Divine comedy actually starts in wood (8)
I believe the answer is:
forecast
'divine' is the definition.
(I've seen this before)
'comedy actually starts in wood' is the wordplay.
'starts' indicates taking the first letters.
'in' means one lot of letters goes inside another.
'wood' becomes 'forest' ('forest' can be a synonym of 'wood'**).
The first letters of 'comedy actually' is 'ca'.
'ca' put inside 'forest' is 'FORECAST'.
(Other definitions for forecast that I've seen before include "Tell in advance what will happen" , "Predict as with weather" , "Prophesy" , "Predict (event)" , "Meteorological surmise perhaps" .)