Hello

I've recently got a kitten who is now 15 weeks old, he seems bored in the house and sits looking out of my patio doors hoping to go out!
I had a walk round the garden with him to stop him from meowing and wondered what age can a kitten go outside?
I know he can't go out till he has had his jabs, which are booked in for next week, i've always had cats that have been slightly older so any advice would be appreciated.