If your intent is to return to HI, you fil only an HI resident tax return. You are temporarily away from home and would only file a non resident CA return, if you earned income there. Even then, HI would give you a credit to any tax paid to CA.
From the rules:
"A resident is any individual who meets any of the
following:
• Present in California for other than a temporary or
transitory purpose.
https://www.ftb.ca.gov/forms/2015/15_1031.pdf
