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Surf Forecasts:
Yona Bay surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 2 am Saturday 18 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 6AM is: 1.2m 8s primary swell from a East direction (forecast issued at 02:00am April 18). An open ocean swell of 1.8m 16s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Apr) | 4ft (1.2m) | 8s |
| Afternoon (18 Apr) | 3.5ft (1.1m) | 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
Saturday 18 | Sunday 19 | Monday 20 | ||||||||||||||||||||||
| 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 | 6 PM | 9 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    | |||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 7 | 13 | 8 | 8 | 9 | 10 | 11 | 10 | 10 | 10 | 9 | 12 | 12 | 12 | 12 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 37 | 17 | 199 | 204 | 251 | 240 | 372 | 255 | 214 | 142 | 73 | 123 | 294 | 264 | 232 | 929 | 929 | 806 | 782 | 673 | 660 | 660 | 569 | 560 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross | on | on | on | cross- on | glass | on | cross- on | on | on | on | on | on | on | cross- on | cross- on | cross- on | on | on | on | on |
High Tide / height (m) | 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 | ||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:01 | - | - | - | - | - | - | - | 6:00 | - | - | - | - | - | - | 5:58 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:52 | - | - | - | - | - | - | - | 6:52 | - | - | - | - | - | - | - | 6:52 | - |
 |  | |  | |  | | | | | |  | | |  |  | | | | | | | | | |
Rain (mm) | - | - | - | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 22 | 22 | 22 | 22 | 23 | 22 | 22 | 22 | 22 | 21 | 21 | 22 | 22 | 21 | 21 | 21 | 20 | 20 | 20 | 22 | 21 | 21 | 21 | 21 |
| Feels °C (?) | 20 | 21 | 23 | 24 | 25 | 22 | 22 | 23 | 25 | 22 | 21 | 22 | 21 | 19 | 19 | 20 | 18 | 18 | 18 | 18 | 17 | 18 | 19 | 19 |
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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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