The Bible strongly condemns spiritism, mediums, the occult, and psychics (Lev. 20:27, Deut. 18:10-13).
The Catechism of the Catholic Church:
God can reveal the future to his prophets or to other saints. Still, a sound Christian attitude consists in putting oneself confidently into the hands of Providence for whatever concerns the future and giving up all unhealthy curiosity about it. Improvidence, however, can constitute a lack of responsibility.
All forms of divination are to be rejected: recourse to Satan or demons, conjuring up the dead or other practices falsely supposed to “unveil” the future. Consulting horoscopes, astrology, palm reading, interpretation of omens and lots, the phenomena of clairvoyance, and recourse to mediums all conceal a desire for power over time, history, and, in the last analysis, other human beings, as well as a wish to conciliate hidden powers. They contradict the honor, respect, and loving fear that we owe to God alone (2115-2116).
If we are looking to anything other than God for help with the present or future, we are violating the first commandment.
If you or someone you know has dabbled in the occult, read what you should do about it here.