Pula in winter is a different city from the summer one, and the honest version is the useful one. The resorts shut, the beaches empty, and the Roman sights you queued for in August are yours alone. It suits people who want the town without the crowd, not people who want the beach.
What closes
Most of Verudela, the apartment and hotel strip on the peninsula, closes from November to April, and the beach bars and many of the seasonal restaurants with it. The old town stays open, but the choice of places to eat and the late-night life shrink. If your plan is swimming and sunbeds, winter is the wrong season; if it is quiet streets and low prices, it is the right one.
What gets better
The Pula Arena in low winter light, with a handful of other visitors, is better than the August crush, and entry is at the low end of the about €10 to €15 range. The Forum, the Arch and the temple are free and empty. Hotel prices drop sharply, often to a fraction of August, so a central room costs little. The old town puts on Advent in December, with stalls and music on the square.
Getting there
Flights are the catch. The summer carriers, Ryanair, easyJet, Jet2 and TUIfly with charters, thin out sharply, and from November to March the network is very light. Most people route via Zagreb, with a bus or a connection, or via Venice and the coastal road. Check the Pula airport guide for the season before you book, because the direct flight you used in summer may not run.
The honest verdict
Winter Pula is cheap, quiet and Roman, with a real Advent and a near-empty Arena. It is not a beach holiday and not a party. If that is the trip you want, it is one of the best-value city breaks in the region. The things to do page lists what runs year-round, and the Pula travel guide frames the season choice.