If you planning to travel to Mount Asama, Karuizawa, 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 10:01 PM. The temperature feels like 15.35 with a humidity level of 72 so dress accordingly. Cloud coverage is 5 percent with visibility at 10.1 percent. Today’s UV index is 3, don’t forget the sunscreen if you need it! Today’s winds are traveling northwest at a speed of 9 MPH. At the end of the day don’t miss the sunset at 7:56 AM.