What should I pack for Budapest?

Swimwear is the most Budapest-specific thing you'll pack. The city sits on more than 120 natural thermal springs, and you'll likely visit at least one bath. Széchenyi in Városliget keeps its outdoor pools at 38°C year-round. The water smells faintly of sulfur and minerals, and it will stain a white or pastel swimsuit yellowish after 2 or 3 soaks. Pack dark colors. Gellért's indoor pools, at the base of Gellért Hill, require swim caps in certain sections. You can buy one at the entrance for about 800 HUF, roughly $2.60. Bring rubber slides for the wet tile. The changing cabins at Széchenyi run 200-400 HUF more than a standard locker, and the lockers are narrow. A small combination padlock saves the 500 HUF rental fee each visit.

Walking shoes matter more in Budapest than in most European capitals. The Castle District on the Buda side is uneven limestone cobblestone, from Fisherman's Bastion down through Úri utca to Matthias Church, founded in 1255. Flat soles slip on the polished stone when it rains. Thin soles let every cobble bruise your feet after 3 or 4 hours. The Pest side is smoother, but Gellért Hill's path to the Citadella is steep and gravelly in sections. One pair of broken-in shoes with decent grip and cushion handles everything from the Parliament to the Central Market Hall on Fővám tér. That said, keep a light scarf or shawl in your day bag. St. Stephen's Basilica and Matthias Church both require covered shoulders and knees, and they enforce it year-round.

Budapest's climate swings hard between seasons. Summer days reach 34-37°C in June and July, but humidity tends to stay around 20-30%, so the heat feels dry, not sticky. Cotton and linen work fine here. Bring sunscreen rated SPF 30+ because Budapest sits at 47.5°N and the June sun hits hard between 11:00 and 15:00. A light long-sleeve layer saves you in over-cooled restaurants and on the M1 metro line, which still runs its original 1896 rolling stock and has no consistent air conditioning. Winter is a different trip entirely. December through February drops to -5°C routinely, with cold snaps reaching -15°C. The wind along the Danube Promenade and across the Széchenyi Chain Bridge cuts through anything less than a proper insulated coat, scarf, and gloves. Thermal underlayers are not optional from November through March.

Skip packing toiletries, umbrellas, and over-the-counter medicines. DM drogerie markt and Rossmann have locations every few blocks in central Pest. A bottle of sunscreen runs 1,500-2,500 HUF ($5-8) at DM on Váci utca. Umbrellas cost 1,200-2,000 HUF. Ibuprofen is about 600 HUF for a 20-pack at any Gyógyszertár, often cheaper than in Western Europe. You do need to pack a Type C or Type F plug adapter. Hungary uses 230V at 50Hz. American hair dryers and straighteners rated for 110V only will burn out. Dual-voltage devices like phone and laptop chargers work with a simple plug adapter, no transformer needed. One adapter covers your whole stay since Hungarian outlets are uniform across hotels, Airbnbs, and hostels.