If you planning to travel to Mashu Onsen, 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 9:28 PM. The temperature feels like 41 with a humidity level of 95 so dress accordingly. Cloud coverage is 90 percent with visibility at 4.7 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling south-southeast at a speed of 12 MPH. At the end of the day don’t miss the sunset at 6:46 AM.