
Surf Forecasts:
Yonabaru surf forecast from 31 Jul 2026:
- Best quality surf: Wednesday 5 Aug, 3PM (local time) - 11ft (3.5m), 18s period, E swell with cross-shore winds.
- Most powerful swell: Thursday 6 Aug, 3PM (local time) - 21ft (6.5m), 19s period, E swell with 29,913 kJ wave energy.
- Next surfable swell (1★+): Sunday 2 Aug, 3AM (local time) - 1ft (0.3m), 18s 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 Sunday (Aug 02) at 3AM. The primary swell is predicted to be 0.3m and 18s period with a secondary swell of 0.3m and 9s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Yonabaru in the next 16 days are 6.5m 19s and forecast to arrive on Thursday (Aug 06) at 3PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 10.0m 13s period and expected on Friday (Aug 07) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Sun 2nd Aug) | 1ft (0.3m) 18s |
| Best Surf | 3PM (Wed 5th Aug) | 11ft (3.5m) 18s |
| Most Powerful | 3PM (Thu 6th Aug) | 21ft (6.5m) 19s |
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 cookin’ for this stretch of coast.
Right off the bat, we’re looking at a pretty grim run of surf. The first few days are almost non-existent. The swell is tiny, and the wind is all over the shop. We’re talking about a real dry spell. Things don’t start to get interesting until Monday, August 2nd, when we see a bit of life in the water. The ESE swell builds to 2ft with a very long period of 17 seconds, and the combined energy jumps to 188 (moderate). That’s a taste of the groundswell to come, but the wind is still cross-off, so it’s not all bad. But honestly, it’s still pretty ordinary.
The first real standout is shaping up for Monday, August 3rd, and the morning is the pick. The swell is up to 3ft from the ESE (15-second period), with combined energy now at 487 (moderate). The wind is a clean cross-off from the NNW, so the waves should have some shape. The water’s a touch warmer than normal at 86°, so the conditions are about as good as it gets for a beginner-friendly break like Yonabaru. The crowd profile says “sometimes,” so you might have to share the peak, but it won’t be a zoo.
As we head into Tuesday, August 4th, the swell jumps again. The morning offers 5ft from the ESE (18-second period, very long period groundswell). The combined energy is a solid 1480 (strong). The wind is light and cross-shore. This is a good setup for Yonabaru, but with that long period, the waves might be a bit too straight for the beach break. Still, it’s the best window of the week. The afternoon sees the wind shift to a cross-on, which will mess up the faces a bit.
Now, the big news is Wednesday, August 5th. The swell is hitting 12ft from the E (18-second period) in the afternoon, with a massive combined energy of 7236 (very strong). That’s serious power. The wind is cross-shore, but the numbers are screaming “too big for this break.” This is expert-only territory. The forecast says the wind and tide are favorable, but the swell is too big. If you’re a pro, maybe. But for mere mortals? It’s a no-go.
Into Thursday, August 6th, the swell is even bigger – 21ft (19-second period, very long period) with a combined energy of 34651 (very strong). The wind is a near gale, cross-shore with crossing waves. This is a dangerous mess. Totally unsurfable for anyone.
From Friday, August 7th, through the rest of the outlook, it’s a complete write-off. The wind is a violent storm or hurricane-force, and the swell is either tiny or chaotic. The combined energy drops to 44 (weak) or less. The surf is just a total washout, with poor conditions and dangerous winds. The last real chance for a wave is on Sunday, August 16th, where the swell is 4ft from the E (14-second period) with a combined energy of 492 (moderate). The wind is light and onshore, so it’s marginal. Not something to get excited about.
