If you planning to travel to Sun Marina Beach, Onna, Japan, here is your 6-day travel weather forecast to make sure you have all the essentials needed during your stay. Start your day when the sunrises at 10:14 PM. The temperature feels like 61.9 with a humidity level of 67 so dress accordingly. Cloud coverage is 58 percent with visibility at 14.9 percent. Today’s UV index is 5, don’t forget the sunscreen if you need it! Today’s winds are traveling south-southwest at a speed of 17 MPH. At the end of the day don’t miss the sunset at 8:43 AM.