For a first-time visit to the Azores, 7 to 10 days is considered the "sweet spot." This duration allows you to spend 4 or 5 days on the largest and most diverse island, São Miguel, to see the Sete Cidades craters, the Furnas hot springs, and the tea plantations, while still having time to fly or take a ferry to a second island like Pico (for the volcano climb and vineyards) or Terceira (for the historic Angra do Heroísmo). If you only have 3 to 4 days, you should stick exclusively to São Miguel to avoid losing time on inter-island logistics. However, if you are a nature lover or hiker wanting to see the "Triangle" islands (Faial, Pico, and São Jorge), you would ideally need 12 to 14 days. Because the weather in the Atlantic can be unpredictable, having a few "buffer days" in a longer itinerary is a smart move to ensure you don't miss out on activities like whale watching or hiking due to fog or rain. The Azores are about "slow travel," so over-scheduling your days will detract from the peaceful, volcanic beauty that makes the archipelago so special.