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 10:17 PM. The temperature feels like 17.35 with a humidity level of 76 so dress accordingly. Cloud coverage is 87 percent with visibility at 7.1 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling southeast at a speed of 17 MPH. At the end of the day don’t miss the sunset at 7:00 AM.