is this sentence a noun clause ?

i am sitting in the beach where the sun is shining.

if not how should i make it a noun clause using (where the sun is shining)

3 answers

In that sentence "where the sun is shining" is telling where, so it's adverbial.

Try starting the sentence with that clause -- make it the subject of your sentence.
where the sun is shining is in NY

is this right?
Yes, that works. You could also say any of the following --

Where the sun is shining is where I want to be.

I want to be where the sun is shining.

He doesn't know where the sun is shining.

(and others)