If you planning to travel to Momoiwa Observatory, Rebun, 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 9:49 PM. The temperature feels like 25.25 with a humidity level of 71 so dress accordingly. Cloud coverage is 65 percent with visibility at 6.1 percent. Today’s UV index is 1, don’t forget the sunscreen if you need it! Today’s winds are traveling east-southeast at a speed of 21 MPH. At the end of the day don’t miss the sunset at 7:03 AM.