If you planning to travel to Mauna Kea Observatory, Hawaii, 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 4:30 PM. The temperature feels like 50.599999999999994 with a humidity level of 84 so dress accordingly. Cloud coverage is 20 percent with visibility at 8 percent. Today’s UV index is 7, don’t forget the sunscreen if you need it! Today’s winds are traveling east-southeast at a speed of 6 MPH. At the end of the day don’t miss the sunset at 3:39 AM.