If you planning to travel to Lake Poroto, Shiraoi-cho, 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 9:41 PM. The temperature feels like 42 with a humidity level of 65 so dress accordingly. Cloud coverage is 67 percent with visibility at 12.7 percent. Today’s UV index is 1, don’t forget the sunscreen if you need it! Today’s winds are traveling west at a speed of 9 MPH. At the end of the day don’t miss the sunset at 6:57 AM.