If you planning to travel to Karuizawa Station Building Memorial, 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 9:57 PM. The temperature feels like 18.75 with a humidity level of 54 so dress accordingly. Cloud coverage is 4 percent with visibility at 7 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 8 MPH. At the end of the day don’t miss the sunset at 7:42 AM.