Most visits to the Vatican City are trouble-free but you should be aware of the global risk of indiscriminate international terrorist attacks, which could be against civilian targets, including places frequented by foreigners.
Vatican City State is a landlocked sovereign city-state whose territory consists of a walled enclave within the city of Rome, the capital city of Italy.
The Vatican climate is the same as Rome's; a temperate, Mediterranean climate with mild, rainy winters from September to mid-May and hot, dry summers from May to August.