Go away – it's cloudless on holiday (5,3)
I believe the answer is:
clear off
'go away' is the definition.
(I've seen this before)
'aeur it's cloudless on holiday' is the wordplay.
I cannot quite see how this works, but
'cloudless' could be 'clear' (I've seen this in another clue) and 'clear' is present in the answer.
'on holiday' could be 'off' (I've seen this before) and 'off' is found in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for clear off that I've seen before include "Get lost!" , "Run along!" , "Go away - transparently" , "Begone (colloq.)" , "Leave" .)