Matutinal

from WordNet (r) 3.0 (2006)

matutinal
    adj 1: pertaining to or occurring in the morning; "took his
           matutinal walk"

from The Collaborative International Dictionary of English v.0.48

Matutinal \Mat`u*ti"nal\, a. [L. matutinalis, matutinus: cf. F.
   matutinal. See {Matin}.]
   Of or pertaining to the morning; early.
   [1913 Webster]