yes it is a metaphor.
If it was a simile it would have "like" and "as".
Words and language are often considered faded metaphors because they may not fully capture the depth of an experience or concept. Language can only provide an approximation of reality, leading to a sense of inadequacy in conveying the true essence of what is being described. Metaphors, once original and impactful, can become overused and lose their power over time, hence the term "faded metaphor."
yes because you can't acctualy cut the damp morning.
she has a shiny GLDENbeautiful hair in Summer sun.
Losing a friend is like a summer without a sun.
Metaphor
As relaxing as a tropical island breeze
The dominant metaphor in Shakespeare's sonnet 18 (Shall I compare thee to a Summer's day ......) is youth described as a day in summer. Though properly speaking, since the comparison is made explicit, and since the parallels are developed and become the structure of the poem - this isn't really a metaphor. It is something between a simile and a conceit.
Metaphor
Miss Maudie's house turns into flames.
The literary terms in "Shall I Compare Thee to a Summer's Day" by William Shakespeare include sonnet (14-line poem with a specific rhyme scheme), metaphor (comparing the beauty of the person to a summer's day), and iambic pentameter (meter with five metrical feet per line).
Summer is hot as volcanoe.
in compering the warmness of the person to the warmness of summer day