If you planning to travel to Koishikawa Botanical Garden, 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 9:10 PM. The temperature feels like 57.45 with a humidity level of 71 so dress accordingly. Cloud coverage is 70 percent with visibility at 14.2 percent. Today’s UV index is 2, don’t forget the sunscreen if you need it! Today’s winds are traveling north-northwest at a speed of 7 MPH. At the end of the day don’t miss the sunset at 7:37 AM.