Sundial is a mountain summit located within Olympic National Park, in Jefferson County of Washington state. Sundial is part of The Needles range, which is a subrange of the Olympic Mountains. Its nearest higher neighbor is Mount Clark, to the northwest, and Mount Johnson is set to the west. The climbing routes on Sundial start at class 3 scrambling via the East Face, and range up to class 5 via the South Side Face. The first ascent of the mountain was made in 1944 by Adel and William Degenhardt. The mountain is so named because the time of day can be approximated as an observer in Royal Basin watches the sun's rays make their way down the east face of this mountain in the morning. Precipitation runoff from the mountain drains into Royal Creek which is a tributary of the Dungeness River.