s period. The wind is predicted to be cross-shore as the swell arrives.
The most powerful waves expected at Yonabaru in the next 16 days are 4.0m 16s and forecast to arrive on Tuesday (Aug 25) at 3PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.5m 10s period and expected on Wednesday (Aug 26) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Tue 25th Aug) | 11ft (3.5m) 17s |
| Best Surf | 6AM (Tue 25th Aug) | 11ft (3.5m) 17s |
| Most Powerful | 3PM (Tue 25th Aug) | 13ft (4.0m) 16s |
Table - best surf conditions forecast for Yonabaru over the next 16 days.
The Lowdown
Alright, I’m Rusty, and here’s the long-range look at your local stretch.
Honestly, this is a tough forecast to call. The first 16 days have a real mixed bag, with only a few serious windows of opportunity. We’ve got a big gap of poor surf for days on end, then a couple of heavy – and I mean *heavy* – pulses that are only for the brave. Let’s get into it.
The only break on the radar is Yonabaru (Okinawa, Japan). For beginners, it’s a fairly consistent spot, but it doesn’t always fire. The water’s sitting at a warm 84°F, which is pretty much average for this time of year, so no surprises there.
We kick off the outlook on Monday, the 24th of August. Not much to get excited about. A weak 2 ft SE swell with a screaming long period of 16 seconds, but it’s just not packing enough punch (270 combined energy). The wind is onshore, so it’s messy. Afternoon looks a bit bigger at 5 ft from the ESE, but with thunderstorm risk and onshore breeze, it’s a washout. Tuesday morning, the 25th, is where things get interesting. A solid 13 ft ESE swell rolls in, but there’s a catch. The period is a long 16 seconds, and the energy is massive (7473). The wind is cross-shore, but the swell is simply too big for this break. This is expert-only territory, and even then, it’s a beast. The afternoon holds the same size and direction, with a slightly better cross-offshore wind, but it’s still 13 ft – that’s a heavy paddle out.
Wednesday the 26th turns ugly. Strong winds from the west (34 mph) and a big 8 ft NW swell, but the wind is a near gale. It’s offshore, which keeps it clean, but you’ll be fighting for your life just to get out. The energy is still high (2085). This is more of a kite session than a paddle session. Thursday and Friday through the weekend are all poor – small, choppy, and onshore. The swell drops to 1 ft on Thursday, with strong cross-offshore winds. It’s a dead zone.
We get a bit of a reprieve on Monday, the 31st of August, but it’s still not great. A 6 ft ESE swell with onshore winds. The energy is moderate (470), but the quality is poor. This continues through Tuesday, the 1st of September, with a 8 ft ESE swell and cross-onshore wind. The period is a decent 10 seconds, but it’s lumpy.
Then, on Wednesday the 2nd, we get another big one. A 12 ft ESE swell with a period of 11 seconds. The energy is massive (4645), but the wind is a strong cross-shore making a mess. It’s a washing machine. Thursday the 3rd is the real standout. A monster 25 ft SE swell, with a very long period of 14 seconds, and a cross-offshore wind. The energy is off the charts (21919). The wind is a severe gale, but it’s offshore, so the face will be clean. This is for absolute experts only – it’s going to be a full-on, dangerous, heavy-water session. After that, Friday the 4th sees a sharp drop, with a 8 ft SE swell and strong offshore wind, but it’s hard to paddle into. The energy is moderate (771).
The final days of the outlook, from Saturday the 5th to Tuesday the 8th of September, are a quiet fade-out. Small swells (2 ft to 6 ft), mostly from the ESE or NW, with light to moderate winds. The conditions are "surfable but very ordinary" or marginal. The best of this last week is Sunday the 6th, with a 3 ft NW swell, light winds, and clean conditions. It’s tiny, but it’s the closest to a relaxed paddle you’ll get.
So, to sum it up: the best two windows are Tuesday the 25th of August for the brave, and Thursday the 3rd of September for the suicidal. The rest is a long, flat, or messy slog. If you’re a beginner, stay away from the big swells. If you’re an expert, mark that Thursday the 3rd on your calendar, but keep an eye on the wind.
Rusty.
