Limit holiday over wet weather (8)
I believe the answer is:
restrain
'limit' is the definition.
(restraining is a kind of limiting)
'holiday over wet weather' is the wordplay.
'holiday' becomes 'rest' (I've seen this before).
'over' means one lot of letters go next to another.
'wet weather' becomes 'rain' (I've seen this before).
'rest'+'rain'='RESTRAIN'
(Other definitions for restrain that I've seen before include "bar" , "In arrest (anagram)" , "Tie up - arrest" , "Prevent (from excess)" , "Keep in check" .)