Avoid midsummer if you can - in August you can barely find beach space to lay your towel. Come in spring (April-early June) or autumn (Sept-Oct) instead: it's quieter and cheaper, the weather is perfect for gentle exploration, and swimming is quite feasible until early November (though in April it's chilly).
NB, please do not rely solely on this information for your travel planning.
NAPLES: BY AIR
From the UK: carriers include British Airways and easyJet.
Within Europe: try easyJet, Air France, Lufthansa, Transavia, Helvetic, Air Nostrum, Aer Lingus, SAS, Air Malta, Aerosvit, Alitalia and Meridiana.
AMALFI COAST (AND NAPLES): Don't hire a car: the roads are clogged with coaches and traffic police operate one-way systems through the narrow villages. Parking is expensive and the SITA buses and Metro del Mare boats are frequent and reliable. In addition, there are Circumvesuviana trains between Naples, Sorrento and Pompeii.
CAPRI: You’ll need to take a bus or taxi from the airport to Naples port, where boats to Capri’s Marina Grande depart several times a day (ferries take around 90 minutes, the faster hydrofoils around 50 minutes). Capri is also served by ferries and hydrofoils from Sorrento - the crossing takes 25-40 minutes. It’s worth buying a ticket in advance during high season. Capri also has an efficient bus network, making travel between its towns quick and easy. Note that non-resident cars are not allowed on the island. If you are exploring a wider area however, see our car rental recommendations.