So, to sum it up: the best bet is the morning of Monday, August 3rd, at Yonabaru. Clean, 3ft ESE swell, cross-off wind. It’s the only truly decent surf in the whole 16-day window. The rest is either too small, too blown out, or too dangerous. Don’t plan a trip around this one.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Mon night. Warm (max 31°C on Mon morning, min 28°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 39mm), heaviest during Thu night. Warm (max 31°C on Tue afternoon, min 28°C on Tue night). Winds increasing (light winds from the NNE on Tue morning, stormy winds from the N by Thu night). | ||||||||||||||||||||
Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | |||||||||||||||
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 10 | SE 10 | SE 9 | ESE 16 | ESE 17 | ESE 16 | ESE 15 | ESE 16 | ESE 16 | ESE 18 | ESE 18 | E 18 | E 18 | E 18 | E 19 | E 19 | E 19 | N 12 | NW 11 | ENE 15 | ENE 16 |
Wave Graph | |||||||||||||||||||||
16 | 17 | 13 | 47 | 168 | 357 | 474 | 671 | 783 | 1480 | 2042 | 2456 | 4272 | 7236 | 14897 | 27294 | 29913 | 17000 | 1045 | 44 | 25 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | glassy | cross-off | cross-off | cross | cross | cross-off | cross | cross | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross-on | cross-on |
High Tide | 9:06PM2.08m | 8:54AM2.11m | 9:36PM2.06m | 9:37AM2.00m | 10:07PM2.03m | 10:25AM1.86m | 10:40PM1.99m | 11:23AM1.70m | 11:19PM1.94m | 12:42PM1.57m | 00:09AM1.88m | 2:39PM1.53m | 1:17AM1.84m | ||||||||
Low Tide | 2:43PM0.35m | 2:57AM0.78m | 3:16PM0.48m | 3:37AM0.75m | 3:49PM0.64m | 4:21AM0.74m | 4:23PM0.82m | 5:12AM0.75m | 5:01PM1.01m | 6:16AM0.76m | 5:49PM1.19m | 7:36AM0.75m | 7:05PM1.34m | ||||||||
5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | |
— | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:14 | — | — | 7:13 | — | — | 7:12 | — | — | 7:12 | — | |
mm | — | — | — | — | — | — | — | — | 4 | 2 | 1 | 1 | — | — | 1 | 3 | 4 | 27 | 76 | 42 | 29 |
Temp °C | 30 | 30 | 29 | 30 | 30 | 29 | 31 | 31 | 29 | 30 | 31 | 29 | 31 | 31 | 29 | 29 | 29 | 29 | 29 | 29 | 30 |
Feels °C | 34 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 32 | 34 | 35 | 32 | 33 | 32 | 29 | 26 | 25 | 23 | 16 | 20 | 31 |
Swell 1 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 9 | ESE 16 | ESE 17 | ESE 16 | ESE 15 | ESE 16 | ESE 16 | ESE 18 | ESE 18 | E 18 | E 18 | E 18 | E 19 | E 19 | E 19 | E 16 | NW 11 | ENE 15 | WSW 14 |
16 | 17 | 13 | 47 | 168 | 357 | 474 | 671 | 783 | 1480 | 2042 | 2456 | 4272 | 7236 | 14897 | 27294 | 29913 | 13992 | 1045 | 44 | 6868 | |
Swell 2 Height (m) Direction Period (s) | SW 8 | SSW 8 | S 7 | SE 9 | SE 9 | E 8 | ENE 8 | S 7 | S 7 | S 9 | SSW 8 | — | SSW 7 | — | — | — | — | — | NNE 12 | — | ENE 16 |
10 | 6 | 4 | 13 | 20 | 12 | 13 | 4 | 4 | 14 | 23 | — | 11 | — | — | — | — | — | 746 | — | 25 | |
Swell 3 Height (m) Direction Period (s) | E 9 | E 9 | SSW 8 | ESE 7 | S 7 | SE 9 | SSE 9 | SW 7 | SW 7 | — | — | — | — | — | — | — | — | — | E 12 | — | — |
6 | 6 | 6 | 5 | 4 | 13 | 8 | 2 | 2 | — | — | — | — | — | — | — | — | — | 563 | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | W 7 | N 3 | N 4 | N 5 | — | SE 8 | NE 8 | — | NNE 7 | N 8 | N 10 | N 12 | SSW 11 | SSW 14 | S 12 |
— | — | — | — | — | — | 4 | 3 | 13 | 13 | — | 28 | 139 | — | 385 | 1837 | 4738 | 17000 | 14353 | 32614 | 9373 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1424 | 1422 | 672 | 14 | 0 | 14 | 48 | 14 | 14 | 14 | 17 | 14 | 47 | 727 | 607 | 760 | 727 | 607 | 855 | 727 | 727 |
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.