Short Range ForecastHeavy rain (total 43mm), heaviest during Tue night. Warm (max 29°C on Mon afternoon, min 26°C on Mon night). Winds increasing (light winds from the E on Mon morning, near gales from the WNW by Tue night). | Days 4-6 Weather SummaryHeavy rain (total 22mm), heaviest during Thu morning. Warm (max 29°C on Fri morning, min 27°C on Thu morning). Winds decreasing (strong winds from the S on Thu morning, light winds from the SE by Fri night). | ||||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||||
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) | SE 16 | ESE 17 | ESE 17 | ESE 16 | ESE 16 | E 14 | NNW 11 | NW 11 | E 8 | E 13 | E 13 | ESE 6 | ESE 7 | ESE 7 | SE 7 | ESE 7 | SE 6 | SE 8 | SE 7 | ESE 7 | ESE 7 |
Wave Graph | |||||||||||||||||||||
251 | 1107 | 3691 | 7473 | 8718 | 4458 | 1311 | 1509 | 34 | 53 | 51 | 104 | 163 | 108 | 381 | 139 | 253 | 444 | 211 | 163 | 197 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on |
High Tide | 5:37PM1.81m | 4:23AM1.93m | 6:10PM1.92m | 5:17AM2.04m | 6:38PM2.01m | 6:03AM2.14m | 7:05PM2.07m | 6:44AM2.21m | 7:32PM2.12m | 7:23AM2.23m | 7:57PM2.14m | 8:01AM2.21m | 8:23PM2.15m | ||||||||
Low Tide | 10:33AM0.53m | 10:52PM1.26m | 11:22AM0.42m | 11:37PM1.12m | 12:03PM0.34m | 00:15AM0.96m | 12:39PM0.31m | 00:49AM0.82m | 1:12PM0.32m | 1:22AM0.69m | 1:44PM0.38m | 1:56AM0.60m | 2:14PM0.48m | 2:31AM0.54m | |||||||
6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | |
— | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | |
mm | 2 | 1 | — | — | — | 17 | 3 | 5 | 15 | 5 | 4 | 1 | — | 2 | 3 | 5 | 2 | — | — | — | — |
Temp °C | 28 | 29 | 27 | 29 | 29 | 28 | 28 | 27 | 28 | 27 | 27 | 28 | 29 | 29 | 27 | 28 | 28 | 28 | 29 | 29 | 27 |
Feels °C | 32 | 31 | 31 | 31 | 30 | 26 | 24 | 24 | 26 | 25 | 27 | 28 | 31 | 31 | 31 | 30 | 29 | 29 | 31 | 31 | 28 |
Swell 1 Height (m) Direction Period (s) | SE 16 | ESE 17 | ESE 17 | ESE 16 | ESE 16 | E 14 | NNW 11 | NW 11 | W 11 | WSW 11 | E 13 | SW 12 | SSW 10 | ESE 7 | SSW 11 | SSW 11 | SSW 10 | SW 10 | S 9 | S 9 | SSW 9 |
251 | 1107 | 3691 | 7473 | 8718 | 4458 | 1311 | 1509 | 1269 | 1878 | 51 | 1791 | 512 | 108 | 862 | 698 | 360 | 113 | 106 | 83 | 86 | |
Swell 2 Height (m) Direction Period (s) | SW 9 | SW 9 | E 7 | SW 9 | SW 9 | SW 9 | NNE 12 | ESE 10 | E 8 | ESE 8 | E 18 | E 12 | WSW 12 | E 15 | E 13 | E 13 | ENE 13 | SSW 10 | SW 9 | SW 9 | SW 10 |
91 | 99 | 81 | 50 | 39 | 27 | 565 | 59 | 34 | 19 | 6 | 26 | 414 | 38 | 32 | 55 | 96 | 96 | 70 | 65 | 65 | |
Swell 3 Height (m) Direction Period (s) | SW 10 | ENE 11 | SW 9 | — | — | — | E 11 | E 14 | E 13 | E 13 | E 18 | E 16 | E 12 | E 12 | SE 12 | ENE 13 | E 13 | E 12 | E 12 | E 12 | E 11 |
36 | 91 | 64 | — | — | — | 209 | 35 | 31 | 53 | 6 | 5 | 25 | 11 | 6 | 139 | 87 | 47 | 44 | 44 | 23 | |
Wind waves Height (m) Direction Period (s) | E 5 | E 6 | — | — | N 6 | N 8 | W 8 | SW 8 | SSW 9 | S 8 | SW 12 | ESE 6 | ESE 7 | SSW 10 | SE 7 | ESE 7 | SE 6 | SE 8 | SE 7 | ESE 7 | ESE 7 |
19 | 67 | — | — | 141 | 1342 | 2163 | 1980 | 1864 | 779 | 3430 | 104 | 163 | 746 | 381 | 138 | 253 | 444 | 211 | 163 | 197 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 13 | 14 | 13 | 13 | 607 | 607 | 607 | 607 | 616 | 616 | 716 | 670 | 13 | 13 | 13 | 10 | 1013 | 13 | 756 | 13 | 16 |
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.











