Hanuman is the avatar of lord Shiva..

Someone raises the question as to whether there is any statement in Ramayanam that Hanuman is the avatar of lord Shiva..
I can reply only like this.
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There are varying perceptions on this..
The birth and growth of Hanuman is part of Uttarakandam of Ramayana ..
and some treat Uttarakandam not as part of the mainstream Ramayanam at all
Then the level of Avataram.. it can be full avataram, part avataram, and even lesser avatarams..
Parashurama too is considered a partial avataram of Vishnu.
But he was defeated by Rama who is also a avatar of Vishunu.
In uttarakandam, the role of Bhagavan Shiva in the birth of Anjaneya is clearly stated...
and many believers trust that Anjaneya is the incarnation of Shiva..
And a scene in Sundarakandam where Ravana, is led to ponder whether the monkey Hanuman who was sitting in front of him was Bhagavan Nandi himself..
I answer the question in this perspective ..
But please note..
The puranas and itihasas are so wide they cover vast specte.. having so many versions..
Most of the inferences drawn will be from intelligent deductions from the contents of various texts and versions and also from the commentaries given by scholars and seers who lived over centuries..
If you are trying to argue out a fact in any one manner about the veracity of any of the contents of the ancient puranas and itihasas, you are likely to reach nowhere.. except creating controversies..
I would simply say I trust Hanuman was an incarnation of Lord Shambhu..
Even if I just assert that it is just my faith, I am not wrong in that..
Various scholars on Ramayanam have repeatedly asserted the power of Shiva in Hanuman..
And no one has ever denied that fact.. Is that not good enough?