If you planning to travel to Iwamuro 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 9:51 PM. The temperature feels like 29.15 with a humidity level of 73 so dress accordingly. Cloud coverage is 80 percent with visibility at 8 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling west-northwest at a speed of 8 MPH. At the end of the day don’t miss the sunset at 7:26 AM.