When it's too humid to hunt? (5,6)
I believe the answer is:
close season
'when it's too' is the definition.
I can't tell whether this defines the answer.
'humid to hunt?' is the wordplay.
'humid' becomes 'close' (I've seen this before).
'to hunt?' becomes 'season' (I am not sure about this - if you are sure you should believe this answer much more).
'close'+'season'='CLOSE SEASON'
Can you help me to learn more?
(Other definitions for close season that I've seen before include "Time when shooting game is not allowed" , "Period when it is illegal to kill certain game" , "when the game is safe" , "game, period with no shots?" , "Period when fishing is banned" .)