Yes I'm fairly sure.
It's true moths are usually active at night but that doesn't mean they are never around when it is day.
There's a few features that make me believe this is a moth instead of a butterfly.
For one I think its body looks more like that of a moth (it's quite big and hairy-looking).
Second the legs and antennas which are pretty hairy too (butterflies have smooth ones as far as I know).
And lastly it's resting with its wings open. A moths' resting position is usually with its wings open while a butterfly's resting position is usually with its wings closed (not always of course, but usually).