He famously said, "Science without religion is lame, religion without science is blind." This suggests he saw value in both scientific and spiritual approaches to understanding the world, but likely believed that astrology fell short of scientific rigor.
It's important to note that Einstein did not publicly discuss astrology at length, so we can't definitively say what his personal opinion was. However, based on his known views on science and the universe, it's safe to assume he would have been skeptical of its validity.