Lively when affected by sun and wind (6,3,6)
I believe the answer is:
bright and breezy
'wind' is the definition.
I don't know anything about this answer so I cannot judge whether this works.
'lively when affected by sun' is the wordplay.
I cannot really see how this works, but
'lively' could be 'breezy' (similar in meaning) and 'breezy' is found within the answer.
'sun' could be 'tan' (both can mean to get a sun tan) and 'tan' is present in the answer.
This explanation may well be incorrect...
'and' is the link.
Can you help me to learn more?
(Other definitions for bright and breezy that I've seen before include "Happy" , "a fine April morning?" .)