I believe for the majority of the summer the zoo will be open from 9am to 9pm. Access should remain open to most if not all of the zoo, but the aviaries close when the sun goes down and some animals may be put in before closing.Not really a news question at all - but, in the summer, what sort of opening hours does the zoo have? The website only lists opening times a few months in advance, but would I be correct in thinking that it stays open relatively late through July and August? If so, is there free access around the zoo grounds?