If you planning to travel to Usui Pass, 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 9:37 PM. The temperature feels like 36.2 with a humidity level of 74 so dress accordingly. Cloud coverage is 0 percent with visibility at 14.9 percent. Today’s UV index is 3, don’t forget the sunscreen if you need it! Today’s winds are traveling west at a speed of 4 MPH. At the end of the day don’t miss the sunset at 7:36 AM.