Everyone comes june-august when its 35c and packed. December-february averages 8-12c for daytime highs, minimal crowds, everythings open

Winter perks: no lines at colosseum/vatican, hotel prices drop 40%, restaurants arent stressed and rushed, locals are friendlier, you can walk for hours without melting

What to expect: some rain but not constant. Bring layers. Rome gets around 9 hours daylight in december so plan sightseeing 9am-5pm. Many outdoor cafe terraces have heaters

Christmas season is magical - markets, lights, cribs in churches. January is dead quiet and perfect for museums. February starts getting busy again with spring weather

Basically if you hate crowds and dont mind wearing a jacket rome in winter is perfect