Is it citrus in general, or more of an aversion to lemon in particular?
Hermes Un Jardin en Mediterranee and apres la mousson are my go-to summer scents, but you might find them too feminine.
Tommy Bahama has some inexpensive frags to try for the summer months.
TB-TB is a nice pepper leather frag with enough fruit to be summer.
TB-set sail (any) are pretty summery, with an ozonic feel