The obvious answer here is the moon in water signs. People with Moon in Cancer are intuitive about themselves and their family members' well-being, Scorpio’s intuition can read your mind – it’s turned towards partners, and Pisces are intuitive in a non-personal way, and sometimes it confuses them, or they don’t know how to deal with it – unless they involve it in some kind of creative expression. I know few artists with Moon in Pisces and they seem to have the 6th sense sometimes very active.
I also like Michelle’s thoughts on this :
I often think that Water is credited with being intuitive while really being instinctive. They have gut level knowing and response- not direct perception. The exception, I think, is Pisces because of its connection with Neptune. Cancer and Scorpio seem to have strong instincts- they feel what they don’t know. Intuition has nothing to do with feelings. Air seems the least intuitive, or instinctual, because they run everything through their minds first. They logically and rationally figure things out. The exception is Aquarius because of its connection to Uranus. Uranus connections speed up cognition processes and help a person to skip steps to reach understanding. Neptune connections blur boundaries and make the unknowable, knowable.