UCSC Transfer with 59 credits

I got accepted at UCSC as a transfer student for the Fall 2018 session, however I will end up with 59 credits not 60 credits (required for UC transfers).
Is the 60 credits requirement very strictly followed? What if I get my credits thru summer classes?

usually, yes.the limit is strictly enforced and no summer classes aren’t allowed… Your application showed which classes you planned to take to accumulate your 60 units. You didn’t do what you told them and are a unit short. You should call TODAY and tell them what’s up. See if they will allow some flexibility.
Good luck