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Surf Forecasts:
Yona Bay surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 8 pm Friday 17 Apr 2026 JSTForecast update in hr min s Forecast update imminent
Yona Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Yona Bay sea temperature is
24.4° C
(Which is slightly warmer than usual)How big are the waves at Yona Bay today?
The current surf forecast for Yona Bay at 3AM is: 0.2m 13s primary swell from a East-northeast direction and 0.3m 7s secondary swell from a North direction (forecast issued at 08:00pm April 17). An open ocean swell of 2.1m 16s is not directed at the surf break, a second open ocean swell of 0.6m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Apr) | 4ft (1.2m) | 8s |
| Afternoon (18 Apr) | 4ft (1.2m) | 10s |
| Evening (18 Apr) | 3.5ft (1.1m) | 10s |
Table - waves today at Yona Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Fri 17 | Saturday 18 | Sunday 19 | Monday 20 | |||||||||||||||||||||
| 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |   |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 7 | 7 | 13 | 8 | 8 | 9 | 10 | 11 | 10 | 10 | 10 | 9 | 12 | 12 | 12 | 12 | 13 | 14 | 13 | 13 | 13 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 76 | 61 | 37 | 17 | 199 | 205 | 251 | 282 | 372 | 255 | 231 | 142 | 73 | 123 | 289 | 264 | 177 | 806 | 818 | 806 | 794 | 673 | 683 | 680 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | cross- off | cross- off | cross- off | cross- on | on | on | on | cross- on | glass | on | on | on | on | on | on | on | on | cross- on | cross- on | cross- on | on | on |
High Tide / height (m) | 7:21PM 1.86 | 7:09AM 1.87 | 8:02PM 1.85 | 7:40AM 1.89 | 8:46PM 1.79 | 8:14AM 1.87 | ||||||||||||||||||
Low Tide / height (m) | 1:16AM 0.42 | 1:36PM -0.05 | 1:50AM 0.50 | 2:15PM -0.09 | 2:26AM 0.61 | 2:57PM -0.06 | ||||||||||||||||||
Fri 17 | Saturday 18 | Sunday 19 | Monday 20 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:01 | - | - | - | - | - | - | - | 6:00 | - | - | - | - | - | - | 5:58 | - | - | - |
| Sunset | 6:51 | - | - | - | - | - | - | - | 6:52 | - | - | - | - | - | - | - | 6:52 | - | - | - | - | - | - | - |
 |  |  | |  |  | | | | |  | | | | | |  |  | | | | | | | |
Rain (mm) | - | - | - | - | 1 | 1 | 1 | - | - | 1 | 3 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 23 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 22 | 21 | 20 | 21 | 21 | 21 | 22 | 22 | 21 | 21 | 20 | 20 | 21 | 21 | 22 | 22 |
| Feels °C (?) | 22 | 21 | 21 | 21 | 23 | 24 | 25 | 24 | 21 | 21 | 22 | 23 | 21 | 21 | 21 | 21 | 19 | 20 | 18 | 18 | 19 | 18 | 20 | 22 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Yona Bay surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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