Full of beans in Greece, mad about temperature (9)
I believe the answer is:
energetic
'full of beans' is the definition.
(full of beans can informally mean full of energy)
'in greece mad about temperature' is the wordplay.
'mad' indicates anagramming the letters.
'about' indicates putting letters inside.
'temperature' becomes 't' (abbreviation).
'in'+'greece'='ingreece'
'ingreece' with letters rearranged gives 'energeic'.
'energeic' going around 't' is 'ENERGETIC'.
(Other definitions for energetic that I've seen before include "Lively, dynamic" , "Lively, spirited" , "Brisk" , "It's vital" , "High-powered" .)