If you planning to travel to Nanatsugama Limestone Cave, Saikai, 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 10:19 PM. The temperature feels like 41.8 with a humidity level of 60 so dress accordingly. Cloud coverage is 9 percent with visibility at 14.9 percent. Today’s UV index is 4, don’t forget the sunscreen if you need it! Today’s winds are traveling west at a speed of 4 MPH. At the end of the day don’t miss the sunset at 8:18 AM.