At the end of months, they may still be hot (6)
I believe the answer is:
embers
'at the end' is the definition.
I can't judge whether this definition defines the answer.
'months they may still be hot' is the wordplay.
I cannot really see how this works, but
'months' could be 'm' and 'm' is found within the answer.
'be' is present in the answer.
The remaining letters 'ers' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'of' is the link.
Can you help me to learn more?
(Other definitions for embers that I've seen before include "Live coals" , "Remains of coal fire" , "Glowing fire remnants" , "Vestiges of fire" , "Ashes" .)