Skye is a large island, and there is loads to see. I think you need 2 days minimum to see the major sights on Skye. To explore the island at a slow pace, it would be easy to spend a whole week hiking around the pretty landscapes and visiting the historic ruins and viewpoints.

To truly experience the Isle of Skye without rushing, you need at least three full days. One day is typically dedicated to the Trotternish Loop in the north, which includes the iconic Old Man of Storr, the Quiraing, and the Fairy Glen. A second day is best spent in the west and south, visiting the Fairy Pools, Dunvegan Castle, and the Neist Point Lighthouse for sunset. A third day allows for "buffer time" to account for the island's notoriously unpredictable weather or to take a boat trip to the remote Loch Coruisk. Many travelers make the mistake of attempting a "day trip" from Inverness, which involves six hours of driving and only allows for a glimpse of the most crowded spots. By staying for three nights, ideally based in Portree, you gain the flexibility to hike during "off-peak" hours (early morning or late evening) to avoid the heavy tour bus traffic that can make the island's narrow, single-track roads difficult to navigate during the mid-day rush.