If you planning to travel to Great Boiling Valley, Hakone, 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 7:34 PM. The temperature feels like 64.15 with a humidity level of 57 so dress accordingly. Cloud coverage is 6 percent with visibility at 15 percent. Today’s UV index is 11, don’t forget the sunscreen if you need it! Today’s winds are traveling west at a speed of 11 MPH. At the end of the day don’t miss the sunset at 9:38 AM